0f42504f97ef2af90198a412b7d85b678bef4eff
[openssl.git] / util / mkdef.pl
1 #!/usr/local/bin/perl -w
2 #
3 # generate a .def file
4 #
5 # It does this by parsing the header files and looking for the
6 # prototyped functions: it then prunes the output.
7 #
8 # Intermediary files are created, call libeay.num and ssleay.num,...
9 # Previously, they had the following format:
10 #
11 #       routine-name    nnnn
12 #
13 # But that isn't enough for a number of reasons, the first on being that
14 # this format is (needlessly) very Win32-centric, and even then...
15 # One of the biggest problems is that there's no information about what
16 # routines should actually be used, which varies with what crypto algorithms
17 # are disabled.  Also, some operating systems (for example VMS with VAX C)
18 # need to keep track of the global variables as well as the functions.
19 #
20 # So, a remake of this script is done so as to include information on the
21 # kind of symbol it is (function or variable) and what algorithms they're
22 # part of.  This will allow easy translating to .def files or the corresponding
23 # file in other operating systems (a .opt file for VMS, possibly with a .mar
24 # file).
25 #
26 # The format now becomes:
27 #
28 #       routine-name    nnnn    info
29 #
30 # and the "info" part is actually a colon-separated string of fields with
31 # the following meaning:
32 #
33 #       existence:platform:kind:algorithms
34 #
35 # - "existence" can be "EXIST" or "NOEXIST" depending on if the symbol is
36 #   found somewhere in the source, 
37 # - "platforms" is empty if it exists on all platforms, otherwise it contains
38 #   comma-separated list of the platform, just as they are if the symbol exists
39 #   for those platforms, or prepended with a "!" if not.  This helps resolve
40 #   symbol name variants for platforms where the names are too long for the
41 #   compiler or linker, or if the systems is case insensitive and there is a
42 #   clash, or the symbol is implemented differently (see
43 #   EXPORT_VAR_AS_FUNCTION).  This script assumes renaming of symbols is found
44 #   in the file crypto/symhacks.h.
45 #   The semantics for the platforms is that every item is checked against the
46 #   environment.  For the negative items ("!FOO"), if any of them is false
47 #   (i.e. "FOO" is true) in the environment, the corresponding symbol can't be
48 #   used.  For the positive itms, if all of them are false in the environment,
49 #   the corresponding symbol can't be used.  Any combination of positive and
50 #   negative items are possible, and of course leave room for some redundancy.
51 # - "kind" is "FUNCTION" or "VARIABLE".  The meaning of that is obvious.
52 # - "algorithms" is a comma-separated list of algorithm names.  This helps
53 #   exclude symbols that are part of an algorithm that some user wants to
54 #   exclude.
55 #
56
57 my $debug=0;
58
59 my $crypto_num= "util/libeay.num";
60 my $ssl_num=    "util/ssleay.num";
61 my $libname;
62
63 my $do_update = 0;
64 my $do_rewrite = 1;
65 my $do_crypto = 0;
66 my $do_ssl = 0;
67 my $do_ctest = 0;
68 my $do_ctestall = 0;
69 my $do_checkexist = 0;
70
71 my $VMSVAX=0;
72 my $VMSNonVAX=0;
73 my $VMS=0;
74 my $W32=0;
75 my $W16=0;
76 my $NT=0;
77 my $OS2=0;
78 # Set this to make typesafe STACK definitions appear in DEF
79 my $safe_stack_def = 0;
80
81 my @known_platforms = ( "__FreeBSD__", "PERL5", "NeXT",
82                         "EXPORT_VAR_AS_FUNCTION", "ZLIB",
83                         "OPENSSL_FIPS", "OPENSSL_FIPSCAPABLE" );
84 my @known_ossl_platforms = ( "VMS", "WIN16", "WIN32", "WINNT", "OS2" );
85 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
86                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
87                          "SHA256", "SHA512", "RIPEMD",
88                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "ECDH", "ECDSA", "EC2M",
89                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST",
90                          # EC_NISTP_64_GCC_128
91                          "EC_NISTP_64_GCC_128",
92                          # Envelope "algorithms"
93                          "EVP", "X509", "ASN1_TYPEDEFS",
94                          # Helper "algorithms"
95                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
96                          "LOCKING",
97                          # External "algorithms"
98                          "FP_API", "STDIO", "SOCK", "KRB5", "DGRAM",
99                          # Engines
100                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
101                          # RFC3779
102                          "RFC3779",
103                          # TLS
104                          "TLSEXT", "PSK", "SRP", "HEARTBEATS",
105                          # CMS
106                          "CMS",
107                          # CryptoAPI Engine
108                          "CAPIENG",
109                          # SSL v2
110                          "SSL2",
111                          # JPAKE
112                          "JPAKE",
113                          # NEXTPROTONEG
114                          "NEXTPROTONEG",
115                          # Deprecated functions
116                          "DEPRECATED",
117                          # Hide SSL internals
118                          "SSL_INTERN",
119                          # SCTP
120                          "SCTP",
121                          # SRTP
122                          "SRTP",
123                          # SSL TRACE
124                          "SSL_TRACE",
125                          # Unit testing
126                          "UNIT_TEST");
127
128 my $options="";
129 open(IN,"<Makefile") || die "unable to open Makefile!\n";
130 while(<IN>) {
131     $options=$1 if (/^OPTIONS=(.*)$/);
132 }
133 close(IN);
134
135 # The following ciphers may be excluded (by Configure). This means functions
136 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
137 # in directory xxx is ignored.
