… | |
… | |
40 | |
40 | |
41 | With F<uClibc> and F<upx> on x86, you can create a single 500kb binary |
41 | With F<uClibc> and F<upx> on x86, you can create a single 500kb binary |
42 | that contains perl and 100 modules such as POSIX, AnyEvent, EV, IO::AIO, |
42 | that contains perl and 100 modules such as POSIX, AnyEvent, EV, IO::AIO, |
43 | Coro and so on. Or any other choice of modules. |
43 | Coro and so on. Or any other choice of modules. |
44 | |
44 | |
|
|
45 | To see how this turns out, you can try out smallperl and bigperl, two |
|
|
46 | pre-built static and compressed perl binaries with many and even more |
|
|
47 | modules: just follow the links at L<http://staticperl.schmorp.de/>. |
|
|
48 | |
45 | The created files do not need write access to the file system (like PAR |
49 | The created files do not need write access to the file system (like PAR |
46 | does). In fact, since this script is in many ways similar to PAR::Packer, |
50 | does). In fact, since this script is in many ways similar to PAR::Packer, |
47 | here are the differences: |
51 | here are the differences: |
48 | |
52 | |
49 | =over 4 |
53 | =over 4 |
… | |
… | |
111 | Afterwards, you create a list of files and modules you want to include, |
115 | Afterwards, you create a list of files and modules you want to include, |
112 | and then either build a new perl binary (that acts just like a normal perl |
116 | and then either build a new perl binary (that acts just like a normal perl |
113 | except everything is compiled in), or you create bundle files (basically C |
117 | except everything is compiled in), or you create bundle files (basically C |
114 | sources you can use to embed all files into your project). |
118 | sources you can use to embed all files into your project). |
115 | |
119 | |
116 | This step is very fast (a few seconds if PPI is not used for stripping, |
120 | This step is very fast (a few seconds if PPI is not used for stripping, or |
117 | more seconds otherwise, as PPI is very slow), and can be tweaked and |
121 | the stripped files are in the cache), and can be tweaked and repeated as |
118 | repeated as often as necessary. |
122 | often as necessary. |
119 | |
123 | |
120 | =head1 THE F<STATICPERL> SCRIPT |
124 | =head1 THE F<STATICPERL> SCRIPT |
121 | |
125 | |
122 | This module installs a script called F<staticperl> into your perl |
126 | This module installs a script called F<staticperl> into your perl |
123 | binary directory. The script is fully self-contained, and can be used |
127 | binary directory. The script is fully self-contained, and can be |
124 | without perl (for example, in an uClibc chroot environment). In fact, |
128 | used without perl (for example, in an uClibc chroot environment). In |
125 | it can be extracted from the C<App::Staticperl> distribution tarball as |
129 | fact, it can be extracted from the C<App::Staticperl> distribution |
126 | F<bin/staticperl>, without any installation. |
130 | tarball as F<bin/staticperl>, without any installation. The |
|
|
131 | newest (possibly alpha) version can also be downloaded from |
|
|
132 | L<http://staticperl.schmorp.de/staticperl>. |
127 | |
133 | |
128 | F<staticperl> interprets the first argument as a command to execute, |
134 | F<staticperl> interprets the first argument as a command to execute, |
129 | optionally followed by any parameters. |
135 | optionally followed by any parameters. |
130 | |
136 | |
131 | There are two command categories: the "phase 1" commands which deal with |
137 | There are two command categories: the "phase 1" commands which deal with |
… | |
… | |
141 | |
147 | |
142 | The command |
148 | The command |
143 | |
149 | |
144 | staticperl install |
150 | staticperl install |
145 | |
151 | |
146 | Is normally all you need: It installs the perl interpreter in |
152 | is normally all you need: It installs the perl interpreter in |
147 | F<~/.staticperl/perl>. It downloads, configures, builds and installs the |
153 | F<~/.staticperl/perl>. It downloads, configures, builds and installs the |
148 | perl interpreter if required. |
154 | perl interpreter if required. |
149 | |
155 | |
150 | Most of the following commands simply run one or more steps of this |
156 | Most of the following F<staticperl> subcommands simply run one or more |
151 | sequence. |
157 | steps of this sequence. |
|
|
158 | |
|
|
159 | If it fails, then most commonly because the compiler options I selected |
|
|
160 | are not supported by your compiler - either edit the F<staticperl> script |
|
|
161 | yourself or create F<~/.staticperl> shell script where your set working |
|
|
162 | C<PERL_CCFLAGS> etc. variables. |
152 | |
163 | |
153 | To force recompilation or reinstallation, you need to run F<staticperl |
164 | To force recompilation or reinstallation, you need to run F<staticperl |
154 | distclean> first. |
165 | distclean> first. |
155 | |
166 | |
156 | =over 4 |
167 | =over 4 |
|
|
168 | |
|
|
169 | =item F<staticperl version> |
|
|
170 | |
|
|
171 | Prints some info about the version of the F<staticperl> script you are using. |
157 | |
172 | |
158 | =item F<staticperl fetch> |
173 | =item F<staticperl fetch> |
159 | |
174 | |
160 | Runs only the download and unpack phase, unless this has already happened. |
175 | Runs only the download and unpack phase, unless this has already happened. |
161 | |
176 | |
… | |
… | |
199 | |
214 | |
200 | =item F<staticperl clean> |
215 | =item F<staticperl clean> |
201 | |
216 | |
202 | Deletes the perl source directory (and potentially cleans up other |
217 | Deletes the perl source directory (and potentially cleans up other |
203 | intermediate files). This can be used to clean up files only needed for |
218 | intermediate files). This can be used to clean up files only needed for |
204 | building perl, without removing the installed perl interpreter, or to |
219 | building perl, without removing the installed perl interpreter. |
205 | force a re-build from scratch. |
|
|
206 | |
220 | |
207 | At the moment, it doesn't delete downloaded tarballs. |
221 | At the moment, it doesn't delete downloaded tarballs. |
|
|
222 | |
|
|
223 | The exact semantics of this command will probably change. |
