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[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 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 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 'netware';
79
80 # Add the compile-time options that miniperl was built with to %define.
81 # On Win32 these are not the same options as perl itself will be built
82 # with since miniperl is built with a canned config (one of the win32/
83 # config_H.*) and none of the BUILDOPT's that are set in the makefiles,
84 # but they do include some #define's that are hard-coded in various
85 # source files and header files and don't include any BUILDOPT's that
86 # the user might have chosen to disable because the canned configs are
87 # minimal configs that don't include any of those options.
88
89 my @options = sort(Config::bincompat_options(), Config::non_bincompat_options());
90 print STDERR "Options: (@options)\n" unless $ARGS{PLATFORM} eq 'test';
91 $define{$_} = 1 foreach @options;
92
93 my %exportperlmalloc =
94     (
95        Perl_malloc              =>      "malloc",
96        Perl_mfree               =>      "free",
97        Perl_realloc             =>      "realloc",
98        Perl_calloc              =>      "calloc",
99     );
100
101 my $exportperlmalloc = $ARGS{PLATFORM} eq 'os2';
102
103 my $config_h = 'config.h';
104 open(CFG, '<', $config_h) || die "Cannot open $config_h: $!\n";
105 while (<CFG>) {
106     $define{$1} = 1 if /^\s*\#\s*define\s+(MYMALLOC|MULTIPLICITY
107                                            |KILL_BY_SIGPRC
108                                            |(?:PERL|USE|HAS)_\w+)\b/x;
109 }
110 close(CFG);
111
112 # perl.h logic duplication begins
113
114 if ($define{USE_ITHREADS}) {
115     if (!$define{MULTIPLICITY}) {
116         $define{MULTIPLICITY} = 1;
117     }
118 }
119
120 $define{PERL_IMPLICIT_CONTEXT} ||=
121     $define{USE_ITHREADS} ||
122     $define{MULTIPLICITY} ;
123
124 if ($define{USE_ITHREADS} && $ARGS{PLATFORM} ne 'win32' && $ARGS{PLATFORM} ne 'netware') {
125     $define{USE_REENTRANT_API} = 1;
126 }
127
128 if (! $define{NO_LOCALE}) {
129     if ( ! $define{NO_POSIX_2008_LOCALE}
130         && $define{HAS_NEWLOCALE}
131         && $define{HAS_USELOCALE}
132         && $define{HAS_DUPLOCALE}
133         && $define{HAS_FREELOCALE})
134     {
135         $define{HAS_POSIX_2008_LOCALE} = 1;
136         $define{USE_LOCALE} = 1;
137     }
138     elsif ($define{HAS_SETLOCALE}) {
139         $define{USE_LOCALE} = 1;
140     }
141 }
142
143 # https://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B#Internal_version_numbering
144 my $cctype = $ARGS{CCTYPE} =~ s/MSVC//r;
145 if (! $define{HAS_SETLOCALE} && $define{HAS_POSIX_2008_LOCALE}) {
146     $define{USE_POSIX_2008_LOCALE} = 1;
147     $define{USE_THREAD_SAFE_LOCALE} = 1;
148 }
149 elsif (   ($define{USE_ITHREADS} || $define{USE_THREAD_SAFE_LOCALE})
150        && (    $define{HAS_POSIX_2008_LOCALE}
151            || ($ARGS{PLATFORM} eq 'win32' && (   $cctype !~ /\D/
152                                               && $cctype >= 80)))
153        && ! $define{NO_THREAD_SAFE_LOCALE})
154 {
155     $define{USE_THREAD_SAFE_LOCALE} = 1 unless $define{USE_THREAD_SAFE_LOCALE};
156     $define{USE_POSIX_2008_LOCALE} = 1 if $define{HAS_POSIX_2008_LOCALE};
157 }
158
159 if (   $ARGS{PLATFORM} eq 'win32'
160     && $define{USE_THREAD_SAFE_LOCALE}
161     && $cctype < 140)
162 {
163     $define{TS_W32_BROKEN_LOCALECONV} = 1;
164 }
165
166 # perl.h logic duplication ends
167
168 print STDERR "Defines: (" . join(' ', sort keys %define) . ")\n"
169      unless $ARGS{PLATFORM} eq 'test';
170
171 my $sym_ord = 0;
172 my %ordinal;
173
174 if ($ARGS{PLATFORM} eq 'os2') {
175     if (open my $fh, '<', 'perl5.def') {
176       while (<$fh>) {
177         last if /^\s*EXPORTS\b/;
178       }
179       while (<$fh>) {
180         $ordinal{$1} = $2 if /^\s*"(\w+)"\s*(?:=\s*"\w+"\s*)?\@(\d+)\s*$/;
181         # This allows skipping ordinals which were used in older versions
182         $sym_ord = $1 if /^\s*;\s*LAST_ORDINAL\s*=\s*(\d+)\s*$/;
183       }
184       $sym_ord < $_ and $sym_ord = $_ for values %ordinal; # Take the max
185     }
186 }
187
188 my %skip;
189 # All platforms export boot_DynaLoader unconditionally.
190 my %export = ( boot_DynaLoader => 1 );
191
192 sub try_symbols {
193     foreach my $symbol (@_) {
194         ++$export{$symbol} unless exists $skip{$symbol};
195     }
196 }
197
198 sub readvar {
199     # $hash is the hash that we're adding to. For one of our callers, it will
200     # actually be the skip hash but that doesn't affect the intent of what
201     # we're doing, as in that case we skip adding something to the skip hash
202     # for the second time.
203
204     my $file = $ARGS{TARG_DIR} . shift;
205     my $hash = shift;
206     my $proc = shift;
207     open my $vars, '<', $file or die die "Cannot open $file: $!\n";
208
209     while (<$vars>) {
210         # All symbols have a Perl_ prefix because that's what embed.h sticks
211         # in front of them.  The A?I?S?C? is strictly speaking wrong.
