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1 | package ExtUtils::Mksymlists; |
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2 | |
3 | use 5.005_64; |
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4 | use strict qw[ subs refs ]; |
5 | # no strict 'vars'; # until filehandles are exempted |
6 | |
7 | use Carp; |
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8 | use Exporter; |
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9 | our(@ISA, @EXPORT, $VERSION); |
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10 | @ISA = 'Exporter'; |
11 | @EXPORT = '&Mksymlists'; |
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12 | $VERSION = substr q$Revision: 1.17 $, 10; |
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13 | |
14 | sub Mksymlists { |
15 | my(%spec) = @_; |
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16 | my($osname) = $^O; |
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17 | |
18 | croak("Insufficient information specified to Mksymlists") |
19 | unless ( $spec{NAME} or |
20 | ($spec{FILE} and ($spec{DL_FUNCS} or $spec{FUNCLIST})) ); |
21 | |
22 | $spec{DL_VARS} = [] unless $spec{DL_VARS}; |
23 | ($spec{FILE} = $spec{NAME}) =~ s/.*::// unless $spec{FILE}; |
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24 | $spec{FUNCLIST} = [] unless $spec{FUNCLIST}; |
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25 | $spec{DL_FUNCS} = { $spec{NAME} => [] } |
26 | unless ( ($spec{DL_FUNCS} and keys %{$spec{DL_FUNCS}}) or |
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27 | @{$spec{FUNCLIST}}); |
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28 | if (defined $spec{DL_FUNCS}) { |
29 | my($package); |
30 | foreach $package (keys %{$spec{DL_FUNCS}}) { |
31 | my($packprefix,$sym,$bootseen); |
32 | ($packprefix = $package) =~ s/\W/_/g; |
33 | foreach $sym (@{$spec{DL_FUNCS}->{$package}}) { |
34 | if ($sym =~ /^boot_/) { |
35 | push(@{$spec{FUNCLIST}},$sym); |
36 | $bootseen++; |
37 | } |
38 | else { push(@{$spec{FUNCLIST}},"XS_${packprefix}_$sym"); } |
39 | } |
40 | push(@{$spec{FUNCLIST}},"boot_$packprefix") unless $bootseen; |
41 | } |
42 | } |
43 | |
44 | # We'll need this if we ever add any OS which uses mod2fname |
760ac839 |
45 | # not as pseudo-builtin. |
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46 | # require DynaLoader; |
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47 | if (defined &DynaLoader::mod2fname and not $spec{DLBASE}) { |
48 | $spec{DLBASE} = DynaLoader::mod2fname([ split(/::/,$spec{NAME}) ]); |
49 | } |
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50 | |
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51 | if ($osname eq 'aix') { _write_aix(\%spec); } |
52 | elsif ($osname eq 'VMS') { _write_vms(\%spec) } |
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53 | elsif ($osname eq 'os2') { _write_os2(\%spec) } |
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54 | elsif ($osname eq 'MSWin32') { _write_win32(\%spec) } |
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55 | else { croak("Don't know how to create linker option file for $osname\n"); } |
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56 | } |
57 | |
58 | |
59 | sub _write_aix { |
60 | my($data) = @_; |
61 | |
62 | rename "$data->{FILE}.exp", "$data->{FILE}.exp_old"; |
63 | |
64 | open(EXP,">$data->{FILE}.exp") |
65 | or croak("Can't create $data->{FILE}.exp: $!\n"); |
66 | print EXP join("\n",@{$data->{DL_VARS}}, "\n") if @{$data->{DL_VARS}}; |
67 | print EXP join("\n",@{$data->{FUNCLIST}}, "\n") if @{$data->{FUNCLIST}}; |
68 | close EXP; |
69 | } |
70 | |
71 | |
72 | sub _write_os2 { |
73 | my($data) = @_; |
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74 | require Config; |
75 | my $threaded = ($Config::Config{archname} =~ /-thread/ ? " threaded" : ""); |
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76 | |
77 | if (not $data->{DLBASE}) { |
78 | ($data->{DLBASE} = $data->{NAME}) =~ s/.*:://; |
79 | $data->{DLBASE} = substr($data->{DLBASE},0,7) . '_'; |
80 | } |
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81 | my $distname = $data->{DISTNAME} || $data->{NAME}; |
82 | $distname = "Distribution $distname"; |
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83 | my $comment = "Perl (v$Config::Config{version}$threaded) module $data->{NAME}"; |
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84 | if ($data->{INSTALLDIRS} and $data->{INSTALLDIRS} eq 'perl') { |
85 | $distname = 'perl5-porters@perl.org'; |
86 | $comment = "Core $comment"; |
87 | } |
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88 | rename "$data->{FILE}.def", "$data->{FILE}_def.old"; |
89 | |
90 | open(DEF,">$data->{FILE}.def") |
91 | or croak("Can't create $data->{FILE}.def: $!\n"); |
92 | print DEF "LIBRARY '$data->{DLBASE}' INITINSTANCE TERMINSTANCE\n"; |
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93 | print DEF "DESCRIPTION '\@#$distname:$data->{VERSION}#\@ $comment'\n"; |
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94 | print DEF "CODE LOADONCALL\n"; |
95 | print DEF "DATA LOADONCALL NONSHARED MULTIPLE\n"; |
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96 | print DEF "EXPORTS\n "; |
97 | print DEF join("\n ",@{$data->{DL_VARS}}, "\n") if @{$data->{DL_VARS}}; |
98 | print DEF join("\n ",@{$data->{FUNCLIST}}, "\n") if @{$data->{FUNCLIST}}; |
