2004-08-19 Paul Jakma <paul@dishone.st>
* *.m4: import of libtool CVS m4 autoconf files. These only
configure libtool support for languages where configure has
already called AC_PROG_<lang>, less fragile.
* README.txt: doc file for contents of this directory.
diff --git a/m4/ltsugar.m4 b/m4/ltsugar.m4
new file mode 100644
index 0000000..c0f31aa
--- /dev/null
+++ b/m4/ltsugar.m4
@@ -0,0 +1,115 @@
+# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
+#
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan.
+#
+# 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, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# serial 1
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
+
+
+# lt_join(SEP, ARG1, [ARG2...])
+# -----------------------------
+# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
+# associated separator.
+m4_define([lt_join],
+[m4_case([$#],
+ [0], [m4_fatal([$0: too few arguments: $#])],
+ [1], [],
+ [2], [[$2]],
+ [m4_ifval([$2],
+ [m4_ifval([$3],
+ [[$2][$1][]$0([$1], m4_shiftn(2, $@))],
+ [m4_if([$#], [3],
+ [$2],
+ [$0([$1], [$2], m4_shiftn(3, $@))])])],
+ [$0([$1], m4_shiftn(2, $@))])])[]dnl
+])
+
+
+# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
+# ----------------------------------------------------------
+# Produce a SEP delimited list of all paired combinations of elements of
+# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
+# has the form PREFIXmINFIXSUFFIXn.
+m4_define([lt_combine],
+[m4_if([$2], [[]], [],
+ [lt_join(m4_quote(m4_default([$1], [, ])),
+ _$0([$1], m4_car($2)[$3], m4_shiftn(3, $@)),
+ $0([$1], m4_cdr($2), m4_shiftn(2, $@)))])])
+m4_define([_lt_combine],
+[m4_if([$3], [], [],
+ [lt_join(m4_quote(m4_default([$1], [, ])),
+ [$2$3],
+ $0([$1], [$2], m4_shiftn(3, $@)))])[]dnl
+])
+
+
+# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
+# -----------------------------------------------------------------------
+# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
+# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
+m4_define([lt_if_append_uniq],
+[m4_ifdef([$1],
+ [m4_bmatch($3[]m4_defn([$1])$3, $3[]m4_re_escape([$2])$3,
+ [$5],
+ [m4_append([$1], [$2], [$3])$4])],
+ [m4_append([$1], [$2], [$3])$4])])
+
+
+# lt_dict_add(DICT, KEY, VALUE)
+# -----------------------------
+m4_define([lt_dict_add],
+[m4_define([$1($2)], [$4])])
+
+
+# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
+# --------------------------------------------
+m4_define([lt_dict_add_subkey],
+[m4_define([$1($2:$3)], [$4])])
+
+
+# lt_dict_fetch(DICT, KEY, [SUBKEY])
+# ----------------------------------
+m4_define([lt_dict_fetch],
+[m4_ifval([$3],
+ m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
+ m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
+
+
+# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
+# -----------------------------------------------------------------
+m4_define([lt_if_dict_fetch],
+[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
+ [$5],
+ [$6])])
+
+
+# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
+# ------------------------------------------------------------
+m4_define([lt_dict_filter],
+[m4_if([$5], [], [],
+ [lt_join(m4_quote(m4_default([$4], [[, ]])),
+ m4_quote(lt_if_dict_fetch([$1], [$5], [$2], [$3], [$5])),
+ m4_quote($0([$1], [$2], [$3], [$4], m4_shiftn(5, $@))))])dnl
+])