Don’t let XSLoader load relative paths
[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 my $fold;
36 my %ARGS;
37 my %define;
38
39 BEGIN {
40     BEGIN { unshift @INC, "lib" }
41     use Config;
42     use strict;
43
44     %ARGS = (CCTYPE => 'MSVC', TARG_DIR => '');
45
46     sub process_cc_flags {
47         foreach (map {split /\s+/, $_} @_) {
48             $define{$1} = $2 // 1 if /^-D(\w+)(?:=(.+))?/;
49         }
50     }
51
52     while (@ARGV) {
53         my $flag = shift;
54         if ($flag =~ /^(?:CC_FLAGS=)?(-D\w.*)/) {
55             process_cc_flags($1);
56         } elsif ($flag =~ /^(CCTYPE|FILETYPE|PLATFORM|TARG_DIR)=(.+)$/) {
57             $ARGS{$1} = $2;
58         } elsif ($flag eq '--sort-fold') {
59             ++$fold;
60         }
61     }
62     my @PLATFORM = qw(aix win32 wince os2 netware vms test);
63     my %PLATFORM;
64     @PLATFORM{@PLATFORM} = ();
65
66     die "PLATFORM undefined, must be one of: @PLATFORM\n"
67         unless defined $ARGS{PLATFORM};
68     die "PLATFORM must be one of: @PLATFORM\n"
69         unless exists $PLATFORM{$ARGS{PLATFORM}};
70 }
71 use constant PLATFORM => $ARGS{PLATFORM};
72
73 require "$ARGS{TARG_DIR}regen/embed_lib.pl";
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     && $ARGS{PLATFORM} ne 'netware';
80
81 # Add the compile-time options that miniperl was built with to %define.
82 # On Win32 these are not the same options as perl itself will be built
83 # with since miniperl is built with a canned config (one of the win32/
84 # config_H.*) and none of the BUILDOPT's that are set in the makefiles,
85 # but they do include some #define's that are hard-coded in various
86 # source files and header files and don't include any BUILDOPT's that
87 # the user might have chosen to disable because the canned configs are
88 # minimal configs that don't include any of those options.
89
90 #don't use the host Perl's -V defines for the WinCE Perl
91 if($ARGS{PLATFORM} ne 'wince') {
92     my @options = sort(Config::bincompat_options(), Config::non_bincompat_options());
93     print STDERR "Options: (@options)\n" unless $ARGS{PLATFORM} eq 'test';
94     $define{$_} = 1 foreach @options;
95 }
96
97 my %exportperlmalloc =
98     (
99        Perl_malloc              =>      "malloc",
100        Perl_mfree               =>      "free",
101        Perl_realloc             =>      "realloc",
102        Perl_calloc              =>      "calloc",
103     );
104
105 my $exportperlmalloc = $ARGS{PLATFORM} eq 'os2';
106
107 my $config_h = 'config.h';
108 open(CFG, '<', $config_h) || die "Cannot open $config_h: $!\n";
109 while (<CFG>) {
110     $define{$1} = 1 if /^\s*\#\s*define\s+(MYMALLOC|MULTIPLICITY
111                                            |SPRINTF_RETURNS_STRLEN
112                                            |KILL_BY_SIGPRC
113                                            |(?:PERL|USE|HAS)_\w+)\b/x;
114 }
115 close(CFG);
116
117 # perl.h logic duplication begins
118
119 if ($define{USE_ITHREADS}) {
120     if (!$define{MULTIPLICITY}) {
121         $define{MULTIPLICITY} = 1;
122     }
123 }
124
125 $define{PERL_IMPLICIT_CONTEXT} ||=
126     $define{USE_ITHREADS} ||
127     $define{MULTIPLICITY} ;
128
129 if ($define{USE_ITHREADS} && $ARGS{PLATFORM} ne 'win32' && $^O ne 'darwin') {
130     $define{USE_REENTRANT_API} = 1;
131 }
132
133 # perl.h logic duplication ends
134
135 print STDERR "Defines: (" . join(' ', sort keys %define) . ")\n"
136      unless $ARGS{PLATFORM} eq 'test';
137
138 my $sym_ord = 0;
139 my %ordinal;
140
141 if ($ARGS{PLATFORM} eq 'os2') {
142     if (open my $fh, '<', 'perl5.def') {
143       while (<$fh>) {
144         last if /^\s*EXPORTS\b/;
145       }
146       while (<$fh>) {
147         $ordinal{$1} = $2 if /^\s*"(\w+)"\s*(?:=\s*"\w+"\s*)?\@(\d+)\s*$/;
148         # This allows skipping ordinals which were used in older versions
149         $sym_ord = $1 if /^\s*;\s*LAST_ORDINAL\s*=\s*(\d+)\s*$/;
150       }
151       $sym_ord < $_ and $sym_ord = $_ for values %ordinal; # Take the max
152     }
153 }
154
155 my %skip;
156 # All platforms export boot_DynaLoader unconditionally.
157 my %export = ( boot_DynaLoader => 1 );
158
159 sub try_symbols {
160     foreach my $symbol (@_) {
161         ++$export{$symbol} unless exists $skip{$symbol};
162     }
163 }
164
165 sub readvar {
166     # $hash is the hash that we're adding to. For one of our callers, it will
167     # actually be the skip hash but that doesn't affect the intent of what
168     # we're doing, as in that case we skip adding something to the skip hash
169     # for the second time.
170
171     my $file = $ARGS{TARG_DIR} . shift;
172     my $hash = shift;
173     my $proc = shift;
174     open my $vars, '<', $file or die die "Cannot open $file: $!\n";
175
176     while (<$vars>) {
177         # All symbols have a Perl_ prefix because that's what embed.h sticks
178         # in front of them.  The A?I?S?C? is strictly speaking wrong.