212         next unless /\bPERLVAR(A?I?S?C?)\(([IGT]),\s*(\w+)/;
213
214         my $var = "PL_$3";
215         my $symbol = $proc ? &$proc($1,$2,$3) : $var;
216         ++$hash->{$symbol} unless exists $skip{$var};
217     }
218 }
219
220 if ($ARGS{PLATFORM} ne 'os2') {
221     ++$skip{$_} foreach qw(
222                      PL_cryptseen
223                      PL_opsave
224                      Perl_GetVars
225                      Perl_dump_fds
226                      Perl_my_bcopy
227                      Perl_my_bzero
228                      Perl_my_chsize
229                      Perl_my_htonl
230                      Perl_my_memcmp
231                      Perl_my_memset
232                      Perl_my_ntohl
233                      Perl_my_swap
234                          );
235     if ($ARGS{PLATFORM} eq 'vms') {
236         ++$skip{PL_statusvalue_posix};
237         # This is a wrapper if we have symlink, not a replacement
238         # if we don't.
239         ++$skip{Perl_my_symlink} unless $Config{d_symlink};
240     } else {
241         ++$skip{PL_statusvalue_vms};
242         ++$skip{PL_perllib_sep};
243         if ($ARGS{PLATFORM} ne 'aix') {
244             ++$skip{$_} foreach qw(
245                                 PL_DBcv
246                                 PL_generation
247                                 PL_lastgotoprobe
248                                 PL_modcount
249                                 main
250                                  );
251         }
252     }
253 }
254
255 if ($ARGS{PLATFORM} ne 'vms') {
256     # VMS does its own thing for these symbols.
257     ++$skip{$_} foreach qw(
258                         PL_sig_handlers_initted
259                         PL_sig_ignoring
260                         PL_sig_defaulting
261                          );
262     if ($ARGS{PLATFORM} ne 'win32') {
263         ++$skip{$_} foreach qw(
264                             Perl_do_spawn
265                             Perl_do_spawn_nowait
266                             Perl_do_aspawn
267                              );
268     }
269 }
270
271 if ($ARGS{PLATFORM} ne 'win32') {
272     ++$skip{$_} foreach qw(
273                     Perl_my_setlocale
274                          );
275 }
276
277 unless ($define{UNLINK_ALL_VERSIONS}) {
278     ++$skip{Perl_unlnk};
279 }
280
281 unless ($define{'DEBUGGING'}) {
282     ++$skip{$_} foreach qw(
283                     Perl_debop
284                     Perl_debprofdump
285                     Perl_debstack
286                     Perl_debstackptrs
287                     Perl_pad_sv
288                     Perl_pad_setsv
289                     Perl__setlocale_debug_string
290                     Perl_set_padlist
291                     Perl_hv_assert
292                     PL_watchaddr
293                     PL_watchok
294                          );
295 }
296
297 if ($define{'PERL_IMPLICIT_SYS'}) {
298     ++$skip{$_} foreach qw(
299                     Perl_my_popen
300                     Perl_my_pclose
301                          );
302     ++$export{$_} foreach qw(perl_get_host_info perl_alloc_override);
303     ++$export{perl_clone_host} if $define{USE_ITHREADS};
304 }
305 else {
306     ++$skip{$_} foreach qw(
307                     PL_Mem
308                     PL_MemShared
309                     PL_MemParse
310                     PL_Env
311                     PL_StdIO
312                     PL_LIO
313                     PL_Dir
314                     PL_Sock
315                     PL_Proc
316                     perl_alloc_using
317                     perl_clone_using
318                          );
319 }
320
321 if (!$define{'PERL_COPY_ON_WRITE'} || $define{'PERL_NO_COW'}) {
322     ++$skip{Perl_sv_setsv_cow};
323 }
324
325 unless ($define{PERL_SAWAMPERSAND}) {
326     ++$skip{PL_sawampersand};
327 }
328
329 unless ($define{'USE_REENTRANT_API'}) {
330     ++$skip{PL_reentrant_buffer};
331 }
332
333 if ($define{'MYMALLOC'}) {
334     try_symbols(qw(
335                     Perl_dump_mstats
336                     Perl_get_mstats
337                     Perl_strdup
338                     Perl_putenv
339                     MallocCfg_ptr
340                     MallocCfgP_ptr
341                     ));
342     unless ($define{USE_ITHREADS}) {
343         ++$skip{PL_malloc_mutex}
344     }
345 }
346 else {
347     ++$skip{$_} foreach qw(
348                     PL_malloc_mutex
349                     Perl_dump_mstats
350                     Perl_get_mstats
351                     MallocCfg_ptr
352                     MallocCfgP_ptr
353                          );
354 }
355
356 if ($define{'PERL_USE_SAFE_PUTENV'}) {
357     ++$skip{PL_use_safe_putenv};
358 }
359
360 unless ($define{'USE_ITHREADS'}) {
361     ++$skip{PL_thr_key};
362     ++$skip{PL_user_prop_mutex};
363     ++$skip{PL_user_def_props_aTHX};
364 }
365
366 # USE_5005THREADS symbols. Kept as reference for easier removal
367 ++$skip{$_} foreach qw(
368                     PL_sv_mutex
369                     PL_strtab_mutex
370                     PL_svref_mutex
371                     PL_cred_mutex
372                     PL_eval_mutex
373                     PL_fdpid_mutex
374                     PL_sv_lock_mutex
375                     PL_eval_cond
376                     PL_eval_owner
377                     PL_threads_mutex
378                     PL_nthreads
379                     PL_nthreads_cond
380                     PL_threadnum
381                     PL_threadsv_names
382                     PL_thrsv
383                     PL_vtbl_mutex
384                     Perl_condpair_magic
385                     Perl_new_struct_thread
386                     Perl_per_thread_magicals
387                     Perl_thread_create
388                     Perl_find_threadsv
389                     Perl_unlock_condpair
390                     Perl_magic_mutexfree
391                     Perl_sv_lock
392                      );
393
394 unless ($define{'USE_ITHREADS'}) {
395     ++$skip{$_} foreach qw(
396                     PL_keyword_plugin_mutex
