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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
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Autoconf Macro: ax_enable_builddir_uname
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<hr>
<h1>
ax_enable_builddir_uname
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AX_ENABLE_BUILDDIR_UNAME [(dirstring-or-command
[,Makefile.mk])]</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
If the current configure was run within the srcdir then we move all
configure-files into a subdir and let the configure steps continue there.
We provide an option --disable-builddir to suppress the move into a
separate builddir.
</p>
<p>
Defaults:
</p>
<pre>
$1 = $build (defaults to `uname -msr`.d)
$2 = Makefile.mk
$3 = -all
</pre>
<p>
This macro must be called before AM_INIT_AUTOMAKE. It creates a default
toplevel srcdir Makefile from the information found in the created toplevel
builddir Makefile. It just copies the variables and rule-targets, each
extended with a default rule-execution that recurses into the build
directory of the current "BUILD". You can override the auto-dection through
`uname -msr | tr " /" "__"`.d at build-time of course, as in
</p>
<pre>
make BUILD=i386-mingw-cross
</pre>
<p>
After the default has been created, additional rules can be appended that
will not just recurse into the subdirectories and only ever exist in the
srcdir toplevel makefile - these parts are read from the $2 = Makefile.mk
file
</p>
<p>
The automatic rules are usually scanning the toplevel Makefile for lines
like '#### $build |$builddir' to recognize the place where to recurse into.
Usually, the last one is the only one used. However, almost all targets
have an additional "*-all" rule which makes the script to recurse into
_all_ variants of the current BUILD (!!) setting. The "-all" suffix can be
overriden for the macro as well.
</p>
<p>
A special rule is only given for things like "dist" that will copy the
tarball from the builddir to the sourcedir (or $(PUB)) for reason of
convenience.
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Guido U. Draheim <guidod@gmx.de>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2007-02-01
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AX_ENABLE_BUILDDIR_UNAME],[
AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
AC_REQUIRE([AX_CONFIGURE_ARGS])[]dnl
AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl
AS_VAR_PUSHDEF([SUB],[ax_enable_builddir])dnl
AS_VAR_PUSHDEF([SED],[ax_enable_builddir_sed])dnl
SUB="."
AC_ARG_ENABLE([builddir], AC_HELP_STRING(
[--disable-builddir],[disable automatic build in subdir of sources])
,[SUB="$enableval"], [SUB="yes"])
if test ".$ac_srcdir_defaulted" != ".no" ; then
if test ".$srcdir" = ".." ; then
if test -f config.status ; then
AC_MSG_NOTICE(toplevel srcdir already configured... skipping subdir build)
else
test ".$SUB" = "." && SUB="."
test ".$SUB" = ".no" && SUB="."
test ".$BUILD" = "." && BUILD=`uname -msr | tr " /" "__"`.d
test ".$SUB" = ".yes" && SUB="m4_ifval([$1], [$1],[$BUILD])"
if test ".$SUB" != ".." ; then # we know where to go and
AS_MKDIR_P([$SUB])
echo __.$SUB.__ > $SUB/conftest.tmp
cd $SUB
if grep __.$SUB.__ conftest.tmp >/dev/null 2>/dev/null ; then
rm conftest.tmp
AC_MSG_RESULT([continue configure in default builddir "./$SUB"])
else
AC_MSG_ERROR([could not change to default builddir "./$SUB"])
fi
srcdir=`echo "$SUB" |
sed -e 's,^\./,,;s,[[^/]]$,&/,;s,[[^/]]*/,../,g;s,[[/]]$,,;'`
# going to restart from subdirectory location
test -f $srcdir/config.log && mv $srcdir/config.log .
test -f $srcdir/confdefs.h && mv $srcdir/confdefs.h .
test -f $srcdir/conftest.log && mv $srcdir/conftest.log .
test -f $srcdir/$cache_file && mv $srcdir/$cache_file .
AC_MSG_RESULT(....exec $SHELL "$srcdir/[$]0" "--srcdir=$srcdir" "--enable-builddir=$SUB" $ac_configure_args)
case "[$]0" in # restart
[/\\]*) eval $SHELL "'[$]0'" "'--srcdir=$srcdir'" "'--enable-builddir=$SUB'" $ac_configure_args ;;
*) eval $SHELL "'$srcdir/[$]0'" "'--srcdir=$srcdir'" "'--enable-builddir=$SUB'" $ac_configure_args ;;
esac ; exit $?
fi
fi
fi fi
dnl ac_path_prog uses "set dummy" to override $@ which would defeat the "exec"
AC_PATH_PROG(SED,gsed sed, sed)
AS_VAR_POPDEF([SED])dnl
AS_VAR_POPDEF([SUB])dnl
AC_CONFIG_COMMANDS([buildir],[dnl .............. config.status ..............