138 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
139 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
140 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
141 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
142 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
143 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
144 my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
145 my $no_jpake; my $no_srp; my $no_ssl2; my $no_ec2m; my $no_nistp_gcc; 
146 my $no_nextprotoneg; my $no_sctp; my $no_srtp; my $no_ssl_trace;
147 my $no_unit_test;
148
149 my $fips;
150
151 my $zlib;
152
153
154 foreach (@ARGV, split(/ /, $options))
155         {
156         $debug=1 if $_ eq "debug";
157         $W32=1 if $_ eq "32";
158         $W16=1 if $_ eq "16";
159         if($_ eq "NT") {
160                 $W32 = 1;
161                 $NT = 1;
162         }
163         if ($_ eq "VMS-VAX") {
164                 $VMS=1;
165                 $VMSVAX=1;
166         }
167         if ($_ eq "VMS-NonVAX") {
168                 $VMS=1;
169                 $VMSNonVAX=1;
170         }
171         $VMS=1 if $_ eq "VMS";
172         $OS2=1 if $_ eq "OS2";
173         $fips=1 if /^fips/;
174         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
175                          || $_ eq "enable-zlib-dynamic") {
176                 $zlib = 1;
177         }
178
179         $do_ssl=1 if $_ eq "ssleay";
180         if ($_ eq "ssl") {
181                 $do_ssl=1; 
182                 $libname=$_
183         }
184         $do_crypto=1 if $_ eq "libeay";
185         if ($_ eq "crypto") {
186                 $do_crypto=1;
187                 $libname=$_;
188         }
189         $no_static_engine=1 if $_ eq "no-static-engine";
190         $no_static_engine=0 if $_ eq "enable-static-engine";
191         $do_update=1 if $_ eq "update";
192         $do_rewrite=1 if $_ eq "rewrite";
193         $do_ctest=1 if $_ eq "ctest";
194         $do_ctestall=1 if $_ eq "ctestall";
195         $do_checkexist=1 if $_ eq "exist";
196         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
197
198         if    (/^no-rc2$/)      { $no_rc2=1; }
199         elsif (/^no-rc4$/)      { $no_rc4=1; }
200         elsif (/^no-rc5$/)      { $no_rc5=1; }
201         elsif (/^no-idea$/)     { $no_idea=1; }
202         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
203         elsif (/^no-bf$/)       { $no_bf=1; }
204         elsif (/^no-cast$/)     { $no_cast=1; }
205         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
206         elsif (/^no-md2$/)      { $no_md2=1; }
207         elsif (/^no-md4$/)      { $no_md4=1; }
208         elsif (/^no-md5$/)      { $no_md5=1; }
209         elsif (/^no-sha$/)      { $no_sha=1; }
210         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
211         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
212         elsif (/^no-rsa$/)      { $no_rsa=1; }
213         elsif (/^no-dsa$/)      { $no_dsa=1; }
214         elsif (/^no-dh$/)       { $no_dh=1; }
215         elsif (/^no-ec$/)       { $no_ec=1; }
216         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
217         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
218         elsif (/^no-hmac$/)     { $no_hmac=1; }
219         elsif (/^no-aes$/)      { $no_aes=1; }
220         elsif (/^no-camellia$/) { $no_camellia=1; }
221         elsif (/^no-seed$/)     { $no_seed=1; }
222         elsif (/^no-evp$/)      { $no_evp=1; }
223         elsif (/^no-lhash$/)    { $no_lhash=1; }
224         elsif (/^no-stack$/)    { $no_stack=1; }
225         elsif (/^no-err$/)      { $no_err=1; }
226         elsif (/^no-buffer$/)   { $no_buffer=1; }
227         elsif (/^no-bio$/)      { $no_bio=1; }
228         #elsif (/^no-locking$/) { $no_locking=1; }
229         elsif (/^no-comp$/)     { $no_comp=1; }
230         elsif (/^no-dso$/)      { $no_dso=1; }
231         elsif (/^no-krb5$/)     { $no_krb5=1; }
232         elsif (/^no-engine$/)   { $no_engine=1; }
233         elsif (/^no-hw$/)       { $no_hw=1; }
234         elsif (/^no-gmp$/)      { $no_gmp=1; }
235         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
236         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
237         elsif (/^no-cms$/)      { $no_cms=1; }
238         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
239         elsif (/^no-ec-nistp224-64-gcc-128$/)   { $no_nistp_gcc=1; }
240         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
241         elsif (/^no-ssl2$/)     { $no_ssl2=1; }
242         elsif (/^no-ssl-trace$/) { $no_ssl_trace=1; }
243         elsif (/^no-capieng$/)  { $no_capieng=1; }
244         elsif (/^no-jpake$/)    { $no_jpake=1; }
245         elsif (/^no-srp$/)      { $no_srp=1; }
246         elsif (/^no-sctp$/)     { $no_sctp=1; }
247         elsif (/^no-srtp$/)     { $no_srtp=1; }
248         elsif (/^no-unit-test$/){ $no_unit_test=1; }
249         }
250
251
252 if (!$libname) { 
253         if ($do_ssl) {
254                 $libname="SSLEAY";
255         }
256         if ($do_crypto) {
257                 $libname="LIBEAY";
258         }
259 }
260
