fix check for when libc already has clock_gettime / clock_getcpuclockid

* acinclude.m4 (gl_CLOCK_TIME): If both clock_gettime and
  clock_getcpuclockid are present without -lrt and -lposix4, don't add
  any libs to LIB_CLOCK_GETTIME.  Thanks to taylanbarirli@gmail.com.

diff --git a/acinclude.m4 b/acinclude.m4
index f9603d9..0edd4b8 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -614,7 +614,8 @@ AC_DEFUN([gl_CLOCK_TIME],
                       AC_SEARCH_LIBS([clock_getcpuclockid], [rt posix4],
                                      [test "$ac_cv_search_clock_getcpuclockid" = "none required" \
                                       || LIB_CLOCK_GETTIME=$ac_cv_search_clock_getcpuclockid],
-                                     [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
+                                     [test "$ac_cv_search_clock_gettime" = "none required" \
+                                      || LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
                     else
                       LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime
                     fi])