208 | |
224 | |
209 | =item F<staticperl distclean> |
225 | =item F<staticperl distclean> |
210 | |
226 | |
211 | This wipes your complete F<~/.staticperl> directory. Be careful with this, |
227 | This wipes your complete F<~/.staticperl> directory. Be careful with this, |
212 | it nukes your perl download, perl sources, perl distribution and any |
228 | it nukes your perl download, perl sources, perl distribution and any |
… | |
… | |
262 | -MAnyEvent::Impl::Perl -MAnyEvent::HTTPD -MURI::http |
278 | -MAnyEvent::Impl::Perl -MAnyEvent::HTTPD -MURI::http |
263 | |
279 | |
264 | # run it |
280 | # run it |
265 | ./app |
281 | ./app |
266 | |
282 | |
|
|
283 | Here are the three phase 2 commands: |
|
|
284 | |
|
|
285 | =over 4 |
|
|
286 | |
|
|
287 | =item F<staticperl mkbundle> args... |
|
|
288 | |
|
|
289 | The "default" bundle command - it interprets the given bundle options and |
|
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290 | writes out F<bundle.h>, F<bundle.c>, F<bundle.ccopts> and F<bundle.ldopts> |
|
|
291 | files, useful for embedding. |
|
|
292 | |
|
|
293 | =item F<staticperl mkperl> args... |
|
|
294 | |
|
|
295 | Creates a bundle just like F<staticperl mkbundle> (in fact, it's the same |
|
|
296 | as invoking F<staticperl mkbundle --perl> args...), but then compiles and |
|
|
297 | links a new perl interpreter that embeds the created bundle, then deletes |
|
|
298 | all intermediate files. |
|
|
299 | |
|
|
300 | =item F<staticperl mkapp> filename args... |
|
|
301 | |
|
|
302 | Does the same as F<staticperl mkbundle> (in fact, it's the same as |
|
|
303 | invoking F<staticperl mkbundle --app> filename args...), but then compiles |
|
|
304 | and links a new standalone application that simply initialises the perl |
|
|
305 | interpreter. |
|
|
306 | |
|
|
307 | The difference to F<staticperl mkperl> is that the standalone application |
|
|
308 | does not act like a perl interpreter would - in fact, by default it would |
|
|
309 | just do nothing and exit immediately, so you should specify some code to |
|
|
310 | be executed via the F<--boot> option. |
|
|
311 | |
|
|
312 | =back |
|
|
313 | |
267 | =head3 OPTION PROCESSING |
314 | =head3 OPTION PROCESSING |
268 | |
315 | |
269 | All options can be given as arguments on the command line (typically |
316 | All options can be given as arguments on the command line (typically |
270 | using long (e.g. C<--verbose>) or short option (e.g. C<-v>) style). Since |
317 | using long (e.g. C<--verbose>) or short option (e.g. C<-v>) style). Since |
271 | specifying a lot of modules can make the command line very cumbersome, |
318 | specifying a lot of options can make the command line very long and |
272 | you can put all long options into a "bundle specification file" (with or |
319 | unwieldy, you can put all long options into a "bundle specification file" |
273 | without C<--> prefix) and specify this bundle file instead. |
320 | (one option per line, with or without C<--> prefix) and specify this |
|
|
321 | bundle file instead. |
274 | |
322 | |
275 | For example, the command given earlier could also look like this: |
323 | For example, the command given earlier to link a new F<perl> could also |
|
|
324 | look like this: |
276 | |
325 | |
277 | staticperl mkperl httpd.bundle |
326 | staticperl mkperl httpd.bundle |
278 | |
327 | |
279 | And all options could be in F<httpd.bundle>: |
328 | With all options stored in the F<httpd.bundle> file (one option per line, |
280 | |
329 | everything after the option is an argument): |
|
|
330 | |
281 | use "Config_heavy.pl" |
331 | use "Config_heavy.pl" |
282 | use AnyEvent::Impl::Perl |
332 | use AnyEvent::Impl::Perl |
283 | use AnyEvent::HTTPD |
333 | use AnyEvent::HTTPD |
284 | use URI::http |
334 | use URI::http |
285 | add eg/httpd httpd.pm |
335 | add eg/httpd httpd.pm |
286 | |
336 | |
287 | All options that specify modules or files to be added are processed in the |
337 | All options that specify modules or files to be added are processed in the |
288 | order given on the command line (that affects the C<--use> and C<--eval> |
338 | order given on the command line. |
289 | options at the moment). |
|
|
290 | |
339 | |
291 | =head3 MKBUNDLE OPTIONS |
340 | =head3 BUNDLE CREATION WORKFLOW / STATICPELR MKBUNDLE OPTIONS |
292 | |
341 | |
293 | =over 4 |
342 | F<staticperl mkbundle> works by first assembling a list of candidate |
|
|
343 | files and modules to include, then filtering them by include/exclude |
|
|
344 | patterns. The remaining modules (together with their direct dependencies, |
|
|
345 | such as link libraries and L<AutoLoader> files) are then converted into |
|
|
346 | bundle files suitable for embedding. F<staticperl mkbundle> can then |
|
|
347 | optionally build a new perl interpreter or a standalone application. |
294 | |
348 | |
|
|
349 | =over 4 |
|
|
350 | |
|
|
351 | =item Step 0: Generic argument processing. |
|
|
352 | |
|
|
353 | The following options influence F<staticperl mkbundle> itself. |
|
|
354 | |
|
|
355 | =over 4 |
|
|
356 | |
295 | =item --verbose | -v |
357 | =item C<--verbose> | C<-v> |
296 | |
358 | |
297 | Increases the verbosity level by one (the default is C<1>). |
359 | Increases the verbosity level by one (the default is C<1>). |
298 | |
360 | |
299 | =item --quiet | -q |
361 | =item C<--quiet> | C<-q> |
300 | |
362 | |
301 | Decreases the verbosity level by one. |
363 | Decreases the verbosity level by one. |
302 | |
364 | |
|
|
365 | =item any other argument |
|
|
366 | |
|
|
367 | Any other argument is interpreted as a bundle specification file, which |
|
|
368 | supports all options (without extra quoting), one option per line, in the |
|
|
369 | format C<option> or C<option argument>. They will effectively be expanded |
|
|
370 | and processed as if they were directly written on the command line, in |
|
|
371 | place of the file name. |
|
|
372 | |
|
|
373 | =back |
|
|
374 | |
|
|
375 | =item Step 1: gather candidate files and modules |
|
|
376 | |
|
|
377 | In this step, modules, perl libraries (F<.pl> files) and other files are |
|
|
