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Don't include interpreter variable unless used
[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 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{$1} = 1 if /^\s*\#\s*define\s+(MYMALLOC|MULTIPLICITY
111                                            |KILL_BY_SIGPRC
112                                            |(?:PERL|USE|HAS)_\w+)\b/x;
113 }
114 close(CFG);
115
116 # perl.h logic duplication begins
117
118 if ($define{USE_ITHREADS}) {
119     if (!$define{MULTIPLICITY}) {
120         $define{MULTIPLICITY} = 1;
121     }
122 }
123
124 $define{PERL_IMPLICIT_CONTEXT} ||=
125     $define{USE_ITHREADS} ||
126     $define{MULTIPLICITY} ;
127
128 if ($define{USE_ITHREADS} && $ARGS{PLATFORM} ne 'win32' && $ARGS{PLATFORM} ne 'netware') {
129     $define{USE_REENTRANT_API} = 1;
130 }
131
132 # perl.h logic duplication ends
133
134 print STDERR "Defines: (" . join(' ', sort keys %define) . ")\n"
135      unless $ARGS{PLATFORM} eq 'test';
136
137 my $sym_ord = 0;
138 my %ordinal;
139
140 if ($ARGS{PLATFORM} eq 'os2') {
141     if (open my $fh, '<', 'perl5.def') {
142       while (<$fh>) {
143         last if /^\s*EXPORTS\b/;
144       }
145       while (<$fh>) {
146         $ordinal{$1} = $2 if /^\s*"(\w+)"\s*(?:=\s*"\w+"\s*)?\@(\d+)\s*$/;
147         # This allows skipping ordinals which were used in older versions
148         $sym_ord = $1 if /^\s*;\s*LAST_ORDINAL\s*=\s*(\d+)\s*$/;
149       }
150       $sym_ord < $_ and $sym_ord = $_ for values %ordinal; # Take the max
151     }
152 }
153
154 my %skip;
155 # All platforms export boot_DynaLoader unconditionally.
156 my %export = ( boot_DynaLoader => 1 );
157
158 sub try_symbols {
159     foreach my $symbol (@_) {
160         ++$export{$symbol} unless exists $skip{$symbol};
161     }
162 }
163
164 sub readvar {
165     # $hash is the hash that we're adding to. For one of our callers, it will
166     # actually be the skip hash but that doesn't affect the intent of what
167     # we're doing, as in that case we skip adding something to the skip hash
168     # for the second time.
169
170     my $file = $ARGS{TARG_DIR} . shift;
171     my $hash = shift;
172     my $proc = shift;
173     open my $vars, '<', $file or die die "Cannot open $file: $!\n";
174
175     while (<$vars>) {
176         # All symbols have a Perl_ prefix because that's what embed.h sticks
177         # in front of them.  The A?I?S?C? is strictly speaking wrong.
178         next unless /\bPERLVAR(A?I?S?C?)\(([IGT]),\s*(\w+)/;
179
180         my $var = "PL_$3";
181         my $symbol = $proc ? &$proc($1,$2,$3) : $var;
182         ++$hash->{$symbol} unless exists $skip{$var};
183     }
184 }
185
186 if ($ARGS{PLATFORM} ne 'os2') {
187     ++$skip{$_} foreach qw(
188                      PL_cryptseen
189                      PL_opsave
190                      Perl_GetVars
191                      Perl_dump_fds
192                      Perl_my_bcopy
193                      Perl_my_bzero
194                      Perl_my_chsize
195                      Perl_my_htonl
196                      Perl_my_memcmp
197                      Perl_my_memset
198                      Perl_my_ntohl
199                      Perl_my_swap
200                          );
201     if ($ARGS{PLATFORM} eq 'vms') {
202         ++$skip{PL_statusvalue_posix};
203         # This is a wrapper if we have symlink, not a replacement
204         # if we don't.