397                     PL_check_mutex
398                     PL_op_mutex
399                     PL_regex_pad
400                     PL_regex_padav
401                     PL_dollarzero_mutex
402                     PL_env_mutex
403                     PL_hints_mutex
404                     PL_locale_mutex
405                     PL_lc_numeric_mutex
406                     PL_lc_numeric_mutex_depth
407                     PL_my_ctx_mutex
408                     PL_perlio_mutex
409                     PL_stashpad
410                     PL_stashpadix
411                     PL_stashpadmax
412                     Perl_alloccopstash
413                     Perl_allocfilegv
414                     Perl_clone_params_del
415                     Perl_clone_params_new
416                     Perl_parser_dup
417                     Perl_dirp_dup
418                     Perl_cx_dup
419                     Perl_si_dup
420                     Perl_any_dup
421                     Perl_ss_dup
422                     Perl_fp_dup
423                     Perl_gp_dup
424                     Perl_he_dup
425                     Perl_mg_dup
426                     Perl_re_dup_guts
427                     Perl_sv_dup
428                     Perl_sv_dup_inc
429                     Perl_rvpv_dup
430                     Perl_hek_dup
431                     Perl_sys_intern_dup
432                     perl_clone
433                     perl_clone_using
434                     Perl_stashpv_hvname_match
435                     Perl_regdupe_internal
436                     Perl_newPADOP
437                          );
438 }
439
440 if (      $define{NO_LOCALE}
441     || (! $define{USE_ITHREADS} && ! $define{USE_THREAD_SAFE_LOCALE}))
442 {
443     ++$skip{$_} foreach qw(
444         PL_C_locale_obj
445         PL_curlocales
446     );
447 }
448
449 unless ( $define{'HAS_NEWLOCALE'}
450     &&   $define{'HAS_FREELOCALE'}
451     &&   $define{'HAS_USELOCALE'}
452     && ! $define{'NO_POSIX_2008_LOCALE'})
453 {
454     ++$skip{$_} foreach qw(
455         PL_C_locale_obj
456         PL_underlying_numeric_obj
457     );
458 }
459
460 unless ($define{'PERL_IMPLICIT_CONTEXT'}) {
461     ++$skip{$_} foreach qw(
462                     PL_my_cxt_index
463                     PL_my_cxt_list
464                     PL_my_cxt_size
465                     PL_my_cxt_keys
466                     PL_my_cxt_keys_size
467                     Perl_croak_nocontext
468                     Perl_die_nocontext
469                     Perl_deb_nocontext
470                     Perl_form_nocontext
471                     Perl_load_module_nocontext
472                     Perl_mess_nocontext
473                     Perl_warn_nocontext
474                     Perl_warner_nocontext
475                     Perl_newSVpvf_nocontext
476                     Perl_sv_catpvf_nocontext
477                     Perl_sv_setpvf_nocontext
478                     Perl_sv_catpvf_mg_nocontext
479                     Perl_sv_setpvf_mg_nocontext
480                     Perl_my_cxt_init
481                     Perl_my_cxt_index
482                          );
483 }
484
485 if ($define{USE_THREAD_SAFE_LOCALE}) {
486     ++$skip{PL_lc_numeric_mutex};
487     ++$skip{PL_lc_numeric_mutex_depth};
488     if (! $define{TS_W32_BROKEN_LOCALECONV}) {
489         ++$skip{PL_locale_mutex};
490     }
491 }
492
493 unless ($define{'USE_DTRACE'}) {
494     ++$skip{$_} foreach qw(
495                     Perl_dtrace_probe_call
496                     Perl_dtrace_probe_load
497                     Perl_dtrace_probe_op
498                     Perl_dtrace_probe_phase
499                 );
500 }
501
502 unless ($define{'PERL_NEED_APPCTX'}) {
503     ++$skip{PL_appctx};
504 }
505
506 unless ($define{'PERL_NEED_TIMESBASE'}) {
507     ++$skip{PL_timesbase};
508 }
509
510 unless ($define{'DEBUG_LEAKING_SCALARS'}) {
511     ++$skip{PL_sv_serial};
512 }
513
514 unless ($define{'DEBUG_LEAKING_SCALARS_FORK_DUMP'}) {
515     ++$skip{PL_dumper_fd};
516 }
517
518 unless ($define{'PERL_DONT_CREATE_GVSV'}) {
519     ++$skip{Perl_gv_SVadd};
520 }
521
522 unless ($define{'PERL_USES_PL_PIDSTATUS'}) {
523     ++$skip{PL_pidstatus};
524 }
525
526 unless ($define{'PERL_TRACK_MEMPOOL'}) {
527     ++$skip{PL_memory_debug_header};
528 }
529
530 unless ($define{'MULTIPLICITY'}) {
531     ++$skip{$_} foreach qw(
532                     PL_interp_size
533                     PL_interp_size_5_18_0
534                     PL_sv_yes
535                     PL_sv_undef
536                     PL_sv_no
537                     PL_sv_zero
538                          );
539 }
540
541 unless ($define{'PERL_GLOBAL_STRUCT'}) {
542     ++$skip{PL_global_struct_size};
543 }
544
545 unless ($define{'PERL_GLOBAL_STRUCT_PRIVATE'}) {
546     ++$skip{$_} foreach qw(
547                     PL_my_cxt_keys
548                     PL_my_cxt_keys_size
549                     Perl_my_cxt_index
550                          );
551 }
552
553 unless ($define{HAS_MMAP}) {
554     ++$skip{PL_mmap_page_size};
555 }
556
557 if ($define{HAS_SIGACTION}) {
558     ++$skip{PL_sig_trapped};
559
560     if ($ARGS{PLATFORM} eq 'vms') {
561         # FAKE_PERSISTENT_SIGNAL_HANDLERS defined as !defined(HAS_SIGACTION)
562         ++$skip{PL_sig_ignoring};
563         ++$skip{PL_sig_handlers_initted} unless $define{KILL_BY_SIGPRC};
564     }
565 }
566
567 if ($ARGS{PLATFORM} eq 'vms' && !$define{KILL_BY_SIGPRC}) {
568     # FAKE_DEFAULT_SIGNAL_HANDLERS defined as KILL_BY_SIGPRC
569     ++$skip{Perl_csighandler_init};
570     ++$skip{Perl_my_kill};
571     ++$skip{Perl_sig_to_vmscondition};
572     ++$skip{PL_sig_defaulting};
573     ++$skip{PL_sig_handlers_initted} unless !$define{HAS_SIGACTION};
574 }
575
576 if ($define{'HAS_STRNLEN'})
577 {
578     ++$skip{Perl_my_strnlen};
579 }
580
581 unless ($define{USE_LOCALE_COLLATE}) {
582     ++$skip{$_} foreach qw(
583                     PL_collation_ix
584                     PL_collation_name
585                     PL_collation_standard
586                     PL_collxfrm_base