378 | selected for inclusion in the bundle. The relevant options are executed |
|
|
379 | in order (this makes a difference mostly for C<--eval>, which can rely on |
|
|
380 | earlier C<--use> options to have been executed). |
|
|
381 | |
|
|
382 | =over 4 |
|
|
383 | |
|
|
384 | =item C<--use> F<module> | C<-M>F<module> |
|
|
385 | |
|
|
386 | Include the named module and trace direct dependencies. This is done by |
|
|
387 | C<require>'ing the module in a subprocess and tracing which other modules |
|
|
388 | and files it actually loads. |
|
|
389 | |
|
|
390 | Example: include AnyEvent and AnyEvent::Impl::Perl. |
|
|
391 | |
|
|
392 | staticperl mkbundle --use AnyEvent --use AnyEvent::Impl::Perl |
|
|
393 | |
|
|
394 | Sometimes you want to load old-style "perl libraries" (F<.pl> files), |
|
|
395 | or maybe other weirdly named files. To do that, you need to quote |
|
|
396 | the name in single or double quotes (this is because F<staticperl> |
|
|
397 | I<literally> just adds the string after the C<require> - which acts |
|
|
398 | different when confronted with quoted vs. unquoted strings). When given on |
|
|
399 | the command line, you probably need to quote once more to avoid your shell |
|
|
400 | interpreting it. Common cases that need this are F<Config_heavy.pl> and |
|
|
401 | F<utf8_heavy.pl>. |
|
|
402 | |
|
|
403 | Example: include the required files for F<perl -V> to work in all its |
|
|
404 | glory (F<Config.pm> is included automatically by this). |
|
|
405 | |
|
|
406 | # bourne shell |
|
|
407 | staticperl mkbundle --use '"Config_heavy.pl"' |
|
|
408 | |
|
|
409 | # bundle specification file |
|
|
410 | use "Config_heavy.pl" |
|
|
411 | |
|
|
412 | The C<-M>module syntax is included as a convenience that might be easier |
|
|
413 | to remember than C<--use> - it's the same switch as perl itself uses |
|
|
414 | to load modules. Or maybe it confuses people. Time will tell. Or maybe |
|
|
415 | not. Sigh. |
|
|
416 | |
|
|
417 | =item C<--eval> "perl code" | C<-e> "perl code" |
|
|
418 | |
|
|
419 | Sometimes it is easier (or necessary) to specify dependencies using perl |
|
|
420 | code, or maybe one of the modules you use need a special use statement. In |
|
|
421 | that case, you can use C<--eval> to execute some perl snippet or set some |
|
|
422 | variables or whatever you need. All files C<require>'d or C<use>'d while |
|
|
423 | executing the snippet are included in the final bundle. |
|
|
424 | |
|
|
425 | Keep in mind that F<mkbundle> will only C<require> the modules named |
|
|
426 | by the C<--use> option, so do not expect the symbols from modules you |
|
|
427 | C<--use>'d earlier on the command line to be available. |
|
|
428 | |
|
|
429 | Example: force L<AnyEvent> to detect a backend and therefore include it |
|
|
430 | in the final bundle. |
|
|
431 | |
|
|
432 | staticperl mkbundle --eval 'use AnyEvent; AnyEvent::detect' |
|
|
433 | |
|
|
434 | # or like this |
|
|
435 | staticperl mkbundle -MAnyEvent --eval 'AnyEvent::detect' |
|
|
436 | |
|
|
437 | Example: use a separate "bootstrap" script that C<use>'s lots of modules |
|
|
438 | and also include this in the final bundle, to be executed automatically |
|
|
439 | when the interpreter is initialised. |
|
|
440 | |
|
|
441 | staticperl mkbundle --eval 'do "bootstrap"' --boot bootstrap |
|
|
442 | |
|
|
443 | =item C<--boot> F<filename> |
|
|
444 | |
|
|
445 | Include the given file in the bundle and arrange for it to be |
|
|
446 | executed (using C<require>) before the main program when the new perl |
|
|
447 | is initialised. This can be used to modify C<@INC> or do similar |
|
|
448 | modifications before the perl interpreter executes scripts given on the |
|
|
449 | command line (or via C<-e>). This works even in an embedded interpreter - |
|
|
450 | the file will be executed during interpreter initialisation in that case. |
|
|
451 | |
|
|
452 | =item C<--incglob> pattern |
|
|
453 | |
|
|
454 | This goes through all standard library directories and tries to match any |
|
|
455 | F<.pm> and F<.pl> files against the extended glob pattern (see below). If |
|
|
456 | a file matches, it is added. The pattern is matched against the full path |
|
|
457 | of the file (sans the library directory prefix), e.g. F<Sys/Syslog.pm>. |
|
|
458 | |
|
|
459 | This is very useful to include "everything": |
|
|
460 | |
|
|
461 | --incglob '*' |
|
|
462 | |
|
|
463 | It is also useful for including perl libraries, or trees of those, such as |
|
|
464 | the unicode database files needed by some perl built-ins, the regex engine |
|
|
465 | and other modules. |
|
|
466 | |
|
|
467 | --incglob '/unicore/**.pl' |
|
|
468 | |
|
|
469 | =item C<--add> F<file> | C<--add> "F<file> alias" |
|
|
470 | |
|
|
471 | Adds the given (perl) file into the bundle (and optionally call it |
|
|
472 | "alias"). The F<file> is either an absolute path or a path relative to |
|
|
473 | the current directory. If an alias is specified, then this is the name it |
|
|
474 | will use for C<@INC> searches, otherwise the F<file> will be used as the |
|
|
475 | internal name. |
|
|
476 | |
|
|
477 | This switch is used to include extra files into the bundle. |
|
|
478 | |
|
|
479 | Example: embed the file F<httpd> in the current directory as F<httpd.pm> |
|
|
480 | when creating the bundle. |
|
|
481 | |
|
|
482 | staticperl mkperl --add "httpd httpd.pm" |
|
|
483 | |
|
|
484 | Example: add local files as extra modules in the bundle. |
|
|
485 | |
|
|
486 | # specification file |
|
|
487 | add file1 myfiles/file1.pm |
|
|
488 | add file2 myfiles/file2.pm |
|
|
489 | add file3 myfiles/file3.pl |
|
|
490 | |
|
|
491 | # then later, in perl, use |
|
|
492 | use myfiles::file1; |
|
|
493 | require myfiles::file2; |
|
|
494 | my $res = do "myfiles/file3.pl"; |
|
|
495 | |
|
|
496 | =item C<--binadd> F<file> | C<--add> "F<file> alias" |
|
|
497 | |
|
|
498 | Just like C<--add>, except that it treats the file as binary and adds it |
|
|
499 | without any postprocessing (perl files might get stripped to reduce their |
|
|
500 | size). |
|
|
501 | |
|
|
502 | You should probably add a C</> prefix to avoid clashing with embedded perl |
|
|
