group-member: Declare function in <unistd.h>.

[gnulib.git] / m4 / group-member.m4

diff --git a/m4/group-member.m4 b/m4/group-member.m4
index 5f7aa8a..a415a32 100644 (file)
--- a/m4/group-member.m4
+++ b/m4/group-member.m4
@@ -1,4 +1,4 @@
-# serial 12
+# serial 13
 
 # Copyright (C) 1999-2001, 2003-2007, 2009-2011 Free Software Foundation, Inc.
 
@@ -10,15 +10,20 @@ dnl Written by Jim Meyering
 
 AC_DEFUN([gl_FUNC_GROUP_MEMBER],
 [
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
   dnl Persuade glibc <unistd.h> to declare group_member().
   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
   dnl Do this replacement check manually because I want the hyphen
   dnl (not the underscore) in the filename.
   AC_CHECK_FUNC([group_member], , [
+    HAVE_GROUP_MEMBER=0
+  ])
+  if test $HAVE_GROUP_MEMBER = 0; then
     AC_LIBOBJ([group-member])
     gl_PREREQ_GROUP_MEMBER
-  ])
+  fi
 ])
 
 # Prerequisites of lib/group-member.c.