From 264e996e0fbbed3915d8ea213a9daf91f6288bb0 Mon Sep 17 00:00:00 2001 From: Jukka Jyl?nki Date: Tue, 13 Sep 2016 00:03:50 -0700 Subject: [PATCH] Fix CMake CMAKE_REQUIRED_FLAGS handling to preserve existing CMake flags required by Emscripten toolchain. --- CMakeLists.txt | 2 +- cmake/sdlchecks.cmake | 15 +++++++++------ 2 files changed, 10 insertions(+), 7 deletions(-) diff --git a/CMakeLists.txt b/CMakeLists.txt index 33d7b6b21..e45d9f2a8 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -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 ${ORIG_CMAKE_REQUIRED_FLAGS}) diff --git a/cmake/sdlchecks.cmake b/cmake/sdlchecks.cmake index c4616cca0..08b39ee77 100644 --- a/cmake/sdlchecks.cmake +++ b/cmake/sdlchecks.cmake @@ -766,7 +766,8 @@ macro(CheckPTHREAD) endif() # Run some tests - set(CMAKE_REQUIRED_FLAGS "${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 @@ -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 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)