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* ltmain.sh: Update from ToT Libtool.
[pf3gnuchains/gcc-fork.git] / ltsugar.m4
1 # ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
2 #
3 # Copyright (C) 2004, 2005 Free Software Foundation, Inc.
4 # Written by Gary V. Vaughan.
5 #
6 # This file is free software; the Free Software Foundation gives
7 # unlimited permission to copy and/or distribute it, with or without
8 # modifications, as long as this notice is preserved.
9
10 # serial 3 ltsugar.m4
11
12 # This is to help aclocal find these macros, as it can't see m4_define.
13 AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
14
15
16 # lt_join(SEP, ARG1, [ARG2...])
17 # -----------------------------
18 # Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
19 # associated separator.
20 m4_define([lt_join],
21 [m4_case([$#],
22          [0], [m4_fatal([$0: too few arguments: $#])],
23          [1], [],
24          [2], [[$2]],
25          [m4_ifval([$2],
26                    [[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]),
27                            [_$0([$1], _lt_Arg)])],
28                    [$0([$1], m4_shiftn(2, $@))])])[]dnl
29 ])
30 m4_define([_lt_join],
31 [m4_ifval([$2],[$1][$2])[]dnl
32 ])
33
34
35 # lt_car(LIST)
36 # lt_cdr(LIST)
37 # ------------
38 # Manipulate m4 lists.
39 # These macros are necessary as long as will still need to support
40 # Autoconf-2.59 which quotes differently.
41 m4_define([lt_car], [[$1]])
42 m4_define([lt_cdr],
43 [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
44        [$#], 1, [],
45        [m4_dquote(m4_shift($@))])])
46 m4_define([lt_unquote], $1)
47
48
49 # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
50 # ----------------------------------------------------------
51 # Produce a SEP delimited list of all paired combinations of elements of
52 # PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
53 # has the form PREFIXmINFIXSUFFIXn.
54 m4_define([lt_combine],
55 [m4_if([$2], [], [],
56   [m4_if([$4], [], [],
57     [lt_join(m4_quote(m4_default([$1], [[, ]])),
58       lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2],
59                    [m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]),
60                                [_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl
61 ])
62
63
64 # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
65 # -----------------------------------------------------------------------
66 # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
67 # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
68 m4_define([lt_if_append_uniq],
69 [m4_ifdef([$1],
70         [m4_bmatch($3[]m4_defn([$1])$3, $3[]m4_re_escape([$2])$3,
71                 [$5],
72             [m4_append([$1], [$2], [$3])$4])],
73     [m4_append([$1], [$2], [$3])$4])])
74
75
76 # lt_dict_add(DICT, KEY, VALUE)
77 # -----------------------------
78 m4_define([lt_dict_add],
79 [m4_define([$1($2)], [$4])])
80
81
82 # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
83 # --------------------------------------------
84 m4_define([lt_dict_add_subkey],
85 [m4_define([$1($2:$3)], [$4])])
86
87
88 # lt_dict_fetch(DICT, KEY, [SUBKEY])
89 # ----------------------------------
90 m4_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 # -----------------------------------------------------------------
98 m4_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 # --------------------------------------------------------------
106 m4_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 ])