99 | if (%{$data->{IMPORTS}}) { |
100 | print DEF "IMPORTS\n"; |
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101 | my ($name, $exp); |
102 | while (($name, $exp)= each %{$data->{IMPORTS}}) { |
103 | print DEF " $name=$exp\n"; |
104 | } |
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105 | } |
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106 | close DEF; |
107 | } |
108 | |
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109 | sub _write_win32 { |
110 | my($data) = @_; |
111 | |
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112 | require Config; |
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113 | if (not $data->{DLBASE}) { |
114 | ($data->{DLBASE} = $data->{NAME}) =~ s/.*:://; |
115 | $data->{DLBASE} = substr($data->{DLBASE},0,7) . '_'; |
116 | } |
117 | rename "$data->{FILE}.def", "$data->{FILE}_def.old"; |
118 | |
119 | open(DEF,">$data->{FILE}.def") |
120 | or croak("Can't create $data->{FILE}.def: $!\n"); |
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121 | # put library name in quotes (it could be a keyword, like 'Alias') |
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122 | if ($Config::Config{'cc'} !~ /^gcc/i) { |
123 | print DEF "LIBRARY \"$data->{DLBASE}\"\n"; |
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124 | } |
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125 | print DEF "EXPORTS\n "; |
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126 | my @syms; |
127 | # Export public symbols both with and without underscores to |
128 | # ensure compatibility between DLLs from different compilers |
129 | # NOTE: DynaLoader itself only uses the names without underscores, |
130 | # so this is only to cover the case when the extension DLL may be |
131 | # linked to directly from C. GSAR 97-07-10 |
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132 | if ($Config::Config{'cc'} =~ /^bcc/i) { |
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133 | for (@{$data->{DL_VARS}}, @{$data->{FUNCLIST}}) { |
134 | push @syms, "_$_", "$_ = _$_"; |
135 | } |
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136 | } |
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137 | else { |
138 | for (@{$data->{DL_VARS}}, @{$data->{FUNCLIST}}) { |
139 | push @syms, "$_", "_$_ = $_"; |
140 | } |
141 | } |
142 | print DEF join("\n ",@syms, "\n") if @syms; |
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143 | if (%{$data->{IMPORTS}}) { |
144 | print DEF "IMPORTS\n"; |
145 | my ($name, $exp); |
146 | while (($name, $exp)= each %{$data->{IMPORTS}}) { |
147 | print DEF " $name=$exp\n"; |
148 | } |
149 | } |
150 | close DEF; |
151 | } |
152 | |
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153 | |
154 | sub _write_vms { |
155 | my($data) = @_; |
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156 | |
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157 | require Config; # a reminder for once we do $^O |
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158 | require ExtUtils::XSSymSet; |
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159 | |
160 | my($isvax) = $Config::Config{'arch'} =~ /VAX/i; |
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161 | my($set) = new ExtUtils::XSSymSet; |
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162 | my($sym); |
163 | |
164 | rename "$data->{FILE}.opt", "$data->{FILE}.opt_old"; |
165 | |
166 | open(OPT,">$data->{FILE}.opt") |
167 | or croak("Can't create $data->{FILE}.opt: $!\n"); |
168 | |
169 | # Options file declaring universal symbols |
170 | # Used when linking shareable image for dynamic extension, |
171 | # or when linking PerlShr into which we've added this package |
172 | # as a static extension |
173 | # We don't do anything to preserve order, so we won't relax |
174 | # the GSMATCH criteria for a dynamic extension |
175 | |
176 | foreach $sym (@{$data->{FUNCLIST}}) { |
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177 | my $safe = $set->addsym($sym); |
178 | if ($isvax) { print OPT "UNIVERSAL=$safe\n" } |
179 | else { print OPT "SYMBOL_VECTOR=($safe=PROCEDURE)\n"; } |
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180 | } |
181 | foreach $sym (@{$data->{DL_VARS}}) { |
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182 | my $safe = $set->addsym($sym); |
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183 | print OPT "PSECT_ATTR=${sym},PIC,OVR,RD,NOEXE,WRT,NOSHR\n"; |
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184 | if ($isvax) { print OPT "UNIVERSAL=$safe\n" } |
185 | else { print OPT "SYMBOL_VECTOR=($safe=DATA)\n"; } |
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186 | } |
187 | close OPT; |
188 | |
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189 | } |
190 | |
191 | 1; |
192 | |
193 | __END__ |
194 | |
195 | =head1 NAME |
196 | |
197 | ExtUtils::Mksymlists - write linker options files for dynamic extension |
198 | |
199 | =head1 SYNOPSIS |
200 | |
201 | use ExtUtils::Mksymlists; |
202 | Mksymlists({ NAME => $name , |
203 | DL_VARS => [ $var1, $var2, $var3 ], |
204 | DL_FUNCS => { $pkg1 => [ $func1, $func2 ], |
205 | $pkg2 => [ $func3 ] }); |
206 | |
207 | =head1 DESCRIPTION |
208 | |
209 | C<ExtUtils::Mksymlists> produces files used by the linker under some OSs |
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210 | during the creation of shared libraries for dynamic extensions. It is |
