rt library for clock_gettime

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cbbf312d49e5e487c99725a7b324ed37ca0d0e34..c81c55b8a86fa27bd0680950aaa4612ae8a9acb1 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,6 +25,7 @@ if (ASAN)
 endif()
 
 set(CMAKE_C_STANDARD 90)
+list(APPEND CMAKE_REQUIRED_LIBRARIES rt)
 
 include (TestBigEndian)
 TEST_BIG_ENDIAN(IS_BIG_ENDIAN)