1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | staticperl - perl, libc, 50 modules all in one 500kb file |
3 | staticperl - perl, libc, 100 modules, all in one 500kb file |
4 | |
4 | |
5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | staticperl help # print the embedded documentation |
7 | staticperl help # print the embedded documentation |
8 | staticperl fetch # fetch and unpack perl sources |
8 | staticperl fetch # fetch and unpack perl sources |
… | |
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14 | staticperl cpan # invoke CPAN shell |
14 | staticperl cpan # invoke CPAN shell |
15 | staticperl instmod path... # install unpacked modules |
15 | staticperl instmod path... # install unpacked modules |
16 | staticperl instcpan modulename... # install modules from CPAN |
16 | staticperl instcpan modulename... # install modules from CPAN |
17 | staticperl mkbundle <bundle-args...> # see documentation |
17 | staticperl mkbundle <bundle-args...> # see documentation |
18 | staticperl mkperl <bundle-args...> # see documentation |
18 | staticperl mkperl <bundle-args...> # see documentation |
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19 | staticperl mkapp appname <bundle-args...> # see documentation |
19 | |
20 | |
20 | Typical Examples: |
21 | Typical Examples: |
21 | |
22 | |
22 | staticperl install # fetch, configure, build and install perl |
23 | staticperl install # fetch, configure, build and install perl |
23 | staticperl cpan # run interactive cpan shell |
24 | staticperl cpan # run interactive cpan shell |
24 | staticperl mkperl -M '"Config_heavy.pl"' # build a perl that supports -V |
25 | staticperl mkperl -M '"Config_heavy.pl"' # build a perl that supports -V |
25 | staticperl mkperl -MAnyEvent::Impl::Perl -MAnyEvent::HTTPD -MURI -MURI::http |
26 | staticperl mkperl -MAnyEvent::Impl::Perl -MAnyEvent::HTTPD -MURI -MURI::http |
26 | # build a perl with the above modules linked in |
27 | # build a perl with the above modules linked in |
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28 | staticperl mkapp myapp --boot mainprog mymodules |
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29 | # build a binary "myapp" from mainprog and mymodules |
27 | |
30 | |
28 | =head1 DESCRIPTION |
31 | =head1 DESCRIPTION |
29 | |
32 | |
30 | This script helps you creating single-file perl interpreters, or embedding |
33 | This script helps you to create single-file perl interpreters |
31 | a perl interpreter in your applications. Single-file means that it is |
34 | or applications, or embedding a perl interpreter in your |
32 | fully self-contained - no separate shared objects, no autoload fragments, |
35 | applications. Single-file means that it is fully self-contained - no |
33 | no .pm or .pl files are needed. And when linking statically, you can |
36 | separate shared objects, no autoload fragments, no .pm or .pl files are |
34 | create (or embed) a single file that contains perl interpreter, libc, all |
37 | needed. And when linking statically, you can create (or embed) a single |
35 | the modules you need and all the libraries you need. |
38 | file that contains perl interpreter, libc, all the modules you need, all |
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39 | the libraries you need and of course your actual program. |
36 | |
40 | |
37 | With F<uClibc> and F<upx> on x86, you can create a single 500kb binary that |
41 | With F<uClibc> and F<upx> on x86, you can create a single 500kb binary |
38 | contains perl and 50 modules such as AnyEvent, EV, IO::AIO, Coro and so |
42 | that contains perl and 100 modules such as POSIX, AnyEvent, EV, IO::AIO, |
39 | on. Or any other choice of modules. |
43 | Coro and so on. Or any other choice of modules. |
40 | |
44 | |
41 | The created files do not need write access to the file system (like PAR |
45 | The created files do not need write access to the file system (like PAR |
42 | does). In fact, since this script is in many ways similar to PAR::Packer, |
46 | does). In fact, since this script is in many ways similar to PAR::Packer, |
43 | here are the differences: |
47 | here are the differences: |
44 | |
48 | |
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81 | Maintaining your own custom perl build can be a pain in the ass, and while |
85 | Maintaining your own custom perl build can be a pain in the ass, and while |
82 | F<staticperl> tries to make this easy, it still requires a custom perl |
86 | F<staticperl> tries to make this easy, it still requires a custom perl |
83 | build and possibly fiddling with some modules. PAR is likely to produce |
87 | build and possibly fiddling with some modules. PAR is likely to produce |
84 | results faster. |
88 | results faster. |
85 | |
89 | |
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90 | Ok, PAR never has worked for me out of the box, and for some people, |
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91 | F<staticperl> does work out of the box, as they don't count "fiddling with |
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92 | module use lists" against it, but nevertheless, F<staticperl> is certainly |
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93 | a bit more difficult to use. |
