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1 # ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- |
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2 # |
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3 # Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc. |
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4 # Written by Gary V. Vaughan, 2004 |
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5 # |
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6 # This file is free software; the Free Software Foundation gives |
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7 # unlimited permission to copy and/or distribute it, with or without |
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8 # modifications, as long as this notice is preserved. |
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9 |
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10 # serial 6 ltsugar.m4 |
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11 |
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12 # This is to help aclocal find these macros, as it can't see m4_define. |
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13 AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])]) |
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14 |
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15 |
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16 # lt_join(SEP, ARG1, [ARG2...]) |
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17 # ----------------------------- |
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18 # Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their |
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19 # associated separator. |
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20 # Needed until we can rely on m4_join from Autoconf 2.62, since all earlier |
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21 # versions in m4sugar had bugs. |
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22 m4_define([lt_join], |
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23 [m4_if([$#], [1], [], |
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24 [$#], [2], [[$2]], |
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25 [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])]) |
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26 m4_define([_lt_join], |
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27 [m4_if([$#$2], [2], [], |
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28 [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])]) |
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29 |
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30 |
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31 # lt_car(LIST) |
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32 # lt_cdr(LIST) |
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33 # ------------ |
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34 # Manipulate m4 lists. |
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35 # These macros are necessary as long as will still need to support |
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36 # Autoconf-2.59 which quotes differently. |
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37 m4_define([lt_car], [[$1]]) |
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38 m4_define([lt_cdr], |
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39 [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], |
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40 [$#], 1, [], |
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41 [m4_dquote(m4_shift($@))])]) |
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42 m4_define([lt_unquote], $1) |
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43 |
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44 |
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45 # lt_append(MACRO-NAME, STRING, [SEPARATOR]) |
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46 # ------------------------------------------ |
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47 # Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'. |
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48 # Note that neither SEPARATOR nor STRING are expanded; they are appended |
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49 # to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked). |
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50 # No SEPARATOR is output if MACRO-NAME was previously undefined (different |
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51 # than defined and empty). |
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52 # |
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53 # This macro is needed until we can rely on Autoconf 2.62, since earlier |
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54 # versions of m4sugar mistakenly expanded SEPARATOR but not STRING. |
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55 m4_define([lt_append], |
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56 [m4_define([$1], |
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57 m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])]) |
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58 |
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59 |
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60 |
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61 # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) |
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62 # ---------------------------------------------------------- |
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63 # Produce a SEP delimited list of all paired combinations of elements of |
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64 # PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list |
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65 # has the form PREFIXmINFIXSUFFIXn. |
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66 # Needed until we can rely on m4_combine added in Autoconf 2.62. |
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67 m4_define([lt_combine], |
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68 [m4_if(m4_eval([$# > 3]), [1], |
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69 [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl |
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70 [[m4_foreach([_Lt_prefix], [$2], |
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71 [m4_foreach([_Lt_suffix], |
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72 ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[, |
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73 [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])]) |
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74 |
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75 |
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76 # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ]) |
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77 # ----------------------------------------------------------------------- |
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78 # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited |
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79 # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ. |
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80 m4_define([lt_if_append_uniq], |
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81 [m4_ifdef([$1], |
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82 [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1], |
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83 [lt_append([$1], [$2], [$3])$4], |
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84 [$5])], |
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85 [lt_append([$1], [$2], [$3])$4])]) |
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86 |
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87 |
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88 # lt_dict_add(DICT, KEY, VALUE) |
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89 # ----------------------------- |
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90 m4_define([lt_dict_add], |
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91 [m4_define([$1($2)], [$3])]) |
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92 |
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93 |
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94 # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) |
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95 # -------------------------------------------- |
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96 m4_define([lt_dict_add_subkey], |
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97 [m4_define([$1($2:$3)], [$4])]) |
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98 |
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99 |
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100 # lt_dict_fetch(DICT, KEY, [SUBKEY]) |
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101 # ---------------------------------- |
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102 m4_define([lt_dict_fetch], |
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103 [m4_ifval([$3], |
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104 m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]), |
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105 m4_ifdef([$1($2)], [m4_defn([$1($2)])]))]) |
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106 |
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107 |
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108 # lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE]) |
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109 # ----------------------------------------------------------------- |
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110 m4_define([lt_if_dict_fetch], |
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111 [m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4], |
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112 [$5], |
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113 [$6])]) |
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114 |
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115 |
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116 # lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...]) |
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117 # -------------------------------------------------------------- |
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118 m4_define([lt_dict_filter], |
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119 [m4_if([$5], [], [], |
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120 [lt_join(m4_quote(m4_default([$4], [[, ]])), |
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121 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]), |
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122 [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl |
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123 ]) |