261 # If no platform is given, assume WIN32
262 if ($W32 + $W16 + $VMS + $OS2 == 0) {
263         $W32 = 1;
264 }
265
266 # Add extra knowledge
267 if ($W16) {
268         $no_fp_api=1;
269 }
270
271 if (!$do_ssl && !$do_crypto)
272         {
273         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
274         exit(1);
275         }
276
277 %ssl_list=&load_numbers($ssl_num);
278 $max_ssl = $max_num;
279 %crypto_list=&load_numbers($crypto_num);
280 $max_crypto = $max_num;
281
282 my $ssl="ssl/ssl.h";
283 $ssl.=" ssl/kssl.h";
284 $ssl.=" ssl/tls1.h";
285 $ssl.=" ssl/srtp.h";
286
287 my $crypto ="crypto/crypto.h";
288 $crypto.=" crypto/cryptlib.h";
289 $crypto.=" crypto/o_dir.h";
290 $crypto.=" crypto/o_str.h";
291 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
292 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
293 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
294 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
295 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
296 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
297 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
298 $crypto.=" crypto/whrlpool/whrlpool.h" ;
299 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
300 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
301 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
302 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
303 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
304 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
305 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
306 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
307 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
308
309 $crypto.=" crypto/bn/bn.h";
310 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
311 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
312 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
313 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
314 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
315 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
316 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
317 $crypto.=" crypto/cmac/cmac.h" ;
318
319 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
320 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
321 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
322 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
323 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
324 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
325 $crypto.=" crypto/conf/conf.h";
326 $crypto.=" crypto/txt_db/txt_db.h";
327
328 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
329 $crypto.=" crypto/objects/objects.h";
330 $crypto.=" crypto/pem/pem.h";
331 #$crypto.=" crypto/meth/meth.h";
332 $crypto.=" crypto/asn1/asn1.h";
333 $crypto.=" crypto/asn1/asn1t.h";
334 $crypto.=" crypto/asn1/asn1_mac.h";
335 $crypto.=" crypto/err/err.h" ; # unless $no_err;
336 $crypto.=" crypto/pkcs7/pkcs7.h";
337 $crypto.=" crypto/pkcs12/pkcs12.h";
338 $crypto.=" crypto/x509/x509.h";
339 $crypto.=" crypto/x509/x509_vfy.h";
340 $crypto.=" crypto/x509v3/x509v3.h";
341 $crypto.=" crypto/ts/ts.h";
342 $crypto.=" crypto/rand/rand.h";
343 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
344 $crypto.=" crypto/ocsp/ocsp.h";
345 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
346 $crypto.=" crypto/krb5/krb5_asn.h";
347 #$crypto.=" crypto/store/store.h";
348 $crypto.=" crypto/pqueue/pqueue.h";
349 $crypto.=" crypto/cms/cms.h";
350 $crypto.=" crypto/jpake/jpake.h";
351 $crypto.=" crypto/srp/srp.h";
352 $crypto.=" crypto/modes/modes.h";
353 #$crypto.=" fips/fips.h fips/rand/fips_rand.h";
354
355 my $symhacks="crypto/symhacks.h";
356
357 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
358 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
359
360 if ($do_update) {
361
362 if ($do_ssl == 1) {
363
364         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
365         if ($do_rewrite == 1) {
366                 open(OUT, ">$ssl_num");
367                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
368         } else {
369                 open(OUT, ">>$ssl_num");
370         }
371         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
372         close OUT;
373 }
374
375 if($do_crypto == 1) {
376
377         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
378         if ($do_rewrite == 1) {
379                 open(OUT, ">$crypto_num");
380                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
381         } else {
382                 open(OUT, ">>$crypto_num");
383         }
384         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
385         close OUT;
386
387
388 } elsif ($do_checkexist) {
389         &check_existing(*ssl_list, @ssl_symbols)
390                 if $do_ssl == 1;
391         &check_existing(*crypto_list, @crypto_symbols)
392                 if $do_crypto == 1;
393 } elsif ($do_ctest || $do_ctestall) {
394
395         print <<"EOF";
396
397 /* Test file to check all DEF file symbols are present by trying
398  * to link to all of them. This is *not* intended to be run!
