makedef.pl

   1 #
   2 # Create the export list for perl.
   3 #
   4 # Needed by WIN32 and OS/2 for creating perl.dll,
   5 # and by AIX for creating libperl.a when -Dusershrplib is in effect,
   6 # and by MacOS Classic.
   7 #
   8 # reads global.sym, pp.sym, perlvars.h, intrpvar.h, thrdvar.h, config.h
   9 # On OS/2 reads miniperl.map and the previous version of perl5.def as well
  10
  11 my $PLATFORM;
  12 my $CCTYPE;
  13
  14 while (@ARGV) {
  15     my $flag = shift;
  16     if ($flag =~ s/^CC_FLAGS=/ /) {
  17         for my $fflag ($flag =~ /(?:^|\s)-D(\S+)/g) {
  18             $fflag     .= '=1' unless $fflag =~ /^(\w+)=/;
  19             $define{$1} = $2   if $fflag =~ /^(\w+)=(.+)$/;
  20         }
  21         next;
  22     }
  23     $define{$1} = 1 if ($flag =~ /^-D(\w+)$/);
  24     $define{$1} = $2 if ($flag =~ /^-D(\w+)=(.+)$/);
  25     $CCTYPE   = $1 if ($flag =~ /^CCTYPE=(\w+)$/);
  26     $PLATFORM = $1 if ($flag =~ /^PLATFORM=(\w+)$/);
  27     if ($PLATFORM eq 'netware') {
  28         $FILETYPE = $1 if ($flag =~ /^FILETYPE=(\w+)$/);
  29     }
  30 }
  31
  32 my @PLATFORM = qw(aix win32 wince os2 MacOS netware);
  33 my %PLATFORM;
  34 @PLATFORM{@PLATFORM} = ();
  35
  36 defined $PLATFORM || die "PLATFORM undefined, must be one of: @PLATFORM\n";
  37 exists $PLATFORM{$PLATFORM} || die "PLATFORM must be one of: @PLATFORM\n";
  38
  39 my %exportperlmalloc =
  40     (
  41        Perl_malloc              =>      "malloc",
  42        Perl_mfree               =>      "free",
  43        Perl_realloc             =>      "realloc",
  44        Perl_calloc              =>      "calloc",
  45     );
  46
  47 my $exportperlmalloc = $PLATFORM eq 'os2';
  48
  49 my $config_sh   = "config.sh";
  50 my $config_h    = "config.h";
  51 my $thrdvar_h   = "thrdvar.h";
  52 my $intrpvar_h  = "intrpvar.h";
  53 my $perlvars_h  = "perlvars.h";
  54 my $global_sym  = "global.sym";
  55 my $pp_sym      = "pp.sym";
  56 my $globvar_sym = "globvar.sym";
  57 my $perlio_sym  = "perlio.sym";
  58 my $static_ext = "";
  59
  60 if ($PLATFORM eq 'aix') {
  61     # Nothing for now.
  62 }
  63 elsif ($PLATFORM =~ /^win(?:32|ce)$/ || $PLATFORM eq 'netware') {
  64     $CCTYPE = "MSVC" unless defined $CCTYPE;
  65     foreach ($thrdvar_h, $intrpvar_h, $perlvars_h, $global_sym,
  66              $pp_sym, $globvar_sym, $perlio_sym) {
  67         s!^!..\\!;
  68     }
  69 }
  70 elsif ($PLATFORM eq 'MacOS') {
  71     foreach ($thrdvar_h, $intrpvar_h, $perlvars_h, $global_sym,
  72              $pp_sym, $globvar_sym, $perlio_sym) {
  73         s!^!::!;
  74     }
  75 }
  76
  77 unless ($PLATFORM eq 'win32' || $PLATFORM eq 'wince' || $PLATFORM eq 'MacOS' || $PLATFORM eq 'netware') {
  78     open(CFG,$config_sh) || die "Cannot open $config_sh: $!\n";
  79     while (<CFG>) {
  80         if (/^(?:ccflags|optimize)='(.+)'$/) {
  81             $_ = $1;
  82             $define{$1} = 1 while /-D(\w+)/g;
  83         }
  84         if (/^(d_(?:mmap|sigaction))='(.+)'$/) {
  85             $define{$1} = $2;
  86         }
  87         if ($PLATFORM eq 'os2') {
  88             $CONFIG_ARGS = $1 if /^config_args='(.+)'$/;
  89             $ARCHNAME =    $1 if /^archname='(.+)'$/;
  90             $PATCHLEVEL =  $1 if /^perl_patchlevel='(.+)'$/;
  91         }
  92     }
  93     close(CFG);
  94 }
  95 if ($PLATFORM eq 'win32' || $PLATFORM eq 'wince') {
  96     open(CFG,"<..\\$config_sh") || die "Cannot open ..\\$config_sh: $!\n";
  97     if ((join '', <CFG>) =~ /^static_ext='(.*)'$/m) {
  98         $static_ext = $1;
  99     }
 100     close(CFG);
 101 }
 102
 103 open(CFG,$config_h) || die "Cannot open $config_h: $!\n";
 104 while (<CFG>) {
 105     $define{$1} = 1 if /^\s*#\s*define\s+(MYMALLOC)\b/;
 106     $define{$1} = 1 if /^\s*#\s*define\s+(MULTIPLICITY)\b/;
 107     $define{$1} = 1 if /^\s*#\s*define\s+(PERL_\w+)\b/;
 108     $define{$1} = 1 if /^\s*#\s*define\s+(USE_\w+)\b/;
 109 }
 110 close(CFG);
 111
 112 # perl.h logic duplication begins
 113
 114 if ($define{PERL_IMPLICIT_SYS}) {
 115     $define{PL_OP_SLAB_ALLOC} = 1;
 116 }
 117
 118 if ($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} && $PLATFORM ne 'win32' && $^O ne 'darwin') {
 129     $define{USE_REENTRANT_API} = 1;
 130 }
 131
 132 # perl.h logic duplication ends
 133
 134 my $sym_ord = 0;
 135
 136 if ($PLATFORM =~ /^win(?:32|ce)$/) {
 137     warn join(' ',keys %define)."\n";
 138     ($dll = ($define{PERL_DLL} || "perl59")) =~ s/\.dll$//i;
 139     print "LIBRARY $dll\n";
 140     print "DESCRIPTION 'Perl interpreter'\n";
 141     print "EXPORTS\n";
 142     if ($define{PERL_IMPLICIT_SYS}) {
 143         output_symbol("perl_get_host_info");
 144         output_symbol("perl_alloc_override");
 145     }
 146     if ($define{USE_ITHREADS} and $define{PERL_IMPLICIT_SYS}) {
 147         output_symbol("perl_clone_host");
 148     }
 149 }
 150 elsif ($PLATFORM eq 'os2') {
 151     if (open my $fh, '<', 'perl5.def') {
 152       while (<$fh>) {
 153         last if /^\s*EXPORTS\b/;
 154       }
 155       while (<$fh>) {
 156         $ordinal{$1} = $2 if /^\s*"(\w+)"\s*(?:=\s*"\w+"\s*)?\@(\d+)\s*$/;
 157         # This allows skipping ordinals which were used in older versions
 158         $sym_ord = $1 if /^\s*;\s*LAST_ORDINAL\s*=\s*(\d+)\s*$/;
 159       }
 160       $sym_ord < $_ and $sym_ord = $_ for values %ordinal; # Take the max
 161     }
 162     ($v = $]) =~ s/(\d\.\d\d\d)(\d\d)$/$1_$2/;
 163     $v .= '-thread' if $ARCHNAME =~ /-thread/;
 164     ($dll = $define{PERL_DLL}) =~ s/\.dll$//i;
 165     $v .= "\@$PATCHLEVEL" if $PATCHLEVEL;
 166     $d = "DESCRIPTION '\@#perl5-porters\@perl.org:$v#\@ Perl interpreter, configured as $CONFIG_ARGS'";
 167     $d = substr($d, 0, 249) . "...'" if length $d > 253;
 168     print <<"---EOP---";
 169 LIBRARY '$dll' INITINSTANCE TERMINSTANCE
 170 $d
 171 STACKSIZE 32768
 172 CODE LOADONCALL
 173 DATA LOADONCALL NONSHARED MULTIPLE
 174 EXPORTS
 175 ---EOP---
 176 }
 177 elsif ($PLATFORM eq 'aix') {
 178     $OSVER = `uname -v`;
 179     chop $OSVER;
 180     $OSREL = `uname -r`;
 181     chop $OSREL;
 182     if ($OSVER > 4 || ($OSVER == 4 && $OSREL >= 3)) {
 183         print "#! ..\n";
 184     } else {
 185         print "#!\n";
 186     }
 187 }
 188 elsif ($PLATFORM eq 'netware') {
 189         if ($FILETYPE eq 'def') {
 190         print "LIBRARY perl59\n";
 191         print "DESCRIPTION 'Perl interpreter for NetWare'\n";
 192         print "EXPORTS\n";
 193         }
 194         if ($define{PERL_IMPLICIT_SYS}) {
 195             output_symbol("perl_get_host_info");
 196             output_symbol("perl_alloc_override");
 197             output_symbol("perl_clone_host");
