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commit 4075972
Author: Mike Hommey <mh+mozilla@glandium.org>
Date: Thu Feb 23 11:00:46 2012 +0100
Bug 728968 - Detect clock_gettime when it's not in -lrt. r=khuey
---
configure.in | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)
diff --git configure.in configure.in
index 3ba7e2f..3d0614c 100644
--- configure.in
+++ configure.in
@@ -3728,20 +3728,23 @@ AC_CHECK_FUNCS(random strerror lchown fchmod snprintf statvfs memmove rint stat6
AC_CHECK_FUNCS(flockfile getpagesize)
AC_CHECK_FUNCS(localtime_r strtok_r)
-dnl check for clock_gettime(), the CLOCK_MONOTONIC clock, and -lrt
-_SAVE_LDFLAGS=$LDFLAGS
-LDFLAGS="$LDFLAGS -lrt"
-AC_CACHE_CHECK(for clock_gettime(CLOCK_MONOTONIC) and -lrt,
- ac_cv_have_clock_monotonic,
- [AC_TRY_LINK([#include <time.h>],
- [ struct timespec ts;
- clock_gettime(CLOCK_MONOTONIC, &ts); ],
- ac_cv_have_clock_monotonic=yes,
- ac_cv_have_clock_monotonic=no)])
-LDFLAGS=$_SAVE_LDFLAGS
-if test "$ac_cv_have_clock_monotonic" = "yes"; then
+dnl check for clock_gettime(), the CLOCK_MONOTONIC clock
+AC_CACHE_CHECK(for clock_gettime(CLOCK_MONOTONIC),
+ ac_cv_clock_monotonic,
+ [for libs in "" -lrt; do
+ _SAVE_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $libs"
+ AC_TRY_LINK([#include <time.h>],
+ [ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts); ],
+ ac_cv_clock_monotonic=$libs
+ break,
+ ac_cv_clock_monotonic=no)
+ LDFLAGS="$_SAVE_LDFLAGS"
+ done])
+if test "$ac_cv_clock_monotonic" != "no"; then
HAVE_CLOCK_MONOTONIC=1
- REALTIME_LIBS=-lrt
+ REALTIME_LIBS=$ac_cv_clock_monotonic
AC_DEFINE(HAVE_CLOCK_MONOTONIC)
AC_SUBST(HAVE_CLOCK_MONOTONIC)
AC_SUBST(REALTIME_LIBS)
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