1# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- 2# 3# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc. 4# Written by Gary V. Vaughan, 2004 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 6 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. 20# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier 21# versions in m4sugar had bugs. 22m4_define([lt_join], 23[m4_if([$#], [1], [], 24 [$#], [2], [[$2]], 25 [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])]) 26m4_define([_lt_join], 27[m4_if([$#$2], [2], [], 28 [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])]) 29 30 31# lt_car(LIST) 32# lt_cdr(LIST) 33# ------------ 34# Manipulate m4 lists. 35# These macros are necessary as long as will still need to support 36# Autoconf-2.59 which quotes differently. 37m4_define([lt_car], [[$1]]) 38m4_define([lt_cdr], 39[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], 40 [$#], 1, [], 41 [m4_dquote(m4_shift($@))])]) 42m4_define([lt_unquote], $1) 43 44 45# lt_append(MACRO-NAME, STRING, [SEPARATOR]) 46# ------------------------------------------ 47# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'. 48# Note that neither SEPARATOR nor STRING are expanded; they are appended 49# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked). 50# No SEPARATOR is output if MACRO-NAME was previously undefined (different 51# than defined and empty). 52# 53# This macro is needed until we can rely on Autoconf 2.62, since earlier 54# versions of m4sugar mistakenly expanded SEPARATOR but not STRING. 55m4_define([lt_append], 56[m4_define([$1], 57 m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])]) 58 59 60 61# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) 62# ---------------------------------------------------------- 63# Produce a SEP delimited list of all paired combinations of elements of 64# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list 65# has the form PREFIXmINFIXSUFFIXn. 66# Needed until we can rely on m4_combine added in Autoconf 2.62. 67m4_define([lt_combine], 68[m4_if(m4_eval([$# > 3]), [1], 69 [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl 70[[m4_foreach([_Lt_prefix], [$2], 71 [m4_foreach([_Lt_suffix], 72 ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[, 73 [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])]) 74 75 76# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ]) 77# ----------------------------------------------------------------------- 78# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited 79# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ. 80m4_define([lt_if_append_uniq], 81[m4_ifdef([$1], 82 [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1], 83 [lt_append([$1], [$2], [$3])$4], 84 [$5])], 85 [lt_append([$1], [$2], [$3])$4])]) 86 87 88# lt_dict_add(DICT, KEY, VALUE) 89# ----------------------------- 90m4_define([lt_dict_add], 91[m4_define([$1($2)], [$3])]) 92 93 94# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) 95# -------------------------------------------- 96m4_define([lt_dict_add_subkey], 97[m4_define([$1($2:$3)], [$4])]) 98 99 100# lt_dict_fetch(DICT, KEY, [SUBKEY]) 101# ---------------------------------- 102m4_define([lt_dict_fetch], 103[m4_ifval([$3], 104 m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]), 105 m4_ifdef([$1($2)], [m4_defn([$1($2)])]))]) 106 107 108# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE]) 109# ----------------------------------------------------------------- 110m4_define([lt_if_dict_fetch], 111[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4], 112 [$5], 113 [$6])]) 114 115 116# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...]) 117# -------------------------------------------------------------- 118m4_define([lt_dict_filter], 119[m4_if([$5], [], [], 120 [lt_join(m4_quote(m4_default([$4], [[, ]])), 121 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]), 122 [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl 123]) 124