 198         }
 199 }
 200
 201 my %skip;
 202 my %export;
 203
 204 sub skip_symbols {
 205     my $list = shift;
 206     foreach my $symbol (@$list) {
 207         $skip{$symbol} = 1;
 208     }
 209 }
 210
 211 sub emit_symbols {
 212     my $list = shift;
 213     foreach my $symbol (@$list) {
 214         my $skipsym = $symbol;
 215         # XXX hack
 216         if ($define{MULTIPLICITY}) {
 217             $skipsym =~ s/^Perl_[GIT](\w+)_ptr$/PL_$1/;
 218         }
 219         emit_symbol($symbol) unless exists $skip{$skipsym};
 220     }
 221 }
 222
 223 if ($PLATFORM eq 'win32') {
 224     skip_symbols [qw(
 225                      PL_statusvalue_vms
 226                      PL_archpat_auto
 227                      PL_cryptseen
 228                      PL_DBcv
 229                      PL_generation
 230                      PL_lastgotoprobe
 231                      PL_linestart
 232                      PL_modcount
 233                      PL_pending_ident
 234                      PL_sortcxix
 235                      PL_sublex_info
 236                      PL_timesbuf
 237                      main
 238                      Perl_ErrorNo
 239                      Perl_GetVars
 240                      Perl_do_exec3
 241                      Perl_do_ipcctl
 242                      Perl_do_ipcget
 243                      Perl_do_msgrcv
 244                      Perl_do_msgsnd
 245                      Perl_do_semop
 246                      Perl_do_shmio
 247                      Perl_dump_fds
 248                      Perl_init_thread_intern
 249                      Perl_my_bzero
 250                      Perl_my_bcopy
 251                      Perl_my_htonl
 252                      Perl_my_ntohl
 253                      Perl_my_swap
 254                      Perl_my_chsize
 255                      Perl_same_dirent
 256                      Perl_setenv_getix
 257                      Perl_unlnk
 258                      Perl_watch
 259                      Perl_safexcalloc
 260                      Perl_safexmalloc
 261                      Perl_safexfree
 262                      Perl_safexrealloc
 263                      Perl_my_memcmp
 264                      Perl_my_memset
 265                      PL_cshlen
 266                      PL_cshname
 267                      PL_opsave
 268                      Perl_do_exec
 269                      Perl_getenv_len
 270                      Perl_my_pclose
 271                      Perl_my_popen
 272                      )];
 273 }
 274 else {
 275     skip_symbols [qw(
 276                      Perl_do_spawn
 277                      Perl_do_spawn_nowait
 278                      Perl_do_aspawn
 279                      )];
 280 }
 281 if ($PLATFORM eq 'wince') {
 282     skip_symbols [qw(
 283                      PL_statusvalue_vms
 284                      PL_archpat_auto
 285                      PL_cryptseen
 286                      PL_DBcv
 287                      PL_generation
 288                      PL_lastgotoprobe
 289                      PL_linestart
 290                      PL_modcount
 291                      PL_pending_ident
 292                      PL_sortcxix
 293                      PL_sublex_info
 294                      PL_timesbuf
 295                      PL_collation_ix
 296                      PL_collation_name
 297                      PL_collation_standard
 298                      PL_collxfrm_base
 299                      PL_collxfrm_mult
 300                      PL_numeric_compat1
 301                      PL_numeric_local
 302                      PL_numeric_name
 303                      PL_numeric_radix_sv
 304                      PL_numeric_standard
 305                      PL_vtbl_collxfrm
 306                      Perl_sv_collxfrm
 307                      setgid
 308                      setuid
 309                      win32_free_childdir
 310                      win32_free_childenv
 311                      win32_get_childdir
 312                      win32_get_childenv
 313                      win32_spawnvp
 314                      main
 315                      Perl_ErrorNo
 316                      Perl_GetVars
 317                      Perl_do_exec3
 318                      Perl_do_ipcctl
 319                      Perl_do_ipcget
 320                      Perl_do_msgrcv
 321                      Perl_do_msgsnd
 322                      Perl_do_semop
 323                      Perl_do_shmio
 324                      Perl_dump_fds
 325                      Perl_init_thread_intern
 326                      Perl_my_bzero
 327                      Perl_my_bcopy
 328                      Perl_my_htonl
 329                      Perl_my_ntohl
 330                      Perl_my_swap
 331                      Perl_my_chsize
 332                      Perl_same_dirent
 333                      Perl_setenv_getix
 334                      Perl_unlnk
 335                      Perl_watch
 336                      Perl_safexcalloc
 337                      Perl_safexmalloc
 338                      Perl_safexfree
 339                      Perl_safexrealloc
 340                      Perl_my_memcmp
 341                      Perl_my_memset
 342                      PL_cshlen
 343                      PL_cshname
 344                      PL_opsave
 345                      Perl_do_exec
 346                      Perl_getenv_len
 347                      Perl_my_pclose
 348                      Perl_my_popen
 349                      )];
 350 }
 351 elsif ($PLATFORM eq 'aix') {
 352     skip_symbols([qw(
 353                      Perl_dump_fds
 354                      Perl_ErrorNo
 355                      Perl_GetVars
 356                      Perl_my_bcopy
 357                      Perl_my_bzero
 358                      Perl_my_chsize
 359                      Perl_my_htonl
 360                      Perl_my_memcmp
 361                      Perl_my_memset
 362                      Perl_my_ntohl
 363                      Perl_my_swap
 364                      Perl_safexcalloc
 365                      Perl_safexfree
 366                      Perl_safexmalloc
 367                      Perl_safexrealloc
 368                      Perl_same_dirent
 369                      Perl_unlnk
 370                      Perl_sys_intern_clear
 371                      Perl_sys_intern_dup
 372                      Perl_sys_intern_init
 373                      PL_cryptseen
 374                      PL_opsave
 375                      PL_statusvalue_vms
 376                      PL_sys_intern
 377                      )]);
 378 }
 379 elsif ($PLATFORM eq 'os2') {
 380     emit_symbols([qw(
