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llvm-project/llvm/cmake/modules/HandleLLVMStdlib.cmake

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[CMake] Move -stdlib=libc++ handling into its own file. r200744 moved this into cmake/config-ix.cmake, so that it would happen very early in the build process. However, standalone builds of Clang and other external projects never include this file (which is correct). Now, -stdlib=libc++ and the LLVM_COMPILER_IS_GCC_COMPATIBLE option are both set in a new include file, HandleLLVMStdlib, which is included by both config-ix.cmake and HandleLLVMOptions.cmake. This preserves existing behavior for projects relying on HandleLLVMOptions and still does the right thing for builds of LLVM itself. llvm-svn: 200811
2014-02-05 08:02:37 +08:00
# This CMake module is responsible for setting the standard library to libc++
# if the user has requested it.
[CMake] Move the setting of LLVM_COMPILER_IS_GCC_COMPATIBLE to a separate file Currently LLVM_COMPILER_IS_GCC_COMPATIBLE is set as a side-effect of determining the stdlib to use in HandleLLVMStdlib, which causes problems when attempting to use AddLLVM from an installed LLVM toolchain, as HandleLLVMStdlib is not used. Move the setting of this variable into DetermineGCCCompatible and include that from both AddLLVM and HandleLLVMStdlib. Differential Revision: http://reviews.llvm.org/D13216 llvm-svn: 248798
2015-09-29 22:33:58 +08:00
include(DetermineGCCCompatible)
[CMake] Move -stdlib=libc++ handling into its own file. r200744 moved this into cmake/config-ix.cmake, so that it would happen very early in the build process. However, standalone builds of Clang and other external projects never include this file (which is correct). Now, -stdlib=libc++ and the LLVM_COMPILER_IS_GCC_COMPATIBLE option are both set in a new include file, HandleLLVMStdlib, which is included by both config-ix.cmake and HandleLLVMOptions.cmake. This preserves existing behavior for projects relying on HandleLLVMOptions and still does the right thing for builds of LLVM itself. llvm-svn: 200811
2014-02-05 08:02:37 +08:00
if(NOT DEFINED LLVM_STDLIB_HANDLED)
set(LLVM_STDLIB_HANDLED ON)
Teach the LLVM CMake build how to explicitly use libc++abi when using libc++. This lets me almost self-host on Linux with libc++ and libc++abi very simply. Currently, MCJIT and OrcJIT are failing due to uncaught exceptions, and the Go binding tests are failing to build due to not linking in the correct C++ standard library. llvm-svn: 231560
2015-03-07 18:30:34 +08:00
function(append value)
foreach(variable ${ARGN})
set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
endforeach(variable)
[CMake] Move -stdlib=libc++ handling into its own file. r200744 moved this into cmake/config-ix.cmake, so that it would happen very early in the build process. However, standalone builds of Clang and other external projects never include this file (which is correct). Now, -stdlib=libc++ and the LLVM_COMPILER_IS_GCC_COMPATIBLE option are both set in a new include file, HandleLLVMStdlib, which is included by both config-ix.cmake and HandleLLVMOptions.cmake. This preserves existing behavior for projects relying on HandleLLVMOptions and still does the right thing for builds of LLVM itself. llvm-svn: 200811
2014-02-05 08:02:37 +08:00
endfunction()
include(CheckCXXCompilerFlag)
if(LLVM_ENABLE_LIBCXX)
if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
check_cxx_compiler_flag("-stdlib=libc++" CXX_SUPPORTS_STDLIB)
Teach the LLVM CMake build how to explicitly use libc++abi when using libc++. This lets me almost self-host on Linux with libc++ and libc++abi very simply. Currently, MCJIT and OrcJIT are failing due to uncaught exceptions, and the Go binding tests are failing to build due to not linking in the correct C++ standard library. llvm-svn: 231560
2015-03-07 18:30:34 +08:00
if(CXX_SUPPORTS_STDLIB)
append("-stdlib=libc++"
CMAKE_CXX_FLAGS CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS
CMAKE_MODULE_LINKER_FLAGS)
else()
message(WARNING "Can't specify libc++ with '-stdlib='")
endif()
[CMake] Move -stdlib=libc++ handling into its own file. r200744 moved this into cmake/config-ix.cmake, so that it would happen very early in the build process. However, standalone builds of Clang and other external projects never include this file (which is correct). Now, -stdlib=libc++ and the LLVM_COMPILER_IS_GCC_COMPATIBLE option are both set in a new include file, HandleLLVMStdlib, which is included by both config-ix.cmake and HandleLLVMOptions.cmake. This preserves existing behavior for projects relying on HandleLLVMOptions and still does the right thing for builds of LLVM itself. llvm-svn: 200811
2014-02-05 08:02:37 +08:00
else()
message(WARNING "Not sure how to specify libc++ for this compiler")
endif()
endif()
endif()