perldelta for 22831cc58b76.
[perl.git] / makedef.pl
1 #./perl -w
2 #
3 # Create the export list for perl.
4 #
5 # Needed by WIN32 and OS/2 for creating perl.dll,
6 # and by AIX for creating libperl.a when -Duseshrplib is in effect,
7 # and by VMS for creating perlshr.exe.
8 #
9 # Reads from information stored in
10 #
11 #    %Config::Config (ie config.sh)
12 #    config.h
13 #    embed.fnc
14 #    globvar.sym
15 #    intrpvar.h
16 #    miniperl.map (on OS/2)
17 #    perl5.def    (on OS/2; this is the old version of the file being made)
18 #    perlio.sym
19 #    perlvars.h
20 #    regen/opcodes
21 #
22 # plus long lists of function names hard-coded directly in this script.
23 #
24 # Writes the result to STDOUT.
25 #
26 # Normally this script is invoked from a makefile (e.g. win32/Makefile),
27 # which redirects STDOUT to a suitable file, such as:
28 #
29 #    perl5.def   OS/2
30 #    perldll.def Windows
31 #    perl.exp    AIX
32 #    perl.imp    NetWare
33 #    makedef.lis VMS
34
35 BEGIN { unshift @INC, "lib" }
36 use Config;
37 use strict;
38
39 my %ARGS = (CCTYPE => 'MSVC', TARG_DIR => '');
40
41 my %define;
42
43 my $fold;
44
45 sub process_cc_flags {
46     foreach (map {split /\s+/, $_} @_) {
47         $define{$1} = $2 // 1 if /^-D(\w+)(?:=(.+))?/;
48     }
49 }
50
51 while (@ARGV) {
52     my $flag = shift;
53     if ($flag =~ /^(?:CC_FLAGS=)?(-D\w.*)/) {
54         process_cc_flags($1);
55     } elsif ($flag =~ /^(CCTYPE|FILETYPE|PLATFORM|TARG_DIR)=(.+)$/) {
56         $ARGS{$1} = $2;
57     } elsif ($flag eq '--sort-fold') {
58         ++$fold;
59     }
60 }
61
62 require "$ARGS{TARG_DIR}regen/embed_lib.pl";
63
64 {
65     my @PLATFORM = qw(aix win32 wince os2 netware vms test);
66     my %PLATFORM;
67     @PLATFORM{@PLATFORM} = ();
68
69     die "PLATFORM undefined, must be one of: @PLATFORM\n"
70         unless defined $ARGS{PLATFORM};
71     die "PLATFORM must be one of: @PLATFORM\n"
72         unless exists $PLATFORM{$ARGS{PLATFORM}};
73 }
74
75 # Is the following guard strictly necessary? Added during refactoring
76 # to keep the same behaviour when merging other code into here.
77 process_cc_flags(@Config{qw(ccflags optimize)})
78     if $ARGS{PLATFORM} ne 'win32' && $ARGS{PLATFORM} ne 'wince'
79     && $ARGS{PLATFORM} ne 'netware';
80
81 # Add the compile-time options that miniperl was built with to %define.
82 # On Win32 these are not the same options as perl itself will be built
83 # with since miniperl is built with a canned config (one of the win32/
84 # config_H.*) and none of the BUILDOPT's that are set in the makefiles,
85 # but they do include some #define's that are hard-coded in various
86 # source files and header files and don't include any BUILDOPT's that
87 # the user might have chosen to disable because the canned configs are
88 # minimal configs that don't include any of those options.
89
90 my @options = sort(Config::bincompat_options(), Config::non_bincompat_options());
91 print STDERR "Options: (@options)\n" unless $ARGS{PLATFORM} eq 'test';
92 $define{$_} = 1 foreach @options;
93
94 my %exportperlmalloc =
95     (
96        Perl_malloc              =>      "malloc",
97        Perl_mfree               =>      "free",
98        Perl_realloc             =>      "realloc",
99        Perl_calloc              =>      "calloc",
100     );
101
102 my $exportperlmalloc = $ARGS{PLATFORM} eq 'os2';
103
104 open(CFG, '<', 'config.h') || die "Cannot open config.h: $!\n";
105 while (<CFG>) {
106     $define{$1} = 1 if /^\s*\#\s*define\s+(MYMALLOC|MULTIPLICITY
107                                            |SPRINTF_RETURNS_STRLEN
108                                            |(?:PERL|USE|HAS)_\w+)\b/x;
109 }
110 close(CFG);
111
112 # perl.h logic duplication begins
113
114 if ($define{USE_ITHREADS}) {
115     if (!$define{MULTIPLICITY}) {
116         $define{MULTIPLICITY} = 1;
117     }
118 }
119
120 $define{PERL_IMPLICIT_CONTEXT} ||=
121     $define{USE_ITHREADS} ||
122     $define{MULTIPLICITY} ;
123
124 if ($define{USE_ITHREADS} && $ARGS{PLATFORM} ne 'win32' && $^O ne 'darwin') {
125     $define{USE_REENTRANT_API} = 1;
126 }
127
128 # perl.h logic duplication ends
129
130 print STDERR "Defines: (" . join(' ', sort keys %define) . ")\n"
131      unless $ARGS{PLATFORM} eq 'test';
132
133 my $sym_ord = 0;
134 my %ordinal;
135
136 if ($ARGS{PLATFORM} eq 'os2') {
137     if (open my $fh, '<', 'perl5.def') {
138       while (<$fh>) {
139         last if /^\s*EXPORTS\b/;
140       }
141       while (<$fh>) {
142         $ordinal{$1} = $2 if /^\s*"(\w+)"\s*(?:=\s*"\w+"\s*)?\@(\d+)\s*$/;
143         # This allows skipping ordinals which were used in older versions
144         $sym_ord = $1 if /^\s*;\s*LAST_ORDINAL\s*=\s*(\d+)\s*$/;
145       }
146       $sym_ord < $_ and $sym_ord = $_ for values %ordinal; # Take the max
147     }
148 }
149
150 my %skip;
151 # All platforms export boot_DynaLoader unconditionally.
