X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fnanosleep.m4;h=bfe8d574574ba3a7063bc0d03864e4bf8b580d44;hb=455b3a9a5e1861152fe403dea25636586d256544;hp=b431456c79bf778e5d3cac37027d62be56537d52;hpb=6fe8d7498529e40705598c70355fd2f38efc7aea;p=gnulib.git

diff --git a/m4/nanosleep.m4 b/m4/nanosleep.m4
index b431456c7..bfe8d5745 100644
--- a/m4/nanosleep.m4
+++ b/m4/nanosleep.m4
@@ -1,4 +1,4 @@
-#serial 8
+#serial 9
 
 dnl From Jim Meyering.
 dnl Check for the nanosleep function.
@@ -18,6 +18,7 @@ AC_DEFUN([jm_FUNC_NANOSLEEP],
   jm_cv_func_nanosleep_works,
   [
    AC_REQUIRE([AC_HEADER_TIME])
+   AC_CHECK_HEADERS_ONCE(sys/time.h)
    AC_TRY_RUN([
 #   if TIME_WITH_SYS_TIME
 #    include <sys/time.h>
@@ -48,7 +49,14 @@ AC_DEFUN([jm_FUNC_NANOSLEEP],
     AC_LIBOBJ(nanosleep)
     AC_DEFINE(nanosleep, rpl_nanosleep,
       [Define to rpl_nanosleep if the replacement function should be used.])
+    gl_PREREQ_NANOSLEEP
   fi
 
  LIBS=$nanosleep_save_libs
 ])
+
+# Prerequisites of lib/nanosleep.c.
+AC_DEFUN([gl_PREREQ_NANOSLEEP],
+[
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+])