ltsugar.m4 revision 214571
1# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- 2# 3# Copyright (C) 2004, 2005 Free Software Foundation, Inc. 4# Written by Gary V. Vaughan. 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 3 ltsugar.m4 11 12# This is to help aclocal find these macros, as it can't see m4_define. 13AC_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. 20m4_define([lt_join], 21[m4_case([$#], 22 [0], [m4_fatal([$0: too few arguments: $#])], 23 [1], [], 24 [2], [[$2]], 25 [m4_ifval([$2], 26 [[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]), 27 [_$0([$1], _lt_Arg)])], 28 [$0([$1], m4_shiftn(2, $@))])])[]dnl 29]) 30m4_define([_lt_join], 31[m4_ifval([$2],[$1][$2])[]dnl 32]) 33 34 35# lt_car(LIST) 36# lt_cdr(LIST) 37# ------------ 38# Manipulate m4 lists. 39# These macros are necessary as long as will still need to support 40# Autoconf-2.59 which quotes differently. 41m4_define([lt_car], [[$1]]) 42m4_define([lt_cdr], 43[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], 44 [$#], 1, [], 45 [m4_dquote(m4_shift($@))])]) 46m4_define([lt_unquote], $1) 47 48 49# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) 50# ---------------------------------------------------------- 51# Produce a SEP delimited list of all paired combinations of elements of 52# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list 53# has the form PREFIXmINFIXSUFFIXn. 54m4_define([lt_combine], 55[m4_if([$2], [], [], 56 [m4_if([$4], [], [], 57 [lt_join(m4_quote(m4_default([$1], [[, ]])), 58 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2], 59 [m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]), 60 [_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl 61]) 62 63 64# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ]) 65# ----------------------------------------------------------------------- 66# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited 67# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ. 68m4_define([lt_if_append_uniq], 69[m4_ifdef([$1], 70 [m4_bmatch($3[]m4_defn([$1])$3, $3[]m4_re_escape([$2])$3, 71 [$5], 72 [m4_append([$1], [$2], [$3])$4])], 73 [m4_append([$1], [$2], [$3])$4])]) 74 75 76# lt_dict_add(DICT, KEY, VALUE) 77# ----------------------------- 78m4_define([lt_dict_add], 79[m4_define([$1($2)], [$4])]) 80 81 82# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) 83# -------------------------------------------- 84m4_define([lt_dict_add_subkey], 85[m4_define([$1($2:$3)], [$4])]) 86 87 88# lt_dict_fetch(DICT, KEY, [SUBKEY]) 89# ---------------------------------- 90m4_define([lt_dict_fetch], 91[m4_ifval([$3], 92 m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]), 93 m4_ifdef([$1($2)], [m4_defn([$1($2)])]))]) 94 95 96# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE]) 97# ----------------------------------------------------------------- 98m4_define([lt_if_dict_fetch], 99[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4], 100 [$5], 101 [$6])]) 102 103 104# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...]) 105# -------------------------------------------------------------- 106m4_define([lt_dict_filter], 107[m4_if([$5], [], [], 108 [lt_join(m4_quote(m4_default([$4], [[, ]])), 109 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]), 110 [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl 111]) 112