152 my %export = ( boot_DynaLoader => 1 );
153
154 sub try_symbols {
155     foreach my $symbol (@_) {
156         ++$export{$symbol} unless exists $skip{$symbol};
157     }
158 }
159
160 sub readvar {
161     # $hash is the hash that we're adding to. For one of our callers, it will
162     # actually be the skip hash but that doesn't affect the intent of what
163     # we're doing, as in that case we skip adding something to the skip hash
164     # for the second time.
165
166     my $file = $ARGS{TARG_DIR} . shift;
167     my $hash = shift;
168     my $proc = shift;
169     open my $vars, '<', $file or die die "Cannot open $file: $!\n";
170
171     while (<$vars>) {
172         # All symbols have a Perl_ prefix because that's what embed.h sticks
173         # in front of them.  The A?I?S?C? is strictly speaking wrong.
174         next unless /\bPERLVAR(A?I?S?C?)\(([IGT]),\s*(\w+)/;
175
176         my $var = "PL_$3";
177         my $symbol = $proc ? &$proc($1,$2,$3) : $var;
178         ++$hash->{$symbol} unless exists $skip{$var};
179     }
180 }
181
182 if ($ARGS{PLATFORM} ne 'os2') {
183     ++$skip{$_} foreach qw(
184                      PL_cryptseen
185                      PL_opsave
186                      Perl_GetVars
187                      Perl_dump_fds
188                      Perl_my_bcopy
189                      Perl_my_bzero
190                      Perl_my_chsize
191                      Perl_my_htonl
192                      Perl_my_memcmp
193                      Perl_my_memset
194                      Perl_my_ntohl
195                      Perl_my_swap
196                          );
197     if ($ARGS{PLATFORM} eq 'vms') {
198         ++$skip{PL_statusvalue_posix};
199         # This is a wrapper if we have symlink, not a replacement
200         # if we don't.
201         ++$skip{Perl_my_symlink} unless $Config{d_symlink};
202     } else {
203         ++$skip{PL_statusvalue_vms};
204         if ($ARGS{PLATFORM} ne 'aix') {
205             ++$skip{$_} foreach qw(
206                                 PL_DBcv
207                                 PL_generation
208                                 PL_lastgotoprobe
209                                 PL_modcount
210                                 PL_timesbuf
211                                 main
212                                  );
213         }
214     }
215 }
216
217 if ($ARGS{PLATFORM} ne 'vms') {
218     # VMS does its own thing for these symbols.
219     ++$skip{$_} foreach qw(
220                         PL_sig_handlers_initted
221                         PL_sig_ignoring
222                         PL_sig_defaulting
223                          );
224     if ($ARGS{PLATFORM} ne 'win32') {
225         ++$skip{$_} foreach qw(
226                             Perl_do_spawn
227                             Perl_do_spawn_nowait
228                             Perl_do_aspawn
229                              );
230     }
231 }
232
233 unless ($define{UNLINK_ALL_VERSIONS}) {
234     ++$skip{Perl_unlnk};
235 }
236
237 unless ($define{'DEBUGGING'}) {
238     ++$skip{$_} foreach qw(
239                     Perl_debop
240                     Perl_debprofdump
241                     Perl_debstack
242                     Perl_debstackptrs
243                     Perl_pad_sv
244                     Perl_pad_setsv
245                     Perl_hv_assert
246                     PL_watchaddr
247                     PL_watchok
248                     PL_watch_pvx
249                          );
250 }
251
252 if ($define{'PERL_IMPLICIT_SYS'}) {
253     ++$skip{$_} foreach qw(
254                     Perl_my_popen
255                     Perl_my_pclose
256                          );
257     ++$export{$_} foreach qw(perl_get_host_info perl_alloc_override);
258     ++$export{perl_clone_host} if $define{USE_ITHREADS};
259 }
260 else {
261     ++$skip{$_} foreach qw(
262                     PL_Mem
263                     PL_MemShared
264                     PL_MemParse
265                     PL_Env
266                     PL_StdIO
267                     PL_LIO
268                     PL_Dir
269                     PL_Sock
270                     PL_Proc
271                     perl_alloc_using
272                     perl_clone_using
273                          );
274 }
275
276 unless ($define{'PERL_OLD_COPY_ON_WRITE'}) {
277     ++$skip{Perl_sv_setsv_cow};
278 }
279
280 unless ($define{'USE_REENTRANT_API'}) {
281     ++$skip{PL_reentrant_buffer};
282 }
283
284 if ($define{'MYMALLOC'}) {
285     try_symbols(qw(
286                     Perl_dump_mstats
287                     Perl_get_mstats
288                     Perl_strdup
289                     Perl_putenv
290                     MallocCfg_ptr
291                     MallocCfgP_ptr
292                     ));
293     unless ($define{USE_ITHREADS}) {
294         ++$skip{PL_malloc_mutex}
295     }
296 }
297 else {
298     ++$skip{$_} foreach qw(
299                     PL_malloc_mutex
300                     Perl_dump_mstats
301                     Perl_get_mstats
302                     MallocCfg_ptr
303                     MallocCfgP_ptr
304                          );
305 }
306
307 if ($define{'PERL_USE_SAFE_PUTENV'}) {
308     ++$skip{PL_use_safe_putenv};
309 }
310
311 unless ($define{'USE_ITHREADS'}) {
312     ++$skip{PL_thr_key};
313 }
314
315 # USE_5005THREADS symbols. Kept as reference for easier removal
316 ++$skip{$_} foreach qw(
317                     PL_sv_mutex
318                     PL_strtab_mutex
319                     PL_svref_mutex
320                     PL_cred_mutex
321                     PL_eval_mutex
322                     PL_fdpid_mutex
323                     PL_sv_lock_mutex
324                     PL_eval_cond
325                     PL_eval_owner
326                     PL_threads_mutex
327                     PL_nthreads
328                     PL_nthreads_cond
329                     PL_threadnum
330                     PL_threadsv_names
331                     PL_thrsv
332                     PL_vtbl_mutex
333                     Perl_condpair_magic
334                     Perl_new_struct_thread