205         ++$skip{Perl_my_symlink} unless $Config{d_symlink};
206     } else {
207         ++$skip{PL_statusvalue_vms};
208         ++$skip{PL_perllib_sep};
209         if ($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_keyword_plugin_mutex
362                     PL_check_mutex
363                     PL_curlocales
364                     PL_op_mutex
365                     PL_regex_pad
366                     PL_regex_padav
367                     PL_dollarzero_mutex
368                     PL_hints_mutex
369                     PL_locale_mutex
370                     PL_lc_numeric_mutex
371                     PL_lc_numeric_mutex_depth
372                     PL_my_ctx_mutex
373                     PL_perlio_mutex
374                     PL_stashpad
375                     PL_stashpadix
376                     PL_stashpadmax
377                     Perl_alloccopstash
378                     Perl_allocfilegv
379                     Perl_clone_params_del
380                     Perl_clone_params_new
381                     Perl_parser_dup
382                     Perl_dirp_dup
383                     Perl_cx_dup
384                     Perl_si_dup
385                     Perl_any_dup
386                     Perl_ss_dup
387                     Perl_fp_dup
388                     Perl_gp_dup
389                     Perl_he_dup
390                     Perl_mg_dup
391                     Perl_re_dup_guts
392                     Perl_sv_dup
393                     Perl_sv_dup_inc
394                     Perl_rvpv_dup
395                     Perl_hek_dup
396                     Perl_sys_intern_dup
397                     perl_clone
398                     perl_clone_using
399                     Perl_stashpv_hvname_match
400                     Perl_regdupe_internal
401                     Perl_newPADOP
402                     PL_C_locale_obj
403                          );
404 }
405
406 unless ( $define{'HAS_NEWLOCALE'}
407     &&   $define{'HAS_FREELOCALE'}
408     &&   $define{'HAS_USELOCALE'}
409     && ! $define{'NO_POSIX_2008_LOCALE'})
410 {
411     ++$skip{$_} foreach qw(
412         PL_C_locale_obj
413         PL_underlying_numeric_obj
414     );
415 }
416
417 unless ($define{'PERL_IMPLICIT_CONTEXT'}) {
418     ++$skip{$_} foreach qw(
419                     PL_my_cxt_index
420                     PL_my_cxt_list
421                     PL_my_cxt_size
422                     PL_my_cxt_keys
423                     Perl_croak_nocontext
424                     Perl_die_nocontext
425                     Perl_deb_nocontext
426                     Perl_form_nocontext
427                     Perl_load_module_nocontext
428                     Perl_mess_nocontext
429                     Perl_warn_nocontext
430                     Perl_warner_nocontext
431                     Perl_newSVpvf_nocontext
432                     Perl_sv_catpvf_nocontext
433                     Perl_sv_setpvf_nocontext
434                     Perl_sv_catpvf_mg_nocontext
435                     Perl_sv_setpvf_mg_nocontext
436                     Perl_my_cxt_init
437                     Perl_my_cxt_index
438                          );
439 }
440
441 if (${^SAFE_LOCALES}) {    # Don't need mutexes if have thread-safe operations
442                            # except early versions of Windows need this one
443     ++$skip{PL_locale_mutex} unless $ARGS{PLATFORM} eq 'win32'
444                                 && ($ARGS{CCTYPE} =~ s/MSVC//r) < 140;
445     ++$skip{PL_lc_numeric_mutex};
446     ++$skip{PL_lc_numeric_mutex_depth};
447 }
448
449 unless ($define{'PERL_OP_PARENT'}) {
450     ++$skip{$_} foreach qw(
451                     Perl_op_parent
452                 );
453 }
454
455 unless ($define{'USE_DTRACE'}) {
456     ++$skip{$_} foreach qw(
457                     Perl_dtrace_probe_call
458                     Perl_dtrace_probe_load
459                     Perl_dtrace_probe_op
460                     Perl_dtrace_probe_phase
461                 );
462 }
463
464 unless ($define{'PERL_NEED_APPCTX'}) {
465     ++$skip{PL_appctx};
466 }
467
468 unless ($define{'PERL_NEED_TIMESBASE'}) {
469     ++$skip{PL_timesbase};
470 }
471
472 unless ($define{'DEBUG_LEAKING_SCALARS'}) {
473     ++$skip{PL_sv_serial};
474 }
475
476 unless ($define{'DEBUG_LEAKING_SCALARS_FORK_DUMP'}) {
477     ++$skip{PL_dumper_fd};
478 }
479
480 unless ($define{'PERL_DONT_CREATE_GVSV'}) {
481     ++$skip{Perl_gv_SVadd};
482 }
483
484 unless ($define{'PERL_USES_PL_PIDSTATUS'}) {
485     ++$skip{PL_pidstatus};
486 }
487
488 unless ($define{'PERL_TRACK_MEMPOOL'}) {
489     ++$skip{PL_memory_debug_header};
490 }
491
492 unless ($define{'MULTIPLICITY'}) {
493     ++$skip{$_} foreach qw(
494                     PL_interp_size