503 | files (whose paths do not start with C</>), and/or use a special directory |
|
|
504 | prefix, such as C</res/name>. |
|
|
505 | |
|
|
506 | You can later get a copy of these files by calling C<staticperl::find |
|
|
507 | "alias">. |
|
|
508 | |
|
|
509 | An alternative way to embed binary files is to convert them to perl and |
|
|
510 | use C<do> to get the contents - this method is a bit cumbersome, but works |
|
|
511 | both inside and outside of a staticperl bundle: |
|
|
512 | |
|
|
513 | # a "binary" file, call it "bindata.pl" |
|
|
514 | <<'SOME_MARKER' |
|
|
515 | binary data NOT containing SOME_MARKER |
|
|
516 | SOME_MARKER |
|
|
517 | |
|
|
518 | # load the binary |
|
|
519 | chomp (my $data = do "bindata.pl"); |
|
|
520 | |
|
|
521 | =back |
|
|
522 | |
|
|
523 | =item Step 2: filter all files using C<--include> and C<--exclude> options. |
|
|
524 | |
|
|
525 | After all candidate files and modules are added, they are I<filtered> |
|
|
526 | by a combination of C<--include> and C<--exclude> patterns (there is an |
|
|
527 | implicit C<--include *> at the end, so if no filters are specified, all |
|
|
528 | files are included). |
|
|
529 | |
|
|
530 | All that this step does is potentially reduce the number of files that are |
|
|
531 | to be included - no new files are added during this step. |
|
|
532 | |
|
|
533 | =over 4 |
|
|
534 | |
|
|
535 | =item C<--include> pattern | C<-i> pattern | C<--exclude> pattern | C<-x> pattern |
|
|
536 | |
|
|
537 | These specify an include or exclude pattern to be applied to the candidate |
|
|
538 | file list. An include makes sure that the given files will be part of the |
|
|
539 | resulting file set, an exclude will exclude remaining files. The patterns |
|
|
540 | are "extended glob patterns" (see below). |
|
|
541 | |
|
|
542 | The patterns are applied "in order" - files included via earlier |
|
|
543 | C<--include> specifications cannot be removed by any following |
|
|
544 | C<--exclude>, and likewise, and file excluded by an earlier C<--exclude> |
|
|
545 | cannot be added by any following C<--include>. |
|
|
546 | |
|
|
547 | For example, to include everything except C<Devel> modules, but still |
|
|
548 | include F<Devel::PPPort>, you could use this: |
|
|
549 | |
|
|
550 | --incglob '*' -i '/Devel/PPPort.pm' -x '/Devel/**' |
|
|
551 | |
|
|
552 | =back |
|
|
553 | |
|
|
554 | =item Step 3: add any extra or "hidden" dependencies. |
|
|
555 | |
|
|
556 | F<staticperl> currently knows about three extra types of depdendencies |
|
|
557 | that are added automatically. Only one (F<.packlist> files) is currently |
|
|
558 | optional and can be influenced, the others are always included: |
|
|
559 | |
|
|
560 | =over 4 |
|
|
561 | |
|
|
562 | =item C<--usepacklists> |
|
|
563 | |
|
|
564 | Read F<.packlist> files for each distribution that happens to match a |
|
|
565 | module name you specified. Sounds weird, and it is, so expect semantics to |
|
|
566 | change somehow in the future. |
|
|
567 | |
|
|
568 | The idea is that most CPAN distributions have a F<.pm> file that matches |
|
|
569 | the name of the distribution (which is rather reasonable after all). |
|
|
570 | |
|
|
571 | If this switch is enabled, then if any of the F<.pm> files that have been |
|
|
572 | selected match an install distribution, then all F<.pm>, F<.pl>, F<.al> |
|
|
573 | and F<.ix> files installed by this distribution are also included. |
|
|
574 | |
|
|
575 | For example, using this switch, when the L<URI> module is specified, then |
|
|
576 | all L<URI> submodules that have been installed via the CPAN distribution |
|
|
577 | are included as well, so you don't have to manually specify them. |
|
|
578 | |
|
|
579 | =item L<AutoLoader> splitfiles |
|
|
580 | |
|
|
581 | Some modules use L<AutoLoader> - less commonly (hopefully) used functions |
|
|
582 | are split into separate F<.al> files, and an index (F<.ix>) file contains |
|
|
583 | the prototypes. |
|
|
584 | |
|
|
585 | Both F<.ix> and F<.al> files will be detected automatically and added to |
|
|
586 | the bundle. |
|
|
587 | |
|
|
588 | =item link libraries (F<.a> files) |
|
|
589 | |
|
|
590 | Modules using XS (or any other non-perl language extension compiled at |
|
|
591 | installation time) will have a static archive (typically F<.a>). These |
|
|
592 | will automatically be added to the linker options in F<bundle.ldopts>. |
|
|
593 | |
|
|
594 | Should F<staticperl> find a dynamic link library (typically F<.so>) it |
|
|
595 | will warn about it - obviously this shouldn't happen unless you use |
|
|
596 | F<staticperl> on the wrong perl, or one (probably wrongly) configured to |
|
|
597 | use dynamic loading. |
|
|
598 | |
|
|
599 | =item extra libraries (F<extralibs.ld>) |
|
|
600 | |
|
|
601 | Some modules need linking against external libraries - these are found in |
|
|
602 | F<extralibs.ld> and added to F<bundle.ldopts>. |
|
|
603 | |
|
|
604 | =back |
|
|
605 | |
|
|
606 | =item Step 4: write bundle files and optionally link a program |
|
|
607 | |
|
|
608 | At this point, the select files will be read, processed (stripped) and |
|
|
609 | finally the bundle files get written to disk, and F<staticperl mkbundle> |
|
|
610 | is normally finished. Optionally, it can go a step further and either link |
|
|
611 | a new F<perl> binary with all selected modules and files inside, or build |
|
|
612 | a standalone application. |
|
|
613 | |
|
|
614 | Both the contents of the bundle files and any extra linking is controlled |
|
|
615 | by these options: |
|
|
616 | |
|
|
617 | =over 4 |
|
|
618 | |
303 | =item --strip none|pod|ppi |
619 | =item C<--strip> C<none>|C<pod>|C<ppi> |
304 | |
620 | |
305 | Specify the stripping method applied to reduce the file of the perl |
621 | Specify the stripping method applied to reduce the file of the perl |
306 | sources included. |
622 | sources included. |
307 | |
623 | |
308 | The default is C<pod>, which uses the L<Pod::Strip> module to remove all |
624 | The default is C<pod>, which uses the L<Pod::Strip> module to remove all |
309 | pod documentation, which is very fast and reduces file size a lot. |
625 | pod documentation, which is very fast and reduces file size a lot. |
