i seem to remember carlos having been proud of being able to compile 
wm with no warnings.

i guess this should be called the "carlos special" patch, then :)

>From e14bc2b00554d982a26dd3f4f89815db717f978d Mon Sep 17 00:00:00 2001
From: Tamas TEVESZ <[email protected]>
Date: Wed, 31 Mar 2010 04:54:11 +0200
Subject: [PATCH] Autoconf mods

- according to the automake manual, `acinclude.m4' is the old style
  of doing stuff, putting local macros in their own directory is the
  way to go, so move acincluce.m4 to m4/windowmaker.m4
- reflect this in autogen.sh and Makefile.am
- while there, add a `conditionally set cflags' macro from the
  autoconf macro archive
- use this to slightly pump warning levels up if we are on gcc
---
 Makefile.am                |    2 +
 acinclude.m4               |   59 ------------
 autogen.sh                 |    4 +-
 configure.ac               |    3 +
 m4/ax_cflags_gcc_option.m4 |  221 ++++++++++++++++++++++++++++++++++++++++++++
 m4/windowmaker.m4          |   59 ++++++++++++
 6 files changed, 287 insertions(+), 61 deletions(-)
 delete mode 100644 acinclude.m4
 create mode 100644 m4/ax_cflags_gcc_option.m4
 create mode 100644 m4/windowmaker.m4

diff --git a/Makefile.am b/Makefile.am
index 3ad745d..a0985d5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,7 @@
 ## Process this file with automake to produce Makefile.in
 
+ACLOCAL_AMFLAGS = -I m4
+
 SUBDIRS = wrlib WINGs src util po WindowMaker WPrefs.app doc
 
 EXTRA_DIST = TODO BUGS BUGFORM FAQ FAQ.I18N FAQ.I18N.cs FAQ.I18N.sk \
diff --git a/acinclude.m4 b/acinclude.m4
deleted file mode 100644
index e53fcb8..0000000
--- a/acinclude.m4
+++ /dev/null
@@ -1,59 +0,0 @@
-dnl
-dnl WM_CHECK_LIB(NAME, FUNCTION, EXTRALIBS)
-dnl
-AC_DEFUN([WM_CHECK_LIB],
-[
-LDFLAGS_old="$LDFLAGS"
-LDFLAGS="$LDFLAGS $lib_search_path"
-AC_CHECK_LIB([$1],[$2],yes=yes,no=no,[$3])
-LDFLAGS="$LDFLAGS_old"
-])
-
-dnl
-dnl WM_CHECK_HEADER(NAME)
-dnl
-AC_DEFUN([WM_CHECK_HEADER],
-[
-CPPFLAGS_old="$CPPFLAGS"
-CPPFLAGS="$CPPFLAGS $inc_search_path"
-AC_CHECK_HEADER([$1])
-CPPFLAGS="$CPPFLAGS_old"
-])
-
-
-dnl
-dnl WM_CHECK_XFT_VERSION(MIN_VERSION, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])
-dnl
-dnl # $XFTFLAGS should be defined before calling this macro,
-dnl # else it will not be able to find Xft.h
-dnl
-AC_DEFUN([WM_CHECK_XFT_VERSION],
-[
-CPPFLAGS_old="$CPPFLAGS"
-CPPFLAGS="$CPPFLAGS $XFTFLAGS $inc_search_path"
-xft_major_version=`echo $1 | sed 
's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
-xft_minor_version=`echo $1 | sed 
's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
-xft_micro_version=`echo $1 | sed 
's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
-AC_MSG_CHECKING([whether libXft is at least version $1])
-AC_CACHE_VAL(ac_cv_lib_xft_version_ok,
-[AC_TRY_LINK(
-[/* Test version of libXft we have */
-#include <X11/Xlib.h>
-#include <X11/Xft/Xft.h>
-
-#if !defined(XFT_VERSION) || XFT_VERSION < $xft_major_version*10000 + 
$xft_minor_version*100 + $xft_micro_version
-#error libXft on this system is too old. Consider upgrading to at least $1
-#endif
-], [], 
-eval "ac_cv_lib_xft_version_ok=yes", 
-eval "ac_cv_lib_xft_version_ok=no")])
-if eval "test \"`echo '$ac_cv_lib_xft_version_ok'`\" = yes"; then
-  AC_MSG_RESULT(yes)
-  ifelse([$2], , :, [$2])
-else
-  AC_MSG_RESULT(no)
-  ifelse([$3], , , [$3])
-fi
-CPPFLAGS="$CPPFLAGS_old"
-])
-
diff --git a/autogen.sh b/autogen.sh
index 1b04bc8..ddeedfa 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -35,8 +35,8 @@ fi
 
