52 lines
1.1 KiB
CMake
52 lines
1.1 KiB
CMake
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# Module that makes the clock_gettime() function available
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#
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# Sets the following variables:
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# HAVE_LIBRT
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# LIBRT_LIBRARIES
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#
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# perform tests
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include(CheckCSourceCompiles)
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# first check if we need to add anything at all to be able to use
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# clock_gettime()
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CHECK_CXX_SOURCE_COMPILES("
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#include <time.h>
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int main()
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{
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timespec time1;
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clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &time1);
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};
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" HAVE_LIBRT)
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cmake_pop_check_state()
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if (HAVE_LIBRT)
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# if this worked, we're already happy
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set(LIBRT_LIBRARIES "")
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else()
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# if not, let's try the same program with linking to librt (required
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# on some systems)
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cmake_push_check_state()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "rt")
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CHECK_CXX_SOURCE_COMPILES("
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#include <time.h>
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int main()
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{
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timespec time1;
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clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &time1);
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};
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" HAVE_LIBRT2)
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cmake_pop_check_state()
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set(HAVE_LIBRT "${HAVE_LIBRT2}")
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if (HAVE_LIBRT)
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set(LIBRT_LIBRARIES "rt")
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endif()
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(LibRT
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DEFAULT_MSG
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HAVE_LIBRT
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)
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