587                     PL_collxfrm_mult
588                     Perl_sv_collxfrm
589                     Perl_sv_collxfrm_flags
590                     PL_strxfrm_NUL_replacement
591                     PL_strxfrm_is_behaved
592                     PL_strxfrm_max_cp
593                          );
594 }
595
596 unless ($define{USE_LOCALE_NUMERIC}) {
597     ++$skip{$_} foreach qw(
598                     PL_numeric_local
599                     PL_numeric_name
600                     PL_numeric_radix_sv
601                     PL_numeric_standard
602                     PL_numeric_underlying
603                     PL_numeric_underlying_is_standard
604                     PL_underlying_numeric_obj
605                          );
606 }
607
608 unless ($define{'USE_C_BACKTRACE'}) {
609     ++$skip{Perl_get_c_backtrace_dump};
610     ++$skip{Perl_dump_c_backtrace};
611 }
612
613 unless ($define{HAVE_INTERP_INTERN}) {
614     ++$skip{$_} foreach qw(
615                     Perl_sys_intern_clear
616                     Perl_sys_intern_dup
617                     Perl_sys_intern_init
618                     PL_sys_intern
619                          );
620 }
621
622 if ($define{HAS_SIGNBIT}) {
623     ++$skip{Perl_signbit};
624 }
625
626 if ($define{'PERL_GLOBAL_STRUCT'}) {
627     readvar('perlvars.h', \%skip);
628     # This seems like the least ugly way to cope with the fact that PL_sh_path
629     # is mentioned in perlvar.h and globvar.sym, and always exported.
630     delete $skip{PL_sh_path};
631     ++$export{Perl_GetVars};
632     try_symbols(qw(PL_Vars PL_VarsPtr))
633       unless $ARGS{CCTYPE} eq 'GCC' || $define{PERL_GLOBAL_STRUCT_PRIVATE};
634 } else {
635     ++$skip{$_} foreach qw(Perl_init_global_struct Perl_free_global_struct);
636 }
637
638 ++$skip{PL_op_exec_cnt}
639     unless $define{PERL_TRACE_OPS};
640
641 ++$skip{PL_hash_chars}
642     unless $define{PERL_USE_SINGLE_CHAR_HASH_CACHE};
643
644 # functions from *.sym files
645
646 my @syms = qw(globvar.sym);
647
648 # Symbols that are the public face of the PerlIO layers implementation
649 # These are in _addition to_ the public face of the abstraction
650 # and need to be exported to allow XS modules to implement layers
651 my @layer_syms = qw(
652                     PerlIOBase_binmode
653                     PerlIOBase_clearerr
654                     PerlIOBase_close
655                     PerlIOBase_dup
656                     PerlIOBase_eof
657                     PerlIOBase_error
658                     PerlIOBase_fileno
659                     PerlIOBase_open
660                     PerlIOBase_noop_fail
661                     PerlIOBase_noop_ok
662                     PerlIOBase_popped
663                     PerlIOBase_pushed
664                     PerlIOBase_read
665                     PerlIOBase_setlinebuf
666                     PerlIOBase_unread
667                     PerlIOBuf_bufsiz
668                     PerlIOBuf_close
669                     PerlIOBuf_dup
670                     PerlIOBuf_fill
671                     PerlIOBuf_flush
672                     PerlIOBuf_get_base
673                     PerlIOBuf_get_cnt
674                     PerlIOBuf_get_ptr
675                     PerlIOBuf_open
676                     PerlIOBuf_popped
677                     PerlIOBuf_pushed
678                     PerlIOBuf_read
679                     PerlIOBuf_seek
680                     PerlIOBuf_set_ptrcnt
681                     PerlIOBuf_tell
682                     PerlIOBuf_unread
683                     PerlIOBuf_write
684                     PerlIO_allocate
685                     PerlIO_apply_layera
686                     PerlIO_apply_layers
687                     PerlIO_arg_fetch
688                     PerlIO_debug
689                     PerlIO_define_layer
690                     PerlIO_find_layer
691                     PerlIO_isutf8
692                     PerlIO_layer_fetch
693                     PerlIO_list_alloc
694                     PerlIO_list_free
695                     PerlIO_modestr
696                     PerlIO_parse_layers
697                     PerlIO_pending
698                     PerlIO_perlio
699                     PerlIO_pop
700                     PerlIO_push
701                     PerlIO_sv_dup
702                     Perl_PerlIO_clearerr
703                     Perl_PerlIO_close
704                     Perl_PerlIO_context_layers
705                     Perl_PerlIO_eof
706                     Perl_PerlIO_error
707                     Perl_PerlIO_fileno
708                     Perl_PerlIO_fill
709                     Perl_PerlIO_flush
710                     Perl_PerlIO_get_base
711                     Perl_PerlIO_get_bufsiz
712                     Perl_PerlIO_get_cnt
713                     Perl_PerlIO_get_ptr
714                     Perl_PerlIO_read
715                     Perl_PerlIO_restore_errno
716                     Perl_PerlIO_save_errno
717                     Perl_PerlIO_seek
718                     Perl_PerlIO_set_cnt
719                     Perl_PerlIO_set_ptrcnt
720                     Perl_PerlIO_setlinebuf
721                     Perl_PerlIO_stderr
722                     Perl_PerlIO_stdin
723                     Perl_PerlIO_stdout
724                     Perl_PerlIO_tell
725                     Perl_PerlIO_unread
726                     Perl_PerlIO_write
727 );
728 if ($ARGS{PLATFORM} eq 'netware') {
729     push(@layer_syms,'PL_def_layerlist','PL_known_layers','PL_perlio');
730 }
731
732 # Export the symbols that make up the PerlIO abstraction, regardless
733 # of its implementation - read from a file
734 push @syms, 'perlio.sym';
735
736 # PerlIO with layers - export implementation
737 try_symbols(@layer_syms, 'perlsio_binmode');
738
739
740 unless ($define{'USE_QUADMATH'}) {
741   ++$skip{Perl_quadmath_format_needed};
742   ++$skip{Perl_quadmath_format_single};
743 }
744
745 ###############################################################################
746
747 # At this point all skip lists should be completed, as we are about to test
748 # many symbols against them.
