1# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- 2# 3# Copyright (C) 2004-2005, 2007-2008, 2011-2018 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. 14AC_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. 23m4_define([lt_join], 24[m4_if([$#], [1], [], 25 [$#], [2], [[$2]], 26 [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])]) 27m4_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. 38m4_define([lt_car], [[$1]]) 39m4_define([lt_cdr], 40[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], 41 [$#], 1, [], 42 [m4_dquote(m4_shift($@))])]) 43m4_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. 56m4_define([lt_append], 57[m4_define([$1], 58 m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])]) 59 60 61 62# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) 63# ---------------------------------------------------------- 64# Produce a SEP delimited list of all paired combinations of elements of 65# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list 66# has the form PREFIXmINFIXSUFFIXn. 67# Needed until we can rely on m4_combine added in Autoconf 2.62. 68m4_define([lt_combine], 69[m4_if(m4_eval([$# > 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. 81m4_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# ----------------------------- 91m4_define([lt_dict_add], 92[m4_define([$1($2)], [$3])]) 93 94 95# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) 96# -------------------------------------------- 97m4_define([lt_dict_add_subkey], 98[m4_define([$1($2:$3)], [$4])]) 99 100 101# lt_dict_fetch(DICT, KEY, [SUBKEY]) 102# ---------------------------------- 103m4_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# ----------------------------------------------------------------- 111m4_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# -------------------------------------------------------------- 119m4_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]) 125