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94 | |
86 | =back |
95 | =back |
87 | |
96 | |
88 | =head1 HOW DOES IT WORK? |
97 | =head1 HOW DOES IT WORK? |
89 | |
98 | |
90 | Simple: F<staticperl> downloads, compile and installs a perl version of |
99 | Simple: F<staticperl> downloads, compile and installs a perl version of |
… | |
… | |
184 | command by specifying all the directories with modules in them that you |
193 | command by specifying all the directories with modules in them that you |
185 | want to have built. |
194 | want to have built. |
186 | |
195 | |
187 | =item F<staticperl clean> |
196 | =item F<staticperl clean> |
188 | |
197 | |
189 | Runs F<make distclean> in the perl source directory (and potentially |
198 | Deletes the perl source directory (and potentially cleans up other |
190 | cleans up other intermediate files). This can be used to clean up |
199 | intermediate files). This can be used to clean up files only needed for |
191 | intermediate files without removing the installed perl interpreter. |
200 | building perl, without removing the installed perl interpreter, or to |
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201 | force a re-build from scratch. |
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202 | |
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203 | At the moment, it doesn't delete downloaded tarballs. |
192 | |
204 | |
193 | =item F<staticperl distclean> |
205 | =item F<staticperl distclean> |
194 | |
206 | |
195 | This wipes your complete F<~/.staticperl> directory. Be careful with this, |
207 | This wipes your complete F<~/.staticperl> directory. Be careful with this, |
196 | it nukes your perl download, perl sources, perl distribution and any |
208 | it nukes your perl download, perl sources, perl distribution and any |
… | |
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236 | (required by L<AnyEvent::HTTPD>) implements various URI schemes as extra |
248 | (required by L<AnyEvent::HTTPD>) implements various URI schemes as extra |
237 | modules - since L<AnyEvent::HTTPD> only needs C<http> URIs, we only need |
249 | modules - since L<AnyEvent::HTTPD> only needs C<http> URIs, we only need |
238 | to include that module. I found out about these dependencies by carefully |
250 | to include that module. I found out about these dependencies by carefully |
239 | watching any error messages about missing modules... |
251 | watching any error messages about missing modules... |
240 | |
252 | |
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253 | Instead of building a new perl binary, you can also build a standalone |
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254 | application: |
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255 | |
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256 | # build the app |
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257 | staticperl mkapp app --boot eg/httpd \ |
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258 | -MAnyEvent::Impl::Perl -MAnyEvent::HTTPD -MURI::http |
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259 | |
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260 | # run it |
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261 | ./app |
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262 | |
241 | =head3 OPTION PROCESSING |
263 | =head3 OPTION PROCESSING |
242 | |
264 | |
243 | All options can be given as arguments on the command line (typically |
265 | All options can be given as arguments on the command line (typically |
244 | using long (e.g. C<--verbose>) or short option (e.g. C<-v>) style). Since |
266 | using long (e.g. C<--verbose>) or short option (e.g. C<-v>) style). Since |
245 | specifying a lot of modules can make the command line very cumbersome, |
267 | specifying a lot of modules can make the command line very cumbersome, |
… | |
… | |
287 | is also a lot slower, so is best used for production builds. Note that |
309 | is also a lot slower, so is best used for production builds. Note that |
288 | this method doesn't optimise for raw file size, but for best compression |
310 | this method doesn't optimise for raw file size, but for best compression |
289 | (that means that the uncompressed file size is a bit larger, but the files |
311 | (that means that the uncompressed file size is a bit larger, but the files |
290 | compress better, e.g. with F<upx>). |
312 | compress better, e.g. with F<upx>). |
291 | |
313 | |
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314 | Last not least, if you need accurate line numbers in error messages, |
292 | Last not least, in the unlikely case where C<pod> is too slow, or some |
315 | or in the unlikely case where C<pod> is too slow, or some module gets |
293 | module gets mistreated, you can specify C<none> to not mangle included |
316 | mistreated, you can specify C<none> to not mangle included perl sources in |
294 | perl sources in any way. |
317 | any way. |
295 | |
318 | |
296 | =item --perl |
319 | =item --perl |
297 | |
320 | |
298 | After writing out the bundle files, try to link a new perl interpreter. It |
321 | After writing out the bundle files, try to link a new perl interpreter. It |
299 | will be called F<perl> and will be left in the current working |
