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Autoconf Macro: ax_enable_builddir_uname
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ax_enable_builddir_uname
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Use <a href="ax_enable_builddir.html">AX_ENABLE_BUILDDIR</a> in combination
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with AC_CANONICAL_HOST.
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<p class="indent" style="white-space:nowrap;">
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<code>AX_ENABLE_BUILDDIR_UNAME [(dirstring-or-command
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[,Makefile.mk])]</code>
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If the current configure was run within the srcdir then we move all
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configure-files into a subdir and let the configure steps continue there.
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We provide an option --disable-builddir to suppress the move into a
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$1 = $build (defaults to `uname -msr`.d)
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This macro must be called before AM_INIT_AUTOMAKE. It creates a default
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toplevel srcdir Makefile from the information found in the created toplevel
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builddir Makefile. It just copies the variables and rule-targets, each
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extended with a default rule-execution that recurses into the build
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directory of the current "BUILD". You can override the auto-dection through
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`uname -msr | tr " /" "__"`.d at build-time of course, as in
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make BUILD=i386-mingw-cross
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After the default has been created, additional rules can be appended that
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will not just recurse into the subdirectories and only ever exist in the
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srcdir toplevel makefile - these parts are read from the $2 = Makefile.mk
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The automatic rules are usually scanning the toplevel Makefile for lines
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like '#### $build |$builddir' to recognize the place where to recurse into.
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Usually, the last one is the only one used. However, almost all targets
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have an additional "*-all" rule which makes the script to recurse into
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_all_ variants of the current BUILD (!!) setting. The "-all" suffix can be
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overriden for the macro as well.
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A special rule is only given for things like "dist" that will copy the
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tarball from the builddir to the sourcedir (or $(PUB)) for reason of
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Guido U. Draheim <guidod@gmx.de>
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<pre class="m4source">
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AC_DEFUN([AX_ENABLE_BUILDDIR_UNAME],[
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AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
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AC_REQUIRE([AX_CONFIGURE_ARGS])[]dnl
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AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl
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AS_VAR_PUSHDEF([SUB],[ax_enable_builddir])dnl
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AS_VAR_PUSHDEF([SED],[ax_enable_builddir_sed])dnl
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AC_ARG_ENABLE([builddir], AC_HELP_STRING(
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[--disable-builddir],[disable automatic build in subdir of sources])
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,[SUB="$enableval"], [SUB="yes"])
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if test ".$ac_srcdir_defaulted" != ".no" ; then
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if test ".$srcdir" = ".." ; then
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if test -f config.status ; then
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AC_MSG_NOTICE(toplevel srcdir already configured... skipping subdir build)
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test ".$SUB" = "." && SUB="."
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test ".$SUB" = ".no" && SUB="."
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test ".$BUILD" = "." && BUILD=`uname -msr | tr " /" "__"`.d
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test ".$SUB" = ".yes" && SUB="m4_ifval([$1], [$1],[$BUILD])"
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if test ".$SUB" != ".." ; then # we know where to go and
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echo __.$SUB.__ > $SUB/conftest.tmp
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if grep __.$SUB.__ conftest.tmp >/dev/null 2>/dev/null ; then
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AC_MSG_RESULT([continue configure in default builddir "./$SUB"])
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AC_MSG_ERROR([could not change to default builddir "./$SUB"])
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srcdir=`echo "$SUB" |
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sed -e 's,^\./,,;s,[[^/]]$,&/,;s,[[^/]]*/,../,g;s,[[/]]$,,;'`
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# going to restart from subdirectory location
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test -f $srcdir/config.log && mv $srcdir/config.log .
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test -f $srcdir/confdefs.h && mv $srcdir/confdefs.h .
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test -f $srcdir/conftest.log && mv $srcdir/conftest.log .
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test -f $srcdir/$cache_file && mv $srcdir/$cache_file .