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211 | normally called from a MakeMaker-generated Makefile when the extension |
212 | is built. The linker option file is generated by calling the function |
213 | C<Mksymlists>, which is exported by default from C<ExtUtils::Mksymlists>. |
214 | It takes one argument, a list of key-value pairs, in which the following |
215 | keys are recognized: |
216 | |
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217 | =over |
218 | |
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219 | =item DLBASE |
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220 | |
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221 | This item specifies the name by which the linker knows the |
222 | extension, which may be different from the name of the |
223 | extension itself (for instance, some linkers add an '_' to the |
224 | name of the extension). If it is not specified, it is derived |
225 | from the NAME attribute. It is presently used only by OS2 and Win32. |
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226 | |
227 | =item DL_FUNCS |
228 | |
229 | This is identical to the DL_FUNCS attribute available via MakeMaker, |
230 | from which it is usually taken. Its value is a reference to an |
231 | associative array, in which each key is the name of a package, and |
232 | each value is an a reference to an array of function names which |
233 | should be exported by the extension. For instance, one might say |
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234 | C<DL_FUNCS =E<gt> { Homer::Iliad =E<gt> [ qw(trojans greeks) ], |
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235 | Homer::Odyssey =E<gt> [ qw(travellers family suitors) ] }>. The |
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236 | function names should be identical to those in the XSUB code; |
237 | C<Mksymlists> will alter the names written to the linker option |
238 | file to match the changes made by F<xsubpp>. In addition, if |
239 | none of the functions in a list begin with the string B<boot_>, |
240 | C<Mksymlists> will add a bootstrap function for that package, |
241 | just as xsubpp does. (If a B<boot_E<lt>pkgE<gt>> function is |
242 | present in the list, it is passed through unchanged.) If |
243 | DL_FUNCS is not specified, it defaults to the bootstrap |
244 | function for the extension specified in NAME. |
245 | |
246 | =item DL_VARS |
247 | |
248 | This is identical to the DL_VARS attribute available via MakeMaker, |
249 | and, like DL_FUNCS, it is usually specified via MakeMaker. Its |
250 | value is a reference to an array of variable names which should |
251 | be exported by the extension. |
252 | |
253 | =item FILE |
254 | |
255 | This key can be used to specify the name of the linker option file |
256 | (minus the OS-specific extension), if for some reason you do not |
257 | want to use the default value, which is the last word of the NAME |
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258 | attribute (I<e.g.> for C<Tk::Canvas>, FILE defaults to C<Canvas>). |
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259 | |
260 | =item FUNCLIST |
261 | |
262 | This provides an alternate means to specify function names to be |
263 | exported from the extension. Its value is a reference to an |
264 | array of function names to be exported by the extension. These |
265 | names are passed through unaltered to the linker options file. |
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266 | Specifying a value for the FUNCLIST attribute suppresses automatic |
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267 | generation of the bootstrap function for the package. To still create |
268 | the bootstrap name you have to specify the package name in the |
269 | DL_FUNCS hash: |
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270 | |
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271 | Mksymlists({ NAME => $name , |
272 | FUNCLIST => [ $func1, $func2 ], |
273 | DL_FUNCS => { $pkg => [] } }); |
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274 | |
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275 | |
276 | =item IMPORTS |
277 | |
278 | This attribute is used to specify names to be imported into the |
279 | extension. It is currently only used by OS/2 and Win32. |
280 | |
281 | =item NAME |
282 | |
283 | This gives the name of the extension (I<e.g.> C<Tk::Canvas>) for which |
284 | the linker option file will be produced. |
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285 | |
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286 | =back |
287 | |
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288 | When calling C<Mksymlists>, one should always specify the NAME |
289 | attribute. In most cases, this is all that's necessary. In |
290 | the case of unusual extensions, however, the other attributes |
291 | can be used to provide additional information to the linker. |
292 | |
293 | =head1 AUTHOR |
294 | |
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295 | Charles Bailey I<E<lt>bailey@newman.upenn.eduE<gt>> |
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296 | |
297 | =head1 REVISION |
298 | |
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299 | Last revised 14-Feb-1996, for Perl 5.002. |