179         next unless /\bPERLVAR(A?I?S?C?)\(([IGT]),\s*(\w+)/;
180
181         my $var = "PL_$3";
182         my $symbol = $proc ? &$proc($1,$2,$3) : $var;
183         ++$hash->{$symbol} unless exists $skip{$var};
184     }
185 }
186
187 if ($ARGS{PLATFORM} ne 'os2') {
188     ++$skip{$_} foreach qw(
189                      PL_cryptseen
190                      PL_opsave
191                      Perl_GetVars
192                      Perl_dump_fds
193                      Perl_my_bcopy
194                      Perl_my_bzero
195                      Perl_my_chsize
196                      Perl_my_htonl
197                      Perl_my_memcmp
198                      Perl_my_memset
199                      Perl_my_ntohl
200                      Perl_my_swap
201                          );
202     if ($ARGS{PLATFORM} eq 'vms') {
203         ++$skip{PL_statusvalue_posix};
204         # This is a wrapper if we have symlink, not a replacement
205         # if we don't.
206         ++$skip{Perl_my_symlink} unless $Config{d_symlink};
207     } else {
208         ++$skip{PL_statusvalue_vms};
209         if ($ARGS{PLATFORM} ne 'aix') {
210             ++$skip{$_} foreach qw(
211                                 PL_DBcv
212                                 PL_generation
213                                 PL_lastgotoprobe
214                                 PL_modcount
215                                 main
216                                  );
217         }
218     }
219 }
220
221 if ($ARGS{PLATFORM} ne 'vms') {
222     # VMS does its own thing for these symbols.
223     ++$skip{$_} foreach qw(
224                         PL_sig_handlers_initted
225                         PL_sig_ignoring
226                         PL_sig_defaulting
227                          );
228     if ($ARGS{PLATFORM} ne 'win32') {
229         ++$skip{$_} foreach qw(
230                             Perl_do_spawn
231                             Perl_do_spawn_nowait
232                             Perl_do_aspawn
233                              );
234     }
235 }
236
237 if ($ARGS{PLATFORM} ne 'win32') {
238     ++$skip{$_} foreach qw(
239                     Perl_my_setlocale
240                          );
241 }
242
243 unless ($define{UNLINK_ALL_VERSIONS}) {
244     ++$skip{Perl_unlnk};
245 }
246
247 unless ($define{'DEBUGGING'}) {
248     ++$skip{$_} foreach qw(
249                     Perl_debop
250                     Perl_debprofdump
251                     Perl_debstack
252                     Perl_debstackptrs
253                     Perl_pad_sv
254                     Perl_pad_setsv
255                     Perl__setlocale_debug_string
256                     Perl_set_padlist
257                     Perl_hv_assert
258                     PL_watchaddr
259                     PL_watchok
260                     PL_watch_pvx
261                          );
262 }
263
264 if ($define{'PERL_IMPLICIT_SYS'}) {
265     ++$skip{$_} foreach qw(
266                     Perl_my_popen
267                     Perl_my_pclose
268                          );
269     ++$export{$_} foreach qw(perl_get_host_info perl_alloc_override);
270     ++$export{perl_clone_host} if $define{USE_ITHREADS};
271 }
272 else {
273     ++$skip{$_} foreach qw(
274                     PL_Mem
275                     PL_MemShared
276                     PL_MemParse
277                     PL_Env
278                     PL_StdIO
279                     PL_LIO
280                     PL_Dir
281                     PL_Sock
282                     PL_Proc
283                     perl_alloc_using
284                     perl_clone_using
285                          );
286 }
287
288 if (!$define{'PERL_COPY_ON_WRITE'} || $define{'PERL_NO_COW'}) {
289     ++$skip{Perl_sv_setsv_cow};
290 }
291
292 unless ($define{PERL_SAWAMPERSAND}) {
293     ++$skip{PL_sawampersand};
294 }
295
296 unless ($define{'USE_REENTRANT_API'}) {
297     ++$skip{PL_reentrant_buffer};
298 }
299
300 if ($define{'MYMALLOC'}) {
301     try_symbols(qw(
302                     Perl_dump_mstats
303                     Perl_get_mstats
304                     Perl_strdup
305                     Perl_putenv
306                     MallocCfg_ptr
307                     MallocCfgP_ptr
308                     ));
309     unless ($define{USE_ITHREADS}) {
310         ++$skip{PL_malloc_mutex}
311     }
312 }
313 else {
314     ++$skip{$_} foreach qw(
315                     PL_malloc_mutex
316                     Perl_dump_mstats
317                     Perl_get_mstats
318                     MallocCfg_ptr
319                     MallocCfgP_ptr
320                          );
321 }
322
323 if ($define{'PERL_USE_SAFE_PUTENV'}) {
324     ++$skip{PL_use_safe_putenv};
325 }
326
327 unless ($define{'USE_ITHREADS'}) {
328     ++$skip{PL_thr_key};
329 }
330
331 # USE_5005THREADS symbols. Kept as reference for easier removal
332 ++$skip{$_} foreach qw(
333                     PL_sv_mutex
334                     PL_strtab_mutex
335                     PL_svref_mutex
336                     PL_cred_mutex
337                     PL_eval_mutex
338                     PL_fdpid_mutex
339                     PL_sv_lock_mutex
340                     PL_eval_cond
341                     PL_eval_owner
342                     PL_threads_mutex
343                     PL_nthreads
344                     PL_nthreads_cond
345                     PL_threadnum
346                     PL_threadsv_names
347                     PL_thrsv
348                     PL_vtbl_mutex
349                     Perl_condpair_magic
350                     Perl_new_struct_thread
351                     Perl_per_thread_magicals
352                     Perl_thread_create
353                     Perl_find_threadsv
354                     Perl_unlock_condpair
355                     Perl_magic_mutexfree