495                     PL_interp_size_5_18_0
496                     PL_sv_yes
497                     PL_sv_undef
498                     PL_sv_no
499                     PL_sv_zero
500                          );
501 }
502
503 unless ($define{'PERL_GLOBAL_STRUCT'}) {
504     ++$skip{PL_global_struct_size};
505 }
506
507 unless ($define{'PERL_GLOBAL_STRUCT_PRIVATE'}) {
508     ++$skip{$_} foreach qw(
509                     PL_my_cxt_keys
510                     Perl_my_cxt_index
511                          );
512 }
513
514 unless ($define{HAS_MMAP}) {
515     ++$skip{PL_mmap_page_size};
516 }
517
518 if ($define{HAS_SIGACTION}) {
519     ++$skip{PL_sig_trapped};
520
521     if ($ARGS{PLATFORM} eq 'vms') {
522         # FAKE_PERSISTENT_SIGNAL_HANDLERS defined as !defined(HAS_SIGACTION)
523         ++$skip{PL_sig_ignoring};
524         ++$skip{PL_sig_handlers_initted} unless $define{KILL_BY_SIGPRC};
525     }
526 }
527
528 if ($ARGS{PLATFORM} eq 'vms' && !$define{KILL_BY_SIGPRC}) {
529     # FAKE_DEFAULT_SIGNAL_HANDLERS defined as KILL_BY_SIGPRC
530     ++$skip{Perl_csighandler_init};
531     ++$skip{Perl_my_kill};
532     ++$skip{Perl_sig_to_vmscondition};
533     ++$skip{PL_sig_defaulting};
534     ++$skip{PL_sig_handlers_initted} unless !$define{HAS_SIGACTION};
535 }
536
537 if ($define{'HAS_STRNLEN'})
538 {
539     ++$skip{Perl_my_strnlen};
540 }
541
542 unless ($define{USE_LOCALE_COLLATE}) {
543     ++$skip{$_} foreach qw(
544                     PL_collation_ix
545                     PL_collation_name
546                     PL_collation_standard
547                     PL_collxfrm_base
548                     PL_collxfrm_mult
549                     Perl_sv_collxfrm
550                     Perl_sv_collxfrm_flags
551                          );
552 }
553
554 unless ($define{USE_LOCALE_NUMERIC}) {
555     ++$skip{$_} foreach qw(
556                     PL_numeric_local
557                     PL_numeric_name
558                     PL_numeric_radix_sv
559                     PL_numeric_standard
560                          );
561 }
562
563 unless ($define{'USE_C_BACKTRACE'}) {
564     ++$skip{Perl_get_c_backtrace_dump};
565     ++$skip{Perl_dump_c_backtrace};
566 }
567
568 unless ($define{HAVE_INTERP_INTERN}) {
569     ++$skip{$_} foreach qw(
570                     Perl_sys_intern_clear
571                     Perl_sys_intern_dup
572                     Perl_sys_intern_init
573                     PL_sys_intern
574                          );
575 }
576
577 if ($define{HAS_SIGNBIT}) {
578     ++$skip{Perl_signbit};
579 }
580
581 if ($define{'PERL_GLOBAL_STRUCT'}) {
582     readvar('perlvars.h', \%skip);
583     # This seems like the least ugly way to cope with the fact that PL_sh_path
584     # is mentioned in perlvar.h and globvar.sym, and always exported.
585     delete $skip{PL_sh_path};
586     ++$export{Perl_GetVars};
587     try_symbols(qw(PL_Vars PL_VarsPtr))
588       unless $ARGS{CCTYPE} eq 'GCC' || $define{PERL_GLOBAL_STRUCT_PRIVATE};
589 } else {
590     ++$skip{$_} foreach qw(Perl_init_global_struct Perl_free_global_struct);
591 }
592
593 ++$skip{PL_op_exec_cnt}
594     unless $define{PERL_TRACE_OPS};
595
596 ++$skip{PL_hash_chars}
597     unless $define{PERL_USE_SINGLE_CHAR_HASH_CACHE};
598
599 # functions from *.sym files
600
601 my @syms = qw(globvar.sym);
602
603 # Symbols that are the public face of the PerlIO layers implementation
604 # These are in _addition to_ the public face of the abstraction
605 # and need to be exported to allow XS modules to implement layers
606 my @layer_syms = qw(
607                     PerlIOBase_binmode
608                     PerlIOBase_clearerr
609                     PerlIOBase_close
610                     PerlIOBase_dup
611                     PerlIOBase_eof
612                     PerlIOBase_error
613                     PerlIOBase_fileno
614                     PerlIOBase_open
615                     PerlIOBase_noop_fail
616                     PerlIOBase_noop_ok
617                     PerlIOBase_popped
618                     PerlIOBase_pushed
619                     PerlIOBase_read
620                     PerlIOBase_setlinebuf
621                     PerlIOBase_unread
622                     PerlIOBuf_bufsiz
623                     PerlIOBuf_close
624                     PerlIOBuf_dup
625                     PerlIOBuf_fill
626                     PerlIOBuf_flush
627                     PerlIOBuf_get_base
628                     PerlIOBuf_get_cnt
629                     PerlIOBuf_get_ptr
630                     PerlIOBuf_open
631                     PerlIOBuf_popped
632                     PerlIOBuf_pushed
633                     PerlIOBuf_read
634                     PerlIOBuf_seek
