[Driver] Add DEFAULT_DYLD_PREFIX and DEFAULT_RPATH to complement DEFAULT_SYSROOT

[hubert.reinterpretcast]

Summary

Some target toolchains use more than just a default --sysroot, but also include a default --dyld-prefix and an implicitly-added -rpath.

For example, using a vanilla build of Clang with the IBM Advance Toolchain for Linux on Power would require specifying --sysroot=/opt/at12.0 --dyld-prefix=/opt/at12.0 -rpath /opt/at12.0/lib64. The GCC compiler provided with the Advance Toolchain is preconfigured such that adding such options is not necessary. This patch adds the configuration hooks that would allow Clang to be preconfigured similarly.

Various tests not compatible with builds that set a non-empty DEFAULT_DYLD_PREFIX (because they are sensitive to the dynamic linker path) are updated with --dyld-prefix="" in a manner analogous to what was done in D66834 with --sysroot="" in relation to DEFAULT_SYSROOT.

Note: The DEFAULT_RPATH behaviour has only been implemented for "GNU" toolchains.

[nemanjai]

Thank you for sorting this out. I think it is quite useful to be able to configure the compiler to use complete non-standard toolchains that include a dynamic linker.
Could you please ensure that the commit message describes that the --dyld-prefix option is added to test cases since they check for the dynamic linker and would fail on builds that specify a default prefix?
Also, you might want to add someone from some of the other targets/platforms as a reviewer to ensure there is no objections (perhaps @craig.topper, @tstellar, @brad or @joerg).

LGTM but maybe give others a few days to have a look.

clang/lib/Driver/ToolChains/Gnu.cpp

452

Is this just an orthogonal NFC change? If so, can you please commit it separately in an NFC commit?

[hubert.reinterpretcast]

clang/lib/Driver/ToolChains/Gnu.cpp

452

Yes; all of the other changes made around here disappeared during the development process. Would it be okay to split it out on the commit instead of updating the patch?

[joerg]

I do agree with the feature request, but I'm not sure about the implementation. It doesn't seem to work well with the cross-compiling support in the driver as clearly shown by the amount of tests that need patching. Is cross-compiling a concern for you at all? Otherwise I would suggest going a slightly different route and use default values iff no "-target" or "target-command" mechanism is active. Might need a way to temporarily disable unused flag warnings, but that way would be pretty much toolchain independent?

[hubert.reinterpretcast]

In D80300#2049181, @joerg wrote:

It doesn't seem to work well with the cross-compiling support in the driver as clearly shown by the amount of tests that need patching.

I don't see the test changes as reflecting that at all. If a user was able to use --dyld-prefix with the value being set as the default, then it just works. That would depend on the user's environment, which is something that the packager/builder of Clang might know something about or have control over.

I would suggest going a slightly different route and use default values iff no "-target" or "target-command" mechanism is active.

I'm not sure I see enough of a difference between the newly added customization points and DEFAULT_SYSROOT. The latter does not act conditionally in the manner proposed above.

Might need a way to temporarily disable unused flag warnings, but that way would be pretty much toolchain independent?

Can you elaborate on this? I'm not sure I caught the line of reasoning that led to this comment.

[joerg]

I see that more as a short-coming in the existing DEFAULT_SYSROOT behavior and less an argument for making more cases like it. So the general idea is that for turnkey toolchains,
we want to allow customizing the "default" target of the toolchain to hard-code options like --sysroot, --target, -Wl,-rpath etc. Those are all related, so when using a different target, they no longer make sense. One way to deal with all those options in a consistent manner is hook into the logic for determining the current target, if none is explicitly specified on the command line or implicit from the executable name, then prepend some additional flags on the command line based on some cmake variable or so. This flags shouldn't trigger the unused argument warnings, so you can always pass -Wl,-rpath, --sysroot etc, independent of whether the compiler is in preprocessing / compile / assemble / link mode. That seems to be a more general and systematic approach than adding many additional build-time options.

[hubert.reinterpretcast]

In D80300#2049679, @joerg wrote:

So the general idea is that for turnkey toolchains,
we want to allow customizing the "default" target of the toolchain to hard-code options like --sysroot, --target, -Wl,-rpath etc. Those are all related, so when using a different target, they no longer make sense.

I don't think there is anything precluding the packager from setting up the availability of a "turnkey" multi-target toolchain (with fat binaries if necessary) that would still make sense to pass --target to.

One way to deal with all those options in a consistent manner is hook into the logic for determining the current target, if none is explicitly specified on the command line or implicit from the executable name, then prepend some additional flags on the command line based on some cmake variable or so. This flags shouldn't trigger the unused argument warnings, so you can always pass -Wl,-rpath, --sysroot etc, independent of whether the compiler is in preprocessing / compile / assemble / link mode. That seems to be a more general and systematic approach than adding many additional build-time options.

This might make sense if we believe that the ability to add arbitrary "implied default target options" is not harmful. I am not certain people would agree on that point. The solutions do have overlap in terms of the problems they could be applied to, but I think each of them address some use cases that the other does not.

[hubert.reinterpretcast]

@joerg, are you okay with this patch landing?

[hubert.reinterpretcast]

clang/lib/Driver/ToolChains/Gnu.cpp

452

The NFC change has be separately committed under rGc15d5d12c625.

[hubert.reinterpretcast]

I believe I have responded to @joerg's comments with rationale to support the current direction. I intend to commit this patch within a week or two.

[joerg]

I don't agree with the justification at all, but it also seems that noone else cares about the build option creep here.

[nemanjai]

According to https://clang.llvm.org/docs/CrossCompilation.html (under Toolchain Options option 2) it is quite likely that a user that desires to cross-compile will have the necessary toolchain installed into a directory that will not require the use of --sysroot.

So I think that letting --target override the default --sysroot/--dyld-prefix/--rpath is reasonable. What I am suggesting is that if --target is specified on the command line, it clears any default setting of these three options (i.e. clears them unless they were explicitly specified on the command line).

Namely, something along the lines of:

diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 5c726b2..9a85394 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1073,8 +1073,13 @@ Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) {
     T.setObjectFormat(llvm::Triple::COFF);
     TargetTriple = T.str();
   }
-  if (const Arg *A = Args.getLastArg(options::OPT_target))
+  if (const Arg *A = Args.getLastArg(options::OPT_target)) {
     TargetTriple = A->getValue();
+    if (!Args.getLastArg(options::OPT__sysroot_EQ))
+      SysRoot = "";
+    if (!Args.getLastArg(options::OPT__dyld_prefix_EQ))
+      DyldPrefix = "";
+  }

And something similar for DEFAULT_RPATH.

Would something like this be satisfactory for everyone here? Or do others think this is the "worst of both worlds"? :)

clang/CMakeLists.txt

 
 set(CLANG_RESOURCE_DIR "" CACHE STRING
   "Relative directory from the Clang binary to its resource files.")
 
 set(C_INCLUDE_DIRS "" CACHE STRING
   "Colon separated list of directories clang will search for headers.")
 
 set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
+set(DEFAULT_DYLD_PREFIX "" CACHE STRING
+  "Default <path> to all compiler invocations for --dyld-prefix=<path>." )
+set(DEFAULT_RPATH "" CACHE STRING
+  "Default <path> to all compiler invocations appended as -rpath <path>." )
 set(DEFAULT_SYSROOT "" CACHE STRING
   "Default <path> to all compiler invocations for --sysroot=<path>." )
 
 set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld")
 
 set(ENABLE_X86_RELAX_RELOCATIONS OFF CACHE BOOL
     "enable x86 relax relocations by default")
 

clang/include/clang/Config/config.h.cmake

 
 /* Directories clang will search for headers */
 #define C_INCLUDE_DIRS "${C_INCLUDE_DIRS}"
 
 /* Directories clang will search for configuration files */
 #cmakedefine CLANG_CONFIG_FILE_SYSTEM_DIR "${CLANG_CONFIG_FILE_SYSTEM_DIR}"
 #cmakedefine CLANG_CONFIG_FILE_USER_DIR "${CLANG_CONFIG_FILE_USER_DIR}"
 
+/* Default <path> to all compiler invocations for --dyld-prefix=<path>. */
+#define DEFAULT_DYLD_PREFIX "${DEFAULT_DYLD_PREFIX}"
+
+/* Default <path> to all compiler invocations appended as -rpath <path>. */
+#define DEFAULT_RPATH "${DEFAULT_RPATH}"
+
 /* Default <path> to all compiler invocations for --sysroot=<path>. */
 #define DEFAULT_SYSROOT "${DEFAULT_SYSROOT}"
 
 /* Directory where gcc is installed. */
 #define GCC_INSTALL_PREFIX "${GCC_INSTALL_PREFIX}"
 
