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[CMake] Properly detect whether we're building runtime for i386 or i686. 

llvm-svn: 230569
This commit is contained in:
Alexey Samsonov 2015-02-25 23:07:32 +00:00
parent dbdab4037e
commit 819045cdd6
1 changed files with 43 additions and 21 deletions
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64
compiler-rt/cmake/config-ix.cmake
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@ -1,3 +1,4 @@
include(CMakePushCheckState)
include(CheckCXXCompilerFlag)
include(CheckLibraryExists)
include(CheckSymbolExists)
@ -70,19 +71,39 @@ set(COMPILER_RT_SUPPORTED_ARCH)
set(SIMPLE_SOURCE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/simple.cc)
file(WRITE ${SIMPLE_SOURCE} "#include <stdlib.h>\n#include <limits>\nint main() {}\n")
# test_target_arch(<arch> <target flags...>)
# Sets the target flags for a given architecture and determines if this
# architecture is supported by trying to build a simple file.
macro(test_target_arch arch)
function(check_compile_definition def argstring out_var)
if("${def}" STREQUAL "")
set(${out_var} TRUE PARENT_SCOPE)
return()
endif()
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${argstring}")
check_symbol_exists(${def} "" ${out_var})
cmake_pop_check_state()
endfunction()
# test_target_arch(<arch> <def> <target flags...>)
# Checks if architecture is supported: runs host compiler with provided
# flags to verify that:
# 1) <def> is defined (if non-empty)
# 2) simple file can be successfully built.
# If successful, saves target flags for this architecture.
macro(test_target_arch arch def)
set(TARGET_${arch}_CFLAGS ${ARGN})
set(argstring "${CMAKE_EXE_LINKER_FLAGS}")
set(argstring "")
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE}
COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS}"
OUTPUT_VARIABLE TARGET_${arch}_OUTPUT
CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS:STRING=${argstring}")
check_compile_definition("${def}" "${argstring}" HAS_${arch}_DEF)
if(NOT HAS_${arch}_DEF)
set(CAN_TARGET_${arch} FALSE)
else()
set(argstring "${CMAKE_EXE_LINKER_FLAGS} ${argstring}")
try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE}
COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS}"
OUTPUT_VARIABLE TARGET_${arch}_OUTPUT
CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS:STRING=${argstring}")
endif()
if(${CAN_TARGET_${arch}})
list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "${arch}")
@ -139,33 +160,34 @@ if(ANDROID)
else()
if("${LLVM_NATIVE_ARCH}" STREQUAL "X86")
if(NOT MSVC)
test_target_arch(x86_64 "-m64")
test_target_arch(i386 "-m32")
test_target_arch(x86_64 "" "-m64")
test_target_arch(i386 __i386__ "-m32")
test_target_arch(i686 __i686__ "-m32")
else()
test_target_arch(i386 "")
test_target_arch(i386 "" "")
endif()
elseif("${LLVM_NATIVE_ARCH}" STREQUAL "PowerPC")
TEST_BIG_ENDIAN(HOST_IS_BIG_ENDIAN)
if(HOST_IS_BIG_ENDIAN)
test_target_arch(powerpc64 "-m64")
test_target_arch(powerpc64 "" "-m64")
else()
test_target_arch(powerpc64le "-m64")
test_target_arch(powerpc64le "" "-m64")
endif()
elseif("${LLVM_NATIVE_ARCH}" STREQUAL "Mips")
if("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "mipsel|mips64el")
# regex for mipsel, mips64el
test_target_arch(mipsel "-m32")
test_target_arch(mips64el "-m64")
test_target_arch(mipsel "" "-m32")
test_target_arch(mips64el "" "-m64")
else()
test_target_arch(mips "-m32")
test_target_arch(mips64 "-m64")
test_target_arch(mips "" "-m32")
test_target_arch(mips64 "" "-m64")
endif()
elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "arm")
test_target_arch(arm "-march=armv7-a")
test_target_arch(arm "" "-march=armv7-a")
elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "aarch32")
test_target_arch(aarch32 "-march=armv8-a")
test_target_arch(aarch32 "" "-march=armv8-a")
elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "aarch64")
test_target_arch(aarch64 "-march=armv8-a")
test_target_arch(aarch64 "" "-march=armv8-a")
endif()
set(COMPILER_RT_OS_SUFFIX "")
endif()