(jm_FUNC_NANOSLEEP): Save and restore LIBS around

AC_SEARCH_LIBS call for nanosleep.
(LIB_NANOSLEEP): Set and AC_SUBST.

diff --git a/m4/nanosleep.m4 b/m4/nanosleep.m4
index 7e33517..5ed4c47 100644 (file)
--- a/m4/nanosleep.m4
+++ b/m4/nanosleep.m4
@@ -1,4 +1,4 @@
-#serial 5
+#serial 6
 
 dnl From Jim Meyering.
 dnl Check for the nanosleep function.
@@ -7,9 +7,12 @@ dnl
 
 AC_DEFUN(jm_FUNC_NANOSLEEP,
 [
+ nanosleep_save_libs=$LIBS
+
  # Solaris 2.5.1 needs -lposix4 to get the nanosleep function.
  # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
- AC_SEARCH_LIBS(nanosleep, [rt posix4])
+ AC_SEARCH_LIBS(nanosleep, [rt posix4], [LIB_NANOSLEEP=$ac_cv_search_nanosleep])
+ AC_SUBST(LIB_NANOSLEEP)
 
  AC_CACHE_CHECK([whether nanosleep works],
   jm_cv_func_nanosleep_works,
@@ -47,4 +50,6 @@ AC_DEFUN(jm_FUNC_NANOSLEEP,
     AC_DEFINE_UNQUOTED(nanosleep, rpl_nanosleep,
       [Define to rpl_nanosleep if the replacement function should be used.])
   fi
+
+ LIBS=$nanosleep_save_libs
 ])