[PATCH] euidaccess: speed up 'configure' on GNU hosts

[Paul Eggert]

---
 ChangeLog        | 8 ++++++++
 m4/euidaccess.m4 | 8 ++++----
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 62b0cf6..32c4c3e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2012-10-16  Paul Eggert  <address@hidden>
 
+       euidaccess: speed up 'configure' on GNU hosts
+       * m4/euidaccess.m4 (gl_FUNC_NONREENTRANT_EUIDACCESS):
+       Check for setregid here, not in gl_PREREQ_EUIDACCESS, since
+       it's needed only in this case.  Use AC_CHECK_DECLS, not
+       AC_CHECK_DECLS_ONCE.
+       (gl_PREREQ_EUIDACCESS): Do not use AC_CHECK_HEADERS_ONCE libgen.h
+       or AC_REQUIRE for AC_FUNC_GETGROUPS.
+
        * lib/regexec.c (re_search_internal): Fix grammar in comment.
 
 2012-10-15  Paul Eggert  <address@hidden>
diff --git a/m4/euidaccess.m4 b/m4/euidaccess.m4
index 841da01..2de95b8 100644
--- a/m4/euidaccess.m4
+++ b/m4/euidaccess.m4
@@ -1,4 +1,4 @@
-# euidaccess.m4 serial 14
+# euidaccess.m4 serial 15
 dnl Copyright (C) 2002-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -7,6 +7,7 @@ dnl with or without modifications, as long as this notice is 
preserved.
 AC_DEFUN([gl_FUNC_NONREENTRANT_EUIDACCESS],
 [
   AC_REQUIRE([gl_FUNC_EUIDACCESS])
+  AC_CHECK_DECLS([setregid])
   AC_DEFINE([PREFER_NONREENTRANT_EUIDACCESS], [1],
     [Define this if you prefer euidaccess to return the correct result
      even if this would make it nonreentrant.  Define this only if your
@@ -33,9 +34,8 @@ AC_DEFUN([gl_PREREQ_EUIDACCESS], [
   dnl Prefer POSIX faccessat over non-standard euidaccess.
   AC_CHECK_FUNCS_ONCE([faccessat])
   dnl Try various other non-standard fallbacks.
-  AC_CHECK_HEADERS_ONCE([libgen.h])
-  AC_CHECK_DECLS_ONCE([setregid])
-  AC_REQUIRE([AC_FUNC_GETGROUPS])
+  AC_CHECK_HEADERS([libgen.h])
+  AC_FUNC_GETGROUPS
 
   # Solaris 9 and 10 need -lgen to get the eaccess function.
   # Save and restore LIBS so -lgen isn't added to it.  Otherwise, *all*
-- 
1.7.11.7