 381                     ctermid
 382                     get_sysinfo
 383                     Perl_OS2_init
 384                     Perl_OS2_init3
 385                     Perl_OS2_term
 386                     OS2_Perl_data
 387                     dlopen
 388                     dlsym
 389                     dlerror
 390                     dlclose
 391                     dup2
 392                     dup
 393                     my_tmpfile
 394                     my_tmpnam
 395                     my_flock
 396                     my_rmdir
 397                     my_mkdir
 398                     my_getpwuid
 399                     my_getpwnam
 400                     my_getpwent
 401                     my_setpwent
 402                     my_endpwent
 403                     fork_with_resources
 404                     croak_with_os2error
 405                     setgrent
 406                     endgrent
 407                     getgrent
 408                     malloc_mutex
 409                     threads_mutex
 410                     nthreads
 411                     nthreads_cond
 412                     os2_cond_wait
 413                     os2_stat
 414                     os2_execname
 415                     async_mssleep
 416                     msCounter
 417                     InfoTable
 418                     pthread_join
 419                     pthread_create
 420                     pthread_detach
 421                     XS_Cwd_change_drive
 422                     XS_Cwd_current_drive
 423                     XS_Cwd_extLibpath
 424                     XS_Cwd_extLibpath_set
 425                     XS_Cwd_sys_abspath
 426                     XS_Cwd_sys_chdir
 427                     XS_Cwd_sys_cwd
 428                     XS_Cwd_sys_is_absolute
 429                     XS_Cwd_sys_is_relative
 430                     XS_Cwd_sys_is_rooted
 431                     XS_DynaLoader_mod2fname
 432                     XS_File__Copy_syscopy
 433                     Perl_Register_MQ
 434                     Perl_Deregister_MQ
 435                     Perl_Serve_Messages
 436                     Perl_Process_Messages
 437                     init_PMWIN_entries
 438                     PMWIN_entries
 439                     Perl_hab_GET
 440                     loadByOrdinal
 441                     pExtFCN
 442                     os2error
 443                     ResetWinError
 444                     CroakWinError
 445                     PL_do_undump
 446                     )]);
 447     emit_symbols([qw(os2_cond_wait
 448                      pthread_join
 449                      pthread_create
 450                      pthread_detach
 451                     )])
 452       if $define{'USE_5005THREADS'} or $define{'USE_ITHREADS'};
 453 }
 454 elsif ($PLATFORM eq 'MacOS') {
 455     skip_symbols [qw(
 456                     Perl_GetVars
 457                     PL_cryptseen
 458                     PL_cshlen
 459                     PL_cshname
 460                     PL_statusvalue_vms
 461                     PL_sys_intern
 462                     PL_opsave
 463                     PL_timesbuf
 464                     Perl_dump_fds
 465                     Perl_my_bcopy
 466                     Perl_my_bzero
 467                     Perl_my_chsize
 468                     Perl_my_htonl
 469                     Perl_my_memcmp
 470                     Perl_my_memset
 471                     Perl_my_ntohl
 472                     Perl_my_swap
 473                     Perl_safexcalloc
 474                     Perl_safexfree
 475                     Perl_safexmalloc
 476                     Perl_safexrealloc
 477                     Perl_unlnk
 478                     Perl_sys_intern_clear
 479                     Perl_sys_intern_init
 480                     )];
 481 }
 482 elsif ($PLATFORM eq 'netware') {
 483         skip_symbols [qw(
 484                         PL_statusvalue_vms
 485                         PL_archpat_auto
 486                         PL_cryptseen
 487                         PL_DBcv
 488                         PL_generation
 489                         PL_lastgotoprobe
 490                         PL_linestart
 491                         PL_modcount
 492                         PL_pending_ident
 493                         PL_sortcxix
 494                         PL_sublex_info
 495                         PL_timesbuf
 496                         main
 497                         Perl_ErrorNo
 498                         Perl_GetVars
 499                         Perl_do_exec3
 500                         Perl_do_ipcctl
 501                         Perl_do_ipcget
 502                         Perl_do_msgrcv
 503                         Perl_do_msgsnd
 504                         Perl_do_semop
 505                         Perl_do_shmio
 506                         Perl_dump_fds
 507                         Perl_init_thread_intern
 508                         Perl_my_bzero
 509                         Perl_my_htonl
 510                         Perl_my_ntohl
 511                         Perl_my_swap
 512                         Perl_my_chsize
 513                         Perl_same_dirent
 514                         Perl_setenv_getix
 515                         Perl_unlnk
 516                         Perl_watch
 517                         Perl_safexcalloc
 518                         Perl_safexmalloc
 519                         Perl_safexfree
 520                         Perl_safexrealloc
 521                         Perl_my_memcmp
 522                         Perl_my_memset
 523                         PL_cshlen
 524                         PL_cshname
 525                         PL_opsave
 526                         Perl_do_exec
 527                         Perl_getenv_len
 528                         Perl_my_pclose
 529                         Perl_my_popen
 530                         Perl_sys_intern_init
 531                         Perl_sys_intern_dup
 532                         Perl_sys_intern_clear
 533                         Perl_my_bcopy
 534                         Perl_PerlIO_write
 535                         Perl_PerlIO_unread
 536                         Perl_PerlIO_tell
 537                         Perl_PerlIO_stdout
 538                         Perl_PerlIO_stdin
 539                         Perl_PerlIO_stderr
 540                         Perl_PerlIO_setlinebuf
 541                         Perl_PerlIO_set_ptrcnt
 542                         Perl_PerlIO_set_cnt
 543                         Perl_PerlIO_seek
 544                         Perl_PerlIO_read
 545                         Perl_PerlIO_get_ptr
 546                         Perl_PerlIO_get_cnt