356                     Perl_sv_lock
357                      );
358
359 unless ($define{'USE_ITHREADS'}) {
360     ++$skip{$_} foreach qw(
361                     PL_check_mutex
362                     PL_op_mutex
363                     PL_regex_pad
364                     PL_regex_padav
365                     PL_dollarzero_mutex
366                     PL_hints_mutex
367                     PL_locale_mutex
368                     PL_my_ctx_mutex
369                     PL_perlio_mutex
370                     PL_stashpad
371                     PL_stashpadix
372                     PL_stashpadmax
373                     Perl_alloccopstash
374                     Perl_allocfilegv
375                     Perl_clone_params_del
376                     Perl_clone_params_new
377                     Perl_parser_dup
378                     Perl_dirp_dup
379                     Perl_cx_dup
380                     Perl_si_dup
381                     Perl_any_dup
382                     Perl_ss_dup
383                     Perl_fp_dup
384                     Perl_gp_dup
385                     Perl_he_dup
386                     Perl_mg_dup
387                     Perl_re_dup_guts
388                     Perl_sv_dup
389                     Perl_sv_dup_inc
390                     Perl_rvpv_dup
391                     Perl_hek_dup
392                     Perl_sys_intern_dup
393                     perl_clone
394                     perl_clone_using
395                     Perl_stashpv_hvname_match
396                     Perl_regdupe_internal
397                     Perl_newPADOP
398                          );
399 }
400
401 unless ($define{'PERL_IMPLICIT_CONTEXT'}) {
402     ++$skip{$_} foreach qw(
403                     PL_my_cxt_index
404                     PL_my_cxt_list
405                     PL_my_cxt_size
406                     PL_my_cxt_keys
407                     Perl_croak_nocontext
408                     Perl_die_nocontext
409                     Perl_deb_nocontext
410                     Perl_form_nocontext
411                     Perl_load_module_nocontext
412                     Perl_mess_nocontext
413                     Perl_warn_nocontext
414                     Perl_warner_nocontext
415                     Perl_newSVpvf_nocontext
416                     Perl_sv_catpvf_nocontext
417                     Perl_sv_setpvf_nocontext
418                     Perl_sv_catpvf_mg_nocontext
419                     Perl_sv_setpvf_mg_nocontext
420                     Perl_my_cxt_init
421                     Perl_my_cxt_index
422                          );
423 }
424
425 unless ($define{'PERL_OP_PARENT'}) {
426     ++$skip{$_} foreach qw(
427                     Perl_op_parent
428                 );
429 }
430
431 unless ($define{'USE_DTRACE'}) {
432     ++$skip{$_} foreach qw(
433                     Perl_dtrace_probe_call
434                     Perl_dtrace_probe_load
435                     Perl_dtrace_probe_op
436                     Perl_dtrace_probe_phase
437                 );
438 }
439
440 if ($define{'NO_MATHOMS'}) {
441     # win32 builds happen in the win32/ subdirectory, but vms builds happen
442     # at the top level, so we need to look in two candidate locations for
443     # the mathoms.c file.
444     my ($file) = grep { -f } qw( mathoms.c ../mathoms.c )
445         or die "No mathoms.c file found in . or ..\n";
446     open my $mathoms, '<', $file
447         or die "Cannot open $file: $!\n";
448     while (<$mathoms>) {
449         ++$skip{$1} if /\A ( NATIVE_TO_NEED
450                            | ASCII_TO_NEED
451                            | Perl_\w+ ) \s* \( /axms;
452     }
453 }
454
455 unless ($define{'PERL_NEED_APPCTX'}) {
456     ++$skip{PL_appctx};
457 }
458
459 unless ($define{'PERL_NEED_TIMESBASE'}) {
460     ++$skip{PL_timesbase};
461 }
462
463 unless ($define{'DEBUG_LEAKING_SCALARS'}) {
464     ++$skip{PL_sv_serial};
465 }
466
467 unless ($define{'DEBUG_LEAKING_SCALARS_FORK_DUMP'}) {
468     ++$skip{PL_dumper_fd};
469 }
470
471 unless ($define{'PERL_DONT_CREATE_GVSV'}) {
472     ++$skip{Perl_gv_SVadd};
473 }
474
475 if ($define{'SPRINTF_RETURNS_STRLEN'}) {
476     ++$skip{Perl_my_sprintf};
477 }
478
479 unless ($define{'PERL_USES_PL_PIDSTATUS'}) {
480     ++$skip{PL_pidstatus};
481 }
482
483 unless ($define{'PERL_TRACK_MEMPOOL'}) {
484     ++$skip{PL_memory_debug_header};
485 }
486
487 unless ($define{'MULTIPLICITY'}) {
488     ++$skip{$_} foreach qw(
489                     PL_interp_size
490                     PL_interp_size_5_18_0
491                          );
492 }
493
494 unless ($define{'PERL_GLOBAL_STRUCT'}) {
495     ++$skip{PL_global_struct_size};
496 }
497
498 unless ($define{'PERL_GLOBAL_STRUCT_PRIVATE'}) {
499     ++$skip{$_} foreach qw(
500                     PL_my_cxt_keys
501                     Perl_my_cxt_index
502                          );
503 }
504
505 unless ($define{HAS_MMAP}) {
506     ++$skip{PL_mmap_page_size};
507 }
508
509 if ($define{HAS_SIGACTION}) {
510     ++$skip{PL_sig_trapped};
511
512     if ($ARGS{PLATFORM} eq 'vms') {
513         # FAKE_PERSISTENT_SIGNAL_HANDLERS defined as !defined(HAS_SIGACTION)
514         ++$skip{PL_sig_ignoring};
515         ++$skip{PL_sig_handlers_initted} unless $define{KILL_BY_SIGPRC};
516     }
517 }
518
519 if ($ARGS{PLATFORM} eq 'vms' && !$define{KILL_BY_SIGPRC}) {
520     # FAKE_DEFAULT_SIGNAL_HANDLERS defined as KILL_BY_SIGPRC
521     ++$skip{Perl_csighandler_init};
522     ++$skip{Perl_my_kill};
523     ++$skip{Perl_sig_to_vmscondition};
524     ++$skip{PL_sig_defaulting};
525     ++$skip{PL_sig_handlers_initted} unless !$define{HAS_SIGACTION};
526 }
527
528 unless ($define{USE_LOCALE_COLLATE}) {
529     ++$skip{$_} foreach qw(
530                     PL_collation_ix
531                     PL_collation_name
