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109 lines
4.5 KiB
Plaintext
Executable File
109 lines
4.5 KiB
Plaintext
Executable File
# ===========================================================================
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# https://www.gnu.org/software/autoconf-archive/ax_define_sub_path.html
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# ===========================================================================
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#
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# OBSOLETE MACRO
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#
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# This macro is obsolete because its been completely broken for several
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# years without anybody noticing, so apparently it's not used very much.
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#
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# SYNOPSIS
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#
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# AX_DEFINE_SUB_PATH(DEFNAME, varname, description)
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#
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# DESCRIPTION
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#
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# Look at varname and detect the subpath that it contains relative to
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# $prefix/$exec_prefix. If the path is indeed relative to
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# $prefix/$exec_prefix, then a single "./" (dotslash) is prepended,
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# otherwise it can be seen as an absolute path that cannot be moved, which
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# you possibly do for "/etc" files, or even those ending up in
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# "/lib/modules" or "/winnt/system".
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#
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# This macro is not very intelligent, it's just a first try in this
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# direction. It does currently just look into the current patterns, and
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# replaces a ${prefix} with a simple dot. Amazingly, it works quite well
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# for most packages.
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#
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# Example (configure.ac):
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#
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# AX_DEFINE_DIR([EPREFIX], [exec_prefix], [--exec-prefix or default])
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# AX_DEFINE_SUB_PATH([PATH_LIBDIR], [libdir], [--bindir subdir])
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# AC_DEFINE_UNQUOTED([PACKAGE],"$PACKAGE", [Name of package])
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#
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# Example (in C):
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#
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# static const char _libdir[] = PATH_LIBDIR; /* configure default */
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# char* libdir;
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# char* eprefix = getenv (PACKAGE "DIR");
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# if (! eprefix) eprefix = EPREFIX; /* default */
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# if (*_libdir != '.') libdir = strdup(_libdir);
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# else {
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# libdir = malloc(strlen(eprefix) + strlen(_libdir) + 2);
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# strcpy(libdir, eprefix);
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# strcat(libdir, PATH_DELIMITER_STRING);
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# strcat(libdir, _libdir);
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# }
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# ...
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# free (libdir);
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#
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# The AX_DEFINE_SUB_PATHS(varnames) macro looks for the given various
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# install-paths that largely depend on either ${prefix} or ${exec_prefix}.
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# Just cut out the prefix and ac_define the value. The value is uppercased
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# and PATH_ prepended ie. ax_define_sub_paths(bindir libdir pkgdatadir)
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# will create the defines PATH_BINDIR PATH_LIBDIR PATH_PKGDATADIR - see
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# posix' include/paths.h that creates _PATH_DEV and friends.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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#
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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
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# Free Software Foundation; either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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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 <https://www.gnu.org/licenses/>.
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#
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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
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf 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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#serial 11
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AU_ALIAS([AC_DEFINE_SUB_PATH], [AX_DEFINE_SUB_PATH])
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AC_DEFUN([AX_DEFINE_SUB_PATH],
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[dnl
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test "_$prefix" = _NONE && prefix="$ac_default_prefix"
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test "_$exec_prefix" = _NONE && exec_prefix='${prefix}'
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P=`echo ifelse( $2, , [$]$1, [$]$2) | sed -e 's:^\${[a-z_]*prefix}:.:'`
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ifelse($3, ,
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AC_DEFINE($1, $P, [sub path $2]),
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AC_DEFINE($1, $P, $3))
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])
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AC_DEFUN([AX_DEFINE_SUB_PATHS],
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[dnl
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test "_$prefix" = _NONE && prefix="$ac_default_prefix"
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test "_$exec_prefix" = _NONE && exec_prefix='${prefix}'
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for i in $1 ; do
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P=`echo \$$i | sed -e 's:^\${[a-z_]*prefix}:.:'`
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V=`echo path_$i | sed -e 'y:abcdefghijklmnopqrstuvwxyz:ABCDEFGHIJKLMNOPQRSTUVWXYZ:'`
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AC_DEFINE($V, $P, [sub path $i]),
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])
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