ltsugar.m4 revision 214634 
1168515Sgshapiro# ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
2168515Sgshapiro#
3168515Sgshapiro# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
4132943Sgshapiro# Written by Gary V. Vaughan.
5266692Sgshapiro#
6132943Sgshapiro# This file is free software; the Free Software Foundation gives
7168515Sgshapiro# unlimited permission to copy and/or distribute it, with or without
8132943Sgshapiro# modifications, as long as this notice is preserved.
9168515Sgshapiro
10132943Sgshapiro# serial 3 ltsugar.m4
11168515Sgshapiro
12168515Sgshapiro# This is to help aclocal find these macros, as it can't see m4_define.
13132943SgshapiroAC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
14132943Sgshapiro
15168515Sgshapiro
16157001Sgshapiro# lt_join(SEP, ARG1, [ARG2...])
17157001Sgshapiro# -----------------------------
18168515Sgshapiro# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
19132943Sgshapiro# associated separator.
20132943Sgshapirom4_define([lt_join],
21168515Sgshapiro[m4_case([$#],
22168515Sgshapiro	 [0], [m4_fatal([$0: too few arguments: $#])],
23168515Sgshapiro	 [1], [],
24168515Sgshapiro	 [2], [[$2]],
25168515Sgshapiro	 [m4_ifval([$2],
26168515Sgshapiro	 	   [[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]),
27168515Sgshapiro	                   [_$0([$1], _lt_Arg)])],
28168515Sgshapiro		   [$0([$1], m4_shiftn(2, $@))])])[]dnl
29168515Sgshapiro])
30168515Sgshapirom4_define([_lt_join],
31157001Sgshapiro[m4_ifval([$2],[$1][$2])[]dnl
32157001Sgshapiro])
33157001Sgshapiro
34168515Sgshapiro
35132943Sgshapiro# lt_car(LIST)
36168515Sgshapiro# lt_cdr(LIST)
37168515Sgshapiro# ------------
38168515Sgshapiro# Manipulate m4 lists.
39132943Sgshapiro# These macros are necessary as long as will still need to support
40132943Sgshapiro# Autoconf-2.59 which quotes differently.
41168515Sgshapirom4_define([lt_car], [[$1]])
42168515Sgshapirom4_define([lt_cdr],
43168515Sgshapiro[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
44168515Sgshapiro       [$#], 1, [],
45223067Sgshapiro       [m4_dquote(m4_shift($@))])])
46168515Sgshapirom4_define([lt_unquote], $1)
47168515Sgshapiro
48168515Sgshapiro
49132943Sgshapiro# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
50132943Sgshapiro# ----------------------------------------------------------
51168515Sgshapiro# Produce a SEP delimited list of all paired combinations of elements of
52168515Sgshapiro# PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
53132943Sgshapiro# has the form PREFIXmINFIXSUFFIXn.
54168515Sgshapirom4_define([lt_combine],
55168515Sgshapiro[m4_if([$2], [], [],
56168515Sgshapiro  [m4_if([$4], [], [],
57168515Sgshapiro    [lt_join(m4_quote(m4_default([$1], [[, ]])),
58168515Sgshapiro      lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2],
59168515Sgshapiro       		   [m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]),
60168515Sgshapiro		   	       [_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl
61168515Sgshapiro])
62132943Sgshapiro
63168515Sgshapiro
64132943Sgshapiro# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
65168515Sgshapiro# -----------------------------------------------------------------------
66168515Sgshapiro# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
67261363Sgshapiro# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
68132943Sgshapirom4_define([lt_if_append_uniq],
69168515Sgshapiro[m4_ifdef([$1],
70132943Sgshapiro	[m4_bmatch($3[]m4_defn([$1])$3, $3[]m4_re_escape([$2])$3,
71132943Sgshapiro		[$5],
72168515Sgshapiro	    [m4_append([$1], [$2], [$3])$4])],
73168515Sgshapiro    [m4_append([$1], [$2], [$3])$4])])
74168515Sgshapiro
75
76# lt_dict_add(DICT, KEY, VALUE)
77# -----------------------------
78m4_define([lt_dict_add],
79[m4_define([$1($2)], [$4])])
80
81
82# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
83# --------------------------------------------
84m4_define([lt_dict_add_subkey],
85[m4_define([$1($2:$3)], [$4])])
86
87
88# lt_dict_fetch(DICT, KEY, [SUBKEY])
89# ----------------------------------
90m4_define([lt_dict_fetch],
91[m4_ifval([$3],
92	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
93    m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
94
95
96# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
97# -----------------------------------------------------------------
98m4_define([lt_if_dict_fetch],
99[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
100	[$5],
101    [$6])])
102
103
104# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
105# --------------------------------------------------------------
106m4_define([lt_dict_filter],
107[m4_if([$5], [], [],
108  [lt_join(m4_quote(m4_default([$4], [[, ]])),
109           lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
110		      [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
111])
112