335                     Perl_per_thread_magicals
336                     Perl_thread_create
337                     Perl_find_threadsv
338                     Perl_unlock_condpair
339                     Perl_magic_mutexfree
340                     Perl_sv_lock
341                      );
342
343 unless ($define{'USE_ITHREADS'}) {
344     ++$skip{$_} foreach qw(
345                     PL_check_mutex
346                     PL_op_mutex
347                     PL_regex_pad
348                     PL_regex_padav
349                     PL_dollarzero_mutex
350                     PL_hints_mutex
351                     PL_my_ctx_mutex
352                     PL_perlio_mutex
353                     PL_stashpad
354                     PL_stashpadix
355                     PL_stashpadmax
356                     Perl_alloccopstash
357                     Perl_clone_params_del
358                     Perl_clone_params_new
359                     Perl_parser_dup
360                     Perl_dirp_dup
361                     Perl_cx_dup
362                     Perl_si_dup
363                     Perl_any_dup
364                     Perl_ss_dup
365                     Perl_fp_dup
366                     Perl_gp_dup
367                     Perl_he_dup
368                     Perl_mg_dup
369                     Perl_re_dup_guts
370                     Perl_sv_dup
371                     Perl_sv_dup_inc
372                     Perl_rvpv_dup
373                     Perl_hek_dup
374                     Perl_sys_intern_dup
375                     perl_clone
376                     perl_clone_using
377                     Perl_stashpv_hvname_match
378                     Perl_regdupe_internal
379                     Perl_newPADOP
380                          );
381 }
382
383 unless ($define{'PERL_IMPLICIT_CONTEXT'}) {
384     ++$skip{$_} foreach qw(
385                     PL_my_cxt_index
386                     PL_my_cxt_list
387                     PL_my_cxt_size
388                     PL_my_cxt_keys
389                     Perl_croak_nocontext
390                     Perl_die_nocontext
391                     Perl_deb_nocontext
392                     Perl_form_nocontext
393                     Perl_load_module_nocontext
394                     Perl_mess_nocontext
395                     Perl_warn_nocontext
396                     Perl_warner_nocontext
397                     Perl_newSVpvf_nocontext
398                     Perl_sv_catpvf_nocontext
399                     Perl_sv_setpvf_nocontext
400                     Perl_sv_catpvf_mg_nocontext
401                     Perl_sv_setpvf_mg_nocontext
402                     Perl_my_cxt_init
403                     Perl_my_cxt_index
404                          );
405 }
406
407 unless ($define{'PL_OP_SLAB_ALLOC'}) {
408     ++$skip{$_} foreach qw(
409                      PL_OpPtr
410                      PL_OpSlab
411                      PL_OpSpace
412                          );
413 }
414
415 unless ($define{'PERL_DEBUG_READONLY_OPS'}) {
416     ++$skip{$_} foreach qw(
417                     PL_slab_count
418                     PL_slabs
419                          );
420 }
421
422 unless ($define{'PERL_NEED_APPCTX'}) {
423     ++$skip{PL_appctx};
424 }
425
426 unless ($define{'PERL_NEED_TIMESBASE'}) {
427     ++$skip{PL_timesbase};
428 }
429
430 unless ($define{'DEBUG_LEAKING_SCALARS'}) {
431     ++$skip{PL_sv_serial};
432 }
433
434 unless ($define{'DEBUG_LEAKING_SCALARS_FORK_DUMP'}) {
435     ++$skip{PL_dumper_fd};
436 }
437
438 unless ($define{'PERL_DONT_CREATE_GVSV'}) {
439     ++$skip{Perl_gv_SVadd};
440 }
441
442 if ($define{'SPRINTF_RETURNS_STRLEN'}) {
443     ++$skip{Perl_my_sprintf};
444 }
445
446 unless ($define{'PERL_USES_PL_PIDSTATUS'}) {
447     ++$skip{PL_pidstatus};
448 }
449
450 unless ($define{'PERL_TRACK_MEMPOOL'}) {
451     ++$skip{PL_memory_debug_header};
452 }
453
454 unless ($define{PERL_MAD}) {
455     ++$skip{$_} foreach qw(
456                     PL_madskills
457                     PL_xmlfp
458                          );
459 }
460
461 unless ($define{'MULTIPLICITY'}) {
462     ++$skip{$_} foreach qw(
463                     PL_interp_size
464                     PL_interp_size_5_16_0
465                          );
466 }
467
468 unless ($define{'PERL_GLOBAL_STRUCT'}) {
469     ++$skip{PL_global_struct_size};
470 }
471
472 unless ($define{'PERL_GLOBAL_STRUCT_PRIVATE'}) {
473     ++$skip{$_} foreach qw(
474                     PL_my_cxt_keys
475                     Perl_my_cxt_index
476                          );
477 }
478
479 unless ($define{HAS_MMAP}) {
480     ++$skip{PL_mmap_page_size};
481 }
482
483 if ($define{HAS_SIGACTION}) {
484     ++$skip{PL_sig_trapped};
485
486     if ($ARGS{PLATFORM} eq 'vms') {
487         # FAKE_PERSISTENT_SIGNAL_HANDLERS defined as !defined(HAS_SIGACTION)
488         ++$skip{PL_sig_ignoring};
489     }
490 }
491
492 unless ($define{USE_LOCALE_COLLATE}) {
493     ++$skip{$_} foreach qw(
494                     PL_collation_ix
495                     PL_collation_name
496                     PL_collation_standard
497                     PL_collxfrm_base
498                     PL_collxfrm_mult
499                     Perl_sv_collxfrm
500                     Perl_sv_collxfrm_flags
501                          );
502 }
503
504 unless ($define{USE_LOCALE_NUMERIC}) {
505     ++$skip{$_} foreach qw(
506                     PL_numeric_local
507                     PL_numeric_name
508                     PL_numeric_radix_sv
509                     PL_numeric_standard
510                          );
511 }
512
513 unless ($define{HAVE_INTERP_INTERN}) {
514     ++$skip{$_} foreach qw(
515                     Perl_sys_intern_clear
516                     Perl_sys_intern_dup
517                     Perl_sys_intern_init
518                     PL_sys_intern
519                          );
520 }
521
522 if ($define{HAS_SIGNBIT}) {
523     ++$skip{Perl_signbit};
524 }
525
526 if ($define{'PERL_GLOBAL_STRUCT'}) {
527     readvar('perlvars.h', \%skip);
528     # This seems like the least ugly way to cope with the fact that PL_sh_path
529     # is mentioned in perlvar.h and globvar.sym, and always exported.