322 | will be called F<perl> and will be left in the current working |
… | |
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302 | This switch is automatically used when F<staticperl> is invoked with the |
325 | This switch is automatically used when F<staticperl> is invoked with the |
303 | C<mkperl> command (instead of C<mkbundle>): |
326 | C<mkperl> command (instead of C<mkbundle>): |
304 | |
327 | |
305 | # build a new ./perl with only common::sense in it - very small :) |
328 | # build a new ./perl with only common::sense in it - very small :) |
306 | staticperl mkperl -Mcommon::sense |
329 | staticperl mkperl -Mcommon::sense |
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330 | |
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331 | =item --app name |
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332 | |
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333 | After writing out the bundle files, try to link a new standalone |
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334 | program. It will be called C<name>, and the bundle files get removed after |
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335 | linking it. |
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336 | |
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337 | The difference to the (mutually exclusive) C<--perl> option is that the |
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338 | binary created by this option will not try to act as a perl interpreter - |
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339 | instead it will simply initialise the perl interpreter, clean it up and |
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340 | exit. |
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341 | |
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342 | This switch is automatically used when F<staticperl> is invoked with the |
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343 | C<mkapp> command (instead of C<mkbundle>): |
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344 | |
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345 | To let it do something useful you I<must> add some boot code, e.g. with |
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346 | the C<--boot> option. |
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347 | |
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348 | Example: create a standalone perl binary that will execute F<appfile> when |
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349 | it is started. |
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350 | |
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351 | staticperl mkbundle --app myexe --boot appfile |
307 | |
352 | |
308 | =item --use module | -Mmodule |
353 | =item --use module | -Mmodule |
309 | |
354 | |
310 | Include the named module and all direct dependencies. This is done by |
355 | Include the named module and all direct dependencies. This is done by |
311 | C<require>'ing the module in a subprocess and tracing which other modules |
356 | C<require>'ing the module in a subprocess and tracing which other modules |
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382 | # specification file |
427 | # specification file |
383 | add file1 myfiles/file1 |
428 | add file1 myfiles/file1 |
384 | add file2 myfiles/file2 |
429 | add file2 myfiles/file2 |
385 | add file3 myfiles/file3 |
430 | add file3 myfiles/file3 |
386 | |
431 | |
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432 | =item --binadd "file" | --add "file alias" |
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433 | |
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434 | Just like C<--add>, except that it treats the file as binary and adds it |
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435 | without any processing. |
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436 | |
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437 | You should probably add a C</> prefix to avoid clashing with embedded |
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438 | perl files (whose paths do not start with C</>), and/or use a special |
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439 | directory, such as C</res/name>. |
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440 | |
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441 | You can later get a copy of these files by calling C<staticperl::find |
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442 | "alias">. |
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443 | |
387 | =item --static |
444 | =item --static |
388 | |
445 | |
389 | When C<--perl> is also given, link statically instead of dynamically. The |
446 | When C<--perl> is also given, link statically instead of dynamically. The |
390 | default is to link the new perl interpreter fully dynamic (that means all |
447 | default is to link the new perl interpreter fully dynamic (that means all |
391 | perl modules are linked statically, but all external libraries are still |
448 | perl modules are linked statically, but all external libraries are still |
… | |
… | |
402 | Any other argument is interpreted as a bundle specification file, which |