 /* Define if we have libxml2 */
 #cmakedefine CLANG_HAVE_LIBXML ${CLANG_HAVE_LIBXML}

clang/lib/Driver/Driver.cpp

 }
 
 Driver::Driver(StringRef ClangExecutable, StringRef TargetTriple,
                DiagnosticsEngine &Diags,
                IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS)
     : Diags(Diags), VFS(std::move(VFS)), Mode(GCCMode),
       SaveTemps(SaveTempsNone), BitcodeEmbed(EmbedNone), LTOMode(LTOK_None),
       ClangExecutable(ClangExecutable), SysRoot(DEFAULT_SYSROOT),
-      DriverTitle("clang LLVM compiler"), CCPrintOptionsFilename(nullptr),
-      CCPrintHeadersFilename(nullptr), CCLogDiagnosticsFilename(nullptr),
-      CCCPrintBindings(false), CCPrintOptions(false), CCPrintHeaders(false),
-      CCLogDiagnostics(false), CCGenDiagnostics(false),
-      TargetTriple(TargetTriple), CCCGenericGCCName(""), Saver(Alloc),
-      CheckInputsExist(true), GenReproducer(false),
-      SuppressMissingInputWarning(false) {
+      DyldPrefix(DEFAULT_DYLD_PREFIX), DriverTitle("clang LLVM compiler"),
+      CCPrintOptionsFilename(nullptr), CCPrintHeadersFilename(nullptr),
+      CCLogDiagnosticsFilename(nullptr), CCCPrintBindings(false),
+      CCPrintOptions(false), CCPrintHeaders(false), CCLogDiagnostics(false),
+      CCGenDiagnostics(false), TargetTriple(TargetTriple),
+      CCCGenericGCCName(""), Saver(Alloc), CheckInputsExist(true),
+      GenReproducer(false), SuppressMissingInputWarning(false) {
   // Provide a sane fallback if no VFS is specified.
   if (!this->VFS)
     this->VFS = llvm::vfs::getRealFileSystem();
 
   Name = std::string(llvm::sys::path::filename(ClangExecutable));
   Dir = std::string(llvm::sys::path::parent_path(ClangExecutable));
   InstalledDir = Dir; // Provide a sensible default installed dir.
 

clang/lib/Driver/ToolChains/Gnu.cpp

if (IsStatic) {
     CmdArgs.push_back("-shared");
   }
 
   if (!IsStatic) {
     if (Args.hasArg(options::OPT_rdynamic))
       CmdArgs.push_back("-export-dynamic");
 
     if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) {
-      const std::string Loader =
-          D.DyldPrefix + ToolChain.getDynamicLinker(Args);
       CmdArgs.push_back("-dynamic-linker");
-      CmdArgs.push_back(Args.MakeArgString(Loader));
+      CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) +
+                                           ToolChain.getDynamicLinker(Args)));
     }
   }
 
   CmdArgs.push_back("-o");
   CmdArgs.push_back(Output.getFilename());
 
   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
     if (!isAndroid && !IsIAMCU) {
if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
     CmdArgs.push_back("--no-demangle");
 
   bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
   bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
   // The profile runtime also needs access to system libraries.
   getToolChain().addProfileRTLibs(Args, CmdArgs);
 
+  if (!IsStatic && !IsStaticPIE && !StringRef(DEFAULT_RPATH).empty() &&
+      !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
+    CmdArgs.push_back("-rpath");
+    CmdArgs.push_back(DEFAULT_RPATH);
+  }
+
   if (D.CCCIsCXX() &&
       !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
     if (ToolChain.ShouldLinkCXXStdlib(Args)) {
       bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
                                  !Args.hasArg(options::OPT_static);
       if (OnlyLibstdcxxStatic)
         CmdArgs.push_back("-Bstatic");
       ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);

clang/test/Driver/fuchsia.c

 // RUN: %clang %s -### -no-canonical-prefixes --target=x86_64-fuchsia \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
-// RUN:     --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN:     --sysroot=%S/platform --dyld-prefix="" -fuse-ld=lld 2>&1 \
 // RUN:     | FileCheck -check-prefixes=CHECK,CHECK-X86_64 %s
 // RUN: %clang %s -### -no-canonical-prefixes --target=aarch64-fuchsia \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
-// RUN:     --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN:     --sysroot=%S/platform --dyld-prefix="" -fuse-ld=lld 2>&1 \
 // RUN:     | FileCheck -check-prefixes=CHECK,CHECK-AARCH64 %s
 // RUN: %clang %s -### -no-canonical-prefixes --target=riscv64-fuchsia \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
-// RUN:     --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN:     --sysroot=%S/platform --dyld-prefix="" -fuse-ld=lld 2>&1 \
 // RUN:     | FileCheck -check-prefixes=CHECK,CHECK-RISCV64 %s
 // CHECK: {{.*}}clang{{.*}}" "-cc1"
 // CHECK-X86_64: "-triple" "x86_64-unknown-fuchsia"
 // CHECK-AARCH64: "-triple" "aarch64-unknown-fuchsia"
 // CHECK-RISCV64: "-triple" "riscv64-unknown-fuchsia"
 // CHECK: "--mrelax-relocations"
 // CHECK: "-munwind-tables"
 // CHECK: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"

 // CHECK-SAFESTACK: "-fsanitize=safe-stack"
 // CHECK-SAFESTACK-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}libclang_rt.safestack.a"
 // CHECK-SAFESTACK-NOT: "__safestack_init"
 
 // RUN: %clang %s -### --target=x86_64-fuchsia \
 // RUN:     -fsanitize=address 2>&1 \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
 // RUN:     -fuse-ld=lld \
+// RUN:     --dyld-prefix="" \
 // RUN:     | FileCheck %s -check-prefix=CHECK-ASAN-X86
 // CHECK-ASAN-X86: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-ASAN-X86: "-fsanitize=address"
 // CHECK-ASAN-X86: "-fsanitize-address-globals-dead-stripping"
 // CHECK-ASAN-X86: "-dynamic-linker" "asan/ld.so.1"
 // CHECK-ASAN-X86: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}libclang_rt.asan.so"
 // CHECK-ASAN-X86: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}libclang_rt.asan-preinit.a"
 
 // RUN: %clang %s -### --target=aarch64-fuchsia \
 // RUN:     -fsanitize=address 2>&1 \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
 // RUN:     -fuse-ld=lld \
+// RUN:     --dyld-prefix="" \
 // RUN:     | FileCheck %s -check-prefix=CHECK-ASAN-AARCH64
 // CHECK-ASAN-AARCH64: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-ASAN-AARCH64: "-fsanitize=address,shadow-call-stack"
 // CHECK-ASAN-AARCH64: "-fsanitize-address-globals-dead-stripping"
 // CHECK-ASAN-AARCH64: "-dynamic-linker" "asan/ld.so.1"
 // CHECK-ASAN-AARCH64: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aarch64-fuchsia{{/|\\\\}}libclang_rt.asan.so"
 // CHECK-ASAN-AARCH64: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aarch64-fuchsia{{/|\\\\}}libclang_rt.asan-preinit.a"
 

clang/test/Driver/fuchsia.cpp

 // RUN: %clangxx %s -### -no-canonical-prefixes --target=x86_64-fuchsia \
 // RUN:     -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
-// RUN:     --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN:     --sysroot=%S/platform --dyld-prefix="" -fuse-ld=lld 2>&1 \
 // RUN:     | FileCheck -check-prefixes=CHECK,CHECK-X86_64 %s
 // RUN: %clangxx %s -### -no-canonical-prefixes --target=aarch64-fuchsia \
 // RUN:     -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
-// RUN:     --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN:     --sysroot=%S/platform --dyld-prefix="" -fuse-ld=lld 2>&1 \
 // RUN:     | FileCheck -check-prefixes=CHECK,CHECK-AARCH64 %s
 // RUN: %clangxx %s -### -no-canonical-prefixes --target=riscv64-fuchsia \
 // RUN:     -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
-// RUN:     --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN:     --sysroot=%S/platform --dyld-prefix="" -fuse-ld=lld 2>&1 \
 // RUN:     | FileCheck -check-prefixes=CHECK,CHECK-RISCV64 %s
 // CHECK: {{.*}}clang{{.*}}" "-cc1"
 // CHECK-X86_64: "-triple" "x86_64-unknown-fuchsia"
 // CHECK-AARCH64: "-triple" "aarch64-unknown-fuchsia"
 // CHECK-RISCV64: "-triple" "riscv64-unknown-fuchsia"
 // CHECK-NOT: "-fno-use-init-array"
 // CHECK: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK: "-isysroot" "[[SYSROOT:[^"]+]]"

clang/test/Driver/hurd.c

 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:     --target=i386-pc-gnu \
 // RUN:     --sysroot=%S/Inputs/basic_hurd_tree \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK %s
 // CHECK-NOT: warning:
 // CHECK: "-cc1"
 // CHECK: "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
 // CHECK: "-internal-externc-isystem" "[[SYSROOT]]/usr/include/i386-gnu"
 // CHECK: "-internal-externc-isystem" "[[SYSROOT]]/include"
 // CHECK: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"

