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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 ($osname eq 'aix') { _write_aix(\%spec); } |
6d697788 |
52 | elsif ($osname eq 'MacOS'){ _write_aix(\%spec) } |
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53 | elsif ($osname eq 'VMS') { _write_vms(\%spec) } |
bab2b58e |
54 | elsif ($osname eq 'os2') { _write_os2(\%spec) } |
68dc0745 |
55 | elsif ($osname eq 'MSWin32') { _write_win32(\%spec) } |
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56 | else { croak("Don't know how to create linker option file for $osname\n"); } |
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57 | } |
58 | |
59 | |
60 | sub _write_aix { |
61 | my($data) = @_; |
62 | |
63 | rename "$data->{FILE}.exp", "$data->{FILE}.exp_old"; |
64 | |
65 | open(EXP,">$data->{FILE}.exp") |
66 | or croak("Can't create $data->{FILE}.exp: $!\n"); |
67 | print EXP join("\n",@{$data->{DL_VARS}}, "\n") if @{$data->{DL_VARS}}; |
68 | print EXP join("\n",@{$data->{FUNCLIST}}, "\n") if @{$data->{FUNCLIST}}; |
69 | close EXP; |
70 | } |
71 | |
72 | |
73 | sub _write_os2 { |
74 | my($data) = @_; |
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75 | require Config; |
76 | my $threaded = ($Config::Config{archname} =~ /-thread/ ? " threaded" : ""); |
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77 | |
78 | if (not $data->{DLBASE}) { |
79 | ($data->{DLBASE} = $data->{NAME}) =~ s/.*:://; |
80 | $data->{DLBASE} = substr($data->{DLBASE},0,7) . '_'; |
81 | } |
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82 | my $distname = $data->{DISTNAME} || $data->{NAME}; |
83 | $distname = "Distribution $distname"; |
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84 | my $comment = "Perl (v$Config::Config{version}$threaded) module $data->{NAME}"; |
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85 | if ($data->{INSTALLDIRS} and $data->{INSTALLDIRS} eq 'perl') { |
86 | $distname = 'perl5-porters@perl.org'; |
87 | $comment = "Core $comment"; |
88 | } |
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89 | rename "$data->{FILE}.def", "$data->{FILE}_def.old"; |
90 | |
91 | open(DEF,">$data->{FILE}.def") |
92 | or croak("Can't create $data->{FILE}.def: $!\n"); |
93 | print DEF "LIBRARY '$data->{DLBASE}' INITINSTANCE TERMINSTANCE\n"; |
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94 | print DEF "DESCRIPTION '\@#$distname:$data->{VERSION}#\@ $comment'\n"; |
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95 | print DEF "CODE LOADONCALL\n"; |
96 | print DEF "DATA LOADONCALL NONSHARED MULTIPLE\n"; |
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97 | print DEF "EXPORTS\n "; |
98 | print DEF join("\n ",@{$data->{DL_VARS}}, "\n") if @{$data->{DL_VARS}}; |
99 | print DEF join("\n ",@{$data->{FUNCLIST}}, "\n") if @{$data->{FUNCLIST}}; |
100 | if (%{$data->{IMPORTS}}) { |
101 | print DEF "IMPORTS\n"; |
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102 | my ($name, $exp); |
103 | while (($name, $exp)= each %{$data->{IMPORTS}}) { |
104 | print DEF " $name=$exp\n"; |
105 | } |
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106 | } |
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107 | close DEF; |
108 | } |
109 | |
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110 | sub _write_win32 { |
111 | my($data) = @_; |
112 | |
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113 | require Config; |
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114 | if (not $data->{DLBASE}) { |
115 | ($data->{DLBASE} = $data->{NAME}) =~ s/.*:://; |
116 | $data->{DLBASE} = substr($data->{DLBASE},0,7) . '_'; |
117 | } |
118 | rename "$data->{FILE}.def", "$data->{FILE}_def.old"; |
119 | |
120 | open(DEF,">$data->{FILE}.def") |
121 | or croak("Can't create $data->{FILE}.def: $!\n"); |
84902520 |
122 | # put library name in quotes (it could be a keyword, like 'Alias') |
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123 | if ($Config::Config{'cc'} !~ /^gcc/i) { |
124 | print DEF "LIBRARY \"$data->{DLBASE}\"\n"; |
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125 | } |
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126 | print DEF "EXPORTS\n "; |
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127 | my @syms; |
128 | # Export public symbols both with and without underscores to |
129 | # ensure compatibility between DLLs from different compilers |
130 | # NOTE: DynaLoader itself only uses the names without underscores, |
131 | # so this is only to cover the case when the extension DLL may be |