 547                         Perl_PerlIO_get_bufsiz
 548                         Perl_PerlIO_get_base
 549                         Perl_PerlIO_flush
 550                         Perl_PerlIO_fill
 551                         Perl_PerlIO_fileno
 552                         Perl_PerlIO_error
 553                         Perl_PerlIO_eof
 554                         Perl_PerlIO_close
 555                         Perl_PerlIO_clearerr
 556                         PerlIO_perlio
 557                         )];
 558 }
 559
 560 unless ($define{'DEBUGGING'}) {
 561     skip_symbols [qw(
 562                     Perl_deb_growlevel
 563                     Perl_debop
 564                     Perl_debprofdump
 565                     Perl_debstack
 566                     Perl_debstackptrs
 567                     Perl_sv_peek
 568                     PL_block_type
 569                     PL_watchaddr
 570                     PL_watchok
 571                     PL_watch_pvx
 572                     )];
 573 }
 574
 575 if ($define{'PERL_IMPLICIT_CONTEXT'}) {
 576     skip_symbols [qw(
 577                     PL_sig_sv
 578                     )];
 579 }
 580
 581 if ($define{'PERL_IMPLICIT_SYS'}) {
 582     skip_symbols [qw(
 583                     Perl_getenv_len
 584                     Perl_my_popen
 585                     Perl_my_pclose
 586                     )];
 587 }
 588 else {
 589     skip_symbols [qw(
 590                     PL_Mem
 591                     PL_MemShared
 592                     PL_MemParse
 593                     PL_Env
 594                     PL_StdIO
 595                     PL_LIO
 596                     PL_Dir
 597                     PL_Sock
 598                     PL_Proc
 599                     )];
 600 }
 601
 602 unless ($define{'PERL_OLD_COPY_ON_WRITE'}) {
 603     skip_symbols [qw(
 604                     Perl_sv_setsv_cow
 605                     Perl_sv_release_IVX
 606                   )];
 607 }
 608
 609 unless ($define{'USE_REENTRANT_API'}) {
 610     skip_symbols [qw(
 611                     PL_reentrant_buffer
 612                     )];
 613 }
 614
 615 if ($define{'MYMALLOC'}) {
 616     emit_symbols [qw(
 617                     Perl_dump_mstats
 618                     Perl_get_mstats
 619                     Perl_strdup
 620                     Perl_putenv
 621                     MallocCfg_ptr
 622                     MallocCfgP_ptr
 623                     )];
 624     if ($define{'USE_ITHREADS'}) {
 625         emit_symbols [qw(
 626                         PL_malloc_mutex
 627                         )];
 628     }
 629     else {
 630         skip_symbols [qw(
 631                         PL_malloc_mutex
 632                         )];
 633     }
 634 }
 635 else {
 636     skip_symbols [qw(
 637                     PL_malloc_mutex
 638                     Perl_dump_mstats
 639                     Perl_get_mstats
 640                     Perl_malloced_size
 641                     MallocCfg_ptr
 642                     MallocCfgP_ptr
 643                     )];
 644 }
 645
 646 unless ($define{'PERL_MALLOC_WRAP'}) {
 647     skip_symbols [qw(
 648                     PL_memory_wrap
 649                     )];
 650 }
 651
 652 unless ($define{'USE_ITHREADS'}) {
 653     skip_symbols [qw(
 654                     PL_thr_key
 655                     )];
 656 }
 657
 658 # USE_5005THREADS symbols. Kept as reference for easier removal
 659     skip_symbols [qw(
 660                     PL_sv_mutex
 661                     PL_strtab_mutex
 662                     PL_svref_mutex
 663                     PL_cred_mutex
 664                     PL_eval_mutex
 665                     PL_fdpid_mutex
 666                     PL_sv_lock_mutex
 667                     PL_eval_cond
 668                     PL_eval_owner
 669                     PL_threads_mutex
 670                     PL_nthreads
 671                     PL_nthreads_cond
 672                     PL_threadnum
 673                     PL_threadsv_names
 674                     PL_thrsv
 675                     PL_vtbl_mutex
 676                     Perl_condpair_magic
 677                     Perl_new_struct_thread
 678                     Perl_per_thread_magicals
 679                     Perl_thread_create
 680                     Perl_find_threadsv
 681                     Perl_unlock_condpair
 682                     Perl_magic_mutexfree
 683                     Perl_sv_lock
 684                     )];
 685
 686 unless ($define{'USE_ITHREADS'}) {
 687     skip_symbols [qw(
 688                     PL_ptr_table
 689                     PL_pte_root
 690                     PL_pte_arenaroot
 691                     PL_op_mutex
 692                     PL_regex_pad
 693                     PL_regex_padav
 694                     PL_shared_hek_table
 695                     PL_sharedsv_space
 696                     PL_sharedsv_space_mutex
 697                     PL_dollarzero_mutex
 698                     Perl_dirp_dup
 699                     Perl_cx_dup
 700                     Perl_si_dup
 701                     Perl_any_dup
 702                     Perl_ss_dup
 703                     Perl_fp_dup
 704                     Perl_gp_dup
 705                     Perl_he_dup
 706                     Perl_mg_dup
 707                     Perl_re_dup
 708                     Perl_sv_dup
 709                     Perl_rvpv_dup
 710                     Perl_hek_dup
 711                     Perl_sys_intern_dup
 712                     Perl_ptr_table_clear
 713                     Perl_ptr_table_fetch
 714                     Perl_ptr_table_free
 715                     Perl_ptr_table_new
 716                     Perl_ptr_table_clear
 717                     Perl_ptr_table_free
 718                     Perl_ptr_table_split
 719                     Perl_ptr_table_store
 720                     perl_clone
 721                     perl_clone_using
 722                     Perl_sharedsv_find
 723                     Perl_sharedsv_init
 724                     Perl_sharedsv_lock
 725                     Perl_sharedsv_new
 726                     Perl_sharedsv_thrcnt_dec
 727                     Perl_sharedsv_thrcnt_inc
 728                     Perl_sharedsv_unlock
 729                     )];
 730 }
 731
 732 unless ($define{'PERL_IMPLICIT_CONTEXT'}) {
 733     skip_symbols [qw(
 734                     Perl_croak_nocontext
 735                     Perl_die_nocontext
 736                     Perl_deb_nocontext
 737                     Perl_form_nocontext
 738                     Perl_load_module_nocontext
 739                     Perl_mess_nocontext
 740                     Perl_warn_nocontext
