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Fix CMake CMAKE_REQUIRED_FLAGS handling to preserve existing CMake flags required by Emscripten toolchain.

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This commit is contained in:
Jukka Jyl?nki 2016-09-13 00:03:50 -07:00
parent b54eb82c67
commit 264e996e0f
2 changed files with 10 additions and 7 deletions
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2
CMakeLists.txt
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@ -205,7 +205,7 @@ set(ORIG_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
if(CYGWIN)
# We build SDL on cygwin without the UNIX emulation layer
include_directories("-I/usr/include/mingw")
set(CMAKE_REQUIRED_FLAGS "-mno-cygwin")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mno-cygwin")
check_c_source_compiles("int main(int argc, char **argv) {}"
HAVE_GCC_NO_CYGWIN)
set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})

15
cmake/sdlchecks.cmake
View file

@ -766,7 +766,8 @@ macro(CheckPTHREAD)
endif()
# Run some tests
set(CMAKE_REQUIRED_FLAGS "${PTHREAD_CFLAGS} ${PTHREAD_LDFLAGS}")
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${PTHREAD_CFLAGS} ${PTHREAD_LDFLAGS}")
if(CMAKE_CROSSCOMPILING)
set(HAVE_PTHREADS 1)
else()
@ -828,7 +829,7 @@ macro(CheckPTHREAD)
int main(int argc, char** argv) { return 0; }" HAVE_PTHREAD_NP_H)
check_function_exists(pthread_setname_np HAVE_PTHREAD_SETNAME_NP)
check_function_exists(pthread_set_name_np HAVE_PTHREAD_SET_NAME_NP)
set(CMAKE_REQUIRED_FLAGS)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
set(SOURCE_FILES ${SOURCE_FILES}
${SDL2_SOURCE_DIR}/src/thread/pthread/SDL_systhread.c
@ -882,7 +883,8 @@ macro(CheckUSBHID)
endif()
endif()
set(CMAKE_REQUIRED_FLAGS "${USB_CFLAGS}")
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${USB_CFLAGS}")
set(CMAKE_REQUIRED_LIBRARIES "${USB_LIBS}")
check_c_source_compiles("
#include <sys/types.h>
@ -983,7 +985,7 @@ macro(CheckUSBHID)
set(HAVE_SDL_JOYSTICK TRUE)
set(CMAKE_REQUIRED_LIBRARIES)
set(CMAKE_REQUIRED_FLAGS)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
endif()
endmacro()
@ -997,12 +999,13 @@ macro(CheckRPI)
listtostr(VIDEO_RPI_INCLUDE_DIRS VIDEO_RPI_INCLUDE_FLAGS "-I")
listtostr(VIDEO_RPI_LIBRARY_DIRS VIDEO_RPI_LIBRARY_FLAGS "-L")
set(CMAKE_REQUIRED_FLAGS "${VIDEO_RPI_INCLUDE_FLAGS} ${VIDEO_RPI_LIBRARY_FLAGS}")
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${VIDEO_RPI_INCLUDE_FLAGS} ${VIDEO_RPI_LIBRARY_FLAGS}")
set(CMAKE_REQUIRED_LIBRARIES "${VIDEO_RPI_LIBS}")
check_c_source_compiles("
#include <bcm_host.h>
int main(int argc, char **argv) {}" HAVE_VIDEO_RPI)
set(CMAKE_REQUIRED_FLAGS)
set(CMAKE_REQUIRED_FLAGS "${ORIG_CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_LIBRARIES)
if(SDL_VIDEO AND HAVE_VIDEO_RPI)