(jm_FUNC_NANOSLEEP): Do not set LIB_NANOSLEEP to the

value, $ac_cv_search_nanosleep, if it's "none required".

diff --git a/m4/nanosleep.m4 b/m4/nanosleep.m4
index bfe8d574574ba3a7063bc0d03864e4bf8b580d44..fd5fd92fc66437e62746c10a87ca8a0d3248d737 100644 (file)
--- a/m4/nanosleep.m4
+++ b/m4/nanosleep.m4
@@ -11,8 +11,10 @@ AC_DEFUN([jm_FUNC_NANOSLEEP],
 
  # 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], [LIB_NANOSLEEP=$ac_cv_search_nanosleep])
- AC_SUBST(LIB_NANOSLEEP)
+ AC_SEARCH_LIBS([nanosleep], [rt posix4],
+                [test "$ac_cv_search_nanosleep" = "none required" ||
+                LIB_NANOSLEEP=$ac_cv_search_nanosleep])
+ AC_SUBST([LIB_NANOSLEEP])
 
  AC_CACHE_CHECK([whether nanosleep works],
   jm_cv_func_nanosleep_works,