530     delete $skip{PL_sh_path};
531     ++$export{Perl_GetVars};
532     try_symbols(qw(PL_Vars PL_VarsPtr)) unless $ARGS{CCTYPE} eq 'GCC';
533 } else {
534     ++$skip{$_} foreach qw(Perl_init_global_struct Perl_free_global_struct);
535 }
536
537 # functions from *.sym files
538
539 my @syms = qw(globvar.sym);
540
541 # Symbols that are the public face of the PerlIO layers implementation
542 # These are in _addition to_ the public face of the abstraction
543 # and need to be exported to allow XS modules to implement layers
544 my @layer_syms = qw(
545                     PerlIOBase_binmode
546                     PerlIOBase_clearerr
547                     PerlIOBase_close
548                     PerlIOBase_dup
549                     PerlIOBase_eof
550                     PerlIOBase_error
551                     PerlIOBase_fileno
552                     PerlIOBase_open
553                     PerlIOBase_noop_fail
554                     PerlIOBase_noop_ok
555                     PerlIOBase_popped
556                     PerlIOBase_pushed
557                     PerlIOBase_read
558                     PerlIOBase_setlinebuf
559                     PerlIOBase_unread
560                     PerlIOBuf_bufsiz
561                     PerlIOBuf_close
562                     PerlIOBuf_dup
563                     PerlIOBuf_fill
564                     PerlIOBuf_flush
565                     PerlIOBuf_get_base
566                     PerlIOBuf_get_cnt
567                     PerlIOBuf_get_ptr
568                     PerlIOBuf_open
569                     PerlIOBuf_popped
570                     PerlIOBuf_pushed
571                     PerlIOBuf_read
572                     PerlIOBuf_seek
573                     PerlIOBuf_set_ptrcnt
574                     PerlIOBuf_tell
575                     PerlIOBuf_unread
576                     PerlIOBuf_write
577                     PerlIO_allocate
578                     PerlIO_apply_layera
579                     PerlIO_apply_layers
580                     PerlIO_arg_fetch
581                     PerlIO_debug
582                     PerlIO_define_layer
583                     PerlIO_find_layer
584                     PerlIO_isutf8
585                     PerlIO_layer_fetch
586                     PerlIO_list_alloc
587                     PerlIO_list_free
588                     PerlIO_modestr
589                     PerlIO_parse_layers
590                     PerlIO_pending
591                     PerlIO_perlio
592                     PerlIO_pop
593                     PerlIO_push
594                     PerlIO_sv_dup
595                     Perl_PerlIO_clearerr
596                     Perl_PerlIO_close
597                     Perl_PerlIO_context_layers
598                     Perl_PerlIO_eof
599                     Perl_PerlIO_error
600                     Perl_PerlIO_fileno
601                     Perl_PerlIO_fill
602                     Perl_PerlIO_flush
603                     Perl_PerlIO_get_base
604                     Perl_PerlIO_get_bufsiz
605                     Perl_PerlIO_get_cnt
606                     Perl_PerlIO_get_ptr
607                     Perl_PerlIO_read
608                     Perl_PerlIO_seek
609                     Perl_PerlIO_set_cnt
610                     Perl_PerlIO_set_ptrcnt
611                     Perl_PerlIO_setlinebuf
612                     Perl_PerlIO_stderr
613                     Perl_PerlIO_stdin
614                     Perl_PerlIO_stdout
615                     Perl_PerlIO_tell
616                     Perl_PerlIO_unread
617                     Perl_PerlIO_write
618 );
619 if ($ARGS{PLATFORM} eq 'netware') {
620     push(@layer_syms,'PL_def_layerlist','PL_known_layers','PL_perlio');
621 }
622
623 if ($define{'USE_PERLIO'}) {
624     # Export the symols that make up the PerlIO abstraction, regardless
625     # of its implementation - read from a file
626     push @syms, 'perlio.sym';
627
628     # This part is then dependent on how the abstraction is implemented
629     if ($define{'USE_SFIO'}) {
630         # Old legacy non-stdio "PerlIO"
631         ++$skip{$_} foreach @layer_syms;
632         ++$skip{perlsio_binmode};
633         # SFIO defines most of the PerlIO routines as macros
634         # So undo most of what $perlio_sym has just done - d'oh !
