Rename AC_ prefixes to AX_ (only in names of aa macros!).

1 files changed, 100 insertions, 0 deletions

diff --git a/m4/ax_define_sub_path.m4 b/m4/ax_define_sub_path.m4
new file mode 100644
index 0000000..2546d9d
--- /dev/null
+++ b/m4/ax_define_sub_path.m4
@@ -0,0 +1,100 @@
+# ===========================================================================
+#       http://www.nongnu.org/autoconf-archive/ax_define_sub_path.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_DEFINE_SUB_PATH(DEFNAME, varname, description)
+#
+# DESCRIPTION
+#
+#   Look at varname and detect the subpath that it contains relative to
+#   $prefix/$exec_prefix. If the path is indeed relative to
+#   $prefix/$exec_prefix, then a single "./" (dotslash) is prepended,
+#   otherwise it can be seen as an absolute path that can not be moved,
+#   which you possibly do for "/etc" files, or even those ending up in
+#   "/lib/modules" or "/winnt/system".
+#
+#   This macro is not very intelligent, it's just a first try in this
+#   direction. It does currently just look into the current patterns, and
+#   replaces a ${prefix} with a simple dot. Amazingly, it works quite well
+#   for most packages.
+#
+#   Example (configure.ac):
+#
+#      AC_DEFINE_DIR([EPREFIX], [exec_prefix], [--exec-prefix or default])
+#      AX_DEFINE_SUB_PATH([PATH_LIBDIR], [libdir], [--bindir subdir])
+#      AC_DEFINE_UNQUOTED([PACKAGE],"$PACKAGE", [Name of package])
+#
+#   Example (in C):
+#
+#      static const char _libdir[] = PATH_LIBDIR; /* configure default */
+#      char* libdir;
+#      char* eprefix = getenv (PACKAGE "DIR");
+#      if (! eprefix) eprefix = EPREFIX; /* default */
+#      if (*_libdir != '.') libdir = strdup(_libdir);
+#      else {
+#         libdir = malloc(strlen(eprefix) + strlen(_libdir) + 2);
+#         strcpy(libdir, eprefix);
+#         strcat(libdir, PATH_DELIMITER_STRING);
+#         strcat(libdir, _libdir);
+#      }
+#      ...
+#      free (libdir);
+#
+#   The AX_DEFINE_SUB_PATHS(varnames) macro looks for the given various
+#   install-paths that largely depend on either ${prefix} or ${exec_prefix}.
+#   Just cut out the prefix and ac_define the value. The value is uppercased
+#   and PATH_ prepended ie. ax_define_sub_paths(bindir libdir pkgdatadir)
+#   will create the defines PATH_BINDIR PATH_LIBDIR PATH_PKGDATADIR - see
+#   posix' include/paths.h that creates _PATH_DEV and friends.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 2 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+AC_DEFUN([AX_DEFINE_SUB_PATH],
+[dnl
+  test "_$prefix" = _NONE && prefix="$ac_default_prefix"
+  test "_$exec_prefix" = _NONE && exec_prefix='${prefix}'
+  P=`echo ifelse( $2, , [$]$1, [$]$2) | sed -e 's:^\${[a-z_]*prefix}:.:'`
+  ifelse ($3, ,
+    AC_DEFINE($1, $P, [sub path $2]),
+    AC_DEFINE($1, $P, $3))
+])
+
+AC_DEFUN([AX_DEFINE_SUB_PATHS],
+[dnl
+  test "_$prefix" = _NONE && prefix="$ac_default_prefix"
+  test "_$exec_prefix" = _NONE && exec_prefix='${prefix}'
+  for i in $1 ; do
+  P=`echo \$$i | sed -e 's:^\${[a-z_]*prefix}:.:'`
+  V=`echo path_$i | sed -e 'y:abcdefghijklmnopqrstuvwxyz:ABCDEFGHIJKLMNOPQRSTUVWXYZ:'`
+    AC_DEFINE($V, $P, [sub path $i]),
+])