1 | # minimod.PL writes the contents of miniperlmain.c into the module |
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2 | # ExtUtils::Miniperl for later perusal (when the perl source is |
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3 | # deleted) |
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4 | # |
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5 | # It also writes the subroutine writemain(), which takes as its |
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6 | # arguments module names that shall be statically linked into perl. |
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7 | # |
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8 | # Authors: Andreas Koenig <k@franz.ww.TU-Berlin.DE>, Tim Bunce |
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9 | # <Tim.Bunce@ig.co.uk> |
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10 | # |
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11 | # Version 1.0, Feb 2nd 1995 by Andreas Koenig |
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12 | |
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13 | print <<'END'; |
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14 | # This File keeps the contents of miniperlmain.c. |
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15 | # |
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16 | # It was generated automatically by minimod.PL from the contents |
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17 | # of miniperlmain.c. Don't edit this file! |
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18 | # |
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19 | # ANY CHANGES MADE HERE WILL BE LOST! |
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20 | # |
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21 | |
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22 | |
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23 | package ExtUtils::Miniperl; |
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24 | require Exporter; |
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25 | @ISA = qw(Exporter); |
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26 | @EXPORT = qw(&writemain); |
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27 | |
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28 | $head= <<'EOF!HEAD'; |
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29 | END |
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30 | |
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31 | open MINI, "miniperlmain.c"; |
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32 | while (<MINI>) { |
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33 | last if /Do not delete this line--writemain depends on it/; |
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34 | print; |
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35 | } |
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36 | |
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37 | print <<'END'; |
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38 | EOF!HEAD |
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39 | $tail=<<'EOF!TAIL'; |
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40 | END |
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41 | |
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42 | while (<MINI>) { |
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43 | print unless /dXSUB_SYS/; |
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44 | } |
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45 | close MINI; |
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46 | |
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47 | print <<'END'; |
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48 | EOF!TAIL |
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49 | |
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50 | sub writemain{ |
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51 | my(@exts) = @_; |
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52 | |
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53 | my($pname); |
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54 | my($dl) = canon('/','DynaLoader'); |
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55 | print $head; |
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56 | |
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57 | foreach $_ (@exts){ |
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58 | my($pname) = canon('/', $_); |
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59 | my($mname, $cname); |
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60 | ($mname = $pname) =~ s!/!::!g; |
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61 | ($cname = $pname) =~ s!/!__!g; |
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62 | print "EXTERN_C void boot_${cname} (CV* cv);\n"; |
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63 | } |
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64 | |
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65 | my ($tail1,$tail2) = ( $tail =~ /\A(.*\n)(\s*\}.*)\Z/s ); |
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66 | print $tail1; |
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67 | |
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68 | print "\tchar *file = __FILE__;\n"; |
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69 | print "\tdXSUB_SYS;\n" if $] > 5.002; |
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70 | |
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71 | foreach $_ (@exts){ |
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72 | my($pname) = canon('/', $_); |
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73 | my($mname, $cname, $ccode); |
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74 | ($mname = $pname) =~ s!/!::!g; |
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75 | ($cname = $pname) =~ s!/!__!g; |
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76 | print "\t{\n"; |
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77 | if ($pname eq $dl){ |
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78 | # Must NOT install 'DynaLoader::boot_DynaLoader' as 'bootstrap'! |
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79 | # boot_DynaLoader is called directly in DynaLoader.pm |
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80 | $ccode = "\t/* DynaLoader is a special case */\n |
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81 | \tnewXS(\"${mname}::boot_${cname}\", boot_${cname}, file);\n"; |
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82 | print $ccode unless $SEEN{$ccode}++; |
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83 | } else { |
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84 | $ccode = "\tnewXS(\"${mname}::bootstrap\", boot_${cname}, file);\n"; |
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85 | print $ccode unless $SEEN{$ccode}++; |
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86 | } |
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87 | print "\t}\n"; |
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88 | } |
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89 | print $tail2; |
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90 | } |
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91 | |
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92 | sub canon{ |
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93 | my($as, @ext) = @_; |
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94 | foreach(@ext){ |
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95 | # might be X::Y or lib/auto/X/Y/Y.a |
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96 | next if s!::!/!g; |
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97 | s:^(lib|ext)/(auto/)?::; |
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98 | s:/\w+\.\w+$::; |
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99 | } |
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100 | grep(s:/:$as:, @ext) if ($as ne '/'); |
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101 | @ext; |
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102 | } |
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103 | |
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104 | 1; |
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105 | __END__ |
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106 | |
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107 | =head1 NAME |
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108 | |
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109 | ExtUtils::Miniperl, writemain - write the C code for perlmain.c |
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110 | |
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111 | =head1 SYNOPSIS |
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112 | |
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113 | C<use ExtUtils::Miniperl;> |
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114 | |
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115 | C<writemain(@directories);> |
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116 | |
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117 | =head1 DESCRIPTION |
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118 | |
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119 | This whole module is written when perl itself is built from a script |
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120 | called minimod.PL. In case you want to patch it, please patch |
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121 | minimod.PL in the perl distribution instead. |
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122 | |
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123 | writemain() takes an argument list of directories containing archive |
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124 | libraries that relate to perl modules and should be linked into a new |
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125 | perl binary. It writes to STDOUT a corresponding perlmain.c file that |
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126 | is a plain C file containing all the bootstrap code to make the |
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127 | modules associated with the libraries available from within perl. |
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128 | |
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129 | The typical usage is from within a Makefile generated by |
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130 | ExtUtils::MakeMaker. So under normal circumstances you won't have to |
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131 | deal with this module directly. |
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132 | |
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133 | =head1 SEE ALSO |
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134 | |
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135 | L<ExtUtils::MakeMaker> |
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136 | |
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137 | =cut |
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138 | |
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139 | END |
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