X-Git-Url: https://git.distorted.org.uk/~mdw/runlisp/blobdiff_plain/fb2149fc2dc1d5f4936b2af31be7c7bd02f83324..d663db3ac19da1c2cd49406d53761edac2813114:/m4/mdw-dir-texmf.m4

diff --git a/m4/mdw-dir-texmf.m4 b/m4/mdw-dir-texmf.m4
index 6e1c0ee..1d9f60a 100644
--- a/m4/mdw-dir-texmf.m4
+++ b/m4/mdw-dir-texmf.m4
@@ -1,30 +1,72 @@
 dnl -*-autoconf-*-
 
-dnl --- *@-mdw_DIR_TEXMF-@* ---
-dnl
-dnl Author:     Mark Wooding
-dnl
-dnl Synopsis:   mdw_DIR_TEXMF
-dnl
-dnl Arguments:  ---
-dnl
-dnl Use:        Sets the substitution `texmfdir' as a sensible TeX install
-dnl             tree.
+### SYNOPSIS
+###
+###   mdw_DIR_TEXMF
+###
+### DESCRIPTION
+###
+###   Define the substitution `@texmfdir@' to name a sensible TeX
+###   installation root directory.
+###
+###   A `--with-texmfdir' command-line option is defined, which allows the
+###   end user to select a specific installation root.  The default is chosen
+###   according to a heuristic, which is currently to use the first of
+###
+###     * `DATADIR/texmf',
+###     * `PREFIX/lib/texmf',
+###     * `PREFIX/texmf',
+###     * `LIBDIR/lib/texmf'.
+###
+### LICENSE
+###
+###   Copyright (c) 2002 Mark Wooding <mdw@distorted.org.uk>
+###
+###   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([mdw_DIR_TEXMF], [
-AC_ARG_WITH([texmfdir],
-[  --with-texmfdir=DIR     set the TeX install directory to DIR],
-[texmfdir=$withval],
-[AC_MSG_CHECKING([where to put installed TeX files])
-mdw_DEFINE_PATHS([
-texmfdir='${datadir}/texmf'
-for d in \
-  '${datadir}/texmf' '${prefix}/lib/texmf' \
-  '${prefix}/texmf' '${libdir}/lib/texmf'; do
-  if test -d "mdw_PATH([$d])"; then
-    texmfdir=$d
-    break
-  fi
-done
-AC_MSG_RESULT([$texmfdir])])])
+# serial 1
+AC_DEFUN([mdw_DIR_TEXMF],
+[AC_ARG_WITH([texmfdir],
+	     [AS_HELP_STRING([--with-texmfdir=DIR],
+			     [set the TeX install directory to DIR])],
+	     [texmfdir=$withval],
+	     [texmfdir=guess])
+case $texmfdir in
+  guess)
+    AC_MSG_CHECKING([where to put installed TeX files])
+    mdw_DEFINE_PATHS([
+      texmfdir='${datadir}/texmf'
+      for d in \
+	'${datadir}/texmf' '${prefix}/lib/texmf' \
+	'${prefix}/texmf' '${libdir}/lib/texmf'
+      do
+	if test -d "mdw_PATH([$d])"; then texmfdir=$d; break; fi
+      done])
+    AC_MSG_RESULT([$texmfdir])
+    ;;
+esac
 AC_SUBST(texmfdir)])