749
750 {
751     my %seen;
752     my ($embed) = setup_embed($ARGS{TARG_DIR});
753     my $excludedre = $define{'NO_MATHOMS'} ? qr/[emib]/ : qr/[emi]/;
754
755     foreach (@$embed) {
756         my ($flags, $retval, $func, @args) = @$_;
757         next unless $func;
758         if (($flags =~ /[AXC]/ && $flags !~ $excludedre)
759             || (!$define{'NO_MATHOMS'} && $flags =~ /b/))
760         {
761             # public API, so export
762
763             # If a function is defined twice, for example before and after
764             # an #else, only export its name once. Important to do this test
765             # within the block, as the *first* definition may have flags which
766             # mean "don't export"
767             next if $seen{$func}++;
768             # Should we also skip adding the Perl_ prefix if $flags =~ /o/ ?
769             $func = "Perl_$func" if ($flags =~ /[pX]/ && $func !~ /^Perl_/);
770             ++$export{$func} unless exists $skip{$func};
771         }
772     }
773 }
774
775 foreach (@syms) {
776     my $syms = $ARGS{TARG_DIR} . $_;
777     open my $global, '<', $syms or die "failed to open $syms: $!\n";
778     while (<$global>) {
779         next unless /^([A-Za-z].*)/;
780         my $symbol = "$1";
781         ++$export{$symbol} unless exists $skip{$symbol};
782     }
783 }
784
785 # variables
786
787 if ($define{'MULTIPLICITY'} && $define{PERL_GLOBAL_STRUCT}) {
788     readvar('perlvars.h', \%export, sub { "Perl_" . $_[1] . $_[2] . "_ptr" });
789     # XXX AIX seems to want the perlvars.h symbols, for some reason
790     if ($ARGS{PLATFORM} eq 'aix' or $ARGS{PLATFORM} eq 'os2') { # OS/2 needs PL_thr_key
791         readvar('perlvars.h', \%export);
792     }
793 }
794 else {
795     unless ($define{'PERL_GLOBAL_STRUCT'}) {
796         readvar('perlvars.h', \%export);
797     }
798     unless ($define{MULTIPLICITY}) {
799         readvar('intrpvar.h', \%export);
800     }
801 }
802
803 # Oddities from PerlIO
804 # All have alternate implementations in perlio.c, so always exist.
805 # Should they be considered to be part of the API?
806 try_symbols(qw(
807                     PerlIO_binmode
808                     PerlIO_getpos
809                     PerlIO_init
810                     PerlIO_setpos
811                     PerlIO_tmpfile
812              ));
813
814 if ($ARGS{PLATFORM} eq 'win32') {
815     try_symbols(qw(
816                     win32_free_childdir
817                     win32_free_childenv
818                     win32_get_childdir
819                     win32_get_childenv
820                     win32_spawnvp
821                     Perl_init_os_extras
822                     Perl_thread_create
823                     Perl_win32_init
824                     Perl_win32_term
825                     RunPerl
826                     win32_async_check
827                     win32_errno
828                     win32_environ
829                     win32_abort
830                     win32_fstat
831                     win32_stat
832                     win32_pipe
833                     win32_popen
834                     win32_pclose
835                     win32_rename
836                     win32_setmode
837                     win32_chsize
838                     win32_lseek
839                     win32_tell
840                     win32_dup
841                     win32_dup2
842                     win32_open
843                     win32_close
844                     win32_eof
845                     win32_isatty
846                     win32_read
847                     win32_write
848                     win32_mkdir
849                     win32_rmdir
850                     win32_chdir
851                     win32_flock
852                     win32_execv
853                     win32_execvp
854                     win32_htons
855                     win32_ntohs
856                     win32_htonl
857                     win32_ntohl
858                     win32_inet_addr
859                     win32_inet_ntoa
860                     win32_socket
861                     win32_bind
862                     win32_listen
863                     win32_accept
864                     win32_connect
865                     win32_send
866                     win32_sendto
867                     win32_recv
868                     win32_recvfrom
869                     win32_shutdown
870                     win32_closesocket
871                     win32_ioctlsocket
872                     win32_setsockopt
873                     win32_getsockopt
874                     win32_getpeername
875                     win32_getsockname
876                     win32_gethostname
877                     win32_gethostbyname
878                     win32_gethostbyaddr
879                     win32_getprotobyname
880                     win32_getprotobynumber
881                     win32_getservbyname
882                     win32_getservbyport
883                     win32_select
884                     win32_endhostent
885                     win32_endnetent
886                     win32_endprotoent
887                     win32_endservent
888                     win32_getnetent
889                     win32_getnetbyname
890                     win32_getnetbyaddr
891                     win32_getprotoent
892                     win32_getservent
893                     win32_sethostent
894                     win32_setnetent
895                     win32_setprotoent
896                     win32_setservent
897                     win32_getenv
898                     win32_putenv
899                     win32_perror
900                     win32_malloc
901                     win32_calloc
902                     win32_realloc
903                     win32_free
904                     win32_sleep
905                     win32_pause
906                     win32_times
907                     win32_access
908                     win32_alarm
909                     win32_chmod
910                     win32_open_osfhandle
911                     win32_get_osfhandle
912                     win32_ioctl
913                     win32_link
914                     win32_unlink
915                     win32_utime
916                     win32_gettimeofday
917                     win32_uname
918                     win32_wait
919                     win32_waitpid
920                     win32_kill
921                     win32_str_os_error
922                     win32_opendir
923                     win32_readdir
924                     win32_telldir
925                     win32_seekdir
926                     win32_rewinddir
927                     win32_closedir
928                     win32_longpath
929                     win32_ansipath
930                     win32_os_id
931                     win32_getpid
