src/tiff/m4/ltsugar.m4

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