459 | Any other argument is interpreted as a bundle specification file, which |
403 | supports most long options (without extra quoting), one option per line. |
460 | supports most long options (without extra quoting), one option per line. |
404 | |
461 | |
405 | =back |
462 | =back |
406 | |
463 | |
407 | =head2 F<STATCPERL> CONFIGURATION AND HOOKS |
464 | =head2 F<STATICPERL> CONFIGURATION AND HOOKS |
408 | |
465 | |
409 | During (each) startup, F<staticperl> tries to source the following shell |
466 | During (each) startup, F<staticperl> tries to source the following shell |
410 | files in order: |
467 | files in order: |
411 | |
468 | |
412 | /etc/staticperlrc |
469 | /etc/staticperlrc |
… | |
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428 | =item C<EMAIL> |
485 | =item C<EMAIL> |
429 | |
486 | |
430 | The e-mail address of the person who built this binary. Has no good |
487 | The e-mail address of the person who built this binary. Has no good |
431 | default, so should be specified by you. |
488 | default, so should be specified by you. |
432 | |
489 | |
433 | =back |
490 | =item C<CPAN> |
434 | |
491 | |
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492 | The URL of the CPAN mirror to use (e.g. L<http://mirror.netcologne.de/cpan/>). |
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493 | |
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494 | =item C<EXTRA_MODULES> |
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495 | |
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496 | Additional modules installed during F<staticperl install>. Here you can |
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497 | set which modules you want have to installed from CPAN. |
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498 | |
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499 | Example: I really really need EV, AnyEvent, Coro and AnyEvent::AIO. |
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500 | |
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501 | EXTRA_MODULES="EV AnyEvent Coro AnyEvent::AIO" |
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502 | |
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503 | Note that you can also use a C<postinstall> hook to achieve this, and |
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504 | more. |
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505 | |
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506 | =back |
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507 | |
435 | =head4 Variables you I<might want> to override |
508 | =head4 Variables you might I<want> to override |
436 | |
509 | |
437 | =over 4 |
510 | =over 4 |
438 | |
511 | |
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512 | =item C<STATICPERL> |
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513 | |
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514 | The directory where staticperl stores all its files |
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515 | (default: F<~/.staticperl>). |
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516 | |
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517 | =item C<PERL_MM_USE_DEFAULT>, C<EV_EXTRA_DEFS>, ... |
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518 | |
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519 | Usually set to C<1> to make modules "less inquisitive" during their |
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520 | installation, you can set any environment variable you want - some modules |
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521 | (such as L<Coro> or L<EV>) use environment variables for further tweaking. |
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522 | |
439 | =item C<PERLVER> |
523 | =item C<PERL_VERSION> |
440 | |
524 | |
441 | The perl version to install - default is currently C<5.12.2>, but C<5.8.9> |
525 | The perl version to install - default is currently C<5.12.2>, but C<5.8.9> |
442 | is also a good choice (5.8.9 is much smaller than 5.12.2, while 5.10.1 is |
526 | is also a good choice (5.8.9 is much smaller than 5.12.2, while 5.10.1 is |
443 | about as big as 5.12.2). |
527 | about as big as 5.12.2). |
444 | |
528 | |
445 | =item C<CPAN> |
529 | =item C<PERL_PREFIX> |
446 | |
530 | |
447 | The URL of the CPAN mirror to use (e.g. L<http://mirror.netcologne.de/cpan/>). |
531 | The prefix where perl gets installed (default: F<$STATICPERL/perl>), |
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532 | i.e. where the F<bin> and F<lib> subdirectories will end up. |
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533 | |
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534 | =item C<PERL_CONFIGURE> |
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535 | |
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536 | Additional Configure options - these are simply passed to the perl |
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537 | Configure script. For example, if you wanted to enable dynamic loading, |
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538 | you could pass C<-Dusedl>. To enable ithreads (Why would you want that |
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539 | insanity? Don't! Use L<forks> instead!) you would pass C<-Duseithreads> |