635         # Perhaps it would be better to list the ones which do exist
636         # And emit them
637         ++$skip{$_} foreach qw(
638                          PerlIO_canset_cnt
639                          PerlIO_clearerr
640                          PerlIO_close
641                          PerlIO_eof
642                          PerlIO_error
643                          PerlIO_exportFILE
644                          PerlIO_fast_gets
645                          PerlIO_fdopen
646                          PerlIO_fileno
647                          PerlIO_findFILE
648                          PerlIO_flush
649                          PerlIO_get_base
650                          PerlIO_get_bufsiz
651                          PerlIO_get_cnt
652                          PerlIO_get_ptr
653                          PerlIO_getc
654                          PerlIO_getname
655                          PerlIO_has_base
656                          PerlIO_has_cntptr
657                          PerlIO_importFILE
658                          PerlIO_open
659                          PerlIO_printf
660                          PerlIO_putc
661                          PerlIO_puts
662                          PerlIO_read
663                          PerlIO_releaseFILE
664                          PerlIO_reopen
665                          PerlIO_rewind
666                          PerlIO_seek
667                          PerlIO_set_cnt
668                          PerlIO_set_ptrcnt
669                          PerlIO_setlinebuf
670                          PerlIO_sprintf
671                          PerlIO_stderr
672                          PerlIO_stdin
673                          PerlIO_stdout
674                          PerlIO_stdoutf
675                          PerlIO_tell
676                          PerlIO_ungetc
677                          PerlIO_vprintf
678                          PerlIO_write
679                          PerlIO_perlio
680                          Perl_PerlIO_clearerr
681                          Perl_PerlIO_close
682                          Perl_PerlIO_eof
683                          Perl_PerlIO_error
684                          Perl_PerlIO_fileno
685                          Perl_PerlIO_fill
686                          Perl_PerlIO_flush
687                          Perl_PerlIO_get_base
688                          Perl_PerlIO_get_bufsiz
689                          Perl_PerlIO_get_cnt
690                          Perl_PerlIO_get_ptr
691                          Perl_PerlIO_read
692                          Perl_PerlIO_seek
693                          Perl_PerlIO_set_cnt
694                          Perl_PerlIO_set_ptrcnt
695                          Perl_PerlIO_setlinebuf
696                          Perl_PerlIO_stderr
697                          Perl_PerlIO_stdin
698                          Perl_PerlIO_stdout
699                          Perl_PerlIO_tell
700                          Perl_PerlIO_unread
701                          Perl_PerlIO_write
702                          PL_def_layerlist
703                          PL_known_layers
704                          PL_perlio
705                              );
706     }
707     else {
708         # PerlIO with layers - export implementation
709         try_symbols(@layer_syms, 'perlsio_binmode');
710     }
711 } else {
712         # -Uuseperlio
713         # Skip the PerlIO layer symbols - although
714         # nothing should have exported them anyway.
715         ++$skip{$_} foreach @layer_syms;
716         ++$skip{$_} foreach qw(
717                         perlsio_binmode
718                         PL_def_layerlist
719                         PL_known_layers
720                         PL_perlio
721                         PL_perlio_debug_fd
722                         PL_perlio_fd_refcnt
723                         PL_perlio_fd_refcnt_size
724                         PL_perlio_mutex
725                              );
726
727         # Also do NOT add abstraction symbols from $perlio_sym
728         # abstraction is done as #define to stdio
729         # Remaining remnants that _may_ be functions are handled below.
730 }
731
732 ###############################################################################
733
734 # At this point all skip lists should be completed, as we are about to test
735 # many symbols against them.
736
737 {
738     my %seen;
739     my ($embed) = setup_embed($ARGS{TARG_DIR});
740
741     foreach (@$embed) {
742         my ($flags, $retval, $func, @args) = @$_;
743         next unless $func;
744         if ($flags =~ /[AX]/ && $flags !~ /[xm]/ || $flags =~ /b/) {
745             # public API, so export
746
747             # If a function is defined twice, for example before and after
748             # an #else, only export its name once. Important to do this test
749             # within the block, as the *first* definition may have flags which
750             # mean "don't export"
751             next if $seen{$func}++;
752             $func = "Perl_$func" if $flags =~ /[pbX]/;
753             ++$export{$func} unless exists $skip{$func};
754         }
755     }
756 }
757
758 foreach (@syms) {
759     my $syms = $ARGS{TARG_DIR} . $_;
760     open my $global, '<', $syms or die "failed to open $syms: $!\n";
761     # Functions already have a Perl_ prefix
762     # Variables need a PL_ prefix
763     my $prefix = $syms =~ /var\.sym$/i ? 'PL_' : '';
764     while (<$global>) {
765         next unless /^([A-Za-z].*)/;
766         my $symbol = "$prefix$1";
767         ++$export{$symbol} unless exists $skip{$symbol};
768     }
769 }
770
771 # variables
772
773 if ($define{'MULTIPLICITY'} && $define{PERL_GLOBAL_STRUCT}) {
774     readvar('perlvars.h', \%export, sub { "Perl_" . $_[1] . $_[2] . "_ptr" });
775     # XXX AIX seems to want the perlvars.h symbols, for some reason
776     if ($ARGS{PLATFORM} eq 'aix' or $ARGS{PLATFORM} eq 'os2') { # OS/2 needs PL_thr_key
777         readvar('perlvars.h', \%export);
778     }
779 }
780 else {
781     unless ($define{'PERL_GLOBAL_STRUCT'}) {
782         readvar('perlvars.h', \%export);
783     }
784     unless ($define{MULTIPLICITY}) {
785         readvar('intrpvar.h', \%export);
786     }
787 }
788
789 # Oddities from PerlIO
790 # All have alternate implementations in perlio.c, so always exist.
791 # Should they be considered to be part of the API?