635                     PerlIOBuf_set_ptrcnt
636                     PerlIOBuf_tell
637                     PerlIOBuf_unread
638                     PerlIOBuf_write
639                     PerlIO_allocate
640                     PerlIO_apply_layera
641                     PerlIO_apply_layers
642                     PerlIO_arg_fetch
643                     PerlIO_debug
644                     PerlIO_define_layer
645                     PerlIO_find_layer
646                     PerlIO_isutf8
647                     PerlIO_layer_fetch
648                     PerlIO_list_alloc
649                     PerlIO_list_free
650                     PerlIO_modestr
651                     PerlIO_parse_layers
652                     PerlIO_pending
653                     PerlIO_perlio
654                     PerlIO_pop
655                     PerlIO_push
656                     PerlIO_sv_dup
657                     Perl_PerlIO_clearerr
658                     Perl_PerlIO_close
659                     Perl_PerlIO_context_layers
660                     Perl_PerlIO_eof
661                     Perl_PerlIO_error
662                     Perl_PerlIO_fileno
663                     Perl_PerlIO_fill
664                     Perl_PerlIO_flush
665                     Perl_PerlIO_get_base
666                     Perl_PerlIO_get_bufsiz
667                     Perl_PerlIO_get_cnt
668                     Perl_PerlIO_get_ptr
669                     Perl_PerlIO_read
670                     Perl_PerlIO_restore_errno
671                     Perl_PerlIO_save_errno
672                     Perl_PerlIO_seek
673                     Perl_PerlIO_set_cnt
674                     Perl_PerlIO_set_ptrcnt
675                     Perl_PerlIO_setlinebuf
676                     Perl_PerlIO_stderr
677                     Perl_PerlIO_stdin
678                     Perl_PerlIO_stdout
679                     Perl_PerlIO_tell
680                     Perl_PerlIO_unread
681                     Perl_PerlIO_write
682 );
683 if ($ARGS{PLATFORM} eq 'netware') {
684     push(@layer_syms,'PL_def_layerlist','PL_known_layers','PL_perlio');
685 }
686
687 # Export the symbols that make up the PerlIO abstraction, regardless
688 # of its implementation - read from a file
689 push @syms, 'perlio.sym';
690
691 # PerlIO with layers - export implementation
692 try_symbols(@layer_syms, 'perlsio_binmode');
693
694
695 unless ($define{'USE_QUADMATH'}) {
696   ++$skip{Perl_quadmath_format_needed};
697   ++$skip{Perl_quadmath_format_single};
698 }
699
700 ###############################################################################
701
702 # At this point all skip lists should be completed, as we are about to test
703 # many symbols against them.
704
705 {
706     my %seen;
707     my ($embed) = setup_embed($ARGS{TARG_DIR});
708
709     foreach (@$embed) {
710         my ($flags, $retval, $func, @args) = @$_;
711         next unless $func;
712         if (   ($flags =~ /[AX]/ && $flags !~ /[xmi]/)
713             || ($flags =~ /b/ && ! $define{'NO_MATHOMS'}))
714         {
715             # public API, so export
716
717             # If a function is defined twice, for example before and after
718             # an #else, only export its name once. Important to do this test
719             # within the block, as the *first* definition may have flags which
720             # mean "don't export"
721             next if $seen{$func}++;
722             # Should we also skip adding the Perl_ prefix if $flags =~ /o/ ?
723             $func = "Perl_$func" if ($flags =~ /[pX]/ && $func !~ /^Perl_/);
724             ++$export{$func} unless exists $skip{$func};
725         }
726     }
727 }
728
729 foreach (@syms) {
730     my $syms = $ARGS{TARG_DIR} . $_;
731     open my $global, '<', $syms or die "failed to open $syms: $!\n";
732     while (<$global>) {
733         next unless /^([A-Za-z].*)/;
734         my $symbol = "$1";
735         ++$export{$symbol} unless exists $skip{$symbol};
736     }
737 }
738
739 # variables
740
741 if ($define{'MULTIPLICITY'} && $define{PERL_GLOBAL_STRUCT}) {
742     readvar('perlvars.h', \%export, sub { "Perl_" . $_[1] . $_[2] . "_ptr" });
743     # XXX AIX seems to want the perlvars.h symbols, for some reason
744     if ($ARGS{PLATFORM} eq 'aix' or $ARGS{PLATFORM} eq 'os2') { # OS/2 needs PL_thr_key
745         readvar('perlvars.h', \%export);
746     }
747 }
748 else {
749     unless ($define{'PERL_GLOBAL_STRUCT'}) {
750         readvar('perlvars.h', \%export);
751     }
752     unless ($define{MULTIPLICITY}) {
753         readvar('intrpvar.h', \%export);
754     }
755 }
756
757 # Oddities from PerlIO
758 # All have alternate implementations in perlio.c, so always exist.
759 # Should they be considered to be part of the API?