310 | |
626 | |
311 | The C<ppi> method uses L<PPI> to parse and condense the perl sources. This |
627 | The C<ppi> method uses L<PPI> to parse and condense the perl sources. This |
312 | saves a lot more than just L<Pod::Strip>, and is generally safer, but |
628 | saves a lot more than just L<Pod::Strip>, and is generally safer, |
313 | is also a lot slower, so is best used for production builds. Note that |
629 | but is also a lot slower (some files take almost a minute to strip - |
314 | this method doesn't optimise for raw file size, but for best compression |
630 | F<staticperl> maintains a cache of stripped files to speed up subsequent |
315 | (that means that the uncompressed file size is a bit larger, but the files |
631 | runs for this reason). Note that this method doesn't optimise for raw file |
316 | compress better, e.g. with F<upx>). |
632 | size, but for best compression (that means that the uncompressed file size |
|
|
633 | is a bit larger, but the files compress better, e.g. with F<upx>). |
317 | |
634 | |
318 | Last not least, if you need accurate line numbers in error messages, |
635 | Last not least, if you need accurate line numbers in error messages, |
319 | or in the unlikely case where C<pod> is too slow, or some module gets |
636 | or in the unlikely case where C<pod> is too slow, or some module gets |
320 | mistreated, you can specify C<none> to not mangle included perl sources in |
637 | mistreated, you can specify C<none> to not mangle included perl sources in |
321 | any way. |
638 | any way. |
322 | |
639 | |
323 | =item --perl |
640 | =item C<--perl> |
324 | |
641 | |
325 | After writing out the bundle files, try to link a new perl interpreter. It |
642 | After writing out the bundle files, try to link a new perl interpreter. It |
326 | will be called F<perl> and will be left in the current working |
643 | will be called F<perl> and will be left in the current working |
327 | directory. The bundle files will be removed. |
644 | directory. The bundle files will be removed. |
328 | |
645 | |
329 | This switch is automatically used when F<staticperl> is invoked with the |
646 | This switch is automatically used when F<staticperl> is invoked with the |
330 | C<mkperl> command (instead of C<mkbundle>): |
647 | C<mkperl> command instead of C<mkbundle>. |
331 | |
648 | |
332 | # build a new ./perl with only common::sense in it - very small :) |
649 | Example: build a new F<./perl> binary with only L<common::sense> inside - |
|
|
650 | it will be even smaller than the standard perl interpreter as none of the |
|
|
651 | modules of the base distribution (such as L<Fcntl>) will be included. |
|
|
652 | |
333 | staticperl mkperl -Mcommon::sense |
653 | staticperl mkperl -Mcommon::sense |
334 | |
654 | |
335 | =item --app name |
655 | =item C<--app> F<name> |
336 | |
656 | |
337 | After writing out the bundle files, try to link a new standalone |
657 | After writing out the bundle files, try to link a new standalone |
338 | program. It will be called C<name>, and the bundle files get removed after |
658 | program. It will be called C<name>, and the bundle files get removed after |
339 | linking it. |
659 | linking it. |
|
|
660 | |
|
|
661 | This switch is automatically used when F<staticperl> is invoked with the |
|
|
662 | C<mkapp> command instead of C<mkbundle>. |
340 | |
663 | |
341 | The difference to the (mutually exclusive) C<--perl> option is that the |
664 | The difference to the (mutually exclusive) C<--perl> option is that the |
342 | binary created by this option will not try to act as a perl interpreter - |
665 | binary created by this option will not try to act as a perl interpreter - |
343 | instead it will simply initialise the perl interpreter, clean it up and |
666 | instead it will simply initialise the perl interpreter, clean it up and |
344 | exit. |
667 | exit. |
345 | |
668 | |
346 | This switch is automatically used when F<staticperl> is invoked with the |
669 | This means that, by default, it will do nothing but burna few CPU cycles |
347 | C<mkapp> command (instead of C<mkbundle>): |
|
|
348 | |
|
|
349 | To let it do something useful you I<must> add some boot code, e.g. with |
670 | - for it to do something useful you I<must> add some boot code, e.g. with |
350 | the C<--boot> option. |
671 | the C<--boot> option. |
351 | |
672 | |
352 | Example: create a standalone perl binary that will execute F<appfile> when |
673 | Example: create a standalone perl binary called F<./myexe> that will |
353 | it is started. |
674 | execute F<appfile> when it is started. |
354 | |
675 | |
355 | staticperl mkbundle --app myexe --boot appfile |
676 | staticperl mkbundle --app myexe --boot appfile |
356 | |
677 | |
357 | =item --use module | -Mmodule |
|
|
358 | |
|
|
359 | Include the named module and all direct dependencies. This is done by |
|
|
360 | C<require>'ing the module in a subprocess and tracing which other modules |
|
|
361 | and files it actually loads. If the module uses L<AutoLoader>, then all |
|
|
362 | splitfiles will be included as well. |
|
|
363 | |
|
|
364 | Example: include AnyEvent and AnyEvent::Impl::Perl. |
|
|
365 | |
|
|
366 | staticperl mkbundle --use AnyEvent --use AnyEvent::Impl::Perl |
|
|
367 | |
|
|
368 | Sometimes you want to load old-style "perl libraries" (F<.pl> files), or |
|
|
369 | maybe other weirdly named files. To do that, you need to quote the name in |
|
|
370 | single or double quotes. When given on the command line, you probably need |
|
|
371 | to quote once more to avoid your shell interpreting it. Common cases that |
|
|
372 | need this are F<Config_heavy.pl> and F<utf8_heavy.pl>. |
|
|
373 | |
|
|
374 | Example: include the required files for F<perl -V> to work in all its |
|
|
375 | glory (F<Config.pm> is included automatically by this). |
|
|
376 | |
|
|
377 | # bourne shell |
|
|
378 | staticperl mkbundle --use '"Config_heavy.pl"' |
|
|
379 | |
|
|
380 | # bundle specification file |
|
|
381 | use "Config_heavy.pl" |
|
|
382 | |
|
|
383 | The C<-Mmodule> syntax is included as an alias that might be easier to |
|
|
384 | remember than C<use>. Or maybe it confuses people. Time will tell. Or |