792 try_symbols(qw(
793                     PerlIO_binmode
794                     PerlIO_getpos
795                     PerlIO_init
796                     PerlIO_setpos
797                     PerlIO_sprintf
798                     PerlIO_tmpfile
799                     PerlIO_vsprintf
800              ));
801
802 if ($ARGS{PLATFORM} eq 'win32') {
803     try_symbols(qw(
804                                  setgid
805                                  setuid
806                                  win32_free_childdir
807                                  win32_free_childenv
808                                  win32_get_childdir
809                                  win32_get_childenv
810                                  win32_spawnvp
811                  ));
812 }
813
814 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
815     try_symbols(qw(
816                             Perl_init_os_extras
817                             Perl_thread_create
818                             Perl_win32_init
819                             Perl_win32_term
820                             RunPerl
821                             win32_async_check
822                             win32_errno
823                             win32_environ
824                             win32_abort
825                             win32_fstat
826                             win32_stat
827                             win32_pipe
828                             win32_popen
829                             win32_pclose
830                             win32_rename
831                             win32_setmode
832                             win32_chsize
833                             win32_lseek
834                             win32_tell
835                             win32_dup
836                             win32_dup2
837                             win32_open
838                             win32_close
839                             win32_eof
840                             win32_isatty
841                             win32_read
842                             win32_write
843                             win32_mkdir
844                             win32_rmdir
845                             win32_chdir
846                             win32_flock
847                             win32_execv
848                             win32_execvp
849                             win32_htons
850                             win32_ntohs
851                             win32_htonl
852                             win32_ntohl
853                             win32_inet_addr
854                             win32_inet_ntoa
855                             win32_socket
856                             win32_bind
857                             win32_listen
858                             win32_accept
859                             win32_connect
860                             win32_send
861                             win32_sendto
862                             win32_recv
863                             win32_recvfrom
864                             win32_shutdown
865                             win32_closesocket
866                             win32_ioctlsocket
867                             win32_setsockopt
868                             win32_getsockopt
869                             win32_getpeername
870                             win32_getsockname
871                             win32_gethostname
872                             win32_gethostbyname
873                             win32_gethostbyaddr
874                             win32_getprotobyname
875                             win32_getprotobynumber
876                             win32_getservbyname
877                             win32_getservbyport
878                             win32_select
879                             win32_endhostent
880                             win32_endnetent
881                             win32_endprotoent
882                             win32_endservent
883                             win32_getnetent
884                             win32_getnetbyname
885                             win32_getnetbyaddr
886                             win32_getprotoent
887                             win32_getservent
888                             win32_sethostent
889                             win32_setnetent
890                             win32_setprotoent
891                             win32_setservent
892                             win32_getenv
893                             win32_putenv
894                             win32_perror
895                             win32_malloc
896                             win32_calloc
897                             win32_realloc
898                             win32_free
899                             win32_sleep
900                             win32_times
901                             win32_access
902                             win32_alarm
903                             win32_chmod
904                             win32_open_osfhandle
905                             win32_get_osfhandle
906                             win32_ioctl
907                             win32_link
908                             win32_unlink
909                             win32_utime
910                             win32_gettimeofday
911                             win32_uname
912                             win32_wait
913                             win32_waitpid
914                             win32_kill
915                             win32_str_os_error
916                             win32_opendir
917                             win32_readdir
918                             win32_telldir
919                             win32_seekdir
920                             win32_rewinddir
921                             win32_closedir
922                             win32_longpath
923                             win32_ansipath
924                             win32_os_id
925                             win32_getpid
926                             win32_crypt
927                             win32_dynaload
928                             win32_clearenv
929                             win32_stdin
930                             win32_stdout
931                             win32_stderr
932                             win32_ferror
933                             win32_feof
934                             win32_strerror
935                             win32_fprintf
936                             win32_printf
937                             win32_vfprintf
938                             win32_vprintf
939                             win32_fread
940                             win32_fwrite
941                             win32_fopen
942                             win32_fdopen
943                             win32_freopen
944                             win32_fclose
945                             win32_fputs
946                             win32_fputc
947                             win32_ungetc
948                             win32_getc
949                             win32_fileno
950                             win32_clearerr
951                             win32_fflush
952                             win32_ftell
953                             win32_fseek
954                             win32_fgetpos
955                             win32_fsetpos
956                             win32_rewind
957                             win32_tmpfile
958                             win32_setbuf
959                             win32_setvbuf
960                             win32_flushall
961                             win32_fcloseall
962                             win32_fgets
963                             win32_gets
964                             win32_fgetc
965                             win32_putc
966                             win32_puts
967                             win32_getchar
968                             win32_putchar
969                  ));
970 }
971 elsif ($ARGS{PLATFORM} eq 'vms') {
972     try_symbols(qw(
973                       Perl_cando
974                       Perl_cando_by_name
975                       Perl_closedir
976                       Perl_csighandler_init
977                       Perl_do_rmdir
978                       Perl_fileify_dirspec
979                       Perl_fileify_dirspec_ts
980                       Perl_fileify_dirspec_utf8
981                       Perl_fileify_dirspec_utf8_ts
982                       Perl_flex_fstat
983                       Perl_flex_lstat
984                       Perl_flex_stat
985                       Perl_kill_file
986                       Perl_my_chdir
987                       Perl_my_chmod
988                       Perl_my_crypt
989                       Perl_my_endpwent
990                       Perl_my_fclose
991                       Perl_my_fdopen
992                       Perl_my_fgetname
993                       Perl_my_flush
994                       Perl_my_fwrite
995                       Perl_my_gconvert
996                       Perl_my_getenv
997                       Perl_my_getenv_len
998                       Perl_my_getlogin
999                       Perl_my_getpwnam
1000                       Perl_my_getpwuid
1001                       Perl_my_gmtime
1002                       Perl_my_kill
1003                       Perl_my_localtime
1004                       Perl_my_mkdir
1005                       Perl_my_sigaction
1006                       Perl_my_symlink
1007                       Perl_my_time
1008                       Perl_my_tmpfile
1009                       Perl_my_trnlnm
1010                       Perl_my_utime
1011                       Perl_my_waitpid
1012                       Perl_opendir
1013                       Perl_pathify_dirspec
1014                       Perl_pathify_dirspec_ts
1015                       Perl_pathify_dirspec_utf8
1016                       Perl_pathify_dirspec_utf8_ts
1017                       Perl_readdir
1018                       Perl_readdir_r
1019                       Perl_rename