760 try_symbols(qw(
761                     PerlIO_binmode
762                     PerlIO_getpos
763                     PerlIO_init
764                     PerlIO_setpos
765                     PerlIO_tmpfile
766              ));
767
768 if ($ARGS{PLATFORM} eq 'win32') {
769     try_symbols(qw(
770                                  win32_free_childdir
771                                  win32_free_childenv
772                                  win32_get_childdir
773                                  win32_get_childenv
774                                  win32_spawnvp
775                  ));
776 }
777
778 if ($ARGS{PLATFORM} eq 'wince') {
779     ++$skip{'win32_isatty'}; # commit 4342f4d6df is win32-only
780 }
781
782 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
783     try_symbols(qw(
784                             Perl_init_os_extras
785                             Perl_thread_create
786                             Perl_win32_init
787                             Perl_win32_term
788                             RunPerl
789                             win32_async_check
790                             win32_errno
791                             win32_environ
792                             win32_abort
793                             win32_fstat
794                             win32_stat
795                             win32_pipe
796                             win32_popen
797                             win32_pclose
798                             win32_rename
799                             win32_setmode
800                             win32_chsize
801                             win32_lseek
802                             win32_tell
803                             win32_dup
804                             win32_dup2
805                             win32_open
806                             win32_close
807                             win32_eof
808                             win32_isatty
809                             win32_read
810                             win32_write
811                             win32_mkdir
812                             win32_rmdir
813                             win32_chdir
814                             win32_flock
815                             win32_execv
816                             win32_execvp
817                             win32_htons
818                             win32_ntohs
819                             win32_htonl
820                             win32_ntohl
821                             win32_inet_addr
822                             win32_inet_ntoa
823                             win32_socket
824                             win32_bind
825                             win32_listen
826                             win32_accept
827                             win32_connect
828                             win32_send
829                             win32_sendto
830                             win32_recv
831                             win32_recvfrom
832                             win32_shutdown
833                             win32_closesocket
834                             win32_ioctlsocket
835                             win32_setsockopt
836                             win32_getsockopt
837                             win32_getpeername
838                             win32_getsockname
839                             win32_gethostname
840                             win32_gethostbyname
841                             win32_gethostbyaddr
842                             win32_getprotobyname
843                             win32_getprotobynumber
844                             win32_getservbyname
845                             win32_getservbyport
846                             win32_select
847                             win32_endhostent
848                             win32_endnetent
849                             win32_endprotoent
850                             win32_endservent
851                             win32_getnetent
852                             win32_getnetbyname
853                             win32_getnetbyaddr
854                             win32_getprotoent
855                             win32_getservent
856                             win32_sethostent
857                             win32_setnetent
858                             win32_setprotoent
859                             win32_setservent
860                             win32_getenv
861                             win32_putenv
862                             win32_perror
863                             win32_malloc
864                             win32_calloc
865                             win32_realloc
866                             win32_free
867                             win32_sleep
868                             win32_times
869                             win32_access
870                             win32_alarm
871                             win32_chmod
872                             win32_open_osfhandle
873                             win32_get_osfhandle
874                             win32_ioctl
875                             win32_link
876                             win32_unlink
877                             win32_utime
878                             win32_gettimeofday
879                             win32_uname
880                             win32_wait
881                             win32_waitpid
882                             win32_kill
883                             win32_str_os_error
884                             win32_opendir
885                             win32_readdir
886                             win32_telldir
887                             win32_seekdir
888                             win32_rewinddir
889                             win32_closedir
890                             win32_longpath
891                             win32_ansipath
892                             win32_os_id
893                             win32_getpid
894                             win32_crypt
895                             win32_dynaload
896                             win32_clearenv
897                             win32_stdin
898                             win32_stdout
899                             win32_stderr
900                             win32_ferror
901                             win32_feof
902                             win32_strerror
903                             win32_fprintf
904                             win32_printf
905                             win32_vfprintf
906                             win32_vprintf
907                             win32_fread
908                             win32_fwrite
909                             win32_fopen
910                             win32_fdopen
911                             win32_freopen
912                             win32_fclose
913                             win32_fputs