532                     PL_collation_standard
533                     PL_collxfrm_base
534                     PL_collxfrm_mult
535                     Perl_sv_collxfrm
536                     Perl_sv_collxfrm_flags
537                          );
538 }
539
540 unless ($define{USE_LOCALE_NUMERIC}) {
541     ++$skip{$_} foreach qw(
542                     PL_numeric_local
543                     PL_numeric_name
544                     PL_numeric_radix_sv
545                     PL_numeric_standard
546                          );
547 }
548
549 unless ($define{'USE_C_BACKTRACE'}) {
550     ++$skip{Perl_get_c_backtrace_dump};
551     ++$skip{Perl_dump_c_backtrace};
552 }
553
554 unless ($define{HAVE_INTERP_INTERN}) {
555     ++$skip{$_} foreach qw(
556                     Perl_sys_intern_clear
557                     Perl_sys_intern_dup
558                     Perl_sys_intern_init
559                     PL_sys_intern
560                          );
561 }
562
563 if ($define{HAS_SIGNBIT}) {
564     ++$skip{Perl_signbit};
565 }
566
567 if ($define{'PERL_GLOBAL_STRUCT'}) {
568     readvar('perlvars.h', \%skip);
569     # This seems like the least ugly way to cope with the fact that PL_sh_path
570     # is mentioned in perlvar.h and globvar.sym, and always exported.
571     delete $skip{PL_sh_path};
572     ++$export{Perl_GetVars};
573     try_symbols(qw(PL_Vars PL_VarsPtr))
574       unless $ARGS{CCTYPE} eq 'GCC' || $define{PERL_GLOBAL_STRUCT_PRIVATE};
575 } else {
576     ++$skip{$_} foreach qw(Perl_init_global_struct Perl_free_global_struct);
577 }
578
579 ++$skip{PL_op_exec_cnt}
580     unless $define{PERL_TRACE_OPS};
581
582 # functions from *.sym files
583
584 my @syms = qw(globvar.sym);
585
586 # Symbols that are the public face of the PerlIO layers implementation
587 # These are in _addition to_ the public face of the abstraction
588 # and need to be exported to allow XS modules to implement layers
589 my @layer_syms = qw(
590                     PerlIOBase_binmode
591                     PerlIOBase_clearerr
592                     PerlIOBase_close
593                     PerlIOBase_dup
594                     PerlIOBase_eof
595                     PerlIOBase_error
596                     PerlIOBase_fileno
597                     PerlIOBase_open
598                     PerlIOBase_noop_fail
599                     PerlIOBase_noop_ok
600                     PerlIOBase_popped
601                     PerlIOBase_pushed
602                     PerlIOBase_read
603                     PerlIOBase_setlinebuf
604                     PerlIOBase_unread
605                     PerlIOBuf_bufsiz
606                     PerlIOBuf_close
607                     PerlIOBuf_dup
608                     PerlIOBuf_fill
609                     PerlIOBuf_flush
610                     PerlIOBuf_get_base
611                     PerlIOBuf_get_cnt
612                     PerlIOBuf_get_ptr
613                     PerlIOBuf_open
614                     PerlIOBuf_popped
615                     PerlIOBuf_pushed
616                     PerlIOBuf_read
617                     PerlIOBuf_seek
618                     PerlIOBuf_set_ptrcnt
619                     PerlIOBuf_tell
620                     PerlIOBuf_unread
621                     PerlIOBuf_write
622                     PerlIO_allocate
623                     PerlIO_apply_layera
624                     PerlIO_apply_layers
625                     PerlIO_arg_fetch
626                     PerlIO_debug
627                     PerlIO_define_layer
628                     PerlIO_find_layer
629                     PerlIO_isutf8
630                     PerlIO_layer_fetch
631                     PerlIO_list_alloc
632                     PerlIO_list_free
633                     PerlIO_modestr
634                     PerlIO_parse_layers
635                     PerlIO_pending
636                     PerlIO_perlio
637                     PerlIO_pop
638                     PerlIO_push
639                     PerlIO_sv_dup
640                     Perl_PerlIO_clearerr
641                     Perl_PerlIO_close
642                     Perl_PerlIO_context_layers
643                     Perl_PerlIO_eof
644                     Perl_PerlIO_error
645                     Perl_PerlIO_fileno
646                     Perl_PerlIO_fill
647                     Perl_PerlIO_flush
648                     Perl_PerlIO_get_base
649                     Perl_PerlIO_get_bufsiz
650                     Perl_PerlIO_get_cnt
651                     Perl_PerlIO_get_ptr
652                     Perl_PerlIO_read
653                     Perl_PerlIO_restore_errno
654                     Perl_PerlIO_save_errno
655                     Perl_PerlIO_seek
656                     Perl_PerlIO_set_cnt
657                     Perl_PerlIO_set_ptrcnt
658                     Perl_PerlIO_setlinebuf
659                     Perl_PerlIO_stderr
660                     Perl_PerlIO_stdin
661                     Perl_PerlIO_stdout
662                     Perl_PerlIO_tell
663                     Perl_PerlIO_unread
664                     Perl_PerlIO_write
665 );
666 if ($ARGS{PLATFORM} eq 'netware') {
667     push(@layer_syms,'PL_def_layerlist','PL_known_layers','PL_perlio');
668 }
669
670 # Export the symbols that make up the PerlIO abstraction, regardless
671 # of its implementation - read from a file
672 push @syms, 'perlio.sym';
673
674 # PerlIO with layers - export implementation
675 try_symbols(@layer_syms, 'perlsio_binmode');
676
677
678 unless ($define{'USE_QUADMATH'}) {
679   ++$skip{Perl_quadmath_format_needed};
680   ++$skip{Perl_quadmath_format_single};
681 }
682
683 ###############################################################################
684
685 # At this point all skip lists should be completed, as we are about to test
686 # many symbols against them.
