1 # ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- 2 # 3 # Copyright (C) 2004-2005, 2007-2008, 2011-2015 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. 14 AC_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. 23 m4_define([lt_join], 24 [m4_if([$#], [1], [], 25 [$#], [2], [[$2]], 26 [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])]) 27 m4_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. 38 m4_define([lt_car], [[$1]]) 39 m4_define([lt_cdr], 40 [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], 41 [$#], 1, [], 42 [m4_dquote(m4_shift($@))])]) 43 m4_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. 56 m4_define([lt_append], 57 [m4_define([$1], 58 m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])]) 59 60 61 62 # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) 63 # ---------------------------------------------------------- 64 # Produce a SEP delimited list of all paired combinations of elements of 65 # PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list 66 # has the form PREFIXmINFIXSUFFIXn. 67 # Needed until we can rely on m4_combine added in Autoconf 2.62. 68 m4_define([lt_combine], 69 [m4_if(m4_eval([$# > 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. 81 m4_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 # ----------------------------- 91 m4_define([lt_dict_add], 92 [m4_define([$1($2)], [$3])]) 93 94 95 # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) 96 # -------------------------------------------- 97 m4_define([lt_dict_add_subkey], 98 [m4_define([$1($2:$3)], [$4])]) 99 100 101 # lt_dict_fetch(DICT, KEY, [SUBKEY]) 102 # ---------------------------------- 103 m4_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 # ----------------------------------------------------------------- 111 m4_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 # -------------------------------------------------------------- 119 m4_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