132 | # linked to directly from C. GSAR 97-07-10 |
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133 | if ($Config::Config{'cc'} =~ /^bcc/i) { |
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134 | for (@{$data->{DL_VARS}}, @{$data->{FUNCLIST}}) { |
135 | push @syms, "_$_", "$_ = _$_"; |
136 | } |
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137 | } |
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138 | else { |
139 | for (@{$data->{DL_VARS}}, @{$data->{FUNCLIST}}) { |
140 | push @syms, "$_", "_$_ = $_"; |
141 | } |
142 | } |
143 | print DEF join("\n ",@syms, "\n") if @syms; |
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144 | if (%{$data->{IMPORTS}}) { |
145 | print DEF "IMPORTS\n"; |
146 | my ($name, $exp); |
147 | while (($name, $exp)= each %{$data->{IMPORTS}}) { |
148 | print DEF " $name=$exp\n"; |
149 | } |
150 | } |
151 | close DEF; |
152 | } |
153 | |
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154 | |
155 | sub _write_vms { |
156 | my($data) = @_; |
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157 | |
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158 | require Config; # a reminder for once we do $^O |
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159 | require ExtUtils::XSSymSet; |
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160 | |
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161 | my($isvax) = $Config::Config{'archname'} =~ /VAX/i; |
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162 | my($set) = new ExtUtils::XSSymSet; |
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163 | my($sym); |
164 | |
165 | rename "$data->{FILE}.opt", "$data->{FILE}.opt_old"; |
166 | |
167 | open(OPT,">$data->{FILE}.opt") |
168 | or croak("Can't create $data->{FILE}.opt: $!\n"); |
169 | |
170 | # Options file declaring universal symbols |
171 | # Used when linking shareable image for dynamic extension, |
172 | # or when linking PerlShr into which we've added this package |
173 | # as a static extension |
174 | # We don't do anything to preserve order, so we won't relax |
175 | # the GSMATCH criteria for a dynamic extension |
176 | |
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177 | print OPT "case_sensitive=yes\n" |
178 | if $Config::Config{d_vms_case_sensitive_symbols}; |
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179 | foreach $sym (@{$data->{FUNCLIST}}) { |
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180 | my $safe = $set->addsym($sym); |
181 | if ($isvax) { print OPT "UNIVERSAL=$safe\n" } |
182 | else { print OPT "SYMBOL_VECTOR=($safe=PROCEDURE)\n"; } |
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183 | } |
184 | foreach $sym (@{$data->{DL_VARS}}) { |
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185 | my $safe = $set->addsym($sym); |
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186 | print OPT "PSECT_ATTR=${sym},PIC,OVR,RD,NOEXE,WRT,NOSHR\n"; |
ff0cee69 |
187 | if ($isvax) { print OPT "UNIVERSAL=$safe\n" } |
188 | else { print OPT "SYMBOL_VECTOR=($safe=DATA)\n"; } |
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189 | } |
190 | close OPT; |
191 | |
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192 | } |
193 | |
194 | 1; |
195 | |
196 | __END__ |
197 | |
198 | =head1 NAME |
199 | |
200 | ExtUtils::Mksymlists - write linker options files for dynamic extension |
201 | |
202 | =head1 SYNOPSIS |
203 | |
204 | use ExtUtils::Mksymlists; |
205 | Mksymlists({ NAME => $name , |
206 | DL_VARS => [ $var1, $var2, $var3 ], |
207 | DL_FUNCS => { $pkg1 => [ $func1, $func2 ], |
208 | $pkg2 => [ $func3 ] }); |
209 | |
210 | =head1 DESCRIPTION |
211 | |
212 | C<ExtUtils::Mksymlists> produces files used by the linker under some OSs |
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213 | during the creation of shared libraries for dynamic extensions. It is |
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214 | normally called from a MakeMaker-generated Makefile when the extension |
215 | is built. The linker option file is generated by calling the function |
216 | C<Mksymlists>, which is exported by default from C<ExtUtils::Mksymlists>. |
217 | It takes one argument, a list of key-value pairs, in which the following |
218 | keys are recognized: |
219 | |
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220 | =over |
221 | |
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222 | =item DLBASE |
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223 | |
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224 | This item specifies the name by which the linker knows the |