1020                       Perl_rmscopy
1021                       Perl_rmsexpand
1022                       Perl_rmsexpand_ts
1023                       Perl_rmsexpand_utf8
1024                       Perl_rmsexpand_utf8_ts
1025                       Perl_seekdir
1026                       Perl_sig_to_vmscondition
1027                       Perl_telldir
1028                       Perl_tounixpath
1029                       Perl_tounixpath_ts
1030                       Perl_tounixpath_utf8
1031                       Perl_tounixpath_utf8_ts
1032                       Perl_tounixspec
1033                       Perl_tounixspec_ts
1034                       Perl_tounixspec_utf8
1035                       Perl_tounixspec_utf8_ts
1036                       Perl_tovmspath
1037                       Perl_tovmspath_ts
1038                       Perl_tovmspath_utf8
1039                       Perl_tovmspath_utf8_ts
1040                       Perl_tovmsspec
1041                       Perl_tovmsspec_ts
1042                       Perl_tovmsspec_utf8
1043                       Perl_tovmsspec_utf8_ts
1044                       Perl_trim_unixpath
1045                       Perl_vms_case_tolerant
1046                       Perl_vms_do_aexec
1047                       Perl_vms_do_exec
1048                       Perl_vms_image_init
1049                       Perl_vms_realpath
1050                       Perl_vmssetenv
1051                       Perl_vmssetuserlnm
1052                       Perl_vmstrnenv
1053                       PerlIO_openn
1054                  ));
1055 }
1056 elsif ($ARGS{PLATFORM} eq 'os2') {
1057     try_symbols(qw(
1058                       ctermid
1059                       get_sysinfo
1060                       Perl_OS2_init
1061                       Perl_OS2_init3
1062                       Perl_OS2_term
1063                       OS2_Perl_data
1064                       dlopen
1065                       dlsym
1066                       dlerror
1067                       dlclose
1068                       dup2
1069                       dup
1070                       my_tmpfile
1071                       my_tmpnam
1072                       my_flock
1073                       my_rmdir
1074                       my_mkdir
1075                       my_getpwuid
1076                       my_getpwnam
1077                       my_getpwent
1078                       my_setpwent
1079                       my_endpwent
1080                       fork_with_resources
1081                       croak_with_os2error
1082                       setgrent
1083                       endgrent
1084                       getgrent
1085                       malloc_mutex
1086                       threads_mutex
1087                       nthreads
1088                       nthreads_cond
1089                       os2_cond_wait
1090                       os2_stat
1091                       os2_execname
1092                       async_mssleep
1093                       msCounter
1094                       InfoTable
1095                       pthread_join
1096                       pthread_create
1097                       pthread_detach
1098                       XS_Cwd_change_drive
1099                       XS_Cwd_current_drive
1100                       XS_Cwd_extLibpath
1101                       XS_Cwd_extLibpath_set
1102                       XS_Cwd_sys_abspath
1103                       XS_Cwd_sys_chdir
1104                       XS_Cwd_sys_cwd
1105                       XS_Cwd_sys_is_absolute
1106                       XS_Cwd_sys_is_relative
1107                       XS_Cwd_sys_is_rooted
1108                       XS_DynaLoader_mod2fname
1109                       XS_File__Copy_syscopy
1110                       Perl_Register_MQ
1111                       Perl_Deregister_MQ
1112                       Perl_Serve_Messages
1113                       Perl_Process_Messages
1114                       init_PMWIN_entries
1115                       PMWIN_entries
1116                       Perl_hab_GET
1117                       loadByOrdinal
1118                       pExtFCN
1119                       os2error
1120                       ResetWinError
1121                       CroakWinError
1122                       PL_do_undump
1123                  ));
1124 }
1125 elsif ($ARGS{PLATFORM} eq 'netware') {
1126     try_symbols(qw(
1127                         Perl_init_os_extras
1128                         Perl_thread_create
1129                         Perl_nw5_init
1130                         RunPerl
1131                         AllocStdPerl
1132                         FreeStdPerl
1133                         do_spawn2
1134                         do_aspawn
1135                         nw_uname
1136                         nw_stdin
1137                         nw_stdout
1138                         nw_stderr
1139                         nw_feof
1140                         nw_ferror
1141                         nw_fopen
1142                         nw_fclose
1143                         nw_clearerr
1144                         nw_getc
1145                         nw_fgets
1146                         nw_fputc
1147                         nw_fputs
1148                         nw_fflush
1149                         nw_ungetc
1150                         nw_fileno
1151                         nw_fdopen
1152                         nw_freopen
1153                         nw_fread
1154                         nw_fwrite
1155                         nw_setbuf
1156                         nw_setvbuf
1157                         nw_vfprintf
1158                         nw_ftell
1159                         nw_fseek
1160                         nw_rewind
1161                         nw_tmpfile
1162                         nw_fgetpos
1163                         nw_fsetpos
1164                         nw_dup
1165                         nw_access
1166                         nw_chmod
1167                         nw_chsize
1168                         nw_close
1169                         nw_dup2
1170                         nw_flock
1171                         nw_isatty
1172                         nw_link
1173                         nw_lseek
1174                         nw_stat
1175                         nw_mktemp
1176                         nw_open
1177                         nw_read
1178                         nw_rename
1179                         nw_setmode
1180                         nw_unlink
1181                         nw_utime
1182                         nw_write
1183                         nw_chdir
1184                         nw_rmdir
1185                         nw_closedir
1186                         nw_opendir
1187                         nw_readdir
1188                         nw_rewinddir
1189                         nw_seekdir
1190                         nw_telldir
1191                         nw_htonl
1192                         nw_htons
1193                         nw_ntohl
1194                         nw_ntohs
1195                         nw_accept
1196                         nw_bind
1197                         nw_connect
1198                         nw_endhostent
1199                         nw_endnetent
1200                         nw_endprotoent
1201                         nw_endservent
1202                         nw_gethostbyaddr
1203                         nw_gethostbyname
1204                         nw_gethostent
1205                         nw_gethostname
1206                         nw_getnetbyaddr
1207                         nw_getnetbyname
1208                         nw_getnetent
1209                         nw_getpeername
1210                         nw_getprotobyname
1211                         nw_getprotobynumber
1212                         nw_getprotoent
1213                         nw_getservbyname
1214                         nw_getservbyport
1215                         nw_getservent
1216                         nw_getsockname
1217                         nw_getsockopt
1218                         nw_inet_addr
1219                         nw_listen
1220                         nw_socket
1221                         nw_recv
1222                         nw_recvfrom
1223                         nw_select
1224                         nw_send
1225                         nw_sendto
1226                         nw_sethostent
1227                         nw_setnetent
1228                         nw_setprotoent
1229                         nw_setservent
1230                         nw_setsockopt
1231                         nw_inet_ntoa
1232                         nw_shutdown
1233                         nw_crypt
1234                         nw_execvp
1235                         nw_kill
1236                         nw_Popen
1237                         nw_Pclose
1238                         nw_Pipe
1239                         nw_times
1240                         nw_waitpid
1241                         nw_getpid
1242                         nw_spawnvp
1243                         nw_os_id
1244                         nw_open_osfhandle
1245                         nw_get_osfhandle
1246                         nw_abort
1247                         nw_sleep
1248                         nw_wait
1249                         nw_dynaload
1250                         nw_strerror
1251                         fnFpSetMode
1252                         fnInsertHashListAddrs
1253                         fnGetHashListAddrs
1254                         Perl_deb
1255                         Perl_sv_setsv
1256                         Perl_sv_catsv
1257                         Perl_sv_catpvn
1258                         Perl_sv_2pv
1259                         nw_freeenviron
1260                         Remove_Thread_Ctx
1261                  ));
1262 }
1263
1264 # When added this code was only run for Win32 and WinCE
1265 # Currently only Win32 links static extensions into the shared library.
