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CMake: Fix architecture detection on MSVC 

CMAKE_SYSTEM_ARCHICTETURE always returns the *host* not target arch
when using the MSVC generators. (CMake bugs 15170 and 14342.)
This commit is contained in:
Yuri Kunde Schlesner 2015-08-28 16:55:22 -03:00
parent 2aad510c84
commit eb26a1941e
1 changed files with 31 additions and 5 deletions
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36
CMakeLists.txt
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@ -2,6 +2,23 @@
# dependent libraries.
cmake_minimum_required(VERSION 2.8.11)
include(CheckSymbolExists)
function(detect_architecture symbol arch)
if (NOT DEFINED ARCHITECTURE)
set(CMAKE_REQUIRED_QUIET 1)
check_symbol_exists("${symbol}" "" ARCHITECTURE_${arch})
unset(CMAKE_REQUIRED_QUIET)
# The output variable needs to be unique across invocations otherwise
# CMake's crazy scope rules will keep it defined
if (ARCHITECTURE_${arch})
set(ARCHITECTURE "${arch}" PARENT_SCOPE)
set(ARCHITECTURE_${arch} 1 PARENT_SCOPE)
add_definitions(-DARCHITECTURE_${arch}=1)
endif()
endif()
endfunction()
project(citra)
if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git/hooks/pre-commit)
@ -10,12 +27,21 @@ if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git/hooks/pre-commit)
DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/.git/hooks)
endif()
# Platform-agnostic definition to check if we are on x86_64
if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "[xX]86_64" OR
${CMAKE_SYSTEM_PROCESSOR} MATCHES "[aA][mM][dD]64")
set(ARCHITECTURE_x86_64 1)
add_definitions(-DARCHITECTURE_x86_64=1)
if (MSVC)
detect_architecture("_M_AMD64" x86_64)
detect_architecture("_M_IX86" x86)
detect_architecture("_M_ARM" ARM)
else()
detect_architecture("__x86_64__" x86_64)
detect_architecture("__i386__" x86)
detect_architecture("__arm__" ARM)
endif()
if (NOT DEFINED ARCHITECTURE)
set(ARCHITECTURE "GENERIC")
set(ARCHITECTURE_GENERIC 1)
add_definitions(-DARCHITECTURE_GENERIC=1)
endif()
message(STATUS "Target architecture: ${ARCHITECTURE}")
if (NOT MSVC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wno-attributes -pthread")