1# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- 2# 3# Copyright (C) 2004, 2005, 2007 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 4 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_append(MACRO-NAME, STRING, [SEPARATOR]) 50# ------------------------------------------ 51# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'. 52# Note that neither SEPARATOR nor STRING are expanded. No SEPARATOR is 53# output if MACRO-NAME was previously undefined (different than defined 54# and empty). 55# This macro is needed until we can rely on Autoconf 2.62, since earlier 56# versions of m4 mistakenly expanded SEPARATOR. 57m4_define([lt_append], 58[m4_define([$1], 59 m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])]) 60 61 62 63# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) 64# ---------------------------------------------------------- 65# Produce a SEP delimited list of all paired combinations of elements of 66# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list 67# has the form PREFIXmINFIXSUFFIXn. 68m4_define([lt_combine], 69[m4_if([$2], [], [], 70 [m4_if([$4], [], [], 71 [lt_join(m4_quote(m4_default([$1], [[, ]])), 72 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2], 73 [m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]), 74 [_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl 75]) 76 77 78# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ]) 79# ----------------------------------------------------------------------- 80# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited 81# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ. 82m4_define([lt_if_append_uniq], 83[m4_ifdef([$1], 84 [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1], 85 [lt_append([$1], [$2], [$3])$4], 86 [$5])], 87 [lt_append([$1], [$2], [$3])$4])]) 88 89 90# lt_dict_add(DICT, KEY, VALUE) 91# ----------------------------- 92m4_define([lt_dict_add], 93[m4_define([$1($2)], [$4])]) 94 95 96# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) 97# -------------------------------------------- 98m4_define([lt_dict_add_subkey], 99[m4_define([$1($2:$3)], [$4])]) 100 101 102# lt_dict_fetch(DICT, KEY, [SUBKEY]) 103# ---------------------------------- 104m4_define([lt_dict_fetch], 105[m4_ifval([$3], 106 m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]), 107 m4_ifdef([$1($2)], [m4_defn([$1($2)])]))]) 108 109 110# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE]) 111# ----------------------------------------------------------------- 112m4_define([lt_if_dict_fetch], 113[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4], 114 [$5], 115 [$6])]) 116 117 118# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...]) 119# -------------------------------------------------------------- 120m4_define([lt_dict_filter], 121[m4_if([$5], [], [], 122 [lt_join(m4_quote(m4_default([$4], [[, ]])), 123 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]), 124 [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl 125]) 126