[PATCH 3/N] some minor fixes in sim, gold, gdb

[Ralf Wildenhues <Ralf dot Wildenhues at gmx dot de>]

> - some minor fixes in sim, gold, gdb (src only)

These are:

- use the 'foreign' Automake option for gold.  Currently, gold
  is updated with "automake --foreign" manually, this just avoids
  the need to remember that option.

- gdb: replace obsolete macros with AC_USE_SYSTEM_EXTENSIONS.
  This change needs to come at the same time as the Autoconf update,
  as it assumes newer Autoconf semantics to properly replace the
  other macros.

- sim/common/aclocal.m4: SIM_CHECK_MEMBER is alias for AC_CHECK_MEMBER now.
  This also needs to happen at the same time as the Autoconf update, to
  avoid exposing whatever bugs 2.59's AC_CHECK_MEMBER had.
  Is this ok or would you rather I replace every use of SIM_CHECK_MEMBER
  with AC_CHECK_MEMBER?

Thanks,
Ralf

gold/ChangeLog:
2009-08-15  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

	* Makefile.am (AUTOMAKE_OPTIONS): Add foreign.

gdb/ChangeLog:
2009-08-15  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

	* configure.ac: Use AC_USE_SYSTEM_EXTENSIONS instead of
	AC_GNU_SOURCE, AC_AIX, AC_ISC_POSIX.

sim/common/ChangeLog:
2009-08-15  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

	* aclocal.m4 (SIM_CHECK_MEMBER): Replace definition with
	definition of AC_CHECK_MEMBER.

diff --git a/gold/Makefile.am b/gold/Makefile.am
index 14173c1..448a3b8 100644
--- a/gold/Makefile.am
+++ b/gold/Makefile.am
@@ -1,6 +1,6 @@
 # Process this file with automake to generate Makefile.in
 
-AUTOMAKE_OPTIONS =
+AUTOMAKE_OPTIONS = foreign
 
 SUBDIRS = po testsuite
 
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 77f8436..9dc736c 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -26,9 +26,7 @@ AC_CONFIG_HEADER(config.h:config.in)
 AM_MAINTAINER_MODE
 
 AC_PROG_CC
-AC_GNU_SOURCE
-AC_AIX
-AC_ISC_POSIX
+AC_USE_SYSTEM_EXTENSIONS
 gl_EARLY
 AM_PROG_CC_STDC
 
diff --git a/sim/common/aclocal.m4 b/sim/common/aclocal.m4
index e8fd147..25ed460 100644
--- a/sim/common/aclocal.m4
+++ b/sim/common/aclocal.m4
@@ -942,28 +942,7 @@ dnl
 dnl  ---------------------------------------------------------
 dnl  AGGREGATE.MEMBER is for instance `struct passwd.pw_gecos', shell
 dnl  variables are not a valid argument.
-AC_DEFUN([SIM_CHECK_MEMBER],
-dnl Extract the aggregate name, and the member name
-[AC_CACHE_CHECK([for $1], [ac_]patsubst([$1], [[\. ]], [_]),
-[ac_]patsubst([$1], [[\. ]], [_])[=no;]
-AC_TRY_COMPILE([$4],[
-dnl AGGREGATE ac_aggr;
-static ]patsubst([$1], [\..*])[ ac_aggr;
-dnl ac_aggr.MEMBER;
-if (ac_aggr.]patsubst([$1], [^[^.]*\.])[)
-return 0;],[ac_]patsubst([$1], [[\. ]], [_])[=yes;],
-AC_TRY_COMPILE([$4],[
-dnl AGGREGATE ac_aggr;
-static ]patsubst([$1], [\..*])[ ac_aggr;
-dnl ac_aggr.MEMBER;
-if (sizeof ac_aggr.]patsubst([$1], [^[^.]*\.])[)
-return 0;],
-[ac_]patsubst([$1], [[\. ]], [_])[=yes;],
-[ac_]patsubst([$1], [[\. ]], [_])[=no;]))
-[if test [$]ac_]patsubst([$1], [[\. ]], [_])[ = yes; then :; [$2]
-else :; [$3]
-fi])
-])dnl SIM_CHECK_MEMBER
+AC_DEFUN([SIM_CHECK_MEMBER], defn([AC_CHECK_MEMBER]))
 dnl
 dnl Translated from a FC2 autoconf-2.59-3 installation.
 dnl  SIM_CHECK_MEMBERS([AGGREGATE.MEMBER, ...])