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AC_MSG_RESULT(....exec $SHELL "$srcdir/[$]0" "--srcdir=$srcdir" "--enable-builddir=$SUB" $ac_configure_args)
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case "[$]0" in # restart
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[/\\]*) eval $SHELL "'[$]0'" "'--srcdir=$srcdir'" "'--enable-builddir=$SUB'" $ac_configure_args ;;
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*) eval $SHELL "'$srcdir/[$]0'" "'--srcdir=$srcdir'" "'--enable-builddir=$SUB'" $ac_configure_args ;;
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dnl ac_path_prog uses "set dummy" to override $@ which would defeat the "exec"
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AC_PATH_PROG(SED,gsed sed, sed)
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AS_VAR_POPDEF([SED])dnl
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AS_VAR_POPDEF([SUB])dnl
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AC_CONFIG_COMMANDS([buildir],[dnl .............. config.status ..............
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AS_VAR_PUSHDEF([SUB],[ax_enable_builddir])dnl
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AS_VAR_PUSHDEF([TOP],[top_srcdir])dnl
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AS_VAR_PUSHDEF([SRC],[ac_top_srcdir])dnl
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AS_VAR_PUSHDEF([SED],[ax_enable_builddir_sed])dnl
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pushdef([END],[Makefile.mk])dnl
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SRC="$ax_enable_builddir_srcdir"
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if test ".$SUB" = "." ; then
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if test -f "$TOP/Makefile" ; then
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AC_MSG_NOTICE([skipping TOP/Makefile - left untouched])
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AC_MSG_NOTICE([skipping TOP/Makefile - not created])
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AC_MSG_NOTICE([create TOP/Makefile guessed from local Makefile])
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x='`' ; cat >$tmp/conftemp.sed <<_EOF
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s/^srcdir *=.*/srcdir = ./
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s/^top_srcdir *=.*/top_srcdir = ./
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/^.*[[=]]/!s%\$% ; (cd \$(BUILD) \\&\\& \$(ISNOTSRCDIR) \\&\\& \$(MAKE) "\$\@") || exit ; \$(MAKE) done "RULE=\$\@"%
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test ".$USE_MAINTAINER_MODE" = ".no" || \
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cp "$tmp/conftemp.sed" "$SRC/makefile.sed~" ## DEBUGGING
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echo 'BUILD=`uname -msr | tr " /" "__"`.d' >$SRC/Makefile
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echo 'ISNOTSRCDIR=test ! -f configure' >>$SRC/Makefile
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$SED -f $tmp/conftemp.sed Makefile >>$SRC/Makefile
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echo 'done: ;@ if grep "$(RULE)-done .*:" Makefile > /dev/null; then dnl
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echo $(MAKE) $(RULE)-done ; $(MAKE) $(RULE)-done ; else true ; fi' dnl
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>> $SRC/Makefile
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if test -f "$SRC/m4_ifval([$2],[$2],[END])" ; then
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AC_MSG_NOTICE([extend TOP/Makefile with TOP/m4_ifval([$2],[$2],[END])])
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cat $SRC/END >>$SRC/Makefile
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AC_MSG_NOTICE([make uses BUILD=$SUB (on $ax_enable_builddir_host:)])
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AS_VAR_POPDEF([SED])dnl
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AS_VAR_POPDEF([SRC])dnl
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AS_VAR_POPDEF([TOP])dnl
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AS_VAR_POPDEF([SUB])dnl
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ax_enable_builddir_srcdir="$srcdir" # $srcdir
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ax_enable_builddir_host="$HOST" # $HOST / $host
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ax_enable_builddir_version="$VERSION" # $VERSION
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ax_enable_builddir_package="$PACKAGE" # $PACKAGE
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ax_enable_builddir_sed="$ax_enable_builddir_sed" # $SED
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ax_enable_builddir="$ax_enable_builddir" # $SUB
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<span style="white-space:nowrap;">Copyright © 2008 Guido U. Draheim
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<guidod@gmx.de></span>
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your option)
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <<a href=
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"http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>>.
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As a special exception, the respective Autoconf Macro's copyright owner
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gives unlimited permission to copy, distribute and modify the configure
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scripts that are the output of Autoconf when processing the Macro. You need
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not follow the terms of the GNU General Public License when using or
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distributing such scripts, even though portions of the text of the Macro
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appear in them. The GNU General Public License (GPL) does govern all other
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use of the material that constitutes the Autoconf Macro.
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This special exception to the GPL applies to versions of the Autoconf Macro
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released by the Autoconf Macro Archive. When you make and distribute a
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modified version of the Autoconf Macro, you may extend this special
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exception to the GPL to apply to your modified version as well.
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