|
|
385 | maybe not. Argh. |
|
|
386 | |
|
|
387 | =item --eval "perl code" | -e "perl code" |
|
|
388 | |
|
|
389 | Sometimes it is easier (or necessary) to specify dependencies using perl |
|
|
390 | code, or maybe one of the modules you use need a special use statement. In |
|
|
391 | that case, you can use C<eval> to execute some perl snippet or set some |
|
|
392 | variables or whatever you need. All files C<require>'d or C<use>'d in the |
|
|
393 | script are included in the final bundle. |
|
|
394 | |
|
|
395 | Keep in mind that F<mkbundle> will only C<require> the modules named |
|
|
396 | by the C<--use> option, so do not expect the symbols from modules you |
|
|
397 | C<--use>'d earlier on the command line to be available. |
|
|
398 | |
|
|
399 | Example: force L<AnyEvent> to detect a backend and therefore include it |
|
|
400 | in the final bundle. |
|
|
401 | |
|
|
402 | staticperl mkbundle --eval 'use AnyEvent; AnyEvent::detect' |
|
|
403 | |
|
|
404 | # or like this |
|
|
405 | staticperl mkbundle -MAnyEvent --eval 'use AnyEvent; AnyEvent::detect' |
|
|
406 | |
|
|
407 | Example: use a separate "bootstrap" script that C<use>'s lots of modules |
|
|
408 | and include this in the final bundle, to be executed automatically. |
|
|
409 | |
|
|
410 | staticperl mkbundle --eval 'do "bootstrap"' --boot bootstrap |
|
|
411 | |
|
|
412 | =item --boot filename |
|
|
413 | |
|
|
414 | Include the given file in the bundle and arrange for it to be executed |
|
|
415 | (using a C<require>) before anything else when the new perl is |
|
|
416 | initialised. This can be used to modify C<@INC> or anything else before |
|
|
417 | the perl interpreter executes scripts given on the command line (or via |
|
|
418 | C<-e>). This works even in an embedded interpreter. |
|
|
419 | |
|
|
420 | =item --add "file" | --add "file alias" |
|
|
421 | |
|
|
422 | Adds the given (perl) file into the bundle (and optionally call it |
|
|
423 | "alias"). This is useful to include any custom files into the bundle. |
|
|
424 | |
|
|
425 | Example: embed the file F<httpd> as F<httpd.pm> when creating the bundle. |
|
|
426 | |
|
|
427 | staticperl mkperl --add "httpd httpd.pm" |
|
|
428 | |
|
|
429 | It is also a great way to add any custom modules: |
|
|
430 | |
|
|
431 | # specification file |
|
|
432 | add file1 myfiles/file1 |
|
|
433 | add file2 myfiles/file2 |
|
|
434 | add file3 myfiles/file3 |
|
|
435 | |
|
|
436 | =item --binadd "file" | --add "file alias" |
|
|
437 | |
|
|
438 | Just like C<--add>, except that it treats the file as binary and adds it |
|
|
439 | without any processing. |
|
|
440 | |
|
|
441 | You should probably add a C</> prefix to avoid clashing with embedded |
|
|
442 | perl files (whose paths do not start with C</>), and/or use a special |
|
|
443 | directory, such as C</res/name>. |
|
|
444 | |
|
|
445 | You can later get a copy of these files by calling C<staticperl::find |
|
|
446 | "alias">. |
|
|
447 | |
|
|
448 | =item --static |
678 | =item C<--static> |
449 | |
679 | |
450 | When C<--perl> is also given, link statically instead of dynamically. The |
680 | Add C<-static> to F<bundle.ldopts>, which means a fully static (if |
|
|
681 | supported by the OS) executable will be created. This is not immensely |
|
|
682 | useful when just creating the bundle files, but is most useful when |
|
|
683 | linking a binary with the C<--perl> or C<--app> options. |
|
|
684 | |
451 | default is to link the new perl interpreter fully dynamic (that means all |
685 | The default is to link the new binary dynamically (that means all perl |
452 | perl modules are linked statically, but all external libraries are still |
686 | modules are linked statically, but all external libraries are still |
453 | referenced dynamically). |
687 | referenced dynamically). |
454 | |
688 | |
455 | Keep in mind that Solaris doesn't support static linking at all, and |
689 | Keep in mind that Solaris doesn't support static linking at all, and |
456 | systems based on GNU libc don't really support it in a usable fashion |
690 | systems based on GNU libc don't really support it in a very usable |
457 | either. Try uClibc if you want to create fully statically linked |
691 | fashion either. Try uClibc if you want to create fully statically linked |
458 | executables, or try the C<--staticlibs> option to link only some libraries |
692 | executables, or try the C<--staticlib> option to link only some libraries |
459 | statically. |
693 | statically. |
460 | |
694 | |
461 | =item any other argument |
695 | =item C<--staticlib> libname |
462 | |
696 | |
463 | Any other argument is interpreted as a bundle specification file, which |
697 | When not linking fully statically, this option allows you to link specific |
464 | supports most long options (without extra quoting), one option per line. |
698 | libraries statically. What it does is simply replace all occurrences of |
|
|
699 | C<-llibname> with the GCC-specific C<-Wl,-Bstatic -llibname -Wl,-Bdynamic> |
|
|
700 | option. |
|
|
701 | |
|
|
702 | This will have no effect unless the library is actually linked against, |
|
|
703 | specifically, C<--staticlib> will not link against the named library |
|
|
704 | unless it would be linked against anyway. |
|
|
705 | |
|
|
706 | Example: link libcrypt statically into the final binary. |
|
|
707 | |
|
|
708 | staticperl mkperl -MIO::AIO --staticlib crypt |
|
|
709 | |
|
|
710 | # ldopts might now contain: |
|
|
711 | # -lm -Wl,-Bstatic -lcrypt -Wl,-Bdynamic -lpthread |
|
|
712 | |
|
|
713 | =back |
|
|
714 | |
|
|
715 | =back |
|
|
716 | |
|
|
717 | =head3 EXTENDED GLOB PATTERNS |
|
|
718 | |
|
|
719 | Some options of F<staticperl mkbundle> expect an I<extended glob |
|
|
720 | pattern>. This is neither a normal shell glob nor a regex, but something |
|
|
721 | in between. The idea has been copied from rsync, and there are the current |
|
|
722 | matching rules: |
|
|
723 | |
|
|
724 | =over 4 |
|
|
725 | |
|
|
726 | =item Patterns starting with F</> will be a anchored at the root of the library tree. |
|
|
727 | |
|
|
728 | That is, F</unicore> will match the F<unicore> directory in C<@INC>, but |
