Add a ENABLE_X86_RELAX_RELOCATIONS cmake option.

espindola · espindola · commit 557679f42bbb · 2016-06-20T23:54:44.000Z
This corresponds to binutils' --enable-x86-relax-relocations.

llvm-svn: 273224
diff --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
@@ -185,6 +185,9 @@ set(DEFAULT_SYSROOT "" CACHE 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")
+
 set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING
   "Default C++ stdlib to use (empty for architecture default, \"libstdc++\" or \"libc++\"")
 if (NOT(CLANG_DEFAULT_CXX_STDLIB STREQUAL "" OR
diff --git a/clang/include/clang/Config/config.h.cmake b/clang/include/clang/Config/config.h.cmake
@@ -41,4 +41,7 @@
 /* pass --build-id to ld */
 #cmakedefine ENABLE_LINKER_BUILD_ID
 
+/* enable x86 relax relocations by default */
+#cmakedefine01 ENABLE_X86_RELAX_RELOCATIONS
+
 #endif
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
@@ -2839,7 +2839,7 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
   // options.
   bool CompressDebugSections = false;
 
-  bool UseRelaxRelocations = false;
+  bool UseRelaxRelocations = ENABLE_X86_RELAX_RELOCATIONS;
   const char *MipsTargetFeature = nullptr;
   for (const Arg *A :
        Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