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540 | and so on. |
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541 | |
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542 | More commonly, you would either activate 64 bit integer support |
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543 | (C<-Duse64bitint>), or disable large files support (-Uuselargefiles), to |
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544 | reduce filesize further. |
448 | |
545 | |
449 | =item C<PERL_CPPFLAGS>, C<PERL_OPTIMIZE>, C<PERL_LDFLAGS>, C<PERL_LIBS> |
546 | =item C<PERL_CPPFLAGS>, C<PERL_OPTIMIZE>, C<PERL_LDFLAGS>, C<PERL_LIBS> |
450 | |
547 | |
451 | These flags are passed to perl's F<Configure> script, and are generally |
548 | These flags are passed to perl's F<Configure> script, and are generally |
452 | optimised for small size (at the cost of performance). Since they also |
549 | optimised for small size (at the cost of performance). Since they also |
453 | contain subtle workarounds around various build issues, changing these |
550 | contain subtle workarounds around various build issues, changing these |
454 | usually requires understanding their default values - best look at the top |
551 | usually requires understanding their default values - best look at the top |
455 | of the F<staticperl> script for more info on these. |
552 | of the F<staticperl> script for more info on these. |
456 | |
553 | |
457 | =item C<STATICPERL> |
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458 | |
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459 | The directory where staticperl stores all its files |
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460 | (default: F<~/.staticperl>). |
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461 | |
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462 | =item C<PREFIX> |
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463 | |
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464 | The prefix where perl gets installed (default: F<$STATICPERL/perl>), |
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465 | i.e. where the F<bin> and F<lib> subdirectories will end up. |
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466 | |
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467 | =item C<PERL_MM_USE_DEFAULT>, C<EV_EXTRA_DEFS>, others |
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468 | |
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469 | Usually set to C<1> to make modules "less inquisitive" during their |
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470 | installation, you can set any environment variable you want - some modules |
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471 | (such as L<Coro> or L<EV>) use environment variables for further tweaking. |
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472 | |
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473 | =item C<EXTRA_MODULES> |
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474 | |
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475 | Additional modules installed during F<staticperl install>. Here you can |
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476 | set which modules you want have to installed from CPAN. |
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477 | |
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478 | Example: I really really need EV, AnyEvent, Coro and IO::AIO. |
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479 | |
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480 | EXTRA_MODULES="EV AnyEvent Coro IO::AIO" |
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481 | |
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482 | Note that you can also use a C<postinstall> hook to achieve this, and |
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483 | more. |
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484 | |
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485 | =back |
554 | =back |
486 | |
555 | |
487 | =head4 Variables you I<probably do not want> to override |
556 | =head4 Variables you probably I<do not want> to override |
488 | |
557 | |
489 | =over 4 |
558 | =over 4 |
490 | |
559 | |
491 | =item C<MKBUNDLE> |
560 | =item C<MKBUNDLE> |
492 | |
561 | |
… | |
… | |
508 | |
577 | |
509 | Example: install extra modules from CPAN and from some directories |
578 | Example: install extra modules from CPAN and from some directories |
510 | at F<staticperl install> time. |
579 | at F<staticperl install> time. |
511 | |
580 | |
512 | postinstall() { |
581 | postinstall() { |
513 | rm -rf lib/threads.* # weg mit Schaden |
582 | rm -rf lib/threads* # weg mit Schaden |
514 | instcpan IO::AIO EV |
583 | instcpan IO::AIO EV |
515 | instsrc ~/src/AnyEvent |
584 | instsrc ~/src/AnyEvent |
516 | instsrc ~/src/XML-Sablotron-1.0100001 |
585 | instsrc ~/src/XML-Sablotron-1.0100001 |
517 | instcpan AnyEvent::HTTPD |
586 | instcpan Anyevent::AIO AnyEvent::HTTPD |
518 | } |
587 | } |
519 | |
588 | |
520 | =over 4 |
589 | =over 4 |
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590 | |
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591 | =item preconfigure |
