Build LLVM-C.dll by default on windows and enable in release package

[Wallbraker]

Summary

With the fixes to the building of LLVM-C.dll in D56781 this should now be safe to land. This will greatly simplify dealing with LLVM for people that just want to use the C API on windows. This is a follow up from D35077.

[hans]

Looks good to me. Do you have commit access, or would you like me to commit it for you?

utils/release/build_llvm_package.bat

55–65

Thanks, this is much easier to read. I hadn't seen the ^ trick before.

[Wallbraker]

No I don't have commit access, so please feel free to commit. Will this land before the branch point and also make it out in that release?

utils/release/build_llvm_package.bat

55–65

Credit goes to @bhelyer for teaching me that trick, I'm very much a Linux guy. :)

[hans]

I've committed in r351324. That's just after the branch point, but if no problems show up, I'll merge it to the release branch.

[hans]

I just tried to build a package, and it failed like this:

[5343/5480] Generating export list for LLVM-C
FAILED: libllvm-c.exports
cmd.exe /C "cd /D C:\src\llvm_package_351324\build32_stage0\tools\llvm-shlib && C:\python_27_amd64\files\python.exe C:/src/llvm_package_351324/llvm/tools/llvm-shlib/gen-msvc-exports.py C:/src/llvm_package_351324/build32_stage0/./lib/LLVMDemangle.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSupport.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMTableGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMCore.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMFuzzMutate.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMIRReader.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSelectionDAG.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMIRParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMGlobalISel.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBinaryFormat.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBitReader.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBitWriter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMTransformUtils.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMInstrumentation.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAggressiveInstCombine.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMInstCombine.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMScalarOpts.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMipo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMVectorize.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMObjCARCOpts.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMCoroutines.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLinker.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAnalysis.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLTO.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMC.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMCParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMCDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMCA.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMObject.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMObjectYAML.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMOption.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMOptRemarks.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMDebugInfoDWARF.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMDebugInfoMSF.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMDebugInfoCodeView.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMDebugInfoPDB.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSymbolize.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMExecutionEngine.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMInterpreter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMCJIT.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMOrcJIT.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMRuntimeDyld.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMTarget.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAArch64CodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAArch64AsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAArch64Disassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAArch64AsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAArch64Desc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAArch64Info.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAArch64Utils.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAMDGPUCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAMDGPUAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAMDGPUDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAMDGPUAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAMDGPUDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAMDGPUInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAMDGPUUtils.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMARMCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMARMAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMARMDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMARMAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMARMDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMARMInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMARMUtils.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBPFCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBPFAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBPFDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBPFAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBPFDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMBPFInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMHexagonCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMHexagonAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMHexagonDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMHexagonDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMHexagonInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLanaiCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLanaiAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLanaiDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLanaiAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLanaiDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLanaiInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMipsCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMipsAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMipsDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMipsAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMipsDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMipsInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMSP430CodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMSP430AsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMSP430Desc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMSP430Info.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMSP430AsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMMSP430Disassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMNVPTXCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMNVPTXAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMNVPTXDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMNVPTXInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMPowerPCCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMPowerPCAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMPowerPCDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMPowerPCAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMPowerPCDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMPowerPCInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSparcCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSparcAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSparcDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSparcAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSparcDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSparcInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSystemZCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSystemZAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSystemZDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSystemZAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSystemZDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMSystemZInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMWebAssemblyCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMWebAssemblyAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMWebAssemblyDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMWebAssemblyAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMWebAssemblyDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMWebAssemblyInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMX86CodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMX86AsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMX86Disassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMX86AsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMX86Desc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMX86Info.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMX86Utils.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMXCoreCodeGen.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMXCoreDisassembler.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMXCoreAsmPrinter.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMXCoreDesc.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMXCoreInfo.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMAsmParser.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLineEditor.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMProfileData.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMCoverage.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMPasses.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMTextAPI.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMDlltoolDriver.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMLibDriver.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMXRay.lib C:/src/llvm_package_351324/build32_stage0/./lib/LLVMWindowsManifest.lib C:/src/llvm_package_351324/build32_stage0/./lib/LTO.lib --nm C:/src/llvm_package_351324/build32_stage0/./bin/llvm-nm -o C:/src/llvm_package_351324/build32_stage0/./libllvm-c.exports"
The command line is too long.

Maybe it can be made to use a response file somehow?

I've reverted in r351329 for now.

[hans]

Here's an example from the buildbots: http://lab.llvm.org:8011/builders/lld-x86_64-win7/builds/31389/steps/build%20lld/logs/stdio

[Wallbraker]

@hans @serge-sans-paille I'm re-opening this again as the fixes have landed. Build tested the latest master with the change on.