 741                     Perl_warner_nocontext
 742                     Perl_newSVpvf_nocontext
 743                     Perl_sv_catpvf_nocontext
 744                     Perl_sv_setpvf_nocontext
 745                     Perl_sv_catpvf_mg_nocontext
 746                     Perl_sv_setpvf_mg_nocontext
 747                     )];
 748 }
 749
 750 unless ($define{'PERL_IMPLICIT_SYS'}) {
 751     skip_symbols [qw(
 752                     perl_alloc_using
 753                     perl_clone_using
 754                     )];
 755 }
 756
 757 unless ($define{'FAKE_THREADS'}) {
 758     skip_symbols [qw(PL_curthr)];
 759 }
 760
 761 unless ($define{'PL_OP_SLAB_ALLOC'}) {
 762     skip_symbols [qw(
 763                      PL_OpPtr
 764                      PL_OpSlab
 765                      PL_OpSpace
 766                      Perl_Slab_Alloc
 767                      Perl_Slab_Free
 768                     )];
 769 }
 770
 771 unless ($define{'THREADS_HAVE_PIDS'}) {
 772     skip_symbols [qw(PL_ppid)];
 773 }
 774
 775 unless ($define{'PERL_NEED_APPCTX'}) {
 776     skip_symbols [qw(
 777                     PL_appctx
 778                     )];
 779 }
 780
 781 unless ($define{'PERL_NEED_TIMESBASE'}) {
 782     skip_symbols [qw(
 783                     PL_timesbase
 784                     )];
 785 }
 786
 787 unless ($define{'d_mmap'}) {
 788     skip_symbols [qw(
 789                     PL_mmap_page_size
 790                     )];
 791 }
 792
 793 if ($define{'d_sigaction'}) {
 794     skip_symbols [qw(
 795                     PL_sig_trapped
 796                     )];
 797 }
 798
 799 if ($^O ne 'vms') {
 800     # VMS does its own thing for these symbols.
 801     skip_symbols [qw(PL_sig_handlers_initted
 802                      PL_sig_ignoring
 803                      PL_sig_defaulting)];
 804 }
 805
 806 sub readvar {
 807     my $file = shift;
 808     my $proc = shift || sub { "PL_$_[2]" };
 809     open(VARS,$file) || die "Cannot open $file: $!\n";
 810     my @syms;
 811     while (<VARS>) {
 812         # All symbols have a Perl_ prefix because that's what embed.h
 813         # sticks in front of them.  The A?I?S?C? is strictly speaking
 814         # wrong.
 815         push(@syms, &$proc($1,$2,$3)) if (/\bPERLVAR(A?I?S?C?)\(([IGT])(\w+)/);
 816     }
 817     close(VARS);
 818     return \@syms;
 819 }
 820
 821 if ($define{'PERL_GLOBAL_STRUCT'}) {
 822     my $global = readvar($perlvars_h);
 823     skip_symbols $global;
 824     emit_symbol('Perl_GetVars');
 825     emit_symbols [qw(PL_Vars PL_VarsPtr)] unless $CCTYPE eq 'GCC';
 826 } else {
 827     skip_symbols [qw(Perl_init_global_struct Perl_free_global_struct)];
 828 }
 829
 830 # functions from *.sym files
 831
 832 my @syms = ($global_sym, $globvar_sym); # $pp_sym is not part of the API
 833
 834 # Symbols that are the public face of the PerlIO layers implementation
 835 # These are in _addition to_ the public face of the abstraction
 836 # and need to be exported to allow XS modules to implement layers
 837 my @layer_syms = qw(
 838                     PerlIOBase_binmode
 839                     PerlIOBase_clearerr
 840                     PerlIOBase_close
 841                     PerlIOBase_dup
 842                     PerlIOBase_eof
 843                     PerlIOBase_error
 844                     PerlIOBase_fileno
 845                     PerlIOBase_noop_fail
 846                     PerlIOBase_noop_ok
 847                     PerlIOBase_popped
 848                     PerlIOBase_pushed
 849                     PerlIOBase_read
 850                     PerlIOBase_setlinebuf
 851                     PerlIOBase_unread
 852                     PerlIOBuf_bufsiz
 853                     PerlIOBuf_close
 854                     PerlIOBuf_dup
 855                     PerlIOBuf_fill
 856                     PerlIOBuf_flush
 857                     PerlIOBuf_get_base
 858                     PerlIOBuf_get_cnt
 859                     PerlIOBuf_get_ptr
 860                     PerlIOBuf_open
 861                     PerlIOBuf_popped
 862                     PerlIOBuf_pushed
 863                     PerlIOBuf_read
 864                     PerlIOBuf_seek
 865                     PerlIOBuf_set_ptrcnt
 866                     PerlIOBuf_tell
 867                     PerlIOBuf_unread
 868                     PerlIOBuf_write
 869                     PerlIO_allocate
 870                     PerlIO_apply_layera
 871                     PerlIO_apply_layers
 872                     PerlIO_arg_fetch
 873                     PerlIO_debug
 874                     PerlIO_define_layer
 875                     PerlIO_isutf8
 876                     PerlIO_layer_fetch
 877                     PerlIO_list_free
 878                     PerlIO_modestr
 879                     PerlIO_parse_layers
 880                     PerlIO_pending
 881                     PerlIO_perlio
 882                     PerlIO_pop
 883                     PerlIO_push
 884                     PerlIO_sv_dup
 885                     Perl_PerlIO_clearerr
 886                     Perl_PerlIO_close
 887                     Perl_PerlIO_eof
 888                     Perl_PerlIO_error
 889                     Perl_PerlIO_fileno
 890                     Perl_PerlIO_fill
 891                     Perl_PerlIO_flush
 892                     Perl_PerlIO_get_base
 893                     Perl_PerlIO_get_bufsiz
 894                     Perl_PerlIO_get_cnt
 895                     Perl_PerlIO_get_ptr
 896                     Perl_PerlIO_read
 897                     Perl_PerlIO_seek
 898                     Perl_PerlIO_set_cnt
 899                     Perl_PerlIO_set_ptrcnt
 900                     Perl_PerlIO_setlinebuf
 901                     Perl_PerlIO_stderr
 902                     Perl_PerlIO_stdin
 903                     Perl_PerlIO_stdout
 904                     Perl_PerlIO_tell
 905                     Perl_PerlIO_unread
 906                     Perl_PerlIO_write
 907 );
 908 if ($PLATFORM eq 'netware') {
 909     push(@layer_syms,'PL_def_layerlist','PL_known_layers','PL_perlio');
 910 }
 911
 912 if ($define{'USE_PERLIO'}) {
 913     # Export the symols that make up the PerlIO abstraction, regardless
 914     # of its implementation - read from a file
 915     push @syms, $perlio_sym;
 916
 917     # This part is then dependent on how the abstraction is implemented
 918     if ($define{'USE_SFIO'}) {
 919         # Old legacy non-stdio "PerlIO"
 920         skip_symbols \@layer_syms;
 921         skip_symbols [qw(perlsio_binmode)];
 922         # SFIO defines most of the PerlIO routines as macros
 923         # So undo most of what $perlio_sym has just done - d'oh !