225 | extension, which may be different from the name of the |
226 | extension itself (for instance, some linkers add an '_' to the |
227 | name of the extension). If it is not specified, it is derived |
228 | from the NAME attribute. It is presently used only by OS2 and Win32. |
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229 | |
230 | =item DL_FUNCS |
231 | |
232 | This is identical to the DL_FUNCS attribute available via MakeMaker, |
233 | from which it is usually taken. Its value is a reference to an |
234 | associative array, in which each key is the name of a package, and |
235 | each value is an a reference to an array of function names which |
236 | should be exported by the extension. For instance, one might say |
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237 | C<DL_FUNCS =E<gt> { Homer::Iliad =E<gt> [ qw(trojans greeks) ], |
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238 | Homer::Odyssey =E<gt> [ qw(travellers family suitors) ] }>. The |
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239 | function names should be identical to those in the XSUB code; |
240 | C<Mksymlists> will alter the names written to the linker option |
241 | file to match the changes made by F<xsubpp>. In addition, if |
242 | none of the functions in a list begin with the string B<boot_>, |
243 | C<Mksymlists> will add a bootstrap function for that package, |
244 | just as xsubpp does. (If a B<boot_E<lt>pkgE<gt>> function is |
245 | present in the list, it is passed through unchanged.) If |
246 | DL_FUNCS is not specified, it defaults to the bootstrap |
247 | function for the extension specified in NAME. |
248 | |
249 | =item DL_VARS |
250 | |
251 | This is identical to the DL_VARS attribute available via MakeMaker, |
252 | and, like DL_FUNCS, it is usually specified via MakeMaker. Its |
253 | value is a reference to an array of variable names which should |
254 | be exported by the extension. |
255 | |
256 | =item FILE |
257 | |
258 | This key can be used to specify the name of the linker option file |
259 | (minus the OS-specific extension), if for some reason you do not |
260 | want to use the default value, which is the last word of the NAME |
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261 | attribute (I<e.g.> for C<Tk::Canvas>, FILE defaults to C<Canvas>). |
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262 | |
263 | =item FUNCLIST |
264 | |
265 | This provides an alternate means to specify function names to be |
266 | exported from the extension. Its value is a reference to an |
267 | array of function names to be exported by the extension. These |
268 | names are passed through unaltered to the linker options file. |
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269 | Specifying a value for the FUNCLIST attribute suppresses automatic |
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270 | generation of the bootstrap function for the package. To still create |
271 | the bootstrap name you have to specify the package name in the |
272 | DL_FUNCS hash: |
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273 | |
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274 | Mksymlists({ NAME => $name , |
275 | FUNCLIST => [ $func1, $func2 ], |
276 | DL_FUNCS => { $pkg => [] } }); |
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277 | |
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278 | |
279 | =item IMPORTS |
280 | |
281 | This attribute is used to specify names to be imported into the |
282 | extension. It is currently only used by OS/2 and Win32. |
283 | |
284 | =item NAME |
285 | |
286 | This gives the name of the extension (I<e.g.> C<Tk::Canvas>) for which |
287 | the linker option file will be produced. |
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288 | |
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289 | =back |
290 | |
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291 | When calling C<Mksymlists>, one should always specify the NAME |
292 | attribute. In most cases, this is all that's necessary. In |
293 | the case of unusual extensions, however, the other attributes |
294 | can be used to provide additional information to the linker. |
295 | |
296 | =head1 AUTHOR |
297 | |
bd3fa61c |
298 | Charles Bailey I<E<lt>bailey@newman.upenn.eduE<gt>> |
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299 | |
300 | =head1 REVISION |
301 | |
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302 | Last revised 14-Feb-1996, for Perl 5.002. |