clang/test/Driver/linux-ld.c

 // CHECK-UBUNTU-12-04-ARM-HF: "{{.*}}/usr/lib/gcc/arm-linux-gnueabihf/4.6.3{{/|\\\\}}crtend.o"
 // CHECK-UBUNTU-12-04-ARM-HF: "{{.*}}/usr/lib/gcc/arm-linux-gnueabihf/4.6.3/../../../arm-linux-gnueabihf{{/|\\\\}}crtn.o"
 //
 // Check Ubuntu 13.10 on x86-64 targeting arm-linux-gnueabihf.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-gnueabihf -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/x86-64_ubuntu_13.10 \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-X86-64-UBUNTU-13-10-ARM-HF %s
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "-dynamic-linker" "{{(/usr/arm--linux-gnueabihf)?}}/lib/ld-linux-armhf.so.3"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/lib/../lib{{/|\\\\}}crt1.o"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/lib/../lib{{/|\\\\}}crti.o"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8{{/|\\\\}}crtbegin.o"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "-L[[SYSROOT]]/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "-L[[SYSROOT]]/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/lib/../lib"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "-L[[SYSROOT]]/lib/../lib"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "-L[[SYSROOT]]/usr/lib/../lib"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "-L[[SYSROOT]]/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/lib"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8{{/|\\\\}}crtend.o"
 // CHECK-X86-64-UBUNTU-13-10-ARM-HF: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/lib/../lib{{/|\\\\}}crtn.o"
 //
 // Check Ubuntu 13.10 on x86-64 targeting arm-linux-gnueabi.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-gnueabi -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/x86-64_ubuntu_13.10 \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-X86-64-UBUNTU-13-10-ARM %s
 // CHECK-X86-64-UBUNTU-13-10-ARM: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-X86-64-UBUNTU-13-10-ARM: "-dynamic-linker" "{{(/usr/arm--linux-gnueabi)?}}/lib/ld-linux.so.3"
 // CHECK-X86-64-UBUNTU-13-10-ARM: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/lib/../lib{{/|\\\\}}crt1.o"
 // CHECK-X86-64-UBUNTU-13-10-ARM: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/lib/../lib{{/|\\\\}}crti.o"
 // CHECK-X86-64-UBUNTU-13-10-ARM: "{{.*}}/usr/lib/gcc-cross/arm-linux-gnueabi/4.7{{/|\\\\}}crtbegin.o"
 // CHECK-X86-64-UBUNTU-13-10-ARM: "-L[[SYSROOT]]/usr/lib/gcc-cross/arm-linux-gnueabi/4.7"
 // CHECK-X86-64-UBUNTU-13-10-ARM: "-L[[SYSROOT]]/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/lib/../lib"

 // RUN:     --target=armv7-linux-android21 \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-NOEXECSTACK %s
 // CHECK-ANDROID-NOEXECSTACK: "{{.*}}ld{{(.exe)?}}"
 // CHECK-ANDROID-NOEXECSTACK: "-z" "noexecstack"
 // CHECK-ANDROID-NOEXECSTACK-NOT: "-z" "execstack"
 // CHECK-ANDROID-NOEXECSTACK-NOT: "-z,execstack"
 // CHECK-ANDROID-NOEXECSTACK-NOT: "-zexecstack"
 
 +// RUN: %clang %s -### -o %t.o 2>&1 \
 +// RUN:     --target=armv7-linux-android21 \
 +// RUN:   | FileCheck --check-prefix=CHECK-ANDROID-WARN-SHARED-TEXTREL %s
 +// CHECK-ANDROID-WARN-SHARED-TEXTREL: "{{.*}}ld{{(.exe)?}}"
 +// CHECK-ANDROID-WARN-SHARED-TEXTREL: "--warn-shared-textrel"
 
