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CMake: fixes to pthreads detection. 

changes unnecessary check_c_source_runs to check_c_source_compiles,
removes the reduntant cross-compile check, and defines _GNU_SOURCE
for PTHREAD_MUTEX_RECURSIVE checks just like the autotools version.

Fixes: https://github.com/libsdl-org/SDL/issues/4262
Closes:  https://github.com/libsdl-org/SDL/pull/4282
This commit is contained in:
Ozkan Sezer 2021-04-23 01:56:10 +03:00 committed by Ozkan Sezer
parent ca969eb2be
commit 89a2980a6d
1 changed files with 9 additions and 11 deletions
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20
cmake/sdlchecks.cmake
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@ -930,17 +930,13 @@ macro(CheckPTHREAD)
# Run some tests
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()
check_c_source_runs("
#include <pthread.h>
int main(int argc, char** argv) {
pthread_attr_t type;
pthread_attr_init(&type);
return 0;
}" HAVE_PTHREADS)
endif()
check_c_source_compiles("
#include <pthread.h>
int main(int argc, char** argv) {
pthread_attr_t type;
pthread_attr_init(&type);
return 0;
}" HAVE_PTHREADS)
if(HAVE_PTHREADS)
set(SDL_THREAD_PTHREAD 1)
list(APPEND EXTRA_CFLAGS ${PTHREAD_CFLAGS})
@ -949,6 +945,7 @@ macro(CheckPTHREAD)
list(APPEND SDL_LIBS ${PTHREAD_LDFLAGS})
check_c_source_compiles("
#define _GNU_SOURCE 1
#include <pthread.h>
int main(int argc, char **argv) {
pthread_mutexattr_t attr;
@ -959,6 +956,7 @@ macro(CheckPTHREAD)
set(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX 1)
else()
check_c_source_compiles("
#define _GNU_SOURCE 1
#include <pthread.h>
int main(int argc, char **argv) {
pthread_mutexattr_t attr;