914                             win32_fputc
915                             win32_ungetc
916                             win32_getc
917                             win32_fileno
918                             win32_clearerr
919                             win32_fflush
920                             win32_ftell
921                             win32_fseek
922                             win32_fgetpos
923                             win32_fsetpos
924                             win32_rewind
925                             win32_tmpfile
926                             win32_setbuf
927                             win32_setvbuf
928                             win32_flushall
929                             win32_fcloseall
930                             win32_fgets
931                             win32_gets
932                             win32_fgetc
933                             win32_putc
934                             win32_puts
935                             win32_getchar
936                             win32_putchar
937                  ));
938 }
939 elsif ($ARGS{PLATFORM} eq 'vms') {
940     try_symbols(qw(
941                       Perl_cando
942                       Perl_cando_by_name
943                       Perl_closedir
944                       Perl_csighandler_init
945                       Perl_do_rmdir
946                       Perl_fileify_dirspec
947                       Perl_fileify_dirspec_ts
948                       Perl_fileify_dirspec_utf8
949                       Perl_fileify_dirspec_utf8_ts
950                       Perl_flex_fstat
951                       Perl_flex_lstat
952                       Perl_flex_stat
953                       Perl_kill_file
954                       Perl_my_chdir
955                       Perl_my_chmod
956                       Perl_my_crypt
957                       Perl_my_endpwent
958                       Perl_my_fclose
959                       Perl_my_fdopen
960                       Perl_my_fgetname
961                       Perl_my_flush
962                       Perl_my_fwrite
963                       Perl_my_gconvert
964                       Perl_my_getenv
965                       Perl_my_getenv_len
966                       Perl_my_getpwnam
967                       Perl_my_getpwuid
968                       Perl_my_gmtime
969                       Perl_my_kill
970                       Perl_my_killpg
971                       Perl_my_localtime
972                       Perl_my_mkdir
973                       Perl_my_sigaction
974                       Perl_my_symlink
975                       Perl_my_time
976                       Perl_my_tmpfile
977                       Perl_my_trnlnm
978                       Perl_my_utime
979                       Perl_my_waitpid
980                       Perl_opendir
981                       Perl_pathify_dirspec
982                       Perl_pathify_dirspec_ts
983                       Perl_pathify_dirspec_utf8
984                       Perl_pathify_dirspec_utf8_ts
985                       Perl_readdir
986                       Perl_readdir_r
987                       Perl_rename
988                       Perl_rmscopy
989                       Perl_rmsexpand
990                       Perl_rmsexpand_ts
991                       Perl_rmsexpand_utf8
992                       Perl_rmsexpand_utf8_ts
993                       Perl_seekdir
994                       Perl_sig_to_vmscondition
995                       Perl_telldir
996                       Perl_tounixpath
997                       Perl_tounixpath_ts
998                       Perl_tounixpath_utf8
999                       Perl_tounixpath_utf8_ts
1000                       Perl_tounixspec
1001                       Perl_tounixspec_ts
1002                       Perl_tounixspec_utf8
1003                       Perl_tounixspec_utf8_ts
1004                       Perl_tovmspath
1005                       Perl_tovmspath_ts
1006                       Perl_tovmspath_utf8
1007                       Perl_tovmspath_utf8_ts
1008                       Perl_tovmsspec
1009                       Perl_tovmsspec_ts
1010                       Perl_tovmsspec_utf8
1011                       Perl_tovmsspec_utf8_ts
1012                       Perl_trim_unixpath
1013                       Perl_vms_case_tolerant
1014                       Perl_vms_do_aexec
1015                       Perl_vms_do_exec
1016                       Perl_vms_image_init
1017                       Perl_vms_realpath
1018                       Perl_vmssetenv
1019                       Perl_vmssetuserlnm
1020                       Perl_vmstrnenv
1021                       PerlIO_openn
1022                  ));
1023 }
1024 elsif ($ARGS{PLATFORM} eq 'os2') {
1025     try_symbols(qw(
1026                       ctermid
1027                       get_sysinfo
1028                       Perl_OS2_init
1029                       Perl_OS2_init3
1030                       Perl_OS2_term
1031                       OS2_Perl_data
1032                       dlopen
1033                       dlsym
1034                       dlerror
1035                       dlclose
1036                       dup2
1037                       dup
1038                       my_tmpfile
1039                       my_tmpnam
1040                       my_flock
1041                       my_rmdir
1042                       my_mkdir
1043                       my_getpwuid
1044                       my_getpwnam
1045                       my_getpwent
1046                       my_setpwent
1047                       my_endpwent
1048                       fork_with_resources
1049                       croak_with_os2error
1050                       setgrent
1051                       endgrent
1052                       getgrent
1053                       malloc_mutex
1054                       threads_mutex
1055                       nthreads
1056                       nthreads_cond
1057                       os2_cond_wait
1058                       os2_stat
1059                       os2_execname
1060                       async_mssleep
1061                       msCounter
1062                       InfoTable
1063                       pthread_join
1064                       pthread_create
1065                       pthread_detach
1066                       XS_Cwd_change_drive
1067                       XS_Cwd_current_drive
1068                       XS_Cwd_extLibpath
1069                       XS_Cwd_extLibpath_set
1070                       XS_Cwd_sys_abspath
1071                       XS_Cwd_sys_chdir
1072                       XS_Cwd_sys_cwd
1073                       XS_Cwd_sys_is_absolute
1074                       XS_Cwd_sys_is_relative
1075                       XS_Cwd_sys_is_rooted
1076                       XS_DynaLoader_mod2fname
