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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 Free Software Foundation, Inc. |
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4 # Written by Gary V. Vaughan. |
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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 3 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 m4_define([lt_join], |
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21 [m4_case([$#], |
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22 [0], [m4_fatal([$0: too few arguments: $#])], |
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23 [1], [], |
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24 [2], [[$2]], |
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25 [m4_ifval([$2], |
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26 [[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]), |
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27 [_$0([$1], _lt_Arg)])], |
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28 [$0([$1], m4_shiftn(2, $@))])])[]dnl |
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29 ]) |
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30 m4_define([_lt_join], |
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31 [m4_ifval([$2],[$1][$2])[]dnl |
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32 ]) |
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33 |
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34 |
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35 # lt_car(LIST) |
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36 # lt_cdr(LIST) |
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37 # ------------ |
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38 # Manipulate m4 lists. |
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39 # These macros are necessary as long as will still need to support |
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40 # Autoconf-2.59 which quotes differently. |
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41 m4_define([lt_car], [[$1]]) |
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42 m4_define([lt_cdr], |
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43 [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], |
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44 [$#], 1, [], |
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45 [m4_dquote(m4_shift($@))])]) |
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46 m4_define([lt_unquote], $1) |
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47 |
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48 |
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49 # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) |
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50 # ---------------------------------------------------------- |
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51 # Produce a SEP delimited list of all paired combinations of elements of |
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52 # PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list |
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53 # has the form PREFIXmINFIXSUFFIXn. |
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54 m4_define([lt_combine], |
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55 [m4_if([$2], [], [], |
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56 [m4_if([$4], [], [], |
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57 [lt_join(m4_quote(m4_default([$1], [[, ]])), |
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58 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2], |
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59 [m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]), |
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60 [_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl |
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61 ]) |
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62 |
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63 |
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64 # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ]) |
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65 # ----------------------------------------------------------------------- |
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66 # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited |
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67 # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ. |
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68 m4_define([lt_if_append_uniq], |
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69 [m4_ifdef([$1], |
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70 [m4_bmatch($3[]m4_defn([$1])$3, $3[]m4_re_escape([$2])$3, |
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71 [$5], |
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72 [m4_append([$1], [$2], [$3])$4])], |
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73 [m4_append([$1], [$2], [$3])$4])]) |
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74 |
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75 |
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76 # lt_dict_add(DICT, KEY, VALUE) |
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77 # ----------------------------- |
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78 m4_define([lt_dict_add], |
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79 [m4_define([$1($2)], [$4])]) |
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80 |
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81 |
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82 # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) |
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83 # -------------------------------------------- |
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84 m4_define([lt_dict_add_subkey], |
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85 [m4_define([$1($2:$3)], [$4])]) |
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86 |
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87 |
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88 # lt_dict_fetch(DICT, KEY, [SUBKEY]) |
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89 # ---------------------------------- |
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90 m4_define([lt_dict_fetch], |
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91 [m4_ifval([$3], |
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92 m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]), |
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93 m4_ifdef([$1($2)], [m4_defn([$1($2)])]))]) |
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94 |
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95 |
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96 # lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE]) |
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97 # ----------------------------------------------------------------- |
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98 m4_define([lt_if_dict_fetch], |
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99 [m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4], |
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100 [$5], |
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101 [$6])]) |
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102 |
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103 |
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104 # lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...]) |
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105 # -------------------------------------------------------------- |
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106 m4_define([lt_dict_filter], |
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107 [m4_if([$5], [], [], |
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108 [lt_join(m4_quote(m4_default([$4], [[, ]])), |
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109 lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]), |
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110 [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl |
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111 ]) |