 echo "  libtoolize --copy --force --automake"
 libtoolize --copy --force --automake
-echo "  aclocal -I . $ACLOCAL_FLAGS"
-aclocal -I . $ACLOCAL_FLAGS
+echo "  aclocal -I m4 $ACLOCAL_FLAGS"
+aclocal -I m4 $ACLOCAL_FLAGS
 echo "  autoheader"
 autoheader
 echo "  automake --add-missing --gnu --include-deps"
diff --git a/configure.ac b/configure.ac
index 3133f00..6244bc7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,6 +37,9 @@ dnl AC_PROG_INSTALL -- already done by AM_INIT_AUTOMAKE
 AC_PROG_LN_S
 AC_PROG_GCC_TRADITIONAL
 
+AX_CFLAGS_GCC_OPTION(-Wall)
+AX_CFLAGS_GCC_OPTION(-Wextra)
+
 dnl Platform-specific Makefile setup
 dnl ================================
 
diff --git a/m4/ax_cflags_gcc_option.m4 b/m4/ax_cflags_gcc_option.m4
new file mode 100644
index 0000000..ec31c39
--- /dev/null
+++ b/m4/ax_cflags_gcc_option.m4
@@ -0,0 +1,221 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_cflags_gcc_option.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CFLAGS_GCC_OPTION (optionflag [,[shellvar][,[A][,[NA]]])
+#
+# DESCRIPTION
+#
+#   AX_CFLAGS_GCC_OPTION(-fvomit-frame) would show a message as like
+#   "checking CFLAGS for gcc -fvomit-frame ... yes" and adds the optionflag
+#   to CFLAGS if it is understood. You can override the shellvar-default of
+#   CFLAGS of course. The order of arguments stems from the explicit macros
+#   like AX_CFLAGS_WARN_ALL.
+#
+#   The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add to
+#   CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it
+#   is possible to use different compilers for C and C++).
+#
+#   The macro is a lot simpler than any special AX_CFLAGS_* macro (or
+#   ax_cxx_rtti.m4 macro) but allows to check for arbitrary options.
+#   However, if you use this macro in a few places, it would be great if you
+#   would make up a new function-macro and submit it to the ac-archive.
+#
+#     - $1 option-to-check-for : required ("-option" as non-value)
+#     - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
+#     - $3 action-if-found : add value to shellvariable
+#     - $4 action-if-not-found : nothing
+#
+#   Note: in earlier versions, $1-$2 were swapped. We try to detect the
+#   situation and accept a $2=~/-/ as being the old option-to-check-for.
+#
+#   There are other variants that emerged from the original macro variant
+#   which did just test an option to be possibly added. However, some
+#   compilers accept an option silently, or possibly for just another option
+#   that was not intended. Therefore, we have to do a generic test for a
+#   compiler family. For gcc we check "-pedantic" being accepted which is
+#   also understood by compilers who just want to be compatible with gcc
+#   even when not being made from gcc sources.
+#
+#   See also: AX_CFLAGS_SUN_OPTION, AX_CFLAGS_HPUX_OPTION,
+#   AX_CFLAGS_AIX_OPTION, and AX_CFLAGS_IRIX_OPTION.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <[email protected]>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 2 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 8
+
+AC_DEFUN([AX_CFLAGS_GCC_OPTION_OLD], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$2])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($2,$2,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_OLD], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$2])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($2,$2,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+dnl -------------------------------------------------------------------------
+
+AC_DEFUN([AX_CFLAGS_GCC_OPTION_NEW], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$1])dnl
+AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($1,$1,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
+                      m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_NEW], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$1])dnl
+AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($1,$1,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
+                      m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+AC_DEFUN([AX_CFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
+[AX_CFLAGS_GCC_OPTION_NEW($@)],[AX_CFLAGS_GCC_OPTION_OLD($@)])])
+
+AC_DEFUN([AX_CXXFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
+[AX_CXXFLAGS_GCC_OPTION_NEW($@)],[AX_CXXFLAGS_GCC_OPTION_OLD($@)])])
diff --git a/m4/windowmaker.m4 b/m4/windowmaker.m4
new file mode 100644
index 0000000..e53fcb8
--- /dev/null
+++ b/m4/windowmaker.m4
@@ -0,0 +1,59 @@
+dnl
+dnl WM_CHECK_LIB(NAME, FUNCTION, EXTRALIBS)
+dnl
+AC_DEFUN([WM_CHECK_LIB],
+[
+LDFLAGS_old="$LDFLAGS"
+LDFLAGS="$LDFLAGS $lib_search_path"
+AC_CHECK_LIB([$1],[$2],yes=yes,no=no,[$3])
+LDFLAGS="$LDFLAGS_old"
+])
+
+dnl
+dnl WM_CHECK_HEADER(NAME)
+dnl
+AC_DEFUN([WM_CHECK_HEADER],
+[
+CPPFLAGS_old="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $inc_search_path"
+AC_CHECK_HEADER([$1])
+CPPFLAGS="$CPPFLAGS_old"
+])
+
+
+dnl
+dnl WM_CHECK_XFT_VERSION(MIN_VERSION, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])
+dnl
+dnl # $XFTFLAGS should be defined before calling this macro,
+dnl # else it will not be able to find Xft.h
+dnl
+AC_DEFUN([WM_CHECK_XFT_VERSION],
+[
+CPPFLAGS_old="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $XFTFLAGS $inc_search_path"
+xft_major_version=`echo $1 | sed 
's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+xft_minor_version=`echo $1 | sed 
's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+xft_micro_version=`echo $1 | sed 
's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+AC_MSG_CHECKING([whether libXft is at least version $1])
+AC_CACHE_VAL(ac_cv_lib_xft_version_ok,
+[AC_TRY_LINK(
+[/* Test version of libXft we have */
+#include <X11/Xlib.h>
+#include <X11/Xft/Xft.h>
+
+#if !defined(XFT_VERSION) || XFT_VERSION < $xft_major_version*10000 + 
$xft_minor_version*100 + $xft_micro_version
+#error libXft on this system is too old. Consider upgrading to at least $1
+#endif
+], [], 
+eval "ac_cv_lib_xft_version_ok=yes", 
+eval "ac_cv_lib_xft_version_ok=no")])
+if eval "test \"`echo '$ac_cv_lib_xft_version_ok'`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  ifelse([$2], , :, [$2])
+else
+  AC_MSG_RESULT(no)
+  ifelse([$3], , , [$3])
+fi
+CPPFLAGS="$CPPFLAGS_old"
+])
+
-- 
1.7.0


