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| author | Amir Masoud Abdol <amir.abdol@qt.io> | 2023-02-09 16:13:30 +0100 |
|---|---|---|
| committer | Amir Masoud Abdol <amir.abdol@qt.io> | 2023-02-10 22:44:11 +0100 |
| commit | 75ca710370aadf5ad230f9b9059cc8295927430d (patch) | |
| tree | 05603ecdc23349f8cc7c4ec03eca31ce99d9cc49 /cmake/FindWrapRt.cmake | |
| parent | 86d8d67146e20ac9d342a9d8c6901b35c899427e (diff) | |
Improve FindWrapRt, and SHM detection
Apparently, more and more librt functionality are being moved to glibc
these days, e.g., clock_gettime, clock_getres, clock_settime,
clock_getcpuclockid, clock_nanosleep. As Thiago mentioned, in face,
all librt functions are moving into glibc, but unlike the clock_*
functions that I can see are ported from 2.17+, I cannot find out when
and what functions are already ported. So, here, I added a second test
which tries to explicitly look for shm_* functions, if they are there,
as well as the clock_* function, then we are more confident that we
actually have a useful the libRt in the system.
Also, making the FEATURE_posix_SHM depends on UNIX.
Pick-to: 6.5
Fixes: QTBUG-111049
Change-Id: I08b7f4656ecd9313b552fb05ca7096f5b987b95a
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'cmake/FindWrapRt.cmake')
| -rw-r--r-- | cmake/FindWrapRt.cmake | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/cmake/FindWrapRt.cmake b/cmake/FindWrapRt.cmake index 91651c3292..b394b062da 100644 --- a/cmake/FindWrapRt.cmake +++ b/cmake/FindWrapRt.cmake @@ -21,17 +21,31 @@ if(LIBRT) endif() check_cxx_source_compiles(" -#include <unistd.h> #include <time.h> +#include <unistd.h> int main(int, char **) { - timespec ts; clock_gettime(CLOCK_REALTIME, &ts); -}" HAVE_GETTIME) + struct timespec ts; + clock_gettime(CLOCK_REALTIME, &ts); + return 0; +} +" HAVE_GETTIME) -cmake_pop_check_state() +check_cxx_source_compiles(" +#include <sys/types.h> +#include <sys/mman.h> +#include <fcntl.h> +int main(int, char **) { + shm_open(\"test\", O_RDWR | O_CREAT | O_EXCL, 0666); + shm_unlink(\"test\"); + return 0; +} +" HAVE_SHM_OPEN_SHM_UNLINK) + +cmake_pop_check_state() -if(HAVE_GETTIME) +if(HAVE_GETTIME OR HAVE_SHM_OPEN_SHM_UNLINK) set(WrapRt_FOUND ON) add_library(WrapRt::WrapRt INTERFACE IMPORTED) if (LIBRT) |