 // RUN: %clang %s -### -o %t.o 2>&1 --target=mips64-linux-gnuabin32 \
 // RUN:   | FileCheck --check-prefix=CHECK-MIPS64EL-GNUABIN32 %s
 // CHECK-MIPS64EL-GNUABIN32: "{{.*}}ld{{(.exe)?}}"
 // CHECK-MIPS64EL-GNUABIN32: "-m" "elf32btsmipn32"
 // CHECK-MIPS64EL-GNUABIN32: "-dynamic-linker" "{{.*}}/lib{{(32)?}}/ld.so.1"
 // CHECK-MIPS64EL-GNUABIN32-NOT: "--hash-style={{gnu|both}}"
 //
 // RUN: %clang %s -### -o %t.o 2>&1 --target=mips64-linux-gnuabi64 \
 // RUN:   | FileCheck --check-prefix=CHECK-MIPS64EL-GNUABI64 %s
 // CHECK-MIPS64EL-GNUABI64: "{{.*}}ld{{(.exe)?}}"
 // CHECK-MIPS64EL-GNUABI64: "-m" "elf64btsmip"
 // CHECK-MIPS64EL-GNUABI64: "-dynamic-linker" "{{.*}}/lib{{(64)?}}/ld.so.1"
 // CHECK-MIPS64EL-GNUABI64-NOT: "--hash-style={{gnu|both}}"
 //
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=sparc-unknown-linux-gnu \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-SPARCV8 %s
 // CHECK-SPARCV8: "{{.*}}ld{{(.exe)?}}"
 // CHECK-SPARCV8: "-m" "elf32_sparc"
 // CHECK-SPARCV8: "-dynamic-linker" "{{(/usr/sparc-unknown-linux-gnu)?}}/lib/ld-linux.so.2"
 //
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=sparcel-unknown-linux-gnu \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-SPARCV8EL %s
 // CHECK-SPARCV8EL: "{{.*}}ld{{(.exe)?}}"
 // CHECK-SPARCV8EL: "-m" "elf32_sparc"
 // CHECK-SPARCV8EL: "-dynamic-linker" "{{(/usr/sparcel-unknown-linux-gnu)?}}/lib/ld-linux.so.2"
 //
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=sparcv9-unknown-linux-gnu \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-SPARCV9 %s
 // CHECK-SPARCV9: "{{.*}}ld{{(.exe)?}}"
 // CHECK-SPARCV9: "-m" "elf64_sparc"
 // CHECK-SPARCV9: "-dynamic-linker" "{{(/usr/sparcv9-unknown-linux-gnu)?}}/lib{{(64)?}}/ld-linux.so.2"
 //
 // Thoroughly exercise the Debian multiarch environment.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-X86 %s
 // CHECK-DEBIAN-X86: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-X86: "{{.*}}/usr/lib/gcc/i686-linux-gnu/4.5{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-X86: "-L[[SYSROOT]]/usr/lib/gcc/i686-linux-gnu/4.5"
 // CHECK-DEBIAN-X86: "-L[[SYSROOT]]/usr/lib/gcc/i686-linux-gnu/4.5/../../../i386-linux-gnu"
 // CHECK-DEBIAN-X86: "-L[[SYSROOT]]/usr/lib/i386-linux-gnu"
 // CHECK-DEBIAN-X86: "-L[[SYSROOT]]/usr/lib/gcc/i686-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-X86: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-X86: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-X86-64 %s
 // CHECK-DEBIAN-X86-64: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-X86-64: "{{.*}}/usr/lib/gcc/x86_64-linux-gnu/4.5{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-X86-64: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-linux-gnu/4.5"
 // CHECK-DEBIAN-X86-64: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-linux-gnu/4.5/../../../x86_64-linux-gnu"
 // CHECK-DEBIAN-X86-64: "-L[[SYSROOT]]/usr/lib/x86_64-linux-gnu"
 // CHECK-DEBIAN-X86-64: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-X86-64: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-X86-64: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=powerpc-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-PPC %s
 // CHECK-DEBIAN-PPC: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-PPC: "{{.*}}/usr/lib/gcc/powerpc-linux-gnu/4.5{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-PPC: "-L[[SYSROOT]]/usr/lib/gcc/powerpc-linux-gnu/4.5"
 // CHECK-DEBIAN-PPC: "-L[[SYSROOT]]/usr/lib/gcc/powerpc-linux-gnu/4.5/../../../powerpc-linux-gnu"
 // CHECK-DEBIAN-PPC: "-L[[SYSROOT]]/usr/lib/powerpc-linux-gnu"
 // CHECK-DEBIAN-PPC: "-L[[SYSROOT]]/usr/lib/gcc/powerpc-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-PPC: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-PPC: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=powerpc64le-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-PPC64LE %s
 // CHECK-DEBIAN-PPC64LE: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-PPC64LE: "{{.*}}/usr/lib/gcc/powerpc64le-linux-gnu/4.5{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-PPC64LE: "-L[[SYSROOT]]/usr/lib/gcc/powerpc64le-linux-gnu/4.5"
 // CHECK-DEBIAN-PPC64LE: "-L[[SYSROOT]]/usr/lib/gcc/powerpc64le-linux-gnu/4.5/../../../powerpc64le-linux-gnu"
 // CHECK-DEBIAN-PPC64LE: "-L[[SYSROOT]]/usr/lib/powerpc64le-linux-gnu"
 // CHECK-DEBIAN-PPC64LE: "-L[[SYSROOT]]/usr/lib/gcc/powerpc64le-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-PPC64LE: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-PPC64LE: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=powerpc64-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-PPC64 %s
 // CHECK-DEBIAN-PPC64: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-PPC64: "{{.*}}/usr/lib/gcc/powerpc64-linux-gnu/4.5{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-PPC64: "-L[[SYSROOT]]/usr/lib/gcc/powerpc64-linux-gnu/4.5"
 // CHECK-DEBIAN-PPC64: "-L[[SYSROOT]]/usr/lib/gcc/powerpc64-linux-gnu/4.5/../../../powerpc64-linux-gnu"
 // CHECK-DEBIAN-PPC64: "-L[[SYSROOT]]/usr/lib/powerpc64-linux-gnu"
 // CHECK-DEBIAN-PPC64: "-L[[SYSROOT]]/usr/lib/gcc/powerpc64-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-PPC64: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-PPC64: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-MIPS %s
 // CHECK-DEBIAN-MIPS: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-MIPS: "{{.*}}/usr/lib/gcc/mips-linux-gnu/4.5{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-MIPS: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5"
 // CHECK-DEBIAN-MIPS: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5/../../../mips-linux-gnu"
 // CHECK-DEBIAN-MIPS: "-L[[SYSROOT]]/usr/lib/mips-linux-gnu"
 // CHECK-DEBIAN-MIPS: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-MIPS: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-MIPS: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-MIPSEL %s
 // CHECK-DEBIAN-MIPSEL: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-MIPSEL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.5{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-MIPSEL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5"
 // CHECK-DEBIAN-MIPSEL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5/../../../mipsel-linux-gnu"
 // CHECK-DEBIAN-MIPSEL: "-L[[SYSROOT]]/usr/lib/mipsel-linux-gnu"
 // CHECK-DEBIAN-MIPSEL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-MIPSEL: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-MIPSEL: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-MIPS64 %s
 // CHECK-DEBIAN-MIPS64: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-MIPS64: "{{.*}}/usr/lib/gcc/mips-linux-gnu/4.5/64{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-MIPS64: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5/64"
 // CHECK-DEBIAN-MIPS64: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5"
 // CHECK-DEBIAN-MIPS64: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-MIPS64: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-MIPS64: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-MIPS64EL %s
 // CHECK-DEBIAN-MIPS64EL: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-MIPS64EL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.5/64{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-MIPS64EL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5/64"
 // CHECK-DEBIAN-MIPS64EL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5"
 // CHECK-DEBIAN-MIPS64EL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-MIPS64EL: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-MIPS64EL: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64-linux-gnu -rtlib=platform -mabi=n32 \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-MIPS64-N32 %s
 // CHECK-DEBIAN-MIPS64-N32: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-MIPS64-N32: "{{.*}}/usr/lib/gcc/mips-linux-gnu/4.5/n32{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-MIPS64-N32: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5/n32"
 // CHECK-DEBIAN-MIPS64-N32: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5"
 // CHECK-DEBIAN-MIPS64-N32: "-L[[SYSROOT]]/usr/lib/gcc/mips-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-MIPS64-N32: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-MIPS64-N32: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-gnu -rtlib=platform -mabi=n32 \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_multiarch_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-MIPS64EL-N32 %s
 // CHECK-DEBIAN-MIPS64EL-N32: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-MIPS64EL-N32: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.5/n32{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5/n32"
 // CHECK-DEBIAN-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5"
 // CHECK-DEBIAN-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.5/../../.."
 // CHECK-DEBIAN-MIPS64EL-N32: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib"
 //
 // Check linker paths on Debian 8 / Sparc
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=sparc-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_8_sparc_multilib_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-SPARC32 %s
 // CHECK-DEBIAN-SPARC32: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-SPARC32: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../sparc-linux-gnu{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-SPARC32: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../sparc-linux-gnu{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-SPARC32: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-SPARC32: "-L[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9"
 // CHECK-DEBIAN-SPARC32: "-L[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../sparc-linux-gnu"
 // CHECK-DEBIAN-SPARC32: "-L[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../../lib"
 // CHECK-DEBIAN-SPARC32: "-L[[SYSROOT]]/lib/sparc-linux-gnu"
 // CHECK-DEBIAN-SPARC32: "-L[[SYSROOT]]/usr/lib/sparc-linux-gnu"
 // CHECK-DEBIAN-SPARC32: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-SPARC32: "-L[[SYSROOT]]/usr/lib"
 // CHECK-DEBIAN-SPARC32: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9{{/|\\\\}}crtend.o"
 // CHECK-DEBIAN-SPARC32: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../sparc-linux-gnu{{/|\\\\}}crtn.o"
 //
 // Check linker paths on Debian 8 / Sparc, with the oldstyle multilib packages
 // RUN: %clang -no-canonical-prefixes -m64 %s -### -o %t.o 2>&1 \
 // RUN:     --target=sparc-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_8_sparc_multilib_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-SPARC32-LIB64 %s
 // CHECK-DEBIAN-SPARC32-LIB64: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-SPARC32-LIB64: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../../lib64{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-SPARC32-LIB64: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../../lib64{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-SPARC32-LIB64: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/64{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-SPARC32-LIB64: "-L[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/64"
 // CHECK-DEBIAN-SPARC32-LIB64: "-L[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../../lib64"
 // CHECK-DEBIAN-SPARC32-LIB64: "-L[[SYSROOT]]/lib/../lib64"
 // CHECK-DEBIAN-SPARC32-LIB64: "-L[[SYSROOT]]/usr/lib/../lib64"
 // CHECK-DEBIAN-SPARC32-LIB64: "-L[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9"
 // CHECK-DEBIAN-SPARC32-LIB64: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-SPARC32-LIB64: "-L[[SYSROOT]]/usr/lib"
 // CHECK-DEBIAN-SPARC32-LIB64: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/64{{/|\\\\}}crtend.o"
 // CHECK-DEBIAN-SPARC32-LIB64: "[[SYSROOT]]/usr/lib/gcc/sparc-linux-gnu/4.9/../../../../lib64{{/|\\\\}}crtn.o"
 //
 // Check linker paths on Debian 8 / Sparc64
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=sparc64-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_8_sparc64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-SPARC64 %s
 // CHECK-DEBIAN-SPARC64: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-SPARC64: "[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9/../../../sparc64-linux-gnu{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-SPARC64: "[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9/../../../sparc64-linux-gnu{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-SPARC64: "[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9"
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9/../../../sparc64-linux-gnu"
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/lib/sparc64-linux-gnu"
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/lib/../lib64"
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/usr/lib/sparc64-linux-gnu"
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9/../../.."
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-SPARC64: "-L[[SYSROOT]]/usr/lib"
 // CHECK-DEBIAN-SPARC64: "[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9{{/|\\\\}}crtend.o"
 // CHECK-DEBIAN-SPARC64: "[[SYSROOT]]/usr/lib/gcc/sparc64-linux-gnu/4.9/../../../sparc64-linux-gnu{{/|\\\\}}crtn.o"
 //
 // Test linker invocation on Android.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-androideabi -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID %s