[serge-sans-paille]

CMakeLists.txt

537

out of curiosity: does it make sense to have this turned ON by default, while it's OFF for darwin?

[Wallbraker]

CMakeLists.txt

537

Due to the way c-runtimes and different compiler works (or doesn't work) getting a usable DLL is more valuable on Windows then on Mac. It doesn't add much build time and makes sure that the building of the LLVM-C.dll is better tested.

[serge-sans-paille]

CMakeLists.txt

537

ok, LGTM then.

[hans]

lgtm, I'll try building a snapshot with this when it's landed.

[Wallbraker]

Thanks! As I don't have commit access I will need somebody to land this, thanks!

Cheers, Jakob.

[Forest]

I was hoping to use the LLVM-C bindings in Windows (hopefully without building LLVM from scratch). Is that possible with this DLL? Are there header files that ship for this DLL?

CMakeLists.txt

 # shared library by setting LLVM_DYLIB_COMPONENTS to a semi-colon delimited
 # list of LLVM components. All component names handled by llvm-config are valid.
 if(NOT DEFINED LLVM_DYLIB_COMPONENTS)
   set(LLVM_DYLIB_COMPONENTS "all" CACHE STRING
     "Semicolon-separated list of components to include in libLLVM, or \"all\".")
 endif()
 option(LLVM_LINK_LLVM_DYLIB "Link tools against the libllvm dynamic library" OFF)
 if(MSVC)
-  option(LLVM_BUILD_LLVM_C_DYLIB "Build LLVM-C.dll (Windows only)" OFF)
+  option(LLVM_BUILD_LLVM_C_DYLIB "Build LLVM-C.dll (Windows only)" ON)
 else()
   option(LLVM_BUILD_LLVM_C_DYLIB "Build libllvm-c re-export library (Darwin only)" OFF)
 endif()
 set(LLVM_BUILD_LLVM_DYLIB_default OFF)
 if(LLVM_LINK_LLVM_DYLIB OR (LLVM_BUILD_LLVM_C_DYLIB AND NOT MSVC))
   set(LLVM_BUILD_LLVM_DYLIB_default ON)
 endif()
 option(LLVM_BUILD_LLVM_DYLIB "Build libllvm dynamic library" ${LLVM_BUILD_LLVM_DYLIB_default})

utils/release/build_llvm_package.bat

 svn.exe export -r %revision% http://llvm.org/svn/llvm-project/clang-tools-extra/%branch% llvm/tools/clang/tools/extra || exit /b
 svn.exe export -r %revision% http://llvm.org/svn/llvm-project/lld/%branch% llvm/tools/lld || exit /b
 svn.exe export -r %revision% http://llvm.org/svn/llvm-project/compiler-rt/%branch% llvm/projects/compiler-rt || exit /b
 svn.exe export -r %revision% http://llvm.org/svn/llvm-project/openmp/%branch% llvm/projects/openmp || exit /b
 svn.exe export -r %revision% http://llvm.org/svn/llvm-project/lldb/%branch% llvm/tools/lldb || exit /b
 
 
 REM Setting CMAKE_CL_SHOWINCLUDES_PREFIX to work around PR27226.
-set cmake_flags=-DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_INSTALL_TOOLCHAIN_ONLY=ON -DCMAKE_INSTALL_UCRT_LIBRARIES=ON -DCLANG_FORMAT_VS_VERSION=%clang_format_vs_version% -DPACKAGE_VERSION=%package_version% -DLLDB_RELOCATABLE_PYTHON=1 -DLLDB_TEST_COMPILER=%cd%\build32_stage0\bin\clang.exe -DCMAKE_CL_SHOWINCLUDES_PREFIX="Note: including file: "
+set cmake_flags=^
+  -DCMAKE_BUILD_TYPE=Release ^
+  -DLLVM_ENABLE_ASSERTIONS=ON ^
+  -DLLVM_INSTALL_TOOLCHAIN_ONLY=ON ^
+  -DLLVM_BUILD_LLVM_C_DYLIB=ON ^
+  -DCMAKE_INSTALL_UCRT_LIBRARIES=ON ^
+  -DCLANG_FORMAT_VS_VERSION=%clang_format_vs_version% ^
+  -DPACKAGE_VERSION=%package_version% ^
+  -DLLDB_RELOCATABLE_PYTHON=1 ^
+  -DLLDB_TEST_COMPILER=%cd%\build32_stage0\bin\clang.exe ^
+  -DCMAKE_CL_SHOWINCLUDES_PREFIX="Note: including file: "
 
 REM TODO: Run the "check-all" tests.
 
 set "VSCMD_START_DIR=%CD%"
 call "%vsdevcmd%" -arch=x86
 set CC=
 set CXX=
 mkdir build32_stage0