llvm-6502/cmake/modules/HandleLLVMStdlib.cmake
Chandler Carruth 24a6fb0a17 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231560 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-07 10:30:34 +00:00

42 lines
1.3 KiB
CMake

# This CMake module is responsible for setting the standard library to libc++
# if the user has requested it.
if(NOT DEFINED LLVM_STDLIB_HANDLED)
set(LLVM_STDLIB_HANDLED ON)
if(CMAKE_COMPILER_IS_GNUCXX)
set(LLVM_COMPILER_IS_GCC_COMPATIBLE ON)
elseif( MSVC )
set(LLVM_COMPILER_IS_GCC_COMPATIBLE OFF)
elseif( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
set(LLVM_COMPILER_IS_GCC_COMPATIBLE ON)
endif()
function(append value)
foreach(variable ${ARGN})
set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
endforeach(variable)
endfunction()
include(CheckCXXCompilerFlag)
if(LLVM_ENABLE_LIBCXX)
if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
check_cxx_compiler_flag("-stdlib=libc++" CXX_SUPPORTS_STDLIB)
if(CXX_SUPPORTS_STDLIB)
append("-stdlib=libc++"
CMAKE_CXX_FLAGS CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS
CMAKE_MODULE_LINKER_FLAGS)
if(LLVM_ENABLE_LIBCXXABI)
append("-lc++abi"
CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS
CMAKE_MODULE_LINKER_FLAGS)
endif()
else()
message(WARNING "Can't specify libc++ with '-stdlib='")
endif()
else()
message(WARNING "Not sure how to specify libc++ for this compiler")
endif()
endif()
endif()