687
688 {
689     my %seen;
690     my ($embed) = setup_embed($ARGS{TARG_DIR});
691
692     foreach (@$embed) {
693         my ($flags, $retval, $func, @args) = @$_;
694         next unless $func;
695         if ($flags =~ /[AX]/ && $flags !~ /[xmi]/ || $flags =~ /b/) {
696             # public API, so export
697
698             # If a function is defined twice, for example before and after
699             # an #else, only export its name once. Important to do this test
700             # within the block, as the *first* definition may have flags which
701             # mean "don't export"
702             next if $seen{$func}++;
703             # Should we also skip adding the Perl_ prefix if $flags =~ /o/ ?
704             $func = "Perl_$func" if ($flags =~ /[pbX]/ && $func !~ /^Perl_/); 
705             ++$export{$func} unless exists $skip{$func};
706         }
707     }
708 }
709
710 foreach (@syms) {
711     my $syms = $ARGS{TARG_DIR} . $_;
712     open my $global, '<', $syms or die "failed to open $syms: $!\n";
713     while (<$global>) {
714         next unless /^([A-Za-z].*)/;
715         my $symbol = "$1";
716         ++$export{$symbol} unless exists $skip{$symbol};
717     }
718 }
719
720 # variables
721
722 if ($define{'MULTIPLICITY'} && $define{PERL_GLOBAL_STRUCT}) {
723     readvar('perlvars.h', \%export, sub { "Perl_" . $_[1] . $_[2] . "_ptr" });
724     # XXX AIX seems to want the perlvars.h symbols, for some reason
725     if ($ARGS{PLATFORM} eq 'aix' or $ARGS{PLATFORM} eq 'os2') { # OS/2 needs PL_thr_key
726         readvar('perlvars.h', \%export);
727     }
728 }
729 else {
730     unless ($define{'PERL_GLOBAL_STRUCT'}) {
731         readvar('perlvars.h', \%export);
732     }
733     unless ($define{MULTIPLICITY}) {
734         readvar('intrpvar.h', \%export);
735     }
736 }
737
738 # Oddities from PerlIO
739 # All have alternate implementations in perlio.c, so always exist.
740 # Should they be considered to be part of the API?
741 try_symbols(qw(
742                     PerlIO_binmode
743                     PerlIO_getpos
744                     PerlIO_init
745                     PerlIO_setpos
746                     PerlIO_tmpfile
747              ));
748
749 if ($ARGS{PLATFORM} eq 'win32') {
750     try_symbols(qw(
751                                  win32_free_childdir
752                                  win32_free_childenv
753                                  win32_get_childdir
754                                  win32_get_childenv
755                                  win32_spawnvp
756                  ));
757 }
758
759 if ($ARGS{PLATFORM} eq 'wince') {
760     ++$skip{'win32_isatty'}; # commit 4342f4d6df is win32-only
761 }
762
763 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
764     try_symbols(qw(
765                             Perl_init_os_extras
766                             Perl_thread_create
767                             Perl_win32_init
768                             Perl_win32_term
769                             RunPerl
770                             win32_async_check
771                             win32_errno
772                             win32_environ
773                             win32_abort
774                             win32_fstat
775                             win32_stat
776                             win32_pipe
777                             win32_popen
778                             win32_pclose
779                             win32_rename
780                             win32_setmode
781                             win32_chsize
782                             win32_lseek
783                             win32_tell
784                             win32_dup
785                             win32_dup2
786                             win32_open
787                             win32_close
788                             win32_eof
789                             win32_isatty
790                             win32_read
791                             win32_write
792                             win32_mkdir
793                             win32_rmdir
794                             win32_chdir
795                             win32_flock
796                             win32_execv
797                             win32_execvp
798                             win32_htons
799                             win32_ntohs
800                             win32_htonl
801                             win32_ntohl
802                             win32_inet_addr
803                             win32_inet_ntoa
804                             win32_socket
805                             win32_bind
806                             win32_listen
807                             win32_accept
808                             win32_connect
809                             win32_send
810                             win32_sendto
811                             win32_recv
812                             win32_recvfrom
813                             win32_shutdown
814                             win32_closesocket
815                             win32_ioctlsocket
816                             win32_setsockopt
817                             win32_getsockopt
818                             win32_getpeername
819                             win32_getsockname
820                             win32_gethostname
821                             win32_gethostbyname
822                             win32_gethostbyaddr
823                             win32_getprotobyname
824                             win32_getprotobynumber
825                             win32_getservbyname
826                             win32_getservbyport
827                             win32_select
828                             win32_endhostent
829                             win32_endnetent
830                             win32_endprotoent
831                             win32_endservent
832                             win32_getnetent
833                             win32_getnetbyname
834                             win32_getnetbyaddr
835                             win32_getprotoent
836                             win32_getservent
837                             win32_sethostent
838                             win32_setnetent
839                             win32_setprotoent
840                             win32_setservent
841                             win32_getenv
842                             win32_putenv
843                             win32_perror
844                             win32_malloc
845                             win32_calloc
846                             win32_realloc
847                             win32_free
848                             win32_sleep
849                             win32_times
850                             win32_access
851                             win32_alarm
852                             win32_chmod
853                             win32_open_osfhandle
854                             win32_get_osfhandle
855                             win32_ioctl
856                             win32_link
857                             win32_unlink
858                             win32_utime
859                             win32_gettimeofday
860                             win32_uname
861                             win32_wait