932                     win32_crypt
933                     win32_dynaload
934                     win32_clearenv
935                     win32_stdin
936                     win32_stdout
937                     win32_stderr
938                     win32_ferror
939                     win32_feof
940                     win32_strerror
941                     win32_fprintf
942                     win32_printf
943                     win32_vfprintf
944                     win32_vprintf
945                     win32_fread
946                     win32_fwrite
947                     win32_fopen
948                     win32_fdopen
949                     win32_freopen
950                     win32_fclose
951                     win32_fputs
952                     win32_fputc
953                     win32_ungetc
954                     win32_getc
955                     win32_fileno
956                     win32_clearerr
957                     win32_fflush
958                     win32_ftell
959                     win32_fseek
960                     win32_fgetpos
961                     win32_fsetpos
962                     win32_rewind
963                     win32_tmpfile
964                     win32_setbuf
965                     win32_setvbuf
966                     win32_flushall
967                     win32_fcloseall
968                     win32_fgets
969                     win32_gets
970                     win32_fgetc
971                     win32_putc
972                     win32_puts
973                     win32_getchar
974                     win32_putchar
975                  ));
976 }
977 elsif ($ARGS{PLATFORM} eq 'vms') {
978     try_symbols(qw(
979                       Perl_cando
980                       Perl_cando_by_name
981                       Perl_closedir
982                       Perl_csighandler_init
983                       Perl_do_rmdir
984                       Perl_fileify_dirspec
985                       Perl_fileify_dirspec_ts
986                       Perl_fileify_dirspec_utf8
987                       Perl_fileify_dirspec_utf8_ts
988                       Perl_flex_fstat
989                       Perl_flex_lstat
990                       Perl_flex_stat
991                       Perl_kill_file
992                       Perl_my_chdir
993                       Perl_my_chmod
994                       Perl_my_crypt
995                       Perl_my_endpwent
996                       Perl_my_fclose
997                       Perl_my_fdopen
998                       Perl_my_fgetname
999                       Perl_my_flush
1000                       Perl_my_fwrite
1001                       Perl_my_gconvert
1002                       Perl_my_getenv
1003                       Perl_my_getenv_len
1004                       Perl_my_getpwnam
1005                       Perl_my_getpwuid
1006                       Perl_my_gmtime
1007                       Perl_my_kill
1008                       Perl_my_killpg
1009                       Perl_my_localtime
1010                       Perl_my_mkdir
1011                       Perl_my_sigaction
1012                       Perl_my_symlink
1013                       Perl_my_time
1014                       Perl_my_tmpfile
1015                       Perl_my_trnlnm
1016                       Perl_my_utime
1017                       Perl_my_waitpid
1018                       Perl_opendir
1019                       Perl_pathify_dirspec
1020                       Perl_pathify_dirspec_ts
1021                       Perl_pathify_dirspec_utf8
1022                       Perl_pathify_dirspec_utf8_ts
1023                       Perl_readdir
1024                       Perl_readdir_r
1025                       Perl_rename
1026                       Perl_rmscopy
1027                       Perl_rmsexpand
1028                       Perl_rmsexpand_ts
1029                       Perl_rmsexpand_utf8
1030                       Perl_rmsexpand_utf8_ts
1031                       Perl_seekdir
1032                       Perl_sig_to_vmscondition
1033                       Perl_telldir
1034                       Perl_tounixpath
1035                       Perl_tounixpath_ts
1036                       Perl_tounixpath_utf8
1037                       Perl_tounixpath_utf8_ts
1038                       Perl_tounixspec
1039                       Perl_tounixspec_ts
1040                       Perl_tounixspec_utf8
1041                       Perl_tounixspec_utf8_ts
1042                       Perl_tovmspath
1043                       Perl_tovmspath_ts
1044                       Perl_tovmspath_utf8
1045                       Perl_tovmspath_utf8_ts
1046                       Perl_tovmsspec
1047                       Perl_tovmsspec_ts
1048                       Perl_tovmsspec_utf8
1049                       Perl_tovmsspec_utf8_ts
1050                       Perl_trim_unixpath
1051                       Perl_vms_case_tolerant
1052                       Perl_vms_do_aexec
1053                       Perl_vms_do_exec
1054                       Perl_vms_image_init
1055                       Perl_vms_realpath
1056                       Perl_vmssetenv
1057                       Perl_vmssetuserlnm
1058                       Perl_vmstrnenv
1059                       PerlIO_openn
1060                  ));
1061 }
1062 elsif ($ARGS{PLATFORM} eq 'os2') {
1063     try_symbols(qw(
1064                       ctermid
1065                       get_sysinfo
1066                       Perl_OS2_init
1067                       Perl_OS2_init3
1068                       Perl_OS2_term
1069                       OS2_Perl_data
1070                       dlopen
1071                       dlsym
1072                       dlerror
1073                       dlclose
1074                       dup2
1075                       dup
1076                       my_tmpfile
1077                       my_tmpnam
1078                       my_flock
1079                       my_rmdir
1080                       my_mkdir
1081                       my_getpwuid
1082                       my_getpwnam
1083                       my_getpwent
1084                       my_setpwent
1085                       my_endpwent
1086                       fork_with_resources
1087                       croak_with_os2error
1088                       setgrent
1089                       endgrent
1090                       getgrent
1091                       malloc_mutex
1092                       threads_mutex
1093                       nthreads
1094                       nthreads_cond
1095                       os2_cond_wait
1096                       os2_stat
1097                       os2_execname
1098                       async_mssleep
1099                       msCounter
1100                       InfoTable
1101                       pthread_join
1102                       pthread_create
