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Link with -lrt with ancient glibc

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This commit is contained in:
Rodrigo Arias 2022-09-29 12:35:25 +02:00
parent 273d4bcc80
commit 41739c8927
1 changed files with 14 additions and 0 deletions
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14
CMakeLists.txt
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@ -60,6 +60,20 @@ set(CMAKE_C_FLAGS_ASAN "${CMAKE_C_FLAGS_DEBUG} \
set(CMAKE_C_FLAGS_UBSAN "${CMAKE_C_FLAGS_DEBUG} -fsanitize=undefined"
CACHE STRING "Flags used by the C compiler during UndefinedBehaviorSanitizer builds." FORCE)
# Required for clock_gettime() in glibc <= 2.17
include(CheckLibraryExists)
check_library_exists(c clock_gettime "" HAVE_CLOCK_GETTIME)
if (NOT HAVE_CLOCK_GETTIME)
check_library_exists(rt clock_gettime "time.h" HAVE_CLOCK_GETTIME_RT)
if (HAVE_CLOCK_GETTIME_RT)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lrt")
set(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES} -lrt")
else()
message(FATAL_ERROR "cannot find clock_gettime()")
endif()
endif()
add_library(ovni SHARED
ovni.c
parson.c