 // CHECK-ANDROID: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-ANDROID: "-z" "now"
 // CHECK-ANDROID: "-z" "relro"
 // CHECK-ANDROID: "--enable-new-dtags"
 // CHECK-ANDROID: "{{.*}}{{/|\\\\}}crtbegin_dynamic.o"
 // CHECK-ANDROID: "-L[[SYSROOT]]/usr/lib"
 // CHECK-ANDROID-NOT: "gcc_s"
 // CHECK-ANDROID: "-lgcc"
 // CHECK-ANDROID: "-ldl"
 // CHECK-ANDROID-NOT: "gcc_s"
 // CHECK-ANDROID: "{{.*}}{{/|\\\\}}crtend_android.o"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-androideabi -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm64-linux-android -rtlib=platform \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-SO %s
 // CHECK-ANDROID-SO: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-ANDROID-SO-NOT: "-Bsymbolic"
 // CHECK-ANDROID-SO: "{{.*}}{{/|\\\\}}crtbegin_so.o"
 // CHECK-ANDROID-SO: "-L[[SYSROOT]]/usr/lib"
 // CHECK-ANDROID-SO-NOT: "gcc_s"
 // CHECK-ANDROID-SO: "-lgcc"
 // CHECK-ANDROID-SO: "-ldl"
 // CHECK-ANDROID-SO-NOT: "gcc_s"
 // CHECK-ANDROID-SO: "{{.*}}{{/|\\\\}}crtend_so.o"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-androideabi -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-android -rtlib=platform \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm64-linux-android -rtlib=platform \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -static \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-STATIC %s
 // CHECK-ANDROID-STATIC: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-ANDROID-STATIC: "{{.*}}{{/|\\\\}}crtbegin_static.o"
 // CHECK-ANDROID-STATIC: "-L[[SYSROOT]]/usr/lib"
 // CHECK-ANDROID-STATIC-NOT: "gcc_s"
 // CHECK-ANDROID-STATIC: "-lgcc"
 // CHECK-ANDROID-STATIC-NOT: "-ldl"
 // CHECK-ANDROID-STATIC-NOT: "gcc_s"
 // CHECK-ANDROID-STATIC: "{{.*}}{{/|\\\\}}crtend_android.o"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-androideabi -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot  \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot  \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot  \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-android -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -pie \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PIE %s
 // CHECK-ANDROID-PIE: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-ANDROID-PIE: "{{.*}}{{/|\\\\}}crtbegin_dynamic.o"
 // CHECK-ANDROID-PIE: "-L[[SYSROOT]]/usr/lib"
 // CHECK-ANDROID-PIE-NOT: "gcc_s"
 // CHECK-ANDROID-PIE: "-lgcc"
 // CHECK-ANDROID-PIE-NOT: "gcc_s"
 // CHECK-ANDROID-PIE: "{{.*}}{{/|\\\\}}crtend_android.o"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-androideabi \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-32 %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-android \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-32 %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-android \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-32 %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-linux-android \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-64 %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm64-linux-android \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-64 %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-android \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-64 %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-android \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-32 %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-android \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-64 %s
 // CHECK-ANDROID-32: "-dynamic-linker" "/system/bin/linker"
 // CHECK-ANDROID-64: "-dynamic-linker" "/system/bin/linker64"
 //
 // Test that -pthread does not add -lpthread on Android.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-androideabi -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm64-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-android -pthread \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-androideabi -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm64-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-linux-android -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // CHECK-ANDROID-PTHREAD-NOT: -lpthread
 //
 // RUN: %clang -no-canonical-prefixes %t.o -### -o %t 2>&1 \
 // RUN:     --target=arm-linux-androideabi -pthread \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD-LINK %s
 // CHECK-ANDROID-PTHREAD-LINK-NOT: argument unused during compilation: '-pthread'
 //
 // Check linker invocation on Debian 6 MIPS 32/64-bit.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_6_mips_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-ML-MIPSEL %s
 // CHECK-DEBIAN-ML-MIPSEL: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-ML-MIPSEL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-ML-MIPSEL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-ML-MIPSEL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-ML-MIPSEL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4"
 // CHECK-DEBIAN-ML-MIPSEL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib"
 // CHECK-DEBIAN-ML-MIPSEL: "-L[[SYSROOT]]/lib/../lib"
 // CHECK-DEBIAN-ML-MIPSEL: "-L[[SYSROOT]]/usr/lib/../lib"
 // CHECK-DEBIAN-ML-MIPSEL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/../../.."
 // CHECK-DEBIAN-ML-MIPSEL: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-ML-MIPSEL: "-L[[SYSROOT]]/usr/lib"
 //
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_6_mips_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-ML-MIPS64EL %s
 // CHECK-DEBIAN-ML-MIPS64EL: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-ML-MIPS64EL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib64{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-ML-MIPS64EL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib64{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-ML-MIPS64EL: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/64{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-ML-MIPS64EL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/64"
 // CHECK-DEBIAN-ML-MIPS64EL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib64"
 // CHECK-DEBIAN-ML-MIPS64EL: "-L[[SYSROOT]]/lib/../lib64"
 // CHECK-DEBIAN-ML-MIPS64EL: "-L[[SYSROOT]]/usr/lib/../lib64"
 // CHECK-DEBIAN-ML-MIPS64EL: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/../../.."
 // CHECK-DEBIAN-ML-MIPS64EL: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-ML-MIPS64EL: "-L[[SYSROOT]]/usr/lib"
 //
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-gnu -rtlib=platform -mabi=n32 \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_6_mips_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-ML-MIPS64EL-N32 %s
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib32{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib32{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "{{.*}}/usr/lib/gcc/mipsel-linux-gnu/4.4/n32{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/n32"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/../../../../lib32"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "-L[[SYSROOT]]/lib/../lib32"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib/../lib32"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib/gcc/mipsel-linux-gnu/4.4/../../.."
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-ML-MIPS64EL-N32: "-L[[SYSROOT]]/usr/lib"
 //
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64-unknown-linux-gnu --rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_6_mips64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-ML-MIPS64-GNUABI %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64-linux-gnuabi64 -rtlib=platform -mabi=n64 \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_6_mips64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-ML-MIPS64-GNUABI %s
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "{{.*}}/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../../mips64-linux-gnuabi64{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "{{.*}}/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../../mips64-linux-gnuabi64{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "{{.*}}/usr/lib/gcc/mips64-linux-gnuabi64/4.9{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64-linux-gnuabi64/4.9"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../../mips64-linux-gnuabi64"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/lib/mips64-linux-gnuabi64"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/usr/lib/mips64-linux-gnuabi64"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64-linux-gnuabi64/4.9"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../.."
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "-L[[SYSROOT]]/usr/lib"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "{{.*}}/usr/lib/gcc/mips64-linux-gnuabi64/4.9{{/|\\\\}}crtend.o"
 // CHECK-DEBIAN-ML-MIPS64-GNUABI: "{{.*}}/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../../mips64-linux-gnuabi64{{/|\\\\}}crtn.o"
 //
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-unknown-linux-gnu -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_6_mips64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-ML-MIPS64EL-GNUABI %s
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-linux-gnuabi64 -rtlib=platform -mabi=n64 \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/debian_6_mips64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-DEBIAN-ML-MIPS64EL-GNUABI %s
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "{{.*}}/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../../mips64el-linux-gnuabi64{{/|\\\\}}crt1.o"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "{{.*}}/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../../mips64el-linux-gnuabi64{{/|\\\\}}crti.o"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "{{.*}}/usr/lib/gcc/mips64el-linux-gnuabi64/4.9{{/|\\\\}}crtbegin.o"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64el-linux-gnuabi64/4.9"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../../mips64el-linux-gnuabi64"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/lib/mips64el-linux-gnuabi64"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/usr/lib/mips64el-linux-gnuabi64"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64el-linux-gnuabi64/4.9"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../.."
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/lib"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "-L[[SYSROOT]]/usr/lib"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "{{.*}}/usr/lib/gcc/mips64el-linux-gnuabi64/4.9{{/|\\\\}}crtend.o"
 // CHECK-DEBIAN-ML-MIPS64EL-GNUABI: "{{.*}}/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../../mips64el-linux-gnuabi64{{/|\\\\}}crtn.o"
 //
 // Test linker invocation for Freescale SDK (OpenEmbedded).
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=powerpc-fsl-linux -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/freescale_ppc_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-FSL-PPC %s
 // CHECK-FSL-PPC: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-FSL-PPC: "-m" "elf32ppclinux"
 // CHECK-FSL-PPC: "{{.*}}{{/|\\\\}}crt1.o"
 // CHECK-FSL-PPC: "{{.*}}{{/|\\\\}}crtbegin.o"
 // CHECK-FSL-PPC: "-L[[SYSROOT]]/usr/lib"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=powerpc64-fsl-linux -rtlib=platform \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/freescale_ppc64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-FSL-PPC64 %s
 // CHECK-FSL-PPC64: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-FSL-PPC64: "-m" "elf64ppc"
 // CHECK-FSL-PPC64: "{{.*}}{{/|\\\\}}crt1.o"
 // CHECK-FSL-PPC64: "{{.*}}{{/|\\\\}}crtbegin.o"
 // CHECK-FSL-PPC64: "-L[[SYSROOT]]/usr/lib64/powerpc64-fsl-linux/4.6.2/../.."
 //
 // Check that crtfastmath.o is linked with -ffast-math and with -Ofast.
 // RUN: %clang --target=x86_64-unknown-linux -### %s \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NOCRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -ffast-math \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -funsafe-math-optimizations\
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -Ofast\
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -Ofast -O3\
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NOCRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -O3 -Ofast\
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -ffast-math -fno-fast-math \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NOCRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -Ofast -fno-fast-math \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -Ofast -fno-unsafe-math-optimizations \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -fno-fast-math -Ofast  \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // RUN: %clang --target=x86_64-unknown-linux -### %s -fno-unsafe-math-optimizations -Ofast \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CRTFASTMATH %s
 // We don't have crtfastmath.o in the i386 tree, use it to check that file
 // detection works.
 // RUN: %clang --target=i386-unknown-linux -### %s -ffast-math \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NOCRTFASTMATH %s
 // CHECK-CRTFASTMATH: usr/lib/gcc/x86_64-unknown-linux/4.6.0{{/|\\\\}}crtfastmath.o
 // CHECK-NOCRTFASTMATH-NOT: crtfastmath.o
 