1103                       pthread_detach
1104                       XS_Cwd_change_drive
1105                       XS_Cwd_current_drive
1106                       XS_Cwd_extLibpath
1107                       XS_Cwd_extLibpath_set
1108                       XS_Cwd_sys_abspath
1109                       XS_Cwd_sys_chdir
1110                       XS_Cwd_sys_cwd
1111                       XS_Cwd_sys_is_absolute
1112                       XS_Cwd_sys_is_relative
1113                       XS_Cwd_sys_is_rooted
1114                       XS_DynaLoader_mod2fname
1115                       XS_File__Copy_syscopy
1116                       Perl_Register_MQ
1117                       Perl_Deregister_MQ
1118                       Perl_Serve_Messages
1119                       Perl_Process_Messages
1120                       init_PMWIN_entries
1121                       PMWIN_entries
1122                       Perl_hab_GET
1123                       loadByOrdinal
1124                       pExtFCN
1125                       os2error
1126                       ResetWinError
1127                       CroakWinError
1128                       PL_do_undump
1129                  ));
1130 }
1131 elsif ($ARGS{PLATFORM} eq 'netware') {
1132     try_symbols(qw(
1133                         Perl_init_os_extras
1134                         Perl_thread_create
1135                         Perl_nw5_init
1136                         RunPerl
1137                         AllocStdPerl
1138                         FreeStdPerl
1139                         do_spawn2
1140                         do_aspawn
1141                         nw_uname
1142                         nw_stdin
1143                         nw_stdout
1144                         nw_stderr
1145                         nw_feof
1146                         nw_ferror
1147                         nw_fopen
1148                         nw_fclose
1149                         nw_clearerr
1150                         nw_getc
1151                         nw_fgets
1152                         nw_fputc
1153                         nw_fputs
1154                         nw_fflush
1155                         nw_ungetc
1156                         nw_fileno
1157                         nw_fdopen
1158                         nw_freopen
1159                         nw_fread
1160                         nw_fwrite
1161                         nw_setbuf
1162                         nw_setvbuf
1163                         nw_vfprintf
1164                         nw_ftell
1165                         nw_fseek
1166                         nw_rewind
1167                         nw_tmpfile
1168                         nw_fgetpos
1169                         nw_fsetpos
1170                         nw_dup
1171                         nw_access
1172                         nw_chmod
1173                         nw_chsize
1174                         nw_close
1175                         nw_dup2
1176                         nw_flock
1177                         nw_isatty
1178                         nw_link
1179                         nw_lseek
1180                         nw_stat
1181                         nw_mktemp
1182                         nw_open
1183                         nw_read
1184                         nw_rename
1185                         nw_setmode
1186                         nw_unlink
1187                         nw_utime
1188                         nw_write
1189                         nw_chdir
1190                         nw_rmdir
1191                         nw_closedir
1192                         nw_opendir
1193                         nw_readdir
1194                         nw_rewinddir
1195                         nw_seekdir
1196                         nw_telldir
1197                         nw_htonl
1198                         nw_htons
1199                         nw_ntohl
1200                         nw_ntohs
1201                         nw_accept
1202                         nw_bind
1203                         nw_connect
1204                         nw_endhostent
1205                         nw_endnetent
1206                         nw_endprotoent
1207                         nw_endservent
1208                         nw_gethostbyaddr
1209                         nw_gethostbyname
1210                         nw_gethostent
1211                         nw_gethostname
1212                         nw_getnetbyaddr
1213                         nw_getnetbyname
1214                         nw_getnetent
1215                         nw_getpeername
1216                         nw_getprotobyname
1217                         nw_getprotobynumber
1218                         nw_getprotoent
1219                         nw_getservbyname
1220                         nw_getservbyport
1221                         nw_getservent
1222                         nw_getsockname
1223                         nw_getsockopt
1224                         nw_inet_addr
1225                         nw_listen
1226                         nw_socket
1227                         nw_recv
1228                         nw_recvfrom
1229                         nw_select
1230                         nw_send
1231                         nw_sendto
1232                         nw_sethostent
1233                         nw_setnetent
1234                         nw_setprotoent
1235                         nw_setservent
1236                         nw_setsockopt
1237                         nw_inet_ntoa
1238                         nw_shutdown
1239                         nw_crypt
1240                         nw_execvp
1241                         nw_kill
1242                         nw_Popen
1243                         nw_Pclose
1244                         nw_Pipe
1245                         nw_times
1246                         nw_waitpid
1247                         nw_getpid
1248                         nw_spawnvp
1249                         nw_os_id
1250                         nw_open_osfhandle
1251                         nw_get_osfhandle
1252                         nw_abort
1253                         nw_sleep
1254                         nw_wait
1255                         nw_dynaload
1256                         nw_strerror
1257                         fnFpSetMode
1258                         fnInsertHashListAddrs
1259                         fnGetHashListAddrs
1260                         Perl_deb
1261                         Perl_sv_setsv
1262                         Perl_sv_catsv
1263                         Perl_sv_catpvn
1264                         Perl_sv_2pv
1265                         nw_freeenviron
1266                         Remove_Thread_Ctx
1267                  ));
1268 }
1269
1270 # When added this code was only run for Win32 (and WinCE at the time)
1271 # Currently only Win32 links static extensions into the shared library.
