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ltsugar.m4 (4384B)


      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 ])