| 1 | # ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
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| 2 | #
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| 3 | # Copyright (C) 2004-2005, 2007-2008, 2011-2015 Free Software
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| 4 | # Foundation, Inc.
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| 5 | # Written by Gary V. Vaughan, 2004
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| 6 | #
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| 7 | # This file is free software; the Free Software Foundation gives
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| 8 | # unlimited permission to copy and/or distribute it, with or without
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| 9 | # modifications, as long as this notice is preserved.
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| 10 |
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| 11 | # serial 6 ltsugar.m4
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| 12 |
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| 13 | # This is to help aclocal find these macros, as it can't see m4_define.
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| 14 | AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
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| 15 |
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| 16 |
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| 17 | # lt_join(SEP, ARG1, [ARG2...])
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| 18 | # -----------------------------
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| 19 | # Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
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| 20 | # associated separator.
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| 21 | # Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
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| 22 | # versions in m4sugar had bugs.
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| 23 | m4_define([lt_join],
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| 24 | [m4_if([$#], [1], [],
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| 25 | [$#], [2], [[$2]],
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| 26 | [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
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| 27 | m4_define([_lt_join],
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| 28 | [m4_if([$#$2], [2], [],
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| 29 | [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
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| 30 |
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| 31 |
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| 32 | # lt_car(LIST)
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| 33 | # lt_cdr(LIST)
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| 34 | # ------------
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| 35 | # Manipulate m4 lists.
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| 36 | # These macros are necessary as long as will still need to support
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| 37 | # Autoconf-2.59, which quotes differently.
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| 38 | m4_define([lt_car], [[$1]])
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| 39 | m4_define([lt_cdr],
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| 40 | [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
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| 41 | [$#], 1, [],
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| 42 | [m4_dquote(m4_shift($@))])])
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| 43 | m4_define([lt_unquote], $1)
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| 44 |
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| 45 |
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| 46 | # lt_append(MACRO-NAME, STRING, [SEPARATOR])
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| 47 | # ------------------------------------------
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| 48 | # Redefine MACRO-NAME to hold its former content plus 'SEPARATOR''STRING'.
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| 49 | # Note that neither SEPARATOR nor STRING are expanded; they are appended
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| 50 | # to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
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| 51 | # No SEPARATOR is output if MACRO-NAME was previously undefined (different
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| 52 | # than defined and empty).
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| 53 | #
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| 54 | # This macro is needed until we can rely on Autoconf 2.62, since earlier
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| 55 | # versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
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| 56 | m4_define([lt_append],
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| 57 | [m4_define([$1],
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| 58 | m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
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| 59 |
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| 60 |
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| 61 |
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| 62 | # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
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| 63 | # ----------------------------------------------------------
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| 64 | # Produce a SEP delimited list of all paired combinations of elements of
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| 65 | # PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
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| 66 | # has the form PREFIXmINFIXSUFFIXn.
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| 67 | # Needed until we can rely on m4_combine added in Autoconf 2.62.
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| 68 | m4_define([lt_combine],
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| 69 | [m4_if(m4_eval([$# > 3]), [1],
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| 70 | [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
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| 71 | [[m4_foreach([_Lt_prefix], [$2],
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| 72 | [m4_foreach([_Lt_suffix],
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| 73 | ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
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| 74 | [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
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| 75 |
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| 76 |
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| 77 | # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
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| 78 | # -----------------------------------------------------------------------
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| 79 | # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
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| 80 | # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
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| 81 | m4_define([lt_if_append_uniq],
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| 82 | [m4_ifdef([$1],
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| 83 | [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
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| 84 | [lt_append([$1], [$2], [$3])$4],
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| 85 | [$5])],
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| 86 | [lt_append([$1], [$2], [$3])$4])])
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| 87 |
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| 88 |
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| 89 | # lt_dict_add(DICT, KEY, VALUE)
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| 90 | # -----------------------------
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| 91 | m4_define([lt_dict_add],
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| 92 | [m4_define([$1($2)], [$3])])
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| 93 |
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| 94 |
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| 95 | # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
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| 96 | # --------------------------------------------
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| 97 | m4_define([lt_dict_add_subkey],
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| 98 | [m4_define([$1($2:$3)], [$4])])
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| 99 |
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| 100 |
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| 101 | # lt_dict_fetch(DICT, KEY, [SUBKEY])
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| 102 | # ----------------------------------
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| 103 | m4_define([lt_dict_fetch],
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| 104 | [m4_ifval([$3],
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| 105 | m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
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| 106 | m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
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| 107 |
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| 108 |
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| 109 | # lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
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| 110 | # -----------------------------------------------------------------
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| 111 | m4_define([lt_if_dict_fetch],
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| 112 | [m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
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| 113 | [$5],
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| 114 | [$6])])
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| 115 |
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| 116 |
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| 117 | # lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
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| 118 | # --------------------------------------------------------------
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| 119 | m4_define([lt_dict_filter],
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| 120 | [m4_if([$5], [], [],
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| 121 | [lt_join(m4_quote(m4_default([$4], [[, ]])),
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| 122 | lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
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| 123 | [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
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| 124 | ])
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