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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
# We can't create the same interface imported target multiple times, CMake will complain if we do
# that. This can happen if the find_package call is done in multiple different subdirectories.
if(TARGET WrapRt::WrapRt)
set(WrapRt_FOUND ON)
return()
endif()
set(WrapRt_FOUND OFF)
include(CheckCXXSourceCompiles)
include(CMakePushCheckState)
find_library(LIBRT rt)
cmake_push_check_state()
if(LIBRT)
list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBRT}")
endif()
check_cxx_source_compiles("
#include <time.h>
#include <unistd.h>
int main(int, char **) {
struct timespec ts;
clock_gettime(CLOCK_REALTIME, &ts);
return 0;
}
" HAVE_GETTIME)
check_cxx_source_compiles("
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
int main(int, char **) {
shm_open(\"test\", O_RDWR | O_CREAT | O_EXCL, 0666);
shm_unlink(\"test\");
return 0;
}
" HAVE_SHM_OPEN_SHM_UNLINK)
cmake_pop_check_state()
if(HAVE_GETTIME OR HAVE_SHM_OPEN_SHM_UNLINK)
set(WrapRt_FOUND ON)
add_library(WrapRt::WrapRt INTERFACE IMPORTED)
if (LIBRT)
target_link_libraries(WrapRt::WrapRt INTERFACE "${LIBRT}")
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(WrapRt DEFAULT_MSG WrapRt_FOUND)
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