AS_VAR_PUSHDEF([SUB],[ax_enable_builddir])dnl
AS_VAR_PUSHDEF([TOP],[top_srcdir])dnl
AS_VAR_PUSHDEF([SRC],[ac_top_srcdir])dnl
AS_VAR_PUSHDEF([SED],[ax_enable_builddir_sed])dnl
pushdef([END],[Makefile.mk])dnl
SRC="$ax_enable_builddir_srcdir"
if test ".$SUB" = "." ; then
if test -f "$TOP/Makefile" ; then
AC_MSG_NOTICE([skipping TOP/Makefile - left untouched])
else
AC_MSG_NOTICE([skipping TOP/Makefile - not created])
fi
else
AC_MSG_NOTICE([create TOP/Makefile guessed from local Makefile])
x='`' ; cat >$tmp/conftemp.sed <<_EOF
/^\$/n
x
/^\$/bS
x
/\\\\\$/{H;d;}
{H;s/.*//;x;}
bM
:S
x
/\\\\\$/{h;d;}
{h;s/.*//;x;}
:M
s/\\(\\n\\) /\\1 /g
/^ /d
/^[[ ]]*[[\\#]]/d
/^VPATH *=/d
s/^srcdir *=.*/srcdir = ./
s/^top_srcdir *=.*/top_srcdir = ./
/[[:=]]/!d
/^\\./d
s/:.*/:/
/:\$/s/ / /g
/:\$/s/ / /g
/^.*[[=]]/!s%\$% ; (cd \$(BUILD) \\&\\& \$(ISNOTSRCDIR) \\&\\& \$(MAKE) "\$\@") || exit ; \$(MAKE) done "RULE=\$\@"%
_EOF
test ".$USE_MAINTAINER_MODE" = ".no" || \
cp "$tmp/conftemp.sed" "$SRC/makefile.sed~" ## DEBUGGING
echo 'BUILD=`uname -msr | tr " /" "__"`.d' >$SRC/Makefile
echo 'ISNOTSRCDIR=test ! -f configure' >>$SRC/Makefile
$SED -f $tmp/conftemp.sed Makefile >>$SRC/Makefile
echo 'done: ;@ if grep "$(RULE)-done .*:" Makefile > /dev/null; then dnl
echo $(MAKE) $(RULE)-done ; $(MAKE) $(RULE)-done ; else true ; fi' dnl
>> $SRC/Makefile
if test -f "$SRC/m4_ifval([$2],[$2],[END])" ; then
AC_MSG_NOTICE([extend TOP/Makefile with TOP/m4_ifval([$2],[$2],[END])])
cat $SRC/END >>$SRC/Makefile
fi
AC_MSG_NOTICE([make uses BUILD=$SUB (on $ax_enable_builddir_host:)])
fi
popdef([END])dnl
AS_VAR_POPDEF([SED])dnl
AS_VAR_POPDEF([SRC])dnl
AS_VAR_POPDEF([TOP])dnl
AS_VAR_POPDEF([SUB])dnl
],[dnl
ax_enable_builddir_srcdir="$srcdir" # $srcdir
ax_enable_builddir_host="$HOST" # $HOST / $host
ax_enable_builddir_version="$VERSION" # $VERSION
ax_enable_builddir_package="$PACKAGE" # $PACKAGE
ax_enable_builddir_sed="$ax_enable_builddir_sed" # $SED
ax_enable_builddir="$ax_enable_builddir" # $SUB
])dnl
])
</pre>
</div>
<h2>
License
</h2>
<div class="indent">
<span style="white-space:nowrap;">Copyright © 2007 Guido U. Draheim
<guidod@gmx.de></span>
<p>
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.
</p>
<p>
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.
</p>
<p>
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
</p>
<p>
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.
</p>
<p>
This special exception to the GPL applies to versions of the Autoconf Macro
released by the Autoconf Macro 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.
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