 // Check that we link in gcrt1.o when compiling with -pg
 // RUN: %clang -pg --target=x86_64-unknown-linux -### %s \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>& 1 \
 // RUN:   | FileCheck --check-prefix=CHECK-PG %s
 // CHECK-PG: gcrt1.o
 
 // GCC forwards -u to the linker.
 // RUN: %clang -u asdf --target=x86_64-unknown-linux -### %s \
 // RUN:        --gcc-toolchain="" \
 // RUN:        --sysroot=%S/Inputs/basic_linux_tree 2>& 1 \
 // RUN:   | FileCheck --check-prefix=CHECK-u %s
 // CHECK-u: "-u" "asdf"
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=armeb-unknown-linux \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-ARMEB %s
 // CHECK-ARMEB: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-ARMEB-NOT: "--be8"
 // CHECK-ARMEB: "-EB"
 // CHECK-ARMEB: "-m" "armelfb_linux_eabi"
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=armebv7-unknown-linux \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-ARMV7EB %s
 // CHECK-ARMV7EB: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-ARMV7EB: "--be8"
 // CHECK-ARMV7EB: "-EB"
 // CHECK-ARMV7EB: "-m" "armelfb_linux_eabi"
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=armv7-unknown-linux \
 // RUN:     -mbig-endian \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-ARMV7EB %s
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=armebv7-unknown-linux \
 // RUN:     -mbig-endian \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-ARMV7EB %s
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=armv7-unknown-linux \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-ARMV7EL %s
 // CHECK-ARMV7EL: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-ARMV7EL-NOT: "--be8"
 // CHECK-ARMV7EL: "-EL"
 // CHECK-ARMV7EL: "-m" "armelf_linux_eabi"
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=armebv7-unknown-linux \
 // RUN:     -mlittle-endian \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-ARMV7EL %s
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=armv7-unknown-linux \
 // RUN:     -mlittle-endian \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-ARMV7EL %s
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64_be-unknown-linux \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-AARCH64BE %s
 // CHECK-AARCH64BE: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-AARCH64BE-NOT: "--be8"
 // CHECK-AARCH64BE: "-EB"
 // CHECK-AARCH64BE: "-m" "aarch64linuxb"
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-unknown-linux \
 // RUN:     -mbig-endian \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-AARCH64BE %s
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64_be-unknown-linux \
 // RUN:     -mbig-endian \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-AARCH64BE %s
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-unknown-linux \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-AARCH64LE %s
 // CHECK-AARCH64LE: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-AARCH64LE-NOT: "--be8"
 // CHECK-AARCH64LE: "-EL"
 // CHECK-AARCH64LE: "-m" "aarch64linux"
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64_be-unknown-linux \
 // RUN:     -mlittle-endian \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-AARCH64LE %s
 
 // Check dynamic-linker for musl-libc
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=i386-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-X86 %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-X86_64 %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-MIPS %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-MIPSEL %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-MIPS64 %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips64el-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-MIPS64EL %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=powerpc-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-PPC %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=powerpc64-pc-linux-musl \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-PPC64 %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=thumb-pc-linux-musleabi \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARM %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=thumb-pc-linux-musleabihf \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=thumbv7-pc-linux-musleabi -mhard-float \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=thumbeb-pc-linux-musleabi \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMEB %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=thumbeb-pc-linux-musleabihf \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMEBHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=thumbv7eb-pc-linux-musleabi -mhard-float \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMEBHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-pc-linux-musleabi \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARM %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-pc-linux-musleabihf \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=armv7-pc-linux-musleabi -mhard-float \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=armeb-pc-linux-musleabi \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMEB %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=armeb-pc-linux-musleabihf \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMEBHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=armv7eb-pc-linux-musleabi -mhard-float \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-ARMEBHF %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-pc-linux-musleabi \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-AARCH64 %s
 // RUN: %clang %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64_be-pc-linux-musleabi \
+// RUN:     --dyld-prefix="" \
 // RUN:   | FileCheck --check-prefix=CHECK-MUSL-AARCH64_BE %s
 // CHECK-MUSL-X86:        "-dynamic-linker" "/lib/ld-musl-i386.so.1"
 // CHECK-MUSL-X86_64:     "-dynamic-linker" "/lib/ld-musl-x86_64.so.1"
 // CHECK-MUSL-MIPS:       "-dynamic-linker" "/lib/ld-musl-mips.so.1"
 // CHECK-MUSL-MIPSEL:     "-dynamic-linker" "/lib/ld-musl-mipsel.so.1"
 // CHECK-MUSL-MIPS64:     "-dynamic-linker" "/lib/ld-musl-mips64.so.1"
 // CHECK-MUSL-MIPS64EL:   "-dynamic-linker" "/lib/ld-musl-mips64el.so.1"
 // CHECK-MUSL-PPC:        "-dynamic-linker" "/lib/ld-musl-powerpc.so.1"
 // CHECK-MUSL-PPC64:      "-dynamic-linker" "/lib/ld-musl-powerpc64.so.1"
 // CHECK-MUSL-ARM:        "-dynamic-linker" "/lib/ld-musl-arm.so.1"
 // CHECK-MUSL-ARMHF:      "-dynamic-linker" "/lib/ld-musl-armhf.so.1"
 // CHECK-MUSL-ARMEB:      "-dynamic-linker" "/lib/ld-musl-armeb.so.1"
 // CHECK-MUSL-ARMEBHF:    "-dynamic-linker" "/lib/ld-musl-armebhf.so.1"
 // CHECK-MUSL-AARCH64:    "-dynamic-linker" "/lib/ld-musl-aarch64.so.1"
 // CHECK-MUSL-AARCH64_BE: "-dynamic-linker" "/lib/ld-musl-aarch64_be.so.1"
 
 // Check whether multilib gcc install works fine on Gentoo with gcc-config
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-unknown-linux-gnu -rtlib=platform \
 // RUN:     --sysroot=%S/Inputs/gentoo_linux_gcc_multi_version_tree \
 // RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-LD-GENTOO %s
 // CHECK-LD-GENTOO-NOT: warning:
 // CHECK-LD-GENTOO: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-LD-GENTOO: "--eh-frame-hdr"
 // CHECK-LD-GENTOO: "-m" "elf_x86_64"
 // CHECK-LD-GENTOO: "-dynamic-linker"
 // CHECK-LD-GENTOO: "{{.*}}/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3{{/|\\\\}}crtbegin.o"
 // CHECK-LD-GENTOO: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3"
 // CHECK-LD-GENTOO: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/lib"
 // CHECK-LD-GENTOO: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../.."
 // CHECK-LD-GENTOO: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // CHECK-LD-GENTOO: "-lc"
 // CHECK-LD-GENTOO: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=i686-unknown-linux-gnu -rtlib=platform \
 // RUN:     --sysroot=%S/Inputs/gentoo_linux_gcc_multi_version_tree \
 // RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-LD-GENTOO-32 %s
 // CHECK-LD-GENTOO-32-NOT: warning:
 // CHECK-LD-GENTOO-32: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-LD-GENTOO-32: "--eh-frame-hdr"
 // CHECK-LD-GENTOO-32: "-m" "elf_i386"
 // CHECK-LD-GENTOO-32: "-dynamic-linker"
 // CHECK-LD-GENTOO-32: "{{.*}}/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/32{{/|\\\\}}crtbegin.o"
 // CHECK-LD-GENTOO-32: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/32"
 // CHECK-LD-GENTOO-32: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/lib"
 // CHECK-LD-GENTOO-32: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../.."
 // CHECK-LD-GENTOO-32: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // CHECK-LD-GENTOO-32: "-lc"
 // CHECK-LD-GENTOO-32: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-unknown-linux-gnux32 -rtlib=platform \
 // RUN:     --sysroot=%S/Inputs/gentoo_linux_gcc_multi_version_tree \
 // RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-LD-GENTOO-X32 %s
 // CHECK-LD-GENTOO-X32-NOT: warning:
 // CHECK-LD-GENTOO-X32: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-LD-GENTOO-X32: "--eh-frame-hdr"
 // CHECK-LD-GENTOO-X32: "-m" "elf32_x86_64"
 // CHECK-LD-GENTOO-X32: "-dynamic-linker"
 // CHECK-LD-GENTOO-X32: "{{.*}}/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/x32{{/|\\\\}}crtbegin.o"
 // CHECK-LD-GENTOO-X32: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/x32"
 // CHECK-LD-GENTOO-X32: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/lib"
 // CHECK-LD-GENTOO-X32: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../.."
 // CHECK-LD-GENTOO-X32: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // CHECK-LD-GENTOO-X32: "-lc"
 // CHECK-LD-GENTOO-X32: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-unknown-linux-gnu \
 // RUN:     --gcc-toolchain="%S/Inputs/rhel_7_tree/opt/rh/devtoolset-7/root/usr" \
 // RUN:     --sysroot=%S/Inputs/rhel_7_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-LD-RHEL7-DTS %s
 // CHECK-LD-RHEL7-DTS: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-LD-RHLE7-DTS: Selected GCC installation: [[GCC_INSTALL:[[SYSROOT]]/lib/gcc/x86_64-redhat-linux/7]]
 // CHECK-LD-RHEL7-DTS-NOT: /usr/bin/ld
 // CHECK-LD-RHLE7-DTS: [[GCC_INSTALL]/../../../bin/ld
 