|
|
729 | nothing inside, and neither any other file or directory called F<unicore> |
|
|
730 | anywhere else in the hierarchy. |
|
|
731 | |
|
|
732 | =item Patterns not starting with F</> will be anchored at the end of the path. |
|
|
733 | |
|
|
734 | That is, F<idna.pl> will match any file called F<idna.pl> anywhere in the |
|
|
735 | hierarchy, but not any directories of the same name. |
|
|
736 | |
|
|
737 | =item A F<*> matches anything within a single path component. |
|
|
738 | |
|
|
739 | That is, F</unicore/*.pl> would match all F<.pl> files directly inside |
|
|
740 | C</unicore>, not any deeper level F<.pl> files. Or in other words, F<*> |
|
|
741 | will not match slashes. |
|
|
742 | |
|
|
743 | =item A F<**> matches anything. |
|
|
744 | |
|
|
745 | That is, F</unicore/**.pl> would match all F<.pl> files under F</unicore>, |
|
|
746 | no matter how deeply nested they are inside subdirectories. |
|
|
747 | |
|
|
748 | =item A F<?> matches a single character within a component. |
|
|
749 | |
|
|
750 | That is, F</Encode/??.pm> matches F</Encode/JP.pm>, but not the |
|
|
751 | hypothetical F</Encode/J/.pm>, as F<?> does not match F</>. |
465 | |
752 | |
466 | =back |
753 | =back |
467 | |
754 | |
468 | =head2 F<STATICPERL> CONFIGURATION AND HOOKS |
755 | =head2 F<STATICPERL> CONFIGURATION AND HOOKS |
469 | |
756 | |
470 | During (each) startup, F<staticperl> tries to source the following shell |
757 | During (each) startup, F<staticperl> tries to source some shell files to |
|
|
758 | allow you to fine-tune/override configuration settings. |
|
|
759 | |
|
|
760 | In them you can override shell variables, or define shell functions |
|
|
761 | ("hooks") to be called at specific phases during installation. For |
|
|
762 | example, you could define a C<postinstall> hook to install additional |
|
|
763 | modules from CPAN each time you start from scratch. |
|
|
764 | |
|
|
765 | If the env variable C<$STATICPERLRC> is set, then F<staticperl> will try |
|
|
766 | to source the file named with it only. Otherwise, it tries the following |
471 | files in order: |
767 | shell files in order: |
472 | |
768 | |
473 | /etc/staticperlrc |
769 | /etc/staticperlrc |
474 | ~/.staticperlrc |
770 | ~/.staticperlrc |
475 | $STATICPERL/rc |
771 | $STATICPERL/rc |
476 | |
|
|
477 | They can be used to override shell variables, or define functions to be |
|
|
478 | called at specific phases. |
|
|
479 | |
772 | |
480 | Note that the last file is erased during F<staticperl distclean>, so |
773 | Note that the last file is erased during F<staticperl distclean>, so |
481 | generally should not be used. |
774 | generally should not be used. |
482 | |
775 | |
483 | =head3 CONFIGURATION VARIABLES |
776 | =head3 CONFIGURATION VARIABLES |
… | |
… | |
545 | |
838 | |
546 | More commonly, you would either activate 64 bit integer support |
839 | More commonly, you would either activate 64 bit integer support |
547 | (C<-Duse64bitint>), or disable large files support (-Uuselargefiles), to |
840 | (C<-Duse64bitint>), or disable large files support (-Uuselargefiles), to |
548 | reduce filesize further. |
841 | reduce filesize further. |
549 | |
842 | |
550 | =item C<PERL_CPPFLAGS>, C<PERL_OPTIMIZE>, C<PERL_LDFLAGS>, C<PERL_LIBS> |
843 | =item C<PERL_CC>, C<PERL_CCFLAGS>, C<PERL_OPTIMIZE>, C<PERL_LDFLAGS>, C<PERL_LIBS> |
551 | |
844 | |
552 | These flags are passed to perl's F<Configure> script, and are generally |
845 | These flags are passed to perl's F<Configure> script, and are generally |
553 | optimised for small size (at the cost of performance). Since they also |
846 | optimised for small size (at the cost of performance). Since they also |
554 | contain subtle workarounds around various build issues, changing these |
847 | contain subtle workarounds around various build issues, changing these |
555 | usually requires understanding their default values - best look at the top |
848 | usually requires understanding their default values - best look at |
556 | of the F<staticperl> script for more info on these. |
849 | the top of the F<staticperl> script for more info on these, and use a |
|
|
850 | F<~/.staticperlrc> to override them. |
|
|
851 | |
|
|
852 | Most of the variables override (or modify) the corresponding F<Configure> |
|
|
853 | variable, except C<PERL_CCFLAGS>, which gets appended. |
557 | |
854 | |
558 | =back |
855 | =back |
559 | |
856 | |
560 | =head4 Variables you probably I<do not want> to override |
857 | =head4 Variables you probably I<do not want> to override |
561 | |
858 | |
562 | =over 4 |
859 | =over 4 |
|
|
860 | |
|
|
861 | =item C<MAKE> |
|
|
862 | |
|
|
863 | The make command to use - default is C<make>. |
563 | |
864 | |
564 | =item C<MKBUNDLE> |
865 | =item C<MKBUNDLE> |
565 | |
866 | |
566 | Where F<staticperl> writes the C<mkbundle> command to |
867 | Where F<staticperl> writes the C<mkbundle> command to |
567 | (default: F<$STATICPERL/mkbundle>). |
868 | (default: F<$STATICPERL/mkbundle>). |
… | |
… | |
732 | |
1033 | |
733 | Returns the list of all paths embedded in this binary. |
1034 | Returns the list of all paths embedded in this binary. |
734 | |
1035 | |
735 | =back |
1036 | =back |
736 | |
1037 | |
737 | =head1 FULLY STATIC BINARIES - BUILDROOT |
1038 | =head1 FULLY STATIC BINARIES - UCLIBC AND BUILDROOT |
738 | |
1039 | |
739 | To make truly static (Linux-) libraries, you might want to have a look at |
1040 | To make truly static (Linux-) libraries, you might want to have a look at |
740 | buildroot (L<http://buildroot.uclibc.org/>). |
1041 | buildroot (L<http://buildroot.uclibc.org/>). |
741 | |
1042 | |
742 | Buildroot is primarily meant to set up a cross-compile environment (which |
1043 | Buildroot is primarily meant to set up a cross-compile environment (which |
… | |
… | |
801 | |
1102 | |
802 | =item utf8 |
1103 | =item utf8 |
803 | |
1104 | |
804 | Some functionality in the utf8 module, such as swash handling (used |
1105 | Some functionality in the utf8 module, such as swash handling (used |
805 | for unicode character ranges in regexes) is implemented in the |
1106 | for unicode character ranges in regexes) is implemented in the |