-- 
[-]

mkdir /nonexistent
From e14bc2b00554d982a26dd3f4f89815db717f978d Mon Sep 17 00:00:00 2001
From: Tamas TEVESZ <[email protected]>
Date: Wed, 31 Mar 2010 04:54:11 +0200
Subject: [PATCH] Autoconf mods

- according to the automake manual, `acinclude.m4' is the old style
  of doing stuff, putting local macros in their own directory is the
  way to go, so move acincluce.m4 to m4/windowmaker.m4
- reflect this in autogen.sh and Makefile.am
- while there, add a `conditionally set cflags' macro from the
  autoconf macro archive
- use this to slightly pump warning levels up if we are on gcc
---
 Makefile.am                |    2 +
 acinclude.m4               |   59 ------------
 autogen.sh                 |    4 +-
 configure.ac               |    3 +
 m4/ax_cflags_gcc_option.m4 |  221 ++++++++++++++++++++++++++++++++++++++++++++
 m4/windowmaker.m4          |   59 ++++++++++++
 6 files changed, 287 insertions(+), 61 deletions(-)
 delete mode 100644 acinclude.m4
 create mode 100644 m4/ax_cflags_gcc_option.m4
 create mode 100644 m4/windowmaker.m4

diff --git a/Makefile.am b/Makefile.am
index 3ad745d..a0985d5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,7 @@
 ## Process this file with automake to produce Makefile.in
 
+ACLOCAL_AMFLAGS = -I m4
+
 SUBDIRS = wrlib WINGs src util po WindowMaker WPrefs.app doc
 