 // Check whether gcc7 install works fine on Amazon Linux AMI
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=x86_64-amazon-linux -rtlib=libgcc \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/ami_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-LD-AMI %s
 // CHECK-LD-AMI-NOT: warning:
 // CHECK-LD-AMI: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-LD-AMI: "--eh-frame-hdr"
 // CHECK-LD-AMI: "-m" "elf_x86_64"
 // CHECK-LD-AMI: "-dynamic-linker"
 // CHECK-LD-AMI: "{{.*}}/usr/lib/gcc/x86_64-amazon-linux/7{{/|\\\\}}crtbegin.o"
 // CHECK-LD-AMI: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-amazon-linux/7"
 // CHECK-LD-AMI: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-amazon-linux/7/../../../../lib64"
 // CHECK-LD-AMI: "-L[[SYSROOT]]/usr/lib/gcc/x86_64-amazon-linux/7/../../.."
 // CHECK-LD-AMI: "-L[[SYSROOT]]/lib"
 // CHECK-LD-AMI: "-L[[SYSROOT]]/usr/lib"
 // CHECK-LD-AMI: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // CHECK-LD-AMI: "-lc"
 // CHECK-LD-AMI: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 
 // Check whether the OpenEmbedded ARM libs are added correctly.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=arm-oe-linux-gnueabi -rtlib=libgcc \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/openembedded_arm_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-OE-ARM %s
 
 // CHECK-OE-ARM: "-cc1" "-triple" "armv4t-oe-linux-gnueabi"
 // CHECK-OE-ARM: ld{{.*}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-OE-ARM: "-m" "armelf_linux_eabi" "-dynamic-linker"
 // CHECK-OE-ARM: "[[SYSROOT]]/usr/lib/arm-oe-linux-gnueabi/6.3.0/../../../lib{{/|\\\\}}crt1.o"
 // CHECK-OE-ARM: "[[SYSROOT]]/usr/lib/arm-oe-linux-gnueabi/6.3.0/../../../lib{{/|\\\\}}crti.o"
 // CHECK-OE-ARM: "[[SYSROOT]]/usr/lib/arm-oe-linux-gnueabi/6.3.0{{/|\\\\}}crtbegin.o"
 // CHECK-OE-ARM: "-L[[SYSROOT]]/usr/lib/arm-oe-linux-gnueabi/6.3.0"
 // CHECK-OE-ARM: "-L[[SYSROOT]]/usr/lib/arm-oe-linux-gnueabi"
 // CHECK-OE-ARM: "-L[[SYSROOT]]/usr/lib"
 // CHECK-OE-ARM: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lc" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // CHECK-OE-ARM: "[[SYSROOT]]/usr/lib/arm-oe-linux-gnueabi/6.3.0{{/|\\\\}}crtend.o"
 // CHECK-OE-ARM: "[[SYSROOT]]/usr/lib/arm-oe-linux-gnueabi/6.3.0/../../../lib{{/|\\\\}}crtn.o"
 
 // Check whether the OpenEmbedded AArch64 libs are added correctly.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=aarch64-oe-linux -rtlib=libgcc \
 // RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/openembedded_aarch64_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-OE-AARCH64 %s
 
 // CHECK-OE-AARCH64: "-cc1" "-triple" "aarch64-oe-linux"
 // CHECK-OE-AARCH64: ld{{.*}}" "--sysroot=[[SYSROOT:[^"]+]]"
 // CHECK-OE-AARCH64: "-m" "aarch64linux" "-dynamic-linker"
 // CHECK-OE-AARCH64: "[[SYSROOT]]/usr/lib64/aarch64-oe-linux/6.3.0/../../../lib64{{/|\\\\}}crt1.o"
 // CHECK-OE-AARCH64: "[[SYSROOT]]/usr/lib64/aarch64-oe-linux/6.3.0/../../../lib64{{/|\\\\}}crti.o"
 // CHECK-OE-AARCH64: "[[SYSROOT]]/usr/lib64/aarch64-oe-linux/6.3.0{{/|\\\\}}crtbegin.o"
 // CHECK-OE-AARCH64: "-L[[SYSROOT]]/usr/lib64/aarch64-oe-linux/6.3.0"
 // CHECK-OE-AARCH64: "-L[[SYSROOT]]/usr/lib64"
 // CHECK-OE-AARCH64: "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lc" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed"
 // CHECK-OE-AARCH64: "[[SYSROOT]]/usr/lib64/aarch64-oe-linux/6.3.0{{/|\\\\}}crtend.o"
 // CHECK-OE-AARCH64: "[[SYSROOT]]/usr/lib64/aarch64-oe-linux/6.3.0/../../../lib64{{/|\\\\}}crtn.o"

clang/test/Driver/mips-mti.cpp

 // Check frontend and linker invocations on the MTI MIPS toolchain.
 
 // -EB -mhard-float -mabi=32
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EB -mhard-float -mabi=32 \
 // RUN:   | FileCheck --check-prefix=EB-HARD-O32 %s
 // EB-HARD-O32: "-internal-isystem"
 // EB-HARD-O32: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EB-HARD-O32: "-internal-isystem"
 // EB-HARD-O32: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mips-r2-hard/lib"
 // EB-HARD-O32: "-internal-isystem"

 // EB-HARD-O32: "[[TC]]/mips-r2-hard/lib{{/|\\\\}}crtend.o"
 // EB-HARD-O32: "[[TC]]/../../../../sysroot/mips-r2-hard/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EB -mhard-float -mabi=n32
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EB -mhard-float -mabi=n32 \
 // RUN:   | FileCheck --check-prefix=EB-HARD-N32 %s
 // EB-HARD-N32: "-internal-isystem"
 // EB-HARD-N32: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EB-HARD-N32: "-internal-isystem"
 // EB-HARD-N32: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mips-r2-hard/lib32"
 // EB-HARD-N32: "-internal-isystem"

 // EB-HARD-N32: "[[TC]]/mips-r2-hard/lib32{{/|\\\\}}crtend.o"
 // EB-HARD-N32: "[[TC]]/../../../../sysroot/mips-r2-hard/usr/lib/../lib32{{/|\\\\}}crtn.o"
 
 // -EB -mhard-float -mabi=64
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips64-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EB -mhard-float -mabi=64 \
 // RUN:   | FileCheck --check-prefix=EB-HARD-N64 %s
 // EB-HARD-N64: "-internal-isystem"
 // EB-HARD-N64: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EB-HARD-N64: "-internal-isystem"
 // EB-HARD-N64: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mips-r2-hard/lib64"
 // EB-HARD-N64: "-internal-isystem"

 // EB-HARD-N64: "[[TC]]/mips-r2-hard/lib64{{/|\\\\}}crtend.o"
 // EB-HARD-N64: "[[TC]]/../../../../sysroot/mips-r2-hard/usr/lib/../lib64{{/|\\\\}}crtn.o"
 
 // -EL -mhard-float -mabi=32
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -mhard-float -mabi=32 \
 // RUN:   | FileCheck --check-prefix=EL-HARD-O32 %s
 // EL-HARD-O32: "-internal-isystem"
 // EL-HARD-O32: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-HARD-O32: "-internal-isystem"
 // EL-HARD-O32: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mipsel-r2-hard/lib"
 // EL-HARD-O32: "-internal-isystem"

 // EL-HARD-O32: "[[TC]]/mipsel-r2-hard/lib{{/|\\\\}}crtend.o"
 // EL-HARD-O32: "[[TC]]/../../../../sysroot/mipsel-r2-hard/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EL -mhard-float -mabi=n32
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -mhard-float -mabi=n32 \
 // RUN:   | FileCheck --check-prefix=EL-HARD-N32 %s
 // EL-HARD-N32: "-internal-isystem"
 // EL-HARD-N32: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-HARD-N32: "-internal-isystem"
 // EL-HARD-N32: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mipsel-r2-hard/lib32"
 // EL-HARD-N32: "-internal-isystem"

