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Move target OS and CPU detection code to a separate CMake module

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This commit is contained in:
Axel Isouard 2017-02-06 19:22:15 +01:00
parent 282570038c
commit b334e9098a
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GPG key ID: 4E64BB3EAAF31C29
2 changed files with 63 additions and 73 deletions
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74
CMakeLists.txt
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@ -11,79 +11,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
include(FindLibraries) include(FindLibraries)
include(Version) include(Version)
include(Options) include(Options)
include(TargetOsAndCpu)
#
# Target OS
set(TARGET_OS "" CACHE STRING "Target OS, used as --target_os argument")
set(TARGET_OS_LIST android chromeos ios linux nacl mac win)
if (TARGET_OS STREQUAL "")
if (CMAKE_SYSTEM_NAME MATCHES "Linux")
set(TARGET_OS "linux")
elseif (CMAKE_SYSTEM_NAME MATCHES "Darwin")
set(TARGET_OS "mac")
elseif (CMAKE_SYSTEM_NAME MATCHES "Windows")
set(TARGET_OS "win")
endif ()
endif (TARGET_OS STREQUAL "")
if (NOT ${TARGET_OS} IN_LIST TARGET_OS_LIST)
message(FATAL_ERROR "Unknown value '${TARGET_OS}' for variable TARGET_OS, options are: ${TARGET_OS_LIST}")
endif (NOT ${TARGET_OS} IN_LIST TARGET_OS_LIST)
#
# Target CPU
set(TARGET_CPU "" CACHE STRING "Target CPU, used as --target_cpu argument")
set(TARGET_CPU_LIST x86 x64 arm arm64 mipsel)
if (TARGET_CPU STREQUAL "")
include(CheckSymbolExists)
if (WIN32)
check_symbol_exists("_M_X64" "" ARCH_X64)
if (NOT ARCH_X64)
check_symbol_exists("_M_AMD64" "" ARCH_X64)
if (NOT ARCH_X64)
check_symbol_exists("_M_IX86" "" ARCH_X86)
if (NOT ARCH_X86)
check_symbol_exists("_M_ARM" "" ARCH_ARM)
check_symbol_exists("_M_ARM64" "" ARCH_ARM64)
endif (NOT ARCH_X86)
endif (NOT ARCH_X64)
endif (NOT ARCH_X64)
else (WIN32)
check_symbol_exists("__i386__" "" ARCH_X86)
check_symbol_exists("__x86_64__" "" ARCH_X64)
check_symbol_exists("__arm__" "" ARCH_ARM)
check_symbol_exists("__aarch64__" "" ARCH_ARM64)
endif (WIN32)
if (ARCH_X86)
set(TARGET_CPU "x86")
elseif (ARCH_X64)
set(TARGET_CPU "x64")
else ()
set(TARGET_CPU ${CMAKE_SYSTEM_PROCESSOR})
endif (ARCH_X86)
endif (TARGET_CPU STREQUAL "")
if (NOT ${TARGET_CPU} IN_LIST TARGET_CPU_LIST)
message(FATAL_ERROR "Unknown value '${TARGET_CPU}' for variable TARGET_CPU, options are: ${TARGET_CPU_LIST}")
endif (NOT ${TARGET_CPU} IN_LIST TARGET_CPU_LIST)
if (UNIX)
if (ARCH_X86)
set(LIBWEBRTC_REQUIRED_CXX_FLAGS "-m32")
endif (ARCH_X86)
set(LIBWEBRTC_REQUIRED_CXX_FLAGS "${LIBWEBRTC_REQUIRED_CXX_FLAGS} -std=gnu++0x")
list(APPEND LIBWEBRTC_DEFINITIONS WEBRTC_POSIX _GLIBCXX_USE_CXX11_ABI=0)
elseif (WIN32)
set(LIBWEBRTC_REQUIRED_C_FLAGS_DEBUG "/MTd")
set(LIBWEBRTC_REQUIRED_C_FLAGS_RELEASE "/MT")
set(LIBWEBRTC_REQUIRED_CXX_FLAGS_DEBUG "/MTd")
set(LIBWEBRTC_REQUIRED_CXX_FLAGS_RELEASE "/MT")
list(APPEND LIBWEBRTC_DEFINITIONS WEBRTC_WIN NOMINMAX _CRT_SECURE_NO_WARNINGS)
endif(UNIX)
set(LIBWEBRTC_LIBRARIES webrtc)
add_subdirectory(Targets) add_subdirectory(Targets)
export(PACKAGE LibWebRTC) export(PACKAGE LibWebRTC)