1077                       XS_File__Copy_syscopy
1078                       Perl_Register_MQ
1079                       Perl_Deregister_MQ
1080                       Perl_Serve_Messages
1081                       Perl_Process_Messages
1082                       init_PMWIN_entries
1083                       PMWIN_entries
1084                       Perl_hab_GET
1085                       loadByOrdinal
1086                       pExtFCN
1087                       os2error
1088                       ResetWinError
1089                       CroakWinError
1090                       PL_do_undump
1091                  ));
1092 }
1093 elsif ($ARGS{PLATFORM} eq 'netware') {
1094     try_symbols(qw(
1095                         Perl_init_os_extras
1096                         Perl_thread_create
1097                         Perl_nw5_init
1098                         RunPerl
1099                         AllocStdPerl
1100                         FreeStdPerl
1101                         do_spawn2
1102                         do_aspawn
1103                         nw_uname
1104                         nw_stdin
1105                         nw_stdout
1106                         nw_stderr
1107                         nw_feof
1108                         nw_ferror
1109                         nw_fopen
1110                         nw_fclose
1111                         nw_clearerr
1112                         nw_getc
1113                         nw_fgets
1114                         nw_fputc
1115                         nw_fputs
1116                         nw_fflush
1117                         nw_ungetc
1118                         nw_fileno
1119                         nw_fdopen
1120                         nw_freopen
1121                         nw_fread
1122                         nw_fwrite
1123                         nw_setbuf
1124                         nw_setvbuf
1125                         nw_vfprintf
1126                         nw_ftell
1127                         nw_fseek
1128                         nw_rewind
1129                         nw_tmpfile
1130                         nw_fgetpos
1131                         nw_fsetpos
1132                         nw_dup
1133                         nw_access
1134                         nw_chmod
1135                         nw_chsize
1136                         nw_close
1137                         nw_dup2
1138                         nw_flock
1139                         nw_isatty
1140                         nw_link
1141                         nw_lseek
1142                         nw_stat
1143                         nw_mktemp
1144                         nw_open
1145                         nw_read
1146                         nw_rename
1147                         nw_setmode
1148                         nw_unlink
1149                         nw_utime
1150                         nw_write
1151                         nw_chdir
1152                         nw_rmdir
1153                         nw_closedir
1154                         nw_opendir
1155                         nw_readdir
1156                         nw_rewinddir
1157                         nw_seekdir
1158                         nw_telldir
1159                         nw_htonl
1160                         nw_htons
1161                         nw_ntohl
1162                         nw_ntohs
1163                         nw_accept
1164                         nw_bind
1165                         nw_connect
1166                         nw_endhostent
1167                         nw_endnetent
1168                         nw_endprotoent
1169                         nw_endservent
1170                         nw_gethostbyaddr
1171                         nw_gethostbyname
1172                         nw_gethostent
1173                         nw_gethostname
1174                         nw_getnetbyaddr
1175                         nw_getnetbyname
1176                         nw_getnetent
1177                         nw_getpeername
1178                         nw_getprotobyname
1179                         nw_getprotobynumber
1180                         nw_getprotoent
1181                         nw_getservbyname
1182                         nw_getservbyport
1183                         nw_getservent
1184                         nw_getsockname
1185                         nw_getsockopt
1186                         nw_inet_addr
1187                         nw_listen
1188                         nw_socket
1189                         nw_recv
1190                         nw_recvfrom
1191                         nw_select
1192                         nw_send
1193                         nw_sendto
1194                         nw_sethostent
1195                         nw_setnetent
1196                         nw_setprotoent
1197                         nw_setservent
1198                         nw_setsockopt
1199                         nw_inet_ntoa
1200                         nw_shutdown
1201                         nw_crypt
1202                         nw_execvp
1203                         nw_kill
1204                         nw_Popen
1205                         nw_Pclose
1206                         nw_Pipe
1207                         nw_times
1208                         nw_waitpid
1209                         nw_getpid
1210                         nw_spawnvp
1211                         nw_os_id
1212                         nw_open_osfhandle
1213                         nw_get_osfhandle
1214                         nw_abort
1215                         nw_sleep
1216                         nw_wait
1217                         nw_dynaload
1218                         nw_strerror
1219                         fnFpSetMode
1220                         fnInsertHashListAddrs
1221                         fnGetHashListAddrs
1222                         Perl_deb
1223                         Perl_sv_setsv
1224                         Perl_sv_catsv
1225                         Perl_sv_catpvn
1226                         Perl_sv_2pv
1227                         nw_freeenviron
1228                         Remove_Thread_Ctx
1229                  ));
1230 }
1231
1232 # When added this code was only run for Win32 and WinCE
1233 # Currently only Win32 links static extensions into the shared library.
1234 # The WinCE makefile doesn't appear to support static extensions, so this code
1235 # can't have any effect there.
1236 # The NetWare Makefile doesn't support static extensions (and hardcodes the
1237 # list of dynamic extensions, and the rules to build them)
1238 # For *nix (and presumably OS/2) with a shared libperl, Makefile.SH compiles
1239 # static extensions with -fPIC, but links them to perl, not libperl.so
1240 # The VMS build scripts don't yet implement static extensions at all.