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592 | |
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593 | Called just before running F<./Configur> in the perl source |
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594 | directory. Current working directory is the perl source directory. |
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595 | |
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596 | This can be used to set any C<PERL_xxx> variables, which might be costly |
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597 | to compute. |
521 | |
598 | |
522 | =item postconfigure |
599 | =item postconfigure |
523 | |
600 | |
524 | Called after configuring, but before building perl. Current working |
601 | Called after configuring, but before building perl. Current working |
525 | directory is the perl source directory. |
602 | directory is the perl source directory. |
526 | |
603 | |
527 | Could be used to tailor/patch config.sh (followed by F<./Configure -S>) or |
604 | Could be used to tailor/patch config.sh (followed by F<sh Configure -S>) |
528 | do any other modifications. |
605 | or do any other modifications. |
529 | |
606 | |
530 | =item postbuild |
607 | =item postbuild |
531 | |
608 | |
532 | Called after building, but before installing perl. Current working |
609 | Called after building, but before installing perl. Current working |
533 | directory is the perl source directory. |
610 | directory is the perl source directory. |
… | |
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548 | The script must return with a zero exit status, or the installation will |
625 | The script must return with a zero exit status, or the installation will |
549 | fail. |
626 | fail. |
550 | |
627 | |
551 | =back |
628 | =back |
552 | |
629 | |
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630 | =head1 ANATOMY OF A BUNDLE |
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631 | |
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632 | When not building a new perl binary, C<mkbundle> will leave a number of |
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633 | files in the current working directory, which can be used to embed a perl |
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634 | interpreter in your program. |
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635 | |
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636 | Intimate knowledge of L<perlembed> and preferably some experience with |
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637 | embedding perl is highly recommended. |
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638 | |
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639 | C<mkperl> (or the C<--perl> option) basically does this to link the new |
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640 | interpreter (it also adds a main program to F<bundle.>): |
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641 | |
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642 | $Config{cc} $(cat bundle.ccopts) -o perl bundle.c $(cat bundle.ldopts) |
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643 | |
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644 | =over 4 |
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645 | |
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646 | =item bundle.h |
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647 | |
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648 | A header file that contains the prototypes of the few symbols "exported" |
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649 | by bundle.c, and also exposes the perl headers to the application. |
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650 | |
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651 | =over 4 |
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652 | |
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653 | =item staticperl_init () |
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654 | |
|
|
655 | Initialises the perl interpreter. You can use the normal perl functions |
|
|
656 | after calling this function, for example, to define extra functions or |
|
|
657 | to load a .pm file that contains some initialisation code, or the main |
|
|
658 | program function: |
|
|
659 | |
|
|
660 | XS (xsfunction) |
|
|
661 | { |
|
|
662 | dXSARGS; |
|
|
663 | |
|
|
664 | // now we have items, ST(i) etc. |
|
|
665 | } |
|
|
666 | |
|
|
667 | static void |
|
|
668 | run_myapp(void) |
|
|
669 | { |
|
|
670 | staticperl_init (); |
|
|
671 | newXSproto ("myapp::xsfunction", xsfunction, __FILE__, "$$;$"); |
|
|
672 | eval_pv ("require myapp::main", 1); // executes "myapp/main.pm" |
|
|
673 | } |
|
|
674 | |
|
|
675 | =item staticperl_xs_init (pTHX) |
|
|
676 | |
|
|
677 | Sometimes you need direct control over C<perl_parse> and C<perl_run>, in |
|
|
678 | which case you do not want to use C<staticperl_init> but call them on your |
|
|
679 | own. |
|
|
680 | |
|
|
681 | Then you need this function - either pass it directly as the C<xs_init> |
|
|
682 | function to C<perl_parse>, or call it from your own C<xs_init> function. |
|
|
683 | |
|
|
684 | =item staticperl_cleanup () |
|
|
685 | |
|
|