1266 # The WinCE makefile doesn't appear to support static extensions, so this code
1267 # can't have any effect there.
1268 # The NetWare Makefile doesn't support static extensions (and hardcodes the
1269 # list of dynamic extensions, and the rules to build them)
1270 # For *nix (and presumably OS/2) with a shared libperl, Makefile.SH compiles
1271 # static extensions with -fPIC, but links them to perl, not libperl.so
1272 # The VMS build scripts don't yet implement static extensions at all.
1273
1274 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
1275     # records of type boot_module for statically linked modules (except Dynaloader)
1276     my $static_ext = $Config{static_ext} // "";
1277     $static_ext =~ s/\//__/g;
1278     $static_ext =~ s/\bDynaLoader\b//;
1279     try_symbols(map {"boot_$_"} grep {/\S/} split /\s+/, $static_ext);
1280     try_symbols("init_Win32CORE") if $static_ext =~ /\bWin32CORE\b/;
1281 }
1282
1283 if ($ARGS{PLATFORM} eq 'os2') {
1284     my (%mapped, @missing);
1285     open MAP, 'miniperl.map' or die 'Cannot read miniperl.map';
1286     /^\s*[\da-f:]+\s+(\w+)/i and $mapped{$1}++ foreach <MAP>;
1287     close MAP or die 'Cannot close miniperl.map';
1288
1289     @missing = grep { !exists $mapped{$_} }
1290                     keys %export;
1291     @missing = grep { !exists $exportperlmalloc{$_} } @missing;
1292     delete $export{$_} foreach @missing;
1293 }
1294
1295 ###############################################################################
1296
1297 # Now all symbols should be defined because next we are going to output them.
1298
1299 # Start with platform specific headers:
1300
1301 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
1302     my $dll = $define{PERL_DLL} ? $define{PERL_DLL} =~ s/\.dll$//ir
1303         : "perl$Config{api_revision}$Config{api_version}";
1304     print "LIBRARY $dll\n";
1305     # The DESCRIPTION module definition file statement is not supported
1306     # by VC7 onwards.
1307     if ($ARGS{CCTYPE} =~ /^(?:MSVC60|GCC)$/) {
1308         print "DESCRIPTION 'Perl interpreter'\n";
1309     }
1310     print "EXPORTS\n";
1311 }
1312 elsif ($ARGS{PLATFORM} eq 'os2') {
1313     (my $v = $]) =~ s/(\d\.\d\d\d)(\d\d)$/$1_$2/;
1314     $v .= '-thread' if $Config{archname} =~ /-thread/;
1315     (my $dll = $define{PERL_DLL}) =~ s/\.dll$//i;
1316     $v .= "\@$Config{perl_patchlevel}" if $Config{perl_patchlevel};
1317     my $d = "DESCRIPTION '\@#perl5-porters\@perl.org:$v#\@ Perl interpreter, configured as $Config{config_args}'";
1318     $d = substr($d, 0, 249) . "...'" if length $d > 253;
1319     print <<"---EOP---";
1320 LIBRARY '$dll' INITINSTANCE TERMINSTANCE
1321 $d
1322 STACKSIZE 32768
1323 CODE LOADONCALL
1324 DATA LOADONCALL NONSHARED MULTIPLE
1325 EXPORTS
1326 ---EOP---
1327 }
1328 elsif ($ARGS{PLATFORM} eq 'aix') {
1329     my $OSVER = `uname -v`;
1330     chop $OSVER;
1331     my $OSREL = `uname -r`;
1332     chop $OSREL;
1333     if ($OSVER > 4 || ($OSVER == 4 && $OSREL >= 3)) {
1334         print "#! ..\n";
1335     } else {
1336         print "#!\n";
1337     }
1338 }
1339 elsif ($ARGS{PLATFORM} eq 'netware') {
1340         if ($ARGS{FILETYPE} eq 'def') {
1341         print "LIBRARY perl$Config{api_revision}$Config{api_version}\n";
1342         print "DESCRIPTION 'Perl interpreter for NetWare'\n";
1343         print "EXPORTS\n";
1344         }
1345 }
1346
1347 # Then the symbols
1348
1349 my @symbols = $fold ? sort {lc $a cmp lc $b} keys %export : sort keys %export;
1350 foreach my $symbol (@symbols) {
1351     if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
1352         print "\t$symbol\n";
1353     }
1354     elsif ($ARGS{PLATFORM} eq 'os2') {
1355         printf qq(    %-31s \@%s\n),
1356           qq("$symbol"), $ordinal{$symbol} || ++$sym_ord;
1357         printf qq(    %-31s \@%s\n),
1358           qq("$exportperlmalloc{$symbol}" = "$symbol"),
1359           $ordinal{$exportperlmalloc{$symbol}} || ++$sym_ord
1360           if $exportperlmalloc and exists $exportperlmalloc{$symbol};
1361     }
1362     elsif ($ARGS{PLATFORM} eq 'netware') {
1363         print "\t$symbol,\n";
1364     } else {
1365         print "$symbol\n";
1366     }
1367 }
1368
1369 # Then platform specific footers.
1370
1371 if ($ARGS{PLATFORM} eq 'os2') {
1372     print <<EOP;
1373     dll_perlmain=main
1374     fill_extLibpath
1375     dir_subst
1376     Perl_OS2_handler_install
1377
1378 ; LAST_ORDINAL=$sym_ord
1379 EOP
1380 }
1381
1382 1;