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-rw-r--r--configure.ac7
1 files changed, 7 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index ccc58ef7..11d238cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -62,6 +62,13 @@ AC_DEFUN([LIBDRM_CC_TRY_FLAG], [
AC_MSG_RESULT([$libdrm_cc_flag])
])
+dnl We use clock_gettime to check for timeouts in drmWaitVBlank
+
+AC_CHECK_FUNCS([clock_gettime], [CLOCK_LIB=],
+ [AC_CHECK_LIB([rt], [clock_gettime], [CLOCK_LIB=-lrt],
+ [AC_MSG_ERROR([Couldn't find clock_gettime])])])
+AC_SUBST([CLOCK_LIB])
+
dnl Use lots of warning flags with with gcc and compatible compilers
dnl Note: if you change the following variable, the cache is automatically