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