862                             win32_waitpid
863                             win32_kill
864                             win32_str_os_error
865                             win32_opendir
866                             win32_readdir
867                             win32_telldir
868                             win32_seekdir
869                             win32_rewinddir
870                             win32_closedir
871                             win32_longpath
872                             win32_ansipath
873                             win32_os_id
874                             win32_getpid
875                             win32_crypt
876                             win32_dynaload
877                             win32_clearenv
878                             win32_stdin
879                             win32_stdout
880                             win32_stderr
881                             win32_ferror
882                             win32_feof
883                             win32_strerror
884                             win32_fprintf
885                             win32_printf
886                             win32_vfprintf
887                             win32_vprintf
888                             win32_fread
889                             win32_fwrite
890                             win32_fopen
891                             win32_fdopen
892                             win32_freopen
893                             win32_fclose
894                             win32_fputs
895                             win32_fputc
896                             win32_ungetc
897                             win32_getc
898                             win32_fileno
899                             win32_clearerr
900                             win32_fflush
901                             win32_ftell
902                             win32_fseek
903                             win32_fgetpos
904                             win32_fsetpos
905                             win32_rewind
906                             win32_tmpfile
907                             win32_setbuf
908                             win32_setvbuf
909                             win32_flushall
910                             win32_fcloseall
911                             win32_fgets
912                             win32_gets
913                             win32_fgetc
914                             win32_putc
915                             win32_puts
916                             win32_getchar
917                             win32_putchar
918                  ));
919 }
920 elsif ($ARGS{PLATFORM} eq 'vms') {
921     try_symbols(qw(
922                       Perl_cando
923                       Perl_cando_by_name
924                       Perl_closedir
925                       Perl_csighandler_init
926                       Perl_do_rmdir
927                       Perl_fileify_dirspec
928                       Perl_fileify_dirspec_ts
929                       Perl_fileify_dirspec_utf8
930                       Perl_fileify_dirspec_utf8_ts
931                       Perl_flex_fstat
932                       Perl_flex_lstat
933                       Perl_flex_stat
934                       Perl_kill_file
935                       Perl_my_chdir
936                       Perl_my_chmod
937                       Perl_my_crypt
938                       Perl_my_endpwent
939                       Perl_my_fclose
940                       Perl_my_fdopen
941                       Perl_my_fgetname
942                       Perl_my_flush
943                       Perl_my_fwrite
944                       Perl_my_gconvert
945                       Perl_my_getenv
946                       Perl_my_getenv_len
947                       Perl_my_getpwnam
948                       Perl_my_getpwuid
949                       Perl_my_gmtime
950                       Perl_my_kill
951                       Perl_my_killpg
952                       Perl_my_localtime
953                       Perl_my_mkdir
954                       Perl_my_sigaction
955                       Perl_my_symlink
956                       Perl_my_time
957                       Perl_my_tmpfile
958                       Perl_my_trnlnm
959                       Perl_my_utime
960                       Perl_my_waitpid
961                       Perl_opendir
962                       Perl_pathify_dirspec
963                       Perl_pathify_dirspec_ts
964                       Perl_pathify_dirspec_utf8
965                       Perl_pathify_dirspec_utf8_ts
966                       Perl_readdir
967                       Perl_readdir_r
968                       Perl_rename
969                       Perl_rmscopy
970                       Perl_rmsexpand
971                       Perl_rmsexpand_ts
972                       Perl_rmsexpand_utf8
973                       Perl_rmsexpand_utf8_ts
974                       Perl_seekdir
975                       Perl_sig_to_vmscondition
976                       Perl_telldir
977                       Perl_tounixpath
978                       Perl_tounixpath_ts
979                       Perl_tounixpath_utf8
980                       Perl_tounixpath_utf8_ts
981                       Perl_tounixspec
982                       Perl_tounixspec_ts
983                       Perl_tounixspec_utf8
984                       Perl_tounixspec_utf8_ts
985                       Perl_tovmspath
986                       Perl_tovmspath_ts
987                       Perl_tovmspath_utf8
988                       Perl_tovmspath_utf8_ts
989                       Perl_tovmsspec
990                       Perl_tovmsspec_ts
991                       Perl_tovmsspec_utf8
992                       Perl_tovmsspec_utf8_ts
993                       Perl_trim_unixpath
994                       Perl_vms_case_tolerant
995                       Perl_vms_do_aexec
996                       Perl_vms_do_exec
997                       Perl_vms_image_init
998                       Perl_vms_realpath
999                       Perl_vmssetenv
1000                       Perl_vmssetuserlnm
1001                       Perl_vmstrnenv
1002                       PerlIO_openn
1003                  ));
1004 }
1005 elsif ($ARGS{PLATFORM} eq 'os2') {
1006     try_symbols(qw(
1007                       ctermid
1008                       get_sysinfo
1009                       Perl_OS2_init
1010                       Perl_OS2_init3
1011                       Perl_OS2_term
1012                       OS2_Perl_data
1013                       dlopen
1014                       dlsym
1015                       dlerror
1016                       dlclose
1017                       dup2
1018                       dup
1019                       my_tmpfile
1020                       my_tmpnam
1021                       my_flock
1022                       my_rmdir
1023                       my_mkdir
1024                       my_getpwuid
1025                       my_getpwnam
1026                       my_getpwent
1027                       my_setpwent
1028                       my_endpwent
1029                       fork_with_resources
1030                       croak_with_os2error
1031                       setgrent
1032                       endgrent
1033                       getgrent
1034                       malloc_mutex
