1 # ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
3 # Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
4 # Written by Gary V. Vaughan.
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.
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])])
16 # lt_join(SEP, ARG1, [ARG2...])
17 # -----------------------------
18 # Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
19 # associated separator.
22 [0], [m4_fatal([$0: too few arguments: $#])],
26 [[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]),
27 [_$0([$1], _lt_Arg)])],
28 [$0([$1], m4_shiftn(2, $@))])])[]dnl
31 [m4_ifval([$2],[$1][$2])[]dnl
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], [[$1]])
43 [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
45 [m4_dquote(m4_shift($@))])])
46 m4_define([lt_unquote], $1)
49 # lt_append(MACRO-NAME, STRING, [SEPARATOR])
50 # ------------------------------------------
51 # Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
52 # Note that neither SEPARATOR nor STRING are expanded. No SEPARATOR is
53 # output if MACRO-NAME was previously undefined (different than defined
55 # This macro is needed until we can rely on Autoconf 2.62, since earlier
56 # versions of m4 mistakenly expanded SEPARATOR.
57 m4_define([lt_append],
59 m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
63 # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
64 # ----------------------------------------------------------
65 # Produce a SEP delimited list of all paired combinations of elements of
66 # PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
67 # has the form PREFIXmINFIXSUFFIXn.
68 m4_define([lt_combine],
71 [lt_join(m4_quote(m4_default([$1], [[, ]])),
72 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2],
73 [m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]),
74 [_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl
78 # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
79 # -----------------------------------------------------------------------
80 # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
81 # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
82 m4_define([lt_if_append_uniq],
84 [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
85 [lt_append([$1], [$2], [$3])$4],
87 [lt_append([$1], [$2], [$3])$4])])
90 # lt_dict_add(DICT, KEY, VALUE)
91 # -----------------------------
92 m4_define([lt_dict_add],
93 [m4_define([$1($2)], [$4])])
96 # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
97 # --------------------------------------------
98 m4_define([lt_dict_add_subkey],
99 [m4_define([$1($2:$3)], [$4])])
102 # lt_dict_fetch(DICT, KEY, [SUBKEY])
103 # ----------------------------------
104 m4_define([lt_dict_fetch],
106 m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
107 m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
110 # lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
111 # -----------------------------------------------------------------
112 m4_define([lt_if_dict_fetch],
113 [m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
118 # lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
119 # --------------------------------------------------------------
120 m4_define([lt_dict_filter],
122 [lt_join(m4_quote(m4_default([$4], [[, ]])),
123 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
124 [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl