(gl_GETDATE): Remove AC_FUNC_ALLOCA.

[gnulib.git] / m4 / nanosleep.m4

diff --git a/m4/nanosleep.m4 b/m4/nanosleep.m4
index 0395804..0cf4094 100644 (file)
--- a/m4/nanosleep.m4
+++ b/m4/nanosleep.m4
@@ -1,20 +1,26 @@
-#serial 2
+#serial 10

 
 dnl From Jim Meyering.
 dnl Check for the nanosleep function.
 dnl If not found, use the supplied replacement.
 dnl
 
 
 dnl From Jim Meyering.
 dnl Check for the nanosleep function.
 dnl If not found, use the supplied replacement.
 dnl
 

-AC_DEFUN(jm_FUNC_NANOSLEEP,
+AC_DEFUN([gl_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.
  # 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],
+                [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,
   [
 
  AC_CACHE_CHECK([whether nanosleep works],
   jm_cv_func_nanosleep_works,
   [

-   AC_HEADER_TIME
+   AC_REQUIRE([AC_HEADER_TIME])
+   AC_CHECK_HEADERS_ONCE(sys/time.h)

    AC_TRY_RUN([
 #   if TIME_WITH_SYS_TIME
 #    include <sys/time.h>
    AC_TRY_RUN([
 #   if TIME_WITH_SYS_TIME
 #    include <sys/time.h>


@@ -39,12 +45,20 @@ AC_DEFUN(jm_FUNC_NANOSLEEP,
         jm_cv_func_nanosleep_works=yes,
         jm_cv_func_nanosleep_works=no,
         dnl When crosscompiling, assume the worst.
         jm_cv_func_nanosleep_works=yes,
         jm_cv_func_nanosleep_works=no,
         dnl When crosscompiling, assume the worst.

-        jm_cv_func_nanosleep_works=yes)
+        jm_cv_func_nanosleep_works=no)

   ])
   if test $jm_cv_func_nanosleep_works = no; then
   ])
   if test $jm_cv_func_nanosleep_works = no; then

-    AC_SUBST(LIBOBJS)
-    LIBOBJS="$LIBOBJS nanosleep.$ac_objext"
-    AC_DEFINE_UNQUOTED(nanosleep, gnu_nanosleep,
-      [Define to gnu_nanosleep if the replacement function should be used.])
+    AC_LIBOBJ(nanosleep)
+    AC_DEFINE(nanosleep, rpl_nanosleep,
+      [Define to rpl_nanosleep if the replacement function should be used.])
+    gl_PREREQ_NANOSLEEP

   fi
   fi

+
+ LIBS=$nanosleep_save_libs
+])
+
+# Prerequisites of lib/nanosleep.c.
+AC_DEFUN([gl_PREREQ_NANOSLEEP],
+[
+  AC_CHECK_HEADERS_ONCE(unistd.h)

 ])
 ])