1035                       threads_mutex
1036                       nthreads
1037                       nthreads_cond
1038                       os2_cond_wait
1039                       os2_stat
1040                       os2_execname
1041                       async_mssleep
1042                       msCounter
1043                       InfoTable
1044                       pthread_join
1045                       pthread_create
1046                       pthread_detach
1047                       XS_Cwd_change_drive
1048                       XS_Cwd_current_drive
1049                       XS_Cwd_extLibpath
1050                       XS_Cwd_extLibpath_set
1051                       XS_Cwd_sys_abspath
1052                       XS_Cwd_sys_chdir
1053                       XS_Cwd_sys_cwd
1054                       XS_Cwd_sys_is_absolute
1055                       XS_Cwd_sys_is_relative
1056                       XS_Cwd_sys_is_rooted
1057                       XS_DynaLoader_mod2fname
1058                       XS_File__Copy_syscopy
1059                       Perl_Register_MQ
1060                       Perl_Deregister_MQ
1061                       Perl_Serve_Messages
1062                       Perl_Process_Messages
1063                       init_PMWIN_entries
1064                       PMWIN_entries
1065                       Perl_hab_GET
1066                       loadByOrdinal
1067                       pExtFCN
1068                       os2error
1069                       ResetWinError
1070                       CroakWinError
1071                       PL_do_undump
1072                  ));
1073 }
1074 elsif ($ARGS{PLATFORM} eq 'netware') {
1075     try_symbols(qw(
1076                         Perl_init_os_extras
1077                         Perl_thread_create
1078                         Perl_nw5_init
1079                         RunPerl
1080                         AllocStdPerl
1081                         FreeStdPerl
1082                         do_spawn2
1083                         do_aspawn
1084                         nw_uname
1085                         nw_stdin
1086                         nw_stdout
1087                         nw_stderr
1088                         nw_feof
1089                         nw_ferror
1090                         nw_fopen
1091                         nw_fclose
1092                         nw_clearerr
1093                         nw_getc
1094                         nw_fgets
1095                         nw_fputc
1096                         nw_fputs
1097                         nw_fflush
1098                         nw_ungetc
1099                         nw_fileno
1100                         nw_fdopen
1101                         nw_freopen
1102                         nw_fread
1103                         nw_fwrite
1104                         nw_setbuf
1105                         nw_setvbuf
1106                         nw_vfprintf
1107                         nw_ftell
1108                         nw_fseek
1109                         nw_rewind
1110                         nw_tmpfile
1111                         nw_fgetpos
1112                         nw_fsetpos
1113                         nw_dup
1114                         nw_access
1115                         nw_chmod
1116                         nw_chsize
1117                         nw_close
1118                         nw_dup2
1119                         nw_flock
1120                         nw_isatty
1121                         nw_link
1122                         nw_lseek
1123                         nw_stat
1124                         nw_mktemp
1125                         nw_open
1126                         nw_read
1127                         nw_rename
1128                         nw_setmode
1129                         nw_unlink
1130                         nw_utime
1131                         nw_write
1132                         nw_chdir
1133                         nw_rmdir
1134                         nw_closedir
1135                         nw_opendir
1136                         nw_readdir
1137                         nw_rewinddir
1138                         nw_seekdir
1139                         nw_telldir
1140                         nw_htonl
1141                         nw_htons
1142                         nw_ntohl
1143                         nw_ntohs
1144                         nw_accept
1145                         nw_bind
1146                         nw_connect
1147                         nw_endhostent
1148                         nw_endnetent
1149                         nw_endprotoent
1150                         nw_endservent
1151                         nw_gethostbyaddr
1152                         nw_gethostbyname
1153                         nw_gethostent
1154                         nw_gethostname
1155                         nw_getnetbyaddr
1156                         nw_getnetbyname
1157                         nw_getnetent
1158                         nw_getpeername
1159                         nw_getprotobyname
1160                         nw_getprotobynumber
1161                         nw_getprotoent
1162                         nw_getservbyname
1163                         nw_getservbyport
1164                         nw_getservent
1165                         nw_getsockname
1166                         nw_getsockopt
1167                         nw_inet_addr
1168                         nw_listen
1169                         nw_socket
1170                         nw_recv
1171                         nw_recvfrom
1172                         nw_select
1173                         nw_send
1174                         nw_sendto
1175                         nw_sethostent
1176                         nw_setnetent
1177                         nw_setprotoent
1178                         nw_setservent
1179                         nw_setsockopt
1180                         nw_inet_ntoa
1181                         nw_shutdown
1182                         nw_crypt
1183                         nw_execvp
1184                         nw_kill
1185                         nw_Popen
1186                         nw_Pclose
1187                         nw_Pipe
1188                         nw_times
1189                         nw_waitpid
1190                         nw_getpid
1191                         nw_spawnvp
1192                         nw_os_id
1193                         nw_open_osfhandle
1194                         nw_get_osfhandle
1195                         nw_abort
1196                         nw_sleep
1197                         nw_wait
1198                         nw_dynaload
1199                         nw_strerror
1200                         fnFpSetMode
1201                         fnInsertHashListAddrs
1202                         fnGetHashListAddrs
1203                         Perl_deb
1204                         Perl_sv_setsv
1205                         Perl_sv_catsv
1206                         Perl_sv_catpvn
1207                         Perl_sv_2pv
1208                         nw_freeenviron
1209                         Remove_Thread_Ctx
1210                  ));
1211 }
1212
1213 # When added this code was only run for Win32 and WinCE
1214 # Currently only Win32 links static extensions into the shared library.
