X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=configure.ac;h=cf9964b45a2a489427483dc1647abb0a2f196fec;hp=b3096c6d45ca492d781ff35ff059868066fe260b;hb=a0307b90e502a48cc73ca936bce0792f5566ba64;hpb=fe8299e43471c0bb0ef6759d6ffba2fe74d8177e

diff --git a/configure.ac b/configure.ac
index b3096c6..cf9964b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,6 +25,7 @@ AH_TEMPLATE([CONFIG_RCU_HAVE_FUTEX], [Defined when on a system with futex suppor
 AH_TEMPLATE([CONFIG_RCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks cmpxchg instruction.])
 AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.])
 AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
+AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.])
 
 # Allow overriding storage used for TLS variables.
 AC_ARG_ENABLE([compiler-tls],
@@ -221,9 +222,9 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 ])
 
 # Search for clock_gettime
-AC_SEARCH_LIBS([clock_gettime], [rt], [],
-	[AC_MSG_ERROR([Cannot find clock_gettime function.])]
-)
+AC_SEARCH_LIBS([clock_gettime], [rt], [
+	AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
+], [])
 
 # Check for pthread
 AC_CHECK_LIB([pthread], [pthread_create],