 924         # Perhaps it would be better to list the ones which do exist
 925         # And emit them
 926         skip_symbols [qw(
 927                          PerlIO_canset_cnt
 928                          PerlIO_clearerr
 929                          PerlIO_close
 930                          PerlIO_eof
 931                          PerlIO_error
 932                          PerlIO_exportFILE
 933                          PerlIO_fast_gets
 934                          PerlIO_fdopen
 935                          PerlIO_fileno
 936                          PerlIO_findFILE
 937                          PerlIO_flush
 938                          PerlIO_get_base
 939                          PerlIO_get_bufsiz
 940                          PerlIO_get_cnt
 941                          PerlIO_get_ptr
 942                          PerlIO_getc
 943                          PerlIO_getname
 944                          PerlIO_has_base
 945                          PerlIO_has_cntptr
 946                          PerlIO_importFILE
 947                          PerlIO_open
 948                          PerlIO_printf
 949                          PerlIO_putc
 950                          PerlIO_puts
 951                          PerlIO_read
 952                          PerlIO_releaseFILE
 953                          PerlIO_reopen
 954                          PerlIO_rewind
 955                          PerlIO_seek
 956                          PerlIO_set_cnt
 957                          PerlIO_set_ptrcnt
 958                          PerlIO_setlinebuf
 959                          PerlIO_sprintf
 960                          PerlIO_stderr
 961                          PerlIO_stdin
 962                          PerlIO_stdout
 963                          PerlIO_stdoutf
 964                          PerlIO_tell
 965                          PerlIO_ungetc
 966                          PerlIO_vprintf
 967                          PerlIO_write
 968                          PerlIO_perlio
 969                          Perl_PerlIO_clearerr
 970                          Perl_PerlIO_close
 971                          Perl_PerlIO_eof
 972                          Perl_PerlIO_error
 973                          Perl_PerlIO_fileno
 974                          Perl_PerlIO_fill
 975                          Perl_PerlIO_flush
 976                          Perl_PerlIO_get_base
 977                          Perl_PerlIO_get_bufsiz
 978                          Perl_PerlIO_get_cnt
 979                          Perl_PerlIO_get_ptr
 980                          Perl_PerlIO_read
 981                          Perl_PerlIO_seek
 982                          Perl_PerlIO_set_cnt
 983                          Perl_PerlIO_set_ptrcnt
 984                          Perl_PerlIO_setlinebuf
 985                          Perl_PerlIO_stderr
 986                          Perl_PerlIO_stdin
 987                          Perl_PerlIO_stdout
 988                          Perl_PerlIO_tell
 989                          Perl_PerlIO_unread
 990                          Perl_PerlIO_write
 991                          PL_def_layerlist
 992                          PL_known_layers
 993                          PL_perlio
 994                          )];
 995     }
 996     else {
 997         # PerlIO with layers - export implementation
 998         emit_symbols \@layer_syms;
 999         emit_symbols [qw(perlsio_binmode)];
1000     }
1001 } else {
1002         # -Uuseperlio
1003         # Skip the PerlIO layer symbols - although
1004         # nothing should have exported them anyway.
1005         skip_symbols \@layer_syms;
1006         skip_symbols [qw(perlsio_binmode)];
1007         skip_symbols [qw(PL_def_layerlist PL_known_layers PL_perlio)];
1008
1009         # Also do NOT add abstraction symbols from $perlio_sym
1010         # abstraction is done as #define to stdio
1011         # Remaining remnants that _may_ be functions
1012         # are handled in <DATA>
1013 }
1014
1015 for my $syms (@syms) {
1016     open (GLOBAL, "<$syms") || die "failed to open $syms: $!\n";
1017     while (<GLOBAL>) {
1018         next if (!/^[A-Za-z]/);
1019         # Functions have a Perl_ prefix
1020         # Variables have a PL_ prefix
1021         chomp($_);
1022         my $symbol = ($syms =~ /var\.sym$/i ? "PL_" : "");
1023         $symbol .= $_;
1024         emit_symbol($symbol) unless exists $skip{$symbol};
1025     }
1026     close(GLOBAL);
1027 }
1028
1029 # variables
1030
1031 if ($define{'MULTIPLICITY'}) {
1032     for my $f ($perlvars_h, $intrpvar_h, $thrdvar_h) {
1033         my $glob = readvar($f, sub { "Perl_" . $_[1] . $_[2] . "_ptr" });
1034         emit_symbols $glob;
1035     }
1036     # XXX AIX seems to want the perlvars.h symbols, for some reason
1037     if ($PLATFORM eq 'aix' or $PLATFORM eq 'os2') {     # OS/2 needs PL_thr_key
1038         my $glob = readvar($perlvars_h);
1039         emit_symbols $glob;
1040     }
1041 }
1042 else {
1043     unless ($define{'PERL_GLOBAL_STRUCT'}) {
1044         my $glob = readvar($perlvars_h);
1045         emit_symbols $glob;
1046     }
1047     unless ($define{'MULTIPLICITY'}) {
1048         my $glob = readvar($intrpvar_h);
1049         emit_symbols $glob;
1050     }
1051     unless ($define{'MULTIPLICITY'}) {
1052         my $glob = readvar($thrdvar_h);
1053         emit_symbols $glob;
1054     }
1055 }
1056
1057 sub try_symbol {
1058     my $symbol = shift;
1059
1060     return if $symbol !~ /^[A-Za-z_]/;
1061     return if $symbol =~ /^\#/;
1062     $symbol =~s/\r//g;
1063     chomp($symbol);
1064     return if exists $skip{$symbol};
1065     emit_symbol($symbol);
1066 }
1067
1068 while (<DATA>) {
1069     try_symbol($_);
1070 }
1071
1072 if ($PLATFORM =~ /^win(?:32|ce)$/) {
1073     foreach my $symbol (qw(
1074                             setuid
1075                             setgid
1076                             boot_DynaLoader
1077                             Perl_init_os_extras
1078                             Perl_thread_create
1079                             Perl_win32_init
1080                             Perl_win32_term
1081                             RunPerl
1082                             win32_async_check
1083                             win32_errno
1084                             win32_environ
1085                             win32_abort
1086                             win32_fstat
1087                             win32_stat
1088                             win32_pipe
1089                             win32_popen
1090                             win32_pclose
1091                             win32_rename
1092                             win32_setmode
1093                             win32_chsize
1094                             win32_lseek
1095                             win32_tell
1096                             win32_dup
1097                             win32_dup2
1098                             win32_open
1099                             win32_close
1100                             win32_eof
1101                             win32_read
1102                             win32_write
1103                             win32_spawnvp
1104                             win32_mkdir
1105                             win32_rmdir
1106                             win32_chdir
1107                             win32_flock
1108                             win32_execv
1109                             win32_execvp
1110                             win32_htons
1111                             win32_ntohs
1112                             win32_htonl
