[iptables] build: resolve autotools suggestions

[Pablo Neira]

Gitweb:		http://git.netfilter.org/cgi-bin/gitweb.cgi?p=iptables.git;a=commit;h=0086b8bf9cf74642f6d6d82d9bbaedc80fec1dca
commit 0086b8bf9cf74642f6d6d82d9bbaedc80fec1dca
Author:     Jan Engelhardt <jengelh at medozas.de>
AuthorDate: Wed Jan 7 15:11:59 2009 +0100
Commit:     Pablo Neira Ayuso <pablo at netfilter.org>
CommitDate: Wed Jan 7 15:11:59 2009 +0100

    build: resolve autotools suggestions
    
    libtool2 wants to put files into m4, so let it have it.
    
    Signed-off-by: Jan Engelhardt <jengelh at medozas.de>
    Signed-off-by: Pablo Neira Ayuso <pablo at netfilter.org>
       via  0086b8bf9cf74642f6d6d82d9bbaedc80fec1dca (commit)
      from  8783071f70e0d9351cde8bfe5f9360e831388415 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit 0086b8bf9cf74642f6d6d82d9bbaedc80fec1dca
Author: Jan Engelhardt <jengelh at medozas.de>
Date:   Wed Jan 7 15:11:59 2009 +0100

    build: resolve autotools suggestions
    
    libtool2 wants to put files into m4, so let it have it.
    
    Signed-off-by: Jan Engelhardt <jengelh at medozas.de>
    Signed-off-by: Pablo Neira Ayuso <pablo at netfilter.org>

-----------------------------------------------------------------------

 Makefile.am   |    1 +
 configure.ac  |   10 ++++++----
 m4/.gitignore |    2 ++
 3 files changed, 9 insertions(+), 4 deletions(-)
 create mode 100644 m4/.gitignore
libtool2 wants to put files into m4, so let it have it.

Signed-off-by: Jan Engelhardt <jengelh at medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo at netfilter.org>

diff --git a/Makefile.am b/Makefile.am
index 5465db6..ced23b3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,6 @@
 # -*- Makefile -*-
 
+ACLOCAL_AMFLAGS  = -I m4
 AUTOMAKE_OPTIONS = foreign subdir-objects
 
 AM_CFLAGS        = ${regular_CFLAGS} -I${top_builddir}/include -I${top_srcdir}/include ${kinclude_CFLAGS}
diff --git a/configure.ac b/configure.ac
index 39fa0ec..8c9c30d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,12 +7,13 @@ define([_XTABLES_VERSION],_XTABLES_VERSION_MAJOR._XTABLES_VERSION_MINOR._XTABLES
 
 AC_INIT([iptables], _XTABLES_VERSION)
 AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
 AC_PROG_INSTALL
-AM_INIT_AUTOMAKE
+AM_INIT_AUTOMAKE([-Wall])
 AC_PROG_CC
 AM_PROG_CC_C_O
 AC_DISABLE_STATIC
-AC_PROG_LIBTOOL
+AM_PROG_LIBTOOL
 
 AC_ARG_WITH([kernel],
 	AS_HELP_STRING([--with-kernel=PATH],
@@ -83,5 +84,6 @@ AC_SUBST([XTABLES_VERSION_MINOR])
 AC_SUBST([XTABLES_VERSION_PATCH])
 AC_SUBST([XTABLES_VERSION_EXTRA])
 
-AC_OUTPUT([Makefile extensions/GNUmakefile libipq/Makefile include/xtables.h
-	xtables.pc])
+AC_CONFIG_FILES([Makefile extensions/GNUmakefile libipq/Makefile
+	include/xtables.h xtables.pc])
+AC_OUTPUT
diff --git a/m4/.gitignore b/m4/.gitignore
new file mode 100644
index 0000000..64d9bbc
--- /dev/null
+++ b/m4/.gitignore
@@ -0,0 +1,2 @@
+/libtool.m4
+/lt*.m4