806 | C<"utf8_heavy.pl"> library. |
1107 | C<"utf8_heavy.pl"> library: |
|
|
1108 | |
|
|
1109 | -M'"utf8_heavy.pl"' |
807 | |
1110 | |
808 | Many Unicode properties in turn are defined in separate modules, |
1111 | Many Unicode properties in turn are defined in separate modules, |
809 | such as C<"unicore/Heavy.pl"> and more specific data tables such as |
1112 | such as C<"unicore/Heavy.pl"> and more specific data tables such as |
810 | C<"unicore/To/Digit.pl"> or C<"unicore/lib/Perl/Word.pl">. These |
1113 | C<"unicore/To/Digit.pl"> or C<"unicore/lib/Perl/Word.pl">. These tables |
811 | tables are big (7MB uncompressed), so including them on demand by your |
1114 | are big (7MB uncompressed, although F<staticperl> contains special |
|
|
1115 | handling for those files), so including them on demand by your application |
812 | applciation only might pay off. |
1116 | only might pay off. |
813 | |
1117 | |
814 | =item Carp |
1118 | To simply include the whole unicode database, use: |
815 | |
1119 | |
816 | Carp had (in older versions of perl) a dependency on L<Carp::Heavy>. As of |
1120 | --incglob '/unicore/*.pl' |
817 | perl 5.12.2 (maybe earlier), this dependency no longer exists. |
|
|
818 | |
|
|
819 | =item Config |
|
|
820 | |
|
|
821 | The F<perl -V> switch (as well as many modules) needs L<Config>, which in |
|
|
822 | turn might need L<"Config_heavy.pl">. Including the latter gives you |
|
|
823 | both. |
|
|
824 | |
1121 | |
825 | =item AnyEvent |
1122 | =item AnyEvent |
826 | |
1123 | |
827 | AnyEvent needs a backend implementation that it will load in a delayed |
1124 | AnyEvent needs a backend implementation that it will load in a delayed |
828 | fashion. The L<AnyEvent::Impl::Perl> backend is the default choice |
1125 | fashion. The L<AnyEvent::Impl::Perl> backend is the default choice |
… | |
… | |
833 | |
1130 | |
834 | If you want to handle IRIs or IDNs (L<AnyEvent::Util> punycode and idn |
1131 | If you want to handle IRIs or IDNs (L<AnyEvent::Util> punycode and idn |
835 | functions), you also need to include C<"AnyEvent/Util/idna.pl"> and |
1132 | functions), you also need to include C<"AnyEvent/Util/idna.pl"> and |
836 | C<"AnyEvent/Util/uts46data.pl">. |
1133 | C<"AnyEvent/Util/uts46data.pl">. |
837 | |
1134 | |
|
|
1135 | Or you can use C<--usepacklists> and specify C<-MAnyEvent> to include |
|
|
1136 | everything. |
|
|
1137 | |
|
|
1138 | =item Carp |
|
|
1139 | |
|
|
1140 | Carp had (in older versions of perl) a dependency on L<Carp::Heavy>. As of |
|
|
1141 | perl 5.12.2 (maybe earlier), this dependency no longer exists. |
|
|
1142 | |
|
|
1143 | =item Config |
|
|
1144 | |
|
|
1145 | The F<perl -V> switch (as well as many modules) needs L<Config>, which in |
|
|
1146 | turn might need L<"Config_heavy.pl">. Including the latter gives you |
|
|
1147 | both. |
|
|
1148 | |
|
|
1149 | =item Term::ReadLine::Perl |
|
|
1150 | |
|
|
1151 | Also needs L<Term::ReadLine::readline>, or C<--usepacklists>. |
|
|
1152 | |
838 | =item URI |
1153 | =item URI |
839 | |
1154 | |
840 | URI implements schemes as separate modules - the generic URL scheme is |
1155 | URI implements schemes as separate modules - the generic URL scheme is |
841 | implemented in L<URI::_generic>, HTTP is implemented in L<URI::http>. If |
1156 | implemented in L<URI::_generic>, HTTP is implemented in L<URI::http>. If |
842 | you need to use any of these schemes, you should include these manually. |
1157 | you need to use any of these schemes, you should include these manually, |
|
|
1158 | or use C<--usepacklists>. |
843 | |
1159 | |
844 | =back |
1160 | =back |
845 | |
1161 | |
846 | =head2 RECIPES |
1162 | =head2 RECIPES |
847 | |
1163 | |
848 | =over 4 |
1164 | =over 4 |
849 | |
1165 | |
|
|
1166 | =item Just link everything in |
|
|
1167 | |
|
|
1168 | To link just about everything installed in the perl library into a new |
|
|
1169 | perl, try this (the first time this runs it will take a long time, as a |
|
|
1170 | lot of files need to be parsed): |
|
|
1171 | |
|
|
1172 | staticperl mkperl -v --strip ppi --incglob '*' |
|
|
1173 | |
|
|
1174 | If you don't mind the extra megabytes, this can be a very effective way of |
|
|
1175 | creating bundles without having to worry about forgetting any modules. |
|
|
1176 | |
|
|
1177 | You get even more useful variants of this method by first selecting |
|
|
1178 | everything, and then excluding stuff you are reasonable sure not to need - |
|
|
1179 | L<bigperl|http://staticperl.schmorp.de/bigperl.html> uses this approach. |
|
|
1180 | |
850 | =item Getting rid of netdb function |
1181 | =item Getting rid of netdb functions |
851 | |
1182 | |
852 | The perl core has lots of netdb functions (C<getnetbyname>, C<getgrent> |
1183 | The perl core has lots of netdb functions (C<getnetbyname>, C<getgrent> |
853 | and so on) that few applications use. You can avoid compiling them in by |
1184 | and so on) that few applications use. You can avoid compiling them in by |
854 | putting the following fragment into a C<preconfigure> hook: |
1185 | putting the following fragment into a C<preconfigure> hook: |
855 | |
1186 | |
… | |
… | |
873 | PERL_CONFIGURE="$PERL_CONFIGURE -U$sym" |
1204 | PERL_CONFIGURE="$PERL_CONFIGURE -U$sym" |
874 | done |
1205 | done |
875 | } |
1206 | } |
876 | |
1207 | |
877 | This mostly gains space when linking staticaly, as the functions will |
1208 | This mostly gains space when linking staticaly, as the functions will |
878 | liekly not be linked in. The gain for dynamically-linked binaries is |
1209 | likely not be linked in. The gain for dynamically-linked binaries is |
879 | smaller. |
1210 | smaller. |
880 | |
1211 | |
881 | Also, this leaves C<gethostbyname> in - not only is it actually used |
1212 | Also, this leaves C<gethostbyname> in - not only is it actually used |
882 | often, the L<Socket> module also exposes it, so leaving it out usually |
1213 | often, the L<Socket> module also exposes it, so leaving it out usually |
883 | gains little. Why Socket exposes a C function that is in the core already |
1214 | gains little. Why Socket exposes a C function that is in the core already |