1113                             win32_ntohl
1114                             win32_inet_addr
1115                             win32_inet_ntoa
1116                             win32_socket
1117                             win32_bind
1118                             win32_listen
1119                             win32_accept
1120                             win32_connect
1121                             win32_send
1122                             win32_sendto
1123                             win32_recv
1124                             win32_recvfrom
1125                             win32_shutdown
1126                             win32_closesocket
1127                             win32_ioctlsocket
1128                             win32_setsockopt
1129                             win32_getsockopt
1130                             win32_getpeername
1131                             win32_getsockname
1132                             win32_gethostname
1133                             win32_gethostbyname
1134                             win32_gethostbyaddr
1135                             win32_getprotobyname
1136                             win32_getprotobynumber
1137                             win32_getservbyname
1138                             win32_getservbyport
1139                             win32_select
1140                             win32_endhostent
1141                             win32_endnetent
1142                             win32_endprotoent
1143                             win32_endservent
1144                             win32_getnetent
1145                             win32_getnetbyname
1146                             win32_getnetbyaddr
1147                             win32_getprotoent
1148                             win32_getservent
1149                             win32_sethostent
1150                             win32_setnetent
1151                             win32_setprotoent
1152                             win32_setservent
1153                             win32_getenv
1154                             win32_putenv
1155                             win32_perror
1156                             win32_malloc
1157                             win32_calloc
1158                             win32_realloc
1159                             win32_free
1160                             win32_sleep
1161                             win32_times
1162                             win32_access
1163                             win32_alarm
1164                             win32_chmod
1165                             win32_open_osfhandle
1166                             win32_get_osfhandle
1167                             win32_ioctl
1168                             win32_link
1169                             win32_unlink
1170                             win32_utime
1171                             win32_gettimeofday
1172                             win32_uname
1173                             win32_wait
1174                             win32_waitpid
1175                             win32_kill
1176                             win32_str_os_error
1177                             win32_opendir
1178                             win32_readdir
1179                             win32_telldir
1180                             win32_seekdir
1181                             win32_rewinddir
1182                             win32_closedir
1183                             win32_longpath
1184                             win32_os_id
1185                             win32_getpid
1186                             win32_crypt
1187                             win32_dynaload
1188                             win32_get_childenv
1189                             win32_free_childenv
1190                             win32_clearenv
1191                             win32_get_childdir
1192                             win32_free_childdir
1193                             win32_stdin
1194                             win32_stdout
1195                             win32_stderr
1196                             win32_ferror
1197                             win32_feof
1198                             win32_strerror
1199                             win32_fprintf
1200                             win32_printf
1201                             win32_vfprintf
1202                             win32_vprintf
1203                             win32_fread
1204                             win32_fwrite
1205                             win32_fopen
1206                             win32_fdopen
1207                             win32_freopen
1208                             win32_fclose
1209                             win32_fputs
1210                             win32_fputc
1211                             win32_ungetc
1212                             win32_getc
1213                             win32_fileno
1214                             win32_clearerr
1215                             win32_fflush
1216                             win32_ftell
1217                             win32_fseek
1218                             win32_fgetpos
1219                             win32_fsetpos
1220                             win32_rewind
1221                             win32_tmpfile
1222                             win32_setbuf
1223                             win32_setvbuf
1224                             win32_flushall
1225                             win32_fcloseall
1226                             win32_fgets
1227                             win32_gets
1228                             win32_fgetc
1229                             win32_putc
1230                             win32_puts
1231                             win32_getchar
1232                             win32_putchar
1233                            ))
1234     {
1235         try_symbol($symbol);
1236     }
1237 }
1238 elsif ($PLATFORM eq 'os2') {
1239     open MAP, 'miniperl.map' or die 'Cannot read miniperl.map';
1240     /^\s*[\da-f:]+\s+(\w+)/i and $mapped{$1}++ foreach <MAP>;
1241     close MAP or die 'Cannot close miniperl.map';
1242
1243     @missing = grep { !exists $mapped{$_} }
1244                     keys %export;
1245     @missing = grep { !exists $exportperlmalloc{$_} } @missing;
1246     delete $export{$_} foreach @missing;
1247 }
1248 elsif ($PLATFORM eq 'MacOS') {
1249     open MACSYMS, 'macperl.sym' or die 'Cannot read macperl.sym';
1250
1251     while (<MACSYMS>) {
1252         try_symbol($_);
1253     }
1254
1255     close MACSYMS;
1256 }
1257 elsif ($PLATFORM eq 'netware') {
1258 foreach my $symbol (qw(
1259                         boot_DynaLoader
1260                         Perl_init_os_extras
1261                         Perl_thread_create
1262                         Perl_nw5_init
1263                         RunPerl
1264                         AllocStdPerl
1265                         FreeStdPerl
1266                         do_spawn2
1267                         do_aspawn
1268                         nw_uname
1269                         nw_stdin
1270                         nw_stdout
1271                         nw_stderr
1272                         nw_feof
1273                         nw_ferror
1274                         nw_fopen
1275                         nw_fclose
1276                         nw_clearerr
1277                         nw_getc
1278                         nw_fgets
1279                         nw_fputc
1280                         nw_fputs
1281                         nw_fflush
1282                         nw_ungetc
1283                         nw_fileno
1284                         nw_fdopen