1272 # The NetWare Makefile doesn't support static extensions (and hardcodes the
1273 # list of dynamic extensions, and the rules to build them)
1274 # For *nix (and presumably OS/2) with a shared libperl, Makefile.SH compiles
1275 # static extensions with -fPIC, but links them to perl, not libperl.so
1276 # The VMS build scripts don't yet implement static extensions at all.
1277
1278 if ($ARGS{PLATFORM} eq 'win32') {
1279     # records of type boot_module for statically linked modules (except Dynaloader)
1280     my $static_ext = $Config{static_ext} // "";
1281     $static_ext =~ s/\//__/g;
1282     $static_ext =~ s/\bDynaLoader\b//;
1283     try_symbols(map {"boot_$_"} grep {/\S/} split /\s+/, $static_ext);
1284     try_symbols("init_Win32CORE") if $static_ext =~ /\bWin32CORE\b/;
1285 }
1286
1287 if ($ARGS{PLATFORM} eq 'os2') {
1288     my (%mapped, @missing);
1289     open MAP, '<', 'miniperl.map' or die 'Cannot read miniperl.map';
1290     /^\s*[\da-f:]+\s+(\w+)/i and $mapped{$1}++ foreach <MAP>;
1291     close MAP or die 'Cannot close miniperl.map';
1292
1293     @missing = grep { !exists $mapped{$_} }
1294                     keys %export;
1295     @missing = grep { !exists $exportperlmalloc{$_} } @missing;
1296     delete $export{$_} foreach @missing;
1297 }
1298
1299 ###############################################################################
1300
1301 # Now all symbols should be defined because next we are going to output them.
1302
1303 # Start with platform specific headers:
1304
1305 if ($ARGS{PLATFORM} eq 'win32') {
1306     my $dll = $define{PERL_DLL} ? $define{PERL_DLL} =~ s/\.dll$//ir
1307         : "perl$Config{api_revision}$Config{api_version}";
1308     print "LIBRARY $dll\n";
1309     # The DESCRIPTION module definition file statement is not supported
1310     # by VC7 onwards.
1311     if ($ARGS{CCTYPE} eq 'GCC') {
1312         print "DESCRIPTION 'Perl interpreter'\n";
1313     }
1314     print "EXPORTS\n";
1315 }
1316 elsif ($ARGS{PLATFORM} eq 'os2') {
1317     (my $v = $]) =~ s/(\d\.\d\d\d)(\d\d)$/$1_$2/;
1318     $v .= '-thread' if $Config{archname} =~ /-thread/;
1319     (my $dll = $define{PERL_DLL}) =~ s/\.dll$//i;
1320     $v .= "\@$Config{perl_patchlevel}" if $Config{perl_patchlevel};
1321     my $d = "DESCRIPTION '\@#perl5-porters\@perl.org:$v#\@ Perl interpreter, configured as $Config{config_args}'";
1322     $d = substr($d, 0, 249) . "...'" if length $d > 253;
1323     print <<"---EOP---";
1324 LIBRARY '$dll' INITINSTANCE TERMINSTANCE
1325 $d
1326 STACKSIZE 32768
1327 CODE LOADONCALL
1328 DATA LOADONCALL NONSHARED MULTIPLE
1329 EXPORTS
1330 ---EOP---
1331 }
1332 elsif ($ARGS{PLATFORM} eq 'aix') {
1333     my $OSVER = `uname -v`;
1334     chop $OSVER;
1335     my $OSREL = `uname -r`;
1336     chop $OSREL;
1337     if ($OSVER > 4 || ($OSVER == 4 && $OSREL >= 3)) {
1338         print "#! ..\n";
1339     } else {
1340         print "#!\n";
1341     }
1342 }
1343 elsif ($ARGS{PLATFORM} eq 'netware') {
1344         if ($ARGS{FILETYPE} eq 'def') {
1345         print "LIBRARY perl$Config{api_revision}$Config{api_version}\n";
1346         print "DESCRIPTION 'Perl interpreter for NetWare'\n";
1347         print "EXPORTS\n";
1348         }
1349 }
1350
1351 # Then the symbols
1352
1353 my @symbols = $fold ? sort {lc $a cmp lc $b} keys %export : sort keys %export;
1354 foreach my $symbol (@symbols) {
1355     if (PLATFORM eq 'win32') {
1356         # Remembering the origin file of each symbol is an alternative to PL_ matching
1357         if (substr($symbol, 0, 3) eq 'PL_') {
1358             print "\t$symbol DATA\n";
1359         }
1360         else {
1361             print "\t$symbol\n";
1362         }
1363     }
1364     elsif (PLATFORM eq 'os2') {
1365         printf qq(    %-31s \@%s\n),
1366           qq("$symbol"), $ordinal{$symbol} || ++$sym_ord;
1367         printf qq(    %-31s \@%s\n),
1368           qq("$exportperlmalloc{$symbol}" = "$symbol"),
1369           $ordinal{$exportperlmalloc{$symbol}} || ++$sym_ord
1370           if $exportperlmalloc and exists $exportperlmalloc{$symbol};
1371     }
1372     elsif (PLATFORM eq 'netware') {
1373         print "\t$symbol,\n";
1374     } else {
1375         print "$symbol\n";
1376     }
1377 }
1378
1379 # Then platform specific footers.
1380
1381 if ($ARGS{PLATFORM} eq 'os2') {
1382     print <<EOP;
1383     dll_perlmain=main
1384     fill_extLibpath
1385     dir_subst
1386     Perl_OS2_handler_install
1387
1388 ; LAST_ORDINAL=$sym_ord
1389 EOP
1390 }
1391
1392 1;