 // EL-HARD-N32: "[[TC]]/mipsel-r2-hard/lib32{{/|\\\\}}crtend.o"
 // EL-HARD-N32: "[[TC]]/../../../../sysroot/mipsel-r2-hard/usr/lib/../lib32{{/|\\\\}}crtn.o"
 
 // -EL -mhard-float -mabi=64
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips64-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -mhard-float -mabi=64 \
 // RUN:   | FileCheck --check-prefix=EL-HARD-N64 %s
 // EL-HARD-N64: "-internal-isystem"
 // EL-HARD-N64: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-HARD-N64: "-internal-isystem"
 // EL-HARD-N64: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mipsel-r2-hard/lib64"
 // EL-HARD-N64: "-internal-isystem"

 // EL-HARD-N64: "[[TC]]/mipsel-r2-hard/lib64{{/|\\\\}}crtend.o"
 // EL-HARD-N64: "[[TC]]/../../../../sysroot/mipsel-r2-hard/usr/lib/../lib64{{/|\\\\}}crtn.o"
 
 // -EB -msoft-float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EB -msoft-float \
 // RUN:   | FileCheck --check-prefix=EB-SOFT %s
 // EB-SOFT: "-internal-isystem"
 // EB-SOFT: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EB-SOFT: "-internal-isystem"
 // EB-SOFT: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mips-r2-soft/lib"
 // EB-SOFT: "-internal-isystem"

 // EB-SOFT: "[[TC]]/mips-r2-soft/lib{{/|\\\\}}crtend.o"
 // EB-SOFT: "[[TC]]/../../../../sysroot/mips-r2-soft/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EL -msoft-float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -msoft-float \
 // RUN:   | FileCheck --check-prefix=EL-SOFT %s
 // EL-SOFT: "-internal-isystem"
 // EL-SOFT: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-SOFT: "-internal-isystem"
 // EL-SOFT: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mipsel-r2-soft/lib"
 // EL-SOFT: "-internal-isystem"

 // EL-SOFT: "[[TC]]/mipsel-r2-soft/lib{{/|\\\\}}crtend.o"
 // EL-SOFT: "[[TC]]/../../../../sysroot/mipsel-r2-soft/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EB -mhard-float -muclibc
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EB -mhard-float -muclibc \
 // RUN:   | FileCheck --check-prefix=EB-HARD-UCLIBC %s
 // EB-HARD-UCLIBC: "-internal-isystem"
 // EB-HARD-UCLIBC: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EB-HARD-UCLIBC: "-internal-isystem"
 // EB-HARD-UCLIBC: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mips-r2-hard-uclibc/lib"
 // EB-HARD-UCLIBC: "-internal-isystem"

 // EB-HARD-UCLIBC: "[[TC]]/mips-r2-hard-uclibc/lib{{/|\\\\}}crtend.o"
 // EB-HARD-UCLIBC: "[[TC]]/../../../../sysroot/mips-r2-hard-uclibc/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EL -mhard-float -muclibc
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -mhard-float -muclibc \
 // RUN:   | FileCheck --check-prefix=EL-HARD-UCLIBC %s
 // EL-HARD-UCLIBC: "-internal-isystem"
 // EL-HARD-UCLIBC: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-HARD-UCLIBC: "-internal-isystem"
 // EL-HARD-UCLIBC: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mipsel-r2-hard-uclibc/lib"
 // EL-HARD-UCLIBC: "-internal-isystem"

 // EL-HARD-UCLIBC: "[[TC]]/mipsel-r2-hard-uclibc/lib{{/|\\\\}}crtend.o"
 // EL-HARD-UCLIBC: "[[TC]]/../../../../sysroot/mipsel-r2-hard-uclibc/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EB -mhard-float -mnan=2008
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EB -mhard-float -mnan=2008 \
 // RUN:   | FileCheck --check-prefix=EB-HARD-NAN2008 %s
 // EB-HARD-NAN2008: "-internal-isystem"
 // EB-HARD-NAN2008: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EB-HARD-NAN2008: "-internal-isystem"
 // EB-HARD-NAN2008: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mips-r2-hard-nan2008/lib"
 // EB-HARD-NAN2008: "-internal-isystem"

 // EB-HARD-NAN2008: "[[TC]]/mips-r2-hard-nan2008/lib{{/|\\\\}}crtend.o"
 // EB-HARD-NAN2008: "[[TC]]/../../../../sysroot/mips-r2-hard-nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EL -mhard-float -mnan=2008
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -mhard-float -mnan=2008 \
 // RUN:   | FileCheck --check-prefix=EL-HARD-NAN2008 %s
 // EL-HARD-NAN2008: "-internal-isystem"
 // EL-HARD-NAN2008: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-HARD-NAN2008: "-internal-isystem"
 // EL-HARD-NAN2008: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mipsel-r2-hard-nan2008/lib"
 // EL-HARD-NAN2008: "-internal-isystem"

 // EL-HARD-NAN2008: "[[TC]]/mipsel-r2-hard-nan2008/lib{{/|\\\\}}crtend.o"
 // EL-HARD-NAN2008: "[[TC]]/../../../../sysroot/mipsel-r2-hard-nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EB -mhard-float -muclibc -mnan=2008
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EB -mhard-float -muclibc -mnan=2008 \
 // RUN:   | FileCheck --check-prefix=EB-HARD-UCLIBC-NAN2008 %s
 // EB-HARD-UCLIBC-NAN2008: "-internal-isystem"
 // EB-HARD-UCLIBC-NAN2008: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EB-HARD-UCLIBC-NAN2008: "-internal-isystem"
 // EB-HARD-UCLIBC-NAN2008: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mips-r2-hard-nan2008-uclibc/lib"
 // EB-HARD-UCLIBC-NAN2008: "-internal-isystem"

 // EB-HARD-UCLIBC-NAN2008: "[[TC]]/mips-r2-hard-nan2008-uclibc/lib{{/|\\\\}}crtend.o"
 // EB-HARD-UCLIBC-NAN2008: "[[TC]]/../../../../sysroot/mips-r2-hard-nan2008-uclibc/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EL -mhard-float -muclibc -mnan=2008
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -mhard-float -muclibc -mnan=2008 \
 // RUN:   | FileCheck --check-prefix=EL-HARD-UCLIBC-NAN2008 %s
 // EL-HARD-UCLIBC-NAN2008: "-internal-isystem"
 // EL-HARD-UCLIBC-NAN2008: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-HARD-UCLIBC-NAN2008: "-internal-isystem"
 // EL-HARD-UCLIBC-NAN2008: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/mipsel-r2-hard-nan2008-uclibc/lib"
 // EL-HARD-UCLIBC-NAN2008: "-internal-isystem"

 // EL-HARD-UCLIBC-NAN2008: "[[TC]]/mipsel-r2-hard-nan2008-uclibc/lib{{/|\\\\}}crtend.o"
 // EL-HARD-UCLIBC-NAN2008: "[[TC]]/../../../../sysroot/mipsel-r2-hard-nan2008-uclibc/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EL -msoft-float -mmicromips
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -msoft-float -mmicromips \
 // RUN:   | FileCheck --check-prefix=EL-SOFT-MICRO %s
 // EL-SOFT-MICRO: "-internal-isystem"
 // EL-SOFT-MICRO: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-SOFT-MICRO: "-internal-isystem"
 // EL-SOFT-MICRO: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/micromipsel-r2-soft/lib"
 // EL-SOFT-MICRO: "-internal-isystem"

 // EL-SOFT-MICRO: "[[TC]]/micromipsel-r2-soft/lib{{/|\\\\}}crtend.o"
 // EL-SOFT-MICRO: "[[TC]]/../../../../sysroot/micromipsel-r2-soft/usr/lib/../lib{{/|\\\\}}crtn.o"
 
 // -EL -mhard-float -mmicromips -mnan=2008
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:        --target=mips-mti-linux-gnu \
 // RUN:        --gcc-toolchain=%S/Inputs/mips_mti_tree \
 // RUN:        --sysroot="" \
+// RUN:        --dyld-prefix="" \
 // RUN:        -stdlib=libstdc++ \
 // RUN:        -EL -mhard-float -mmicromips -mnan=2008 \
 // RUN:   | FileCheck --check-prefix=EL-SOFT-MICRO-NAN2008 %s
 // EL-SOFT-MICRO-NAN2008: "-internal-isystem"
 // EL-SOFT-MICRO-NAN2008: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.2]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2"
 // EL-SOFT-MICRO-NAN2008: "-internal-isystem"
 // EL-SOFT-MICRO-NAN2008: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.2/mips-mti-linux-gnu/micromipsel-r2-hard-nan2008/lib"
 // EL-SOFT-MICRO-NAN2008: "-internal-isystem"