1285                         nw_freopen
1286                         nw_fread
1287                         nw_fwrite
1288                         nw_setbuf
1289                         nw_setvbuf
1290                         nw_vfprintf
1291                         nw_ftell
1292                         nw_fseek
1293                         nw_rewind
1294                         nw_tmpfile
1295                         nw_fgetpos
1296                         nw_fsetpos
1297                         nw_dup
1298                         nw_access
1299                         nw_chmod
1300                         nw_chsize
1301                         nw_close
1302                         nw_dup2
1303                         nw_flock
1304                         nw_isatty
1305                         nw_link
1306                         nw_lseek
1307                         nw_stat
1308                         nw_mktemp
1309                         nw_open
1310                         nw_read
1311                         nw_rename
1312                         nw_setmode
1313                         nw_unlink
1314                         nw_utime
1315                         nw_write
1316                         nw_chdir
1317                         nw_rmdir
1318                         nw_closedir
1319                         nw_opendir
1320                         nw_readdir
1321                         nw_rewinddir
1322                         nw_seekdir
1323                         nw_telldir
1324                         nw_htonl
1325                         nw_htons
1326                         nw_ntohl
1327                         nw_ntohs
1328                         nw_accept
1329                         nw_bind
1330                         nw_connect
1331                         nw_endhostent
1332                         nw_endnetent
1333                         nw_endprotoent
1334                         nw_endservent
1335                         nw_gethostbyaddr
1336                         nw_gethostbyname
1337                         nw_gethostent
1338                         nw_gethostname
1339                         nw_getnetbyaddr
1340                         nw_getnetbyname
1341                         nw_getnetent
1342                         nw_getpeername
1343                         nw_getprotobyname
1344                         nw_getprotobynumber
1345                         nw_getprotoent
1346                         nw_getservbyname
1347                         nw_getservbyport
1348                         nw_getservent
1349                         nw_getsockname
1350                         nw_getsockopt
1351                         nw_inet_addr
1352                         nw_listen
1353                         nw_socket
1354                         nw_recv
1355                         nw_recvfrom
1356                         nw_select
1357                         nw_send
1358                         nw_sendto
1359                         nw_sethostent
1360                         nw_setnetent
1361                         nw_setprotoent
1362                         nw_setservent
1363                         nw_setsockopt
1364                         nw_inet_ntoa
1365                         nw_shutdown
1366                         nw_crypt
1367                         nw_execvp
1368                         nw_kill
1369                         nw_Popen
1370                         nw_Pclose
1371                         nw_Pipe
1372                         nw_times
1373                         nw_waitpid
1374                         nw_getpid
1375                         nw_spawnvp
1376                         nw_os_id
1377                         nw_open_osfhandle
1378                         nw_get_osfhandle
1379                         nw_abort
1380                         nw_sleep
1381                         nw_wait
1382                         nw_dynaload
1383                         nw_strerror
1384                         fnFpSetMode
1385                         fnInsertHashListAddrs
1386                         fnGetHashListAddrs
1387                         Perl_deb
1388                         Perl_sv_setsv
1389                         Perl_sv_catsv
1390                         Perl_sv_catpvn
1391                         Perl_sv_2pv
1392                         nw_freeenviron
1393                         Remove_Thread_Ctx
1394                            ))
1395     {
1396         try_symbol($symbol);
1397     }
1398 }
1399
1400 # records of type boot_module for statically linked modules (except Dynaloader)
1401 $static_ext =~ s/\//__/g;
1402 $static_ext =~ s/\bDynaLoader\b//;
1403 my @stat_mods = map {"boot_$_"} grep {/\S/} split /\s+/, $static_ext;
1404 foreach my $symbol (@stat_mods)
1405     {
1406         try_symbol($symbol);
1407     }
1408
1409 # Now all symbols should be defined because
1410 # next we are going to output them.
1411
1412 foreach my $symbol (sort keys %export) {
1413     output_symbol($symbol);
1414 }
1415
1416 if ($PLATFORM eq 'os2') {
1417         print <<EOP;
1418     dll_perlmain=main
1419     fill_extLibpath
1420     dir_subst
1421     Perl_OS2_handler_install
1422
1423 ; LAST_ORDINAL=$sym_ord
1424 EOP
1425 }
1426
1427 sub emit_symbol {
1428     my $symbol = shift;
1429     chomp($symbol);
1430     $export{$symbol} = 1;
1431 }
1432
1433 sub output_symbol {
1434     my $symbol = shift;
1435     if ($PLATFORM =~ /^win(?:32|ce)$/) {
1436         $symbol = "_$symbol" if $CCTYPE eq 'BORLAND';
1437         print "\t$symbol\n";
1438 # XXX: binary compatibility between compilers is an exercise
1439 # in frustration :-(
1440 #        if ($CCTYPE eq "BORLAND") {
1441 #           # workaround Borland quirk by exporting both the straight
1442 #           # name and a name with leading underscore.  Note the
1443 #           # alias *must* come after the symbol itself, if both
1444 #           # are to be exported. (Linker bug?)
1445 #           print "\t_$symbol\n";
1446 #           print "\t$symbol = _$symbol\n";
1447 #       }
1448 #       elsif ($CCTYPE eq 'GCC') {
1449 #           # Symbols have leading _ whole process is $%@"% slow
1450 #           # so skip aliases for now
1451 #           nprint "\t$symbol\n";
1452 #       }
1453 #       else {
1454 #           # for binary coexistence, export both the symbol and
1455 #           # alias with leading underscore
1456 #           print "\t$symbol\n";
1457 #           print "\t_$symbol = $symbol\n";
1458 #       }
1459     }
1460     elsif ($PLATFORM eq 'os2') {
1461         printf qq(    %-31s \@%s\n),
1462           qq("$symbol"), $ordinal{$symbol} || ++$sym_ord;
1463         printf qq(    %-31s \@%s\n),
1464           qq("$exportperlmalloc{$symbol}" = "$symbol"),
1465           $ordinal{$exportperlmalloc{$symbol}} || ++$sym_ord
1466           if $exportperlmalloc and exists $exportperlmalloc{$symbol};
1467     }
1468     elsif ($PLATFORM eq 'aix' || $PLATFORM eq 'MacOS') {
1469         print "$symbol\n";
1470     }
1471         elsif ($PLATFORM eq 'netware') {
1472         print "\t$symbol,\n";
1473         }
1474 }
1475
1476 1;
1477 __DATA__
1478 # extra globals not included above.
1479 Perl_cxinc
1480 perl_alloc
1481 perl_alloc_using
1482 perl_clone
1483 perl_clone_using
1484 perl_construct
1485 perl_destruct
1486 perl_free
1487 perl_parse
1488 perl_run
1489 # Oddities from PerlIO
1490 PerlIO_binmode
1491 PerlIO_getpos
1492 PerlIO_init
1493 PerlIO_setpos
1494 PerlIO_sprintf
1495 PerlIO_sv_dup
1496 PerlIO_tmpfile
1497 PerlIO_vsprintf