 EXTRA_DIST = TODO BUGS BUGFORM FAQ FAQ.I18N FAQ.I18N.cs FAQ.I18N.sk \
diff --git a/acinclude.m4 b/acinclude.m4
deleted file mode 100644
index e53fcb8..0000000
--- a/acinclude.m4
+++ /dev/null
@@ -1,59 +0,0 @@
-dnl
-dnl WM_CHECK_LIB(NAME, FUNCTION, EXTRALIBS)
-dnl
-AC_DEFUN([WM_CHECK_LIB],
-[
-LDFLAGS_old="$LDFLAGS"
-LDFLAGS="$LDFLAGS $lib_search_path"
-AC_CHECK_LIB([$1],[$2],yes=yes,no=no,[$3])
-LDFLAGS="$LDFLAGS_old"
-])
-
-dnl
-dnl WM_CHECK_HEADER(NAME)
-dnl
-AC_DEFUN([WM_CHECK_HEADER],
-[
-CPPFLAGS_old="$CPPFLAGS"
-CPPFLAGS="$CPPFLAGS $inc_search_path"
-AC_CHECK_HEADER([$1])
-CPPFLAGS="$CPPFLAGS_old"
-])
-
-
-dnl
-dnl WM_CHECK_XFT_VERSION(MIN_VERSION, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])
-dnl
-dnl # $XFTFLAGS should be defined before calling this macro,
-dnl # else it will not be able to find Xft.h
-dnl
-AC_DEFUN([WM_CHECK_XFT_VERSION],
-[
-CPPFLAGS_old="$CPPFLAGS"
-CPPFLAGS="$CPPFLAGS $XFTFLAGS $inc_search_path"
-xft_major_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
-xft_minor_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
-xft_micro_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
-AC_MSG_CHECKING([whether libXft is at least version $1])
-AC_CACHE_VAL(ac_cv_lib_xft_version_ok,
-[AC_TRY_LINK(
-[/* Test version of libXft we have */
-#include <X11/Xlib.h>
-#include <X11/Xft/Xft.h>
-
-#if !defined(XFT_VERSION) || XFT_VERSION < $xft_major_version*10000 + $xft_minor_version*100 + $xft_micro_version
-#error libXft on this system is too old. Consider upgrading to at least $1
-#endif
-], [], 
-eval "ac_cv_lib_xft_version_ok=yes", 
-eval "ac_cv_lib_xft_version_ok=no")])
-if eval "test \"`echo '$ac_cv_lib_xft_version_ok'`\" = yes"; then
-  AC_MSG_RESULT(yes)
-  ifelse([$2], , :, [$2])
-else
-  AC_MSG_RESULT(no)
-  ifelse([$3], , , [$3])
-fi
-CPPFLAGS="$CPPFLAGS_old"
-])
-
diff --git a/autogen.sh b/autogen.sh
index 1b04bc8..ddeedfa 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -35,8 +35,8 @@ fi
 
 echo "  libtoolize --copy --force --automake"
 libtoolize --copy --force --automake
-echo "  aclocal -I . $ACLOCAL_FLAGS"
-aclocal -I . $ACLOCAL_FLAGS
+echo "  aclocal -I m4 $ACLOCAL_FLAGS"
+aclocal -I m4 $ACLOCAL_FLAGS
 echo "  autoheader"
 autoheader
 echo "  automake --add-missing --gnu --include-deps"
diff --git a/configure.ac b/configure.ac
index 3133f00..6244bc7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,6 +37,9 @@ dnl AC_PROG_INSTALL -- already done by AM_INIT_AUTOMAKE
 AC_PROG_LN_S
 AC_PROG_GCC_TRADITIONAL
 
+AX_CFLAGS_GCC_OPTION(-Wall)
+AX_CFLAGS_GCC_OPTION(-Wextra)
+
 dnl Platform-specific Makefile setup
 dnl ================================
 
