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. 13 AC_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. 22 m4_define([lt_join], 23 [m4_if([$#], [1], [], 24 [$#], [2], [[$2]], 25 [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])]) 26 m4_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. 37 m4_define([lt_car], [[$1]]) 38 m4_define([lt_cdr], 39 [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], 40 [$#], 1, [], 41 [m4_dquote(m4_shift($@))])]) 42 m4_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. 55 m4_define([lt_append], 56 [m4_define([$1], 57 m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])]) 58 59 60 61 # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) 62 # ---------------------------------------------------------- 63 # Produce a SEP delimited list of all paired combinations of elements of 64 # PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list 65 # has the form PREFIXmINFIXSUFFIXn. 66 # Needed until we can rely on m4_combine added in Autoconf 2.62. 67 m4_define([lt_combine], 68 [m4_if(m4_eval([$# > 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. 80 m4_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 # ----------------------------- 90 m4_define([lt_dict_add], 91 [m4_define([$1($2)], [$3])]) 92 93 94 # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) 95 # -------------------------------------------- 96 m4_define([lt_dict_add_subkey], 97 [m4_define([$1($2:$3)], [$4])]) 98 99 100 # lt_dict_fetch(DICT, KEY, [SUBKEY]) 101 # ---------------------------------- 102 m4_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 # ----------------------------------------------------------------- 110 m4_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 # -------------------------------------------------------------- 118 m4_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