1215 # The WinCE makefile doesn't appear to support static extensions, so this code
1216 # can't have any effect there.
1217 # The NetWare Makefile doesn't support static extensions (and hardcodes the
1218 # list of dynamic extensions, and the rules to build them)
1219 # For *nix (and presumably OS/2) with a shared libperl, Makefile.SH compiles
1220 # static extensions with -fPIC, but links them to perl, not libperl.so
1221 # The VMS build scripts don't yet implement static extensions at all.
1222
1223 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
1224     # records of type boot_module for statically linked modules (except Dynaloader)
1225     my $static_ext = $Config{static_ext} // "";
1226     $static_ext =~ s/\//__/g;
1227     $static_ext =~ s/\bDynaLoader\b//;
1228     try_symbols(map {"boot_$_"} grep {/\S/} split /\s+/, $static_ext);
1229     try_symbols("init_Win32CORE") if $static_ext =~ /\bWin32CORE\b/;
1230 }
1231
1232 if ($ARGS{PLATFORM} eq 'os2') {
1233     my (%mapped, @missing);
1234     open MAP, 'miniperl.map' or die 'Cannot read miniperl.map';
1235     /^\s*[\da-f:]+\s+(\w+)/i and $mapped{$1}++ foreach <MAP>;
1236     close MAP or die 'Cannot close miniperl.map';
1237
1238     @missing = grep { !exists $mapped{$_} }
1239                     keys %export;
1240     @missing = grep { !exists $exportperlmalloc{$_} } @missing;
1241     delete $export{$_} foreach @missing;
1242 }
1243
1244 ###############################################################################
1245
1246 # Now all symbols should be defined because next we are going to output them.
1247
1248 # Start with platform specific headers:
1249
1250 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
1251     my $dll = $define{PERL_DLL} ? $define{PERL_DLL} =~ s/\.dll$//ir
1252         : "perl$Config{api_revision}$Config{api_version}";
1253     print "LIBRARY $dll\n";
1254     # The DESCRIPTION module definition file statement is not supported
1255     # by VC7 onwards.
1256     if ($ARGS{CCTYPE} =~ /^(?:MSVC60|GCC)$/) {
1257         print "DESCRIPTION 'Perl interpreter'\n";
1258     }
1259     print "EXPORTS\n";
1260 }
1261 elsif ($ARGS{PLATFORM} eq 'os2') {
1262     (my $v = $]) =~ s/(\d\.\d\d\d)(\d\d)$/$1_$2/;
1263     $v .= '-thread' if $Config{archname} =~ /-thread/;
1264     (my $dll = $define{PERL_DLL}) =~ s/\.dll$//i;
1265     $v .= "\@$Config{perl_patchlevel}" if $Config{perl_patchlevel};
1266     my $d = "DESCRIPTION '\@#perl5-porters\@perl.org:$v#\@ Perl interpreter, configured as $Config{config_args}'";
1267     $d = substr($d, 0, 249) . "...'" if length $d > 253;
1268     print <<"---EOP---";
1269 LIBRARY '$dll' INITINSTANCE TERMINSTANCE
1270 $d
1271 STACKSIZE 32768
1272 CODE LOADONCALL
1273 DATA LOADONCALL NONSHARED MULTIPLE
1274 EXPORTS
1275 ---EOP---
1276 }
1277 elsif ($ARGS{PLATFORM} eq 'aix') {
1278     my $OSVER = `uname -v`;
1279     chop $OSVER;
1280     my $OSREL = `uname -r`;
1281     chop $OSREL;
1282     if ($OSVER > 4 || ($OSVER == 4 && $OSREL >= 3)) {
1283         print "#! ..\n";
1284     } else {
1285         print "#!\n";
1286     }
1287 }
1288 elsif ($ARGS{PLATFORM} eq 'netware') {
1289         if ($ARGS{FILETYPE} eq 'def') {
1290         print "LIBRARY perl$Config{api_revision}$Config{api_version}\n";
1291         print "DESCRIPTION 'Perl interpreter for NetWare'\n";
1292         print "EXPORTS\n";
1293         }
1294 }
1295
1296 # Then the symbols
1297
1298 my @symbols = $fold ? sort {lc $a cmp lc $b} keys %export : sort keys %export;
1299 foreach my $symbol (@symbols) {
1300     if (PLATFORM eq 'win32' || PLATFORM eq 'wince') {
1301         # Remembering the origin file of each symbol is an alternative to PL_ matching
1302         if (substr($symbol, 0, 3) eq 'PL_') {
1303             print "\t$symbol DATA\n";
1304         }
1305         else {
1306             print "\t$symbol\n";
1307         }
1308     }
1309     elsif (PLATFORM eq 'os2') {
1310         printf qq(    %-31s \@%s\n),
1311           qq("$symbol"), $ordinal{$symbol} || ++$sym_ord;
1312         printf qq(    %-31s \@%s\n),
1313           qq("$exportperlmalloc{$symbol}" = "$symbol"),
1314           $ordinal{$exportperlmalloc{$symbol}} || ++$sym_ord
1315           if $exportperlmalloc and exists $exportperlmalloc{$symbol};
1316     }
1317     elsif (PLATFORM eq 'netware') {
1318         print "\t$symbol,\n";
1319     } else {
1320         print "$symbol\n";
1321     }
1322 }
1323
1324 # Then platform specific footers.
1325
1326 if ($ARGS{PLATFORM} eq 'os2') {
1327     print <<EOP;
1328     dll_perlmain=main
1329     fill_extLibpath
1330     dir_subst
1331     Perl_OS2_handler_install
1332
1333 ; LAST_ORDINAL=$sym_ord
1334 EOP
1335 }
1336
1337 1;