62
CMakeModules/TargetOsAndCpu.cmake Normal file
View file

@ -0,0 +1,62 @@
include(CheckSymbolExists)
function(detect_current_arch)
if (WIN32)
check_symbol_exists("_M_X64" "" ARCH_X64)
if (NOT ARCH_X64)
check_symbol_exists("_M_AMD64" "" ARCH_X64)
endif (NOT ARCH_X64)
check_symbol_exists("_M_IX86" "" ARCH_X86)
check_symbol_exists("_M_ARM" "" ARCH_ARM)
check_symbol_exists("_M_ARM64" "" ARCH_ARM64)
else (WIN32)
check_symbol_exists("__i386__" "" ARCH_X86)
check_symbol_exists("__x86_64__" "" ARCH_X64)
check_symbol_exists("__arm__" "" ARCH_ARM)
check_symbol_exists("__aarch64__" "" ARCH_ARM64)
check_symbol_exists("__mips__" "" ARCH_MIPS)
endif (WIN32)
endfunction(detect_current_arch)
#
# Target CPU
set(TARGET_CPU "" CACHE STRING "Target CPU, used as --target_cpu argument")
set(TARGET_CPU_LIST x86 x64 arm arm64 mipsel)
if (TARGET_CPU STREQUAL "")
detect_current_arch()
if (ARCH_X64)
set(TARGET_CPU "x64")
elseif (ARCH_X86)
set(TARGET_CPU "x86")
elseif (ARCH_ARM64)
set(TARGET_CPU "arm64")
elseif (ARCH_ARM)
set(TARGET_CPU "arm")
elseif (ARCH_MIPS)
set(TARGET_CPU "mipsel")
else ()
set(TARGET_CPU ${CMAKE_SYSTEM_PROCESSOR})
endif (ARCH_X64)
endif (TARGET_CPU STREQUAL "")
if (NOT ${TARGET_CPU} IN_LIST TARGET_CPU_LIST)
message(FATAL_ERROR "Unknown value '${TARGET_CPU}' for variable TARGET_CPU, options are: ${TARGET_CPU_LIST}")
endif (NOT ${TARGET_CPU} IN_LIST TARGET_CPU_LIST)
if (UNIX)
if (ARCH_X86)
set(LIBWEBRTC_REQUIRED_CXX_FLAGS "-m32")
endif (ARCH_X86)
set(LIBWEBRTC_REQUIRED_CXX_FLAGS "${LIBWEBRTC_REQUIRED_CXX_FLAGS} -std=gnu++0x")
list(APPEND LIBWEBRTC_DEFINITIONS
WEBRTC_POSIX _GLIBCXX_USE_CXX11_ABI=0 _CRT_SECURE_NO_WARNINGS)
elseif (WIN32)
set(LIBWEBRTC_REQUIRED_C_FLAGS_DEBUG "/MTd")
set(LIBWEBRTC_REQUIRED_C_FLAGS_RELEASE "/MT")
set(LIBWEBRTC_REQUIRED_CXX_FLAGS_DEBUG "/MTd")
set(LIBWEBRTC_REQUIRED_CXX_FLAGS_RELEASE "/MT")
list(APPEND LIBWEBRTC_DEFINITIONS WEBRTC_WIN NOMINMAX _CRT_SECURE_NO_WARNINGS)
endif(UNIX)