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# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
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#
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# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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# Written by Gary V. Vaughan.
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#
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# This file is free software; the Free Software Foundation gives
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# unlimited permission to copy and/or distribute it, with or without
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# modifications, as long as this notice is preserved.
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# serial 3 ltsugar.m4
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# This is to help aclocal find these macros, as it can't see m4_define.
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AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
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# lt_join(SEP, ARG1, [ARG2...])
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# -----------------------------
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# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
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# associated separator.
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m4_define([lt_join],
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[m4_case([$#],
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[0], [m4_fatal([$0: too few arguments: $#])],
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[1], [],
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[2], [[$2]],
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[m4_ifval([$2],
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[[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]),
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[_$0([$1], _lt_Arg)])],
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[$0([$1], m4_shiftn(2, $@))])])[]dnl
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])
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m4_define([_lt_join],
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[m4_ifval([$2],[$1][$2])[]dnl
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])
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# lt_car(LIST)
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# lt_cdr(LIST)
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# ------------
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# Manipulate m4 lists.
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# These macros are necessary as long as will still need to support
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# Autoconf-2.59 which quotes differently.
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m4_define([lt_car], [[$1]])
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m4_define([lt_cdr],
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[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
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[$#], 1, [],
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[m4_dquote(m4_shift($@))])])
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m4_define([lt_unquote], $1)
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# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
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# ----------------------------------------------------------
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# Produce a SEP delimited list of all paired combinations of elements of
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# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
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# has the form PREFIXmINFIXSUFFIXn.
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m4_define([lt_combine],
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[m4_if([$2], [], [],
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[m4_if([$4], [], [],
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[lt_join(m4_quote(m4_default([$1], [[, ]])),
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lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2],
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[m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]),
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[_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl
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])
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# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
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# -----------------------------------------------------------------------
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# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
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# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
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m4_define([lt_if_append_uniq],
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[m4_ifdef([$1],
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[m4_bmatch($3[]m4_defn([$1])$3, $3[]m4_re_escape([$2])$3,
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[$5],
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[m4_append([$1], [$2], [$3])$4])],
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[m4_append([$1], [$2], [$3])$4])])
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# lt_dict_add(DICT, KEY, VALUE)
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# -----------------------------
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m4_define([lt_dict_add],
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[m4_define([$1($2)], [$4])])
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# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
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# --------------------------------------------
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m4_define([lt_dict_add_subkey],
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[m4_define([$1($2:$3)], [$4])])
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# lt_dict_fetch(DICT, KEY, [SUBKEY])
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# ----------------------------------
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m4_define([lt_dict_fetch],
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[m4_ifval([$3],
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m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
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m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
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# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
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# -----------------------------------------------------------------
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m4_define([lt_if_dict_fetch],
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[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
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[$5],
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[$6])])
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# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
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# --------------------------------------------------------------
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m4_define([lt_dict_filter],
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[m4_if([$5], [], [],
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[lt_join(m4_quote(m4_default([$4], [[, ]])),
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lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
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[lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
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])
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