diff --git a/m4/ax_cflags_gcc_option.m4 b/m4/ax_cflags_gcc_option.m4
new file mode 100644
index 0000000..ec31c39
--- /dev/null
+++ b/m4/ax_cflags_gcc_option.m4
@@ -0,0 +1,221 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_cflags_gcc_option.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CFLAGS_GCC_OPTION (optionflag [,[shellvar][,[A][,[NA]]])
+#
+# DESCRIPTION
+#
+#   AX_CFLAGS_GCC_OPTION(-fvomit-frame) would show a message as like
+#   "checking CFLAGS for gcc -fvomit-frame ... yes" and adds the optionflag
+#   to CFLAGS if it is understood. You can override the shellvar-default of
+#   CFLAGS of course. The order of arguments stems from the explicit macros
+#   like AX_CFLAGS_WARN_ALL.
+#
+#   The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add to
+#   CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it
+#   is possible to use different compilers for C and C++).
+#
+#   The macro is a lot simpler than any special AX_CFLAGS_* macro (or
+#   ax_cxx_rtti.m4 macro) but allows to check for arbitrary options.
+#   However, if you use this macro in a few places, it would be great if you
+#   would make up a new function-macro and submit it to the ac-archive.
+#
+#     - $1 option-to-check-for : required ("-option" as non-value)
+#     - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
+#     - $3 action-if-found : add value to shellvariable
+#     - $4 action-if-not-found : nothing
+#
+#   Note: in earlier versions, $1-$2 were swapped. We try to detect the
+#   situation and accept a $2=~/-/ as being the old option-to-check-for.
+#
+#   There are other variants that emerged from the original macro variant
+#   which did just test an option to be possibly added. However, some
+#   compilers accept an option silently, or possibly for just another option
+#   that was not intended. Therefore, we have to do a generic test for a
+#   compiler family. For gcc we check "-pedantic" being accepted which is
+#   also understood by compilers who just want to be compatible with gcc
+#   even when not being made from gcc sources.
+#
+#   See also: AX_CFLAGS_SUN_OPTION, AX_CFLAGS_HPUX_OPTION,
+#   AX_CFLAGS_AIX_OPTION, and AX_CFLAGS_IRIX_OPTION.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <[email protected]>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 2 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 8
+
+AC_DEFUN([AX_CFLAGS_GCC_OPTION_OLD], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$2])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($2,$2,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_OLD], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$2])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($2,$2,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+dnl -------------------------------------------------------------------------
+
+AC_DEFUN([AX_CFLAGS_GCC_OPTION_NEW], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$1])dnl
+AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($1,$1,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
+                      m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_NEW], [dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$1])dnl
+AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % m4_ifval($1,$1,-option)"  dnl   GCC
+   "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete"  dnl new GCC
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
+                      m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+AC_DEFUN([AX_CFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
+[AX_CFLAGS_GCC_OPTION_NEW($@)],[AX_CFLAGS_GCC_OPTION_OLD($@)])])
+
+AC_DEFUN([AX_CXXFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
+[AX_CXXFLAGS_GCC_OPTION_NEW($@)],[AX_CXXFLAGS_GCC_OPTION_OLD($@)])])
diff --git a/m4/windowmaker.m4 b/m4/windowmaker.m4
new file mode 100644
index 0000000..e53fcb8
--- /dev/null
+++ b/m4/windowmaker.m4
@@ -0,0 +1,59 @@
+dnl
+dnl WM_CHECK_LIB(NAME, FUNCTION, EXTRALIBS)
+dnl
+AC_DEFUN([WM_CHECK_LIB],
+[
+LDFLAGS_old="$LDFLAGS"
+LDFLAGS="$LDFLAGS $lib_search_path"
+AC_CHECK_LIB([$1],[$2],yes=yes,no=no,[$3])
+LDFLAGS="$LDFLAGS_old"
+])
+
+dnl
+dnl WM_CHECK_HEADER(NAME)
+dnl
+AC_DEFUN([WM_CHECK_HEADER],
+[
+CPPFLAGS_old="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $inc_search_path"
+AC_CHECK_HEADER([$1])
+CPPFLAGS="$CPPFLAGS_old"
+])
+
+
+dnl
+dnl WM_CHECK_XFT_VERSION(MIN_VERSION, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])
+dnl
+dnl # $XFTFLAGS should be defined before calling this macro,
+dnl # else it will not be able to find Xft.h
+dnl
+AC_DEFUN([WM_CHECK_XFT_VERSION],
+[
+CPPFLAGS_old="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $XFTFLAGS $inc_search_path"
+xft_major_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+xft_minor_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+xft_micro_version=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+AC_MSG_CHECKING([whether libXft is at least version $1])
+AC_CACHE_VAL(ac_cv_lib_xft_version_ok,
+[AC_TRY_LINK(
+[/* Test version of libXft we have */
+#include <X11/Xlib.h>
+#include <X11/Xft/Xft.h>
+
+#if !defined(XFT_VERSION) || XFT_VERSION < $xft_major_version*10000 + $xft_minor_version*100 + $xft_micro_version
+#error libXft on this system is too old. Consider upgrading to at least $1
+#endif
+], [], 
+eval "ac_cv_lib_xft_version_ok=yes", 
+eval "ac_cv_lib_xft_version_ok=no")])
+if eval "test \"`echo '$ac_cv_lib_xft_version_ok'`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  ifelse([$2], , :, [$2])
+else
+  AC_MSG_RESULT(no)
+  ifelse([$3], , , [$3])
+fi
+CPPFLAGS="$CPPFLAGS_old"
+])
+
-- 
1.7.0

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