1241
1242 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
1243     # records of type boot_module for statically linked modules (except Dynaloader)
1244     my $static_ext = $Config{static_ext} // "";
1245     $static_ext =~ s/\//__/g;
1246     $static_ext =~ s/\bDynaLoader\b//;
1247     try_symbols(map {"boot_$_"} grep {/\S/} split /\s+/, $static_ext);
1248     try_symbols("init_Win32CORE") if $static_ext =~ /\bWin32CORE\b/;
1249 }
1250
1251 if ($ARGS{PLATFORM} eq 'os2') {
1252     my (%mapped, @missing);
1253     open MAP, '<', 'miniperl.map' or die 'Cannot read miniperl.map';
1254     /^\s*[\da-f:]+\s+(\w+)/i and $mapped{$1}++ foreach <MAP>;
1255     close MAP or die 'Cannot close miniperl.map';
1256
1257     @missing = grep { !exists $mapped{$_} }
1258                     keys %export;
1259     @missing = grep { !exists $exportperlmalloc{$_} } @missing;
1260     delete $export{$_} foreach @missing;
1261 }
1262
1263 ###############################################################################
1264
1265 # Now all symbols should be defined because next we are going to output them.
1266
1267 # Start with platform specific headers:
1268
1269 if ($ARGS{PLATFORM} =~ /^win(?:32|ce)$/) {
1270     my $dll = $define{PERL_DLL} ? $define{PERL_DLL} =~ s/\.dll$//ir
1271         : "perl$Config{api_revision}$Config{api_version}";
1272     print "LIBRARY $dll\n";
1273     # The DESCRIPTION module definition file statement is not supported
1274     # by VC7 onwards.
1275     if ($ARGS{CCTYPE} =~ /^(?:MSVC60|GCC)$/) {
1276         print "DESCRIPTION 'Perl interpreter'\n";
1277     }
1278     print "EXPORTS\n";
1279 }
1280 elsif ($ARGS{PLATFORM} eq 'os2') {
1281     (my $v = $]) =~ s/(\d\.\d\d\d)(\d\d)$/$1_$2/;
1282     $v .= '-thread' if $Config{archname} =~ /-thread/;
1283     (my $dll = $define{PERL_DLL}) =~ s/\.dll$//i;
1284     $v .= "\@$Config{perl_patchlevel}" if $Config{perl_patchlevel};
1285     my $d = "DESCRIPTION '\@#perl5-porters\@perl.org:$v#\@ Perl interpreter, configured as $Config{config_args}'";
1286     $d = substr($d, 0, 249) . "...'" if length $d > 253;
1287     print <<"---EOP---";
1288 LIBRARY '$dll' INITINSTANCE TERMINSTANCE
1289 $d
1290 STACKSIZE 32768
1291 CODE LOADONCALL
1292 DATA LOADONCALL NONSHARED MULTIPLE
1293 EXPORTS
1294 ---EOP---
1295 }
1296 elsif ($ARGS{PLATFORM} eq 'aix') {
1297     my $OSVER = `uname -v`;
1298     chop $OSVER;
1299     my $OSREL = `uname -r`;
1300     chop $OSREL;
1301     if ($OSVER > 4 || ($OSVER == 4 && $OSREL >= 3)) {
1302         print "#! ..\n";
1303     } else {
1304         print "#!\n";
1305     }
1306 }
1307 elsif ($ARGS{PLATFORM} eq 'netware') {
1308         if ($ARGS{FILETYPE} eq 'def') {
1309         print "LIBRARY perl$Config{api_revision}$Config{api_version}\n";
1310         print "DESCRIPTION 'Perl interpreter for NetWare'\n";
1311         print "EXPORTS\n";
1312         }
1313 }
1314
1315 # Then the symbols
1316
1317 my @symbols = $fold ? sort {lc $a cmp lc $b} keys %export : sort keys %export;
1318 foreach my $symbol (@symbols) {
1319     if (PLATFORM eq 'win32' || PLATFORM eq 'wince') {
1320         # Remembering the origin file of each symbol is an alternative to PL_ matching
1321         if (substr($symbol, 0, 3) eq 'PL_') {
1322             print "\t$symbol DATA\n";
1323         }
1324         else {
1325             print "\t$symbol\n";
1326         }
1327     }
1328     elsif (PLATFORM eq 'os2') {
1329         printf qq(    %-31s \@%s\n),
1330           qq("$symbol"), $ordinal{$symbol} || ++$sym_ord;
1331         printf qq(    %-31s \@%s\n),
1332           qq("$exportperlmalloc{$symbol}" = "$symbol"),
1333           $ordinal{$exportperlmalloc{$symbol}} || ++$sym_ord
1334           if $exportperlmalloc and exists $exportperlmalloc{$symbol};
1335     }
1336     elsif (PLATFORM eq 'netware') {
1337         print "\t$symbol,\n";
1338     } else {
1339         print "$symbol\n";
1340     }
1341 }
1342
1343 # Then platform specific footers.
1344
1345 if ($ARGS{PLATFORM} eq 'os2') {
1346     print <<EOP;
1347     dll_perlmain=main
1348     fill_extLibpath
1349     dir_subst
1350     Perl_OS2_handler_install
1351
1352 ; LAST_ORDINAL=$sym_ord
1353 EOP
1354 }
1355
1356 1;