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Annotation of embedaddon/libnet/m4/ltsugar.m4, revision 1.1

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