686 | In the unlikely case that you want to destroy the perl interpreter, here |
|
|
687 | is the corresponding function. |
|
|
688 | |
|
|
689 | =item PerlInterpreter *staticperl |
|
|
690 | |
|
|
691 | The perl interpreter pointer used by staticperl. Not normally so useful, |
|
|
692 | but there it is. |
|
|
693 | |
|
|
694 | =back |
|
|
695 | |
|
|
696 | =item bundle.ccopts |
|
|
697 | |
|
|
698 | Contains the compiler options required to compile at least F<bundle.c> and |
|
|
699 | any file that includes F<bundle.h> - you should probably use it in your |
|
|
700 | C<CFLAGS>. |
|
|
701 | |
|
|
702 | =item bundle.ldopts |
|
|
703 | |
|
|
704 | The linker options needed to link the final program. |
|
|
705 | |
|
|
706 | =back |
|
|
707 | |
|
|
708 | =head1 RUNTIME FUNCTIONALITY |
|
|
709 | |
|
|
710 | Binaries created with C<mkbundle>/C<mkperl> contain extra functions, which |
|
|
711 | are required to access the bundled perl sources, but might be useful for |
|
|
712 | other purposes. |
|
|
713 | |
|
|
714 | In addition, for the embedded loading of perl files to work, F<staticperl> |
|
|
715 | overrides the C<@INC> array. |
|
|
716 | |
|
|
717 | =over 4 |
|
|
718 | |
|
|
719 | =item $file = staticperl::find $path |
|
|
720 | |
|
|
721 | Returns the data associated with the given C<$path> |
|
|
722 | (e.g. C<Digest/MD5.pm>, C<auto/POSIX/autosplit.ix>), which is basically |
|
|
723 | the UNIX path relative to the perl library directory. |
|
|
724 | |
|
|
725 | Returns C<undef> if the file isn't embedded. |
|
|
726 | |
|
|
727 | =item @paths = staticperl::list |
|
|
728 | |
|
|
729 | Returns the list of all paths embedded in this binary. |
|
|
730 | |
|
|
731 | =back |
|
|
732 | |
|
|
733 | =head1 FULLY STATIC BINARIES - BUILDROOT |
|
|
734 | |
|
|
735 | To make truly static (Linux-) libraries, you might want to have a look at |
|
|
736 | buildroot (L<http://buildroot.uclibc.org/>). |
|
|
737 | |
|
|
738 | Buildroot is primarily meant to set up a cross-compile environment (which |
|
|
739 | is not so useful as perl doesn't quite like cross compiles), but it can also compile |
|
|
740 | a chroot environment where you can use F<staticperl>. |
|
|
741 | |
|
|
742 | To do so, download buildroot, and enable "Build options => development |
|
|
743 | files in target filesystem" and optionally "Build options => gcc |
|
|
744 | optimization level (optimize for size)". At the time of writing, I had |
|
|
745 | good experiences with GCC 4.4.x but not GCC 4.5. |
|
|
746 | |
|
|
747 | To minimise code size, I used C<-pipe -ffunction-sections -fdata-sections |
|
|
748 | -finline-limit=8 -fno-builtin-strlen -mtune=i386>. The C<-mtune=i386> |
|
|
749 | doesn't decrease codesize much, but it makes the file much more |
|
|
750 | compressible. |
|
|
751 | |
|
|
752 | If you don't need Coro or threads, you can go with "linuxthreads.old" (or |
|
|
753 | no thread support). For Coro, it is highly recommended to switch to a |
|
|
754 | uClibc newer than 0.9.31 (at the time of this writing, I used the 20101201 |
|
|
755 | snapshot) and enable NPTL, otherwise Coro needs to be configured with the |
|
|
756 | ultra-slow pthreads backend to work around linuxthreads bugs (it also uses |
|
|
757 | twice the address space needed for stacks). |
|
|
758 | |
|
|
759 | If you use C<linuxthreads.old>, then you should also be aware that |
|
|
760 | uClibc shares C<errno> between all threads when statically linking. See |
|
|
761 | L<http://lists.uclibc.org/pipermail/uclibc/2010-June/044157.html> for a |
|
|
762 | workaround (And L<https://bugs.uclibc.org/2089> for discussion). |
|
|
763 | |
|
|
764 | C<ccache> support is also recommended, especially if you want |
|
|
765 | to play around with buildroot options. Enabling the C<miniperl> |
|
|
766 | package will probably enable all options required for a successful |
|
|
767 | perl build. F<staticperl> itself additionally needs either C<wget> |
|
|
768 | (recommended, for CPAN) or C<curl>. |
|
|
769 | |
|
|
770 | As for shells, busybox should provide all that is needed, but the default |
|
|
771 | busybox configuration doesn't include F<comm> which is needed by perl - |
|
|
772 | either make a custom busybox config, or compile coreutils. |
|
|
773 | |
|
|
774 | For the latter route, you might find that bash has some bugs that keep |
|
|
775 | it from working properly in a chroot - either use dash (and link it to |
|
|
776 | F</bin/sh> inside the chroot) or link busybox to F</bin/sh>, using it's |
|
|
777 | built-in ash shell. |
|
|
778 | |
|
|
779 | Finally, you need F</dev/null> inside the chroot for many scripts to work |
|
|
780 | - F<cp /dev/null output/target/dev> or bind-mounting your F</dev> will |
|
|
781 | both provide this. |
|
|
782 | |
|
|
783 | After you have compiled and set up your buildroot target, you can copy |
|
|
784 | F<staticperl> from the C<App::Staticperl> distribution or from your |
|
|
785 | perl f<bin> directory (if you installed it) into the F<output/target> |
|
|
786 | filesystem, chroot inside and run it. |
|
|
787 | |
553 | =head1 AUTHOR |
788 | =head1 AUTHOR |
554 | |
789 | |
555 | Marc Lehmann <schmorp@schmorp.de> |
790 | Marc Lehmann <schmorp@schmorp.de> |
556 | http://software.schmorp.de/pkg/staticperl.html |
791 | http://software.schmorp.de/pkg/staticperl.html |