399  */
400
401 int main()
402 {
403 EOF
404         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
405                 if $do_ssl == 1;
406
407         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
408                 if $do_crypto == 1;
409
410         print "}\n";
411
412 } else {
413
414         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
415                 if $do_ssl == 1;
416
417         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
418                 if $do_crypto == 1;
419
420 }
421
422
423 sub do_defs
424 {
425         my($name,$files,$symhacksfile)=@_;
426         my $file;
427         my @ret;
428         my %syms;
429         my %platform;           # For anything undefined, we assume ""
430         my %kind;               # For anything undefined, we assume "FUNCTION"
431         my %algorithm;          # For anything undefined, we assume ""
432         my %variant;
433         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
434                                 # is the same name as the original.
435         my $cpp;
436         my %unknown_algorithms = ();
437
438         foreach $file (split(/\s+/,$symhacksfile." ".$files))
439                 {
440                 print STDERR "DEBUG: starting on $file:\n" if $debug;
441                 open(IN,"<$file") || die "unable to open $file:$!\n";
442                 my $line = "", my $def= "";
443                 my %tag = (
444                         (map { $_ => 0 } @known_platforms),
445                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
446                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
447                         NOPROTO         => 0,
448                         PERL5           => 0,
449                         _WINDLL         => 0,
450                         CONST_STRICT    => 0,
451                         TRUE            => 1,
452                 );
453                 my $symhacking = $file eq $symhacksfile;
454                 my @current_platforms = ();
455                 my @current_algorithms = ();
456
457                 # params: symbol, alias, platforms, kind
458                 # The reason to put this subroutine in a variable is that
459                 # it will otherwise create it's own, unshared, version of
460                 # %tag and %variant...
461                 my $make_variant = sub
462                 {
463                         my ($s, $a, $p, $k) = @_;
464                         my ($a1, $a2);
465
466                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
467                         if (defined($p))
468                         {
469                                 $a1 = join(",",$p,
470                                            grep(!/^$/,
471                                                 map { $tag{$_} == 1 ? $_ : "" }
472                                                 @known_platforms));
473                         }
474                         else
475                         {
476                                 $a1 = join(",",
477                                            grep(!/^$/,
478                                                 map { $tag{$_} == 1 ? $_ : "" }
479                                                 @known_platforms));
480                         }
481                         $a2 = join(",",
482                                    grep(!/^$/,
483                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
484                                         @known_ossl_platforms));
485                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
486                         if ($a1 eq "") { $a1 = $a2; }
487                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
488                         if ($a eq $s)
489                         {
490                                 if (!defined($variant_cnt{$s}))
491                                 {
492                                         $variant_cnt{$s} = 0;
493                                 }
494                                 $variant_cnt{$s}++;
495                                 $a .= "{$variant_cnt{$s}}";
496                         }
497                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
498                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
499                         if (!grep(/^$togrep$/,
500                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
501                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
502                                 $variant{$s} .= $toadd;
503                         }
504                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
505                 };
506
507                 print STDERR "DEBUG: parsing ----------\n" if $debug;
508                 while(<IN>) {
509                         if (/\/\* Error codes for the \w+ functions\. \*\//)
510                                 {
511                                 undef @tag;
512                                 last;
513                                 }
514                         if ($line ne '') {
515                                 $_ = $line . $_;
516                                 $line = '';
517                         }
518
519                         if (/\\$/) {
520                                 chomp; # remove eol
521                                 chop; # remove ending backslash
522                                 $line = $_;
523                                 next;
524                         }
525
526                         if(/\/\*/) {
527                                 if (not /\*\//) {       # multiline comment...
528                                         $line = $_;     # ... just accumulate
529                                         next;
530                                 } else {
531                                         s/\/\*.*?\*\///gs;# wipe it
532                                 }
533                         }
534
535                         if ($cpp) {
536                                 $cpp++ if /^#\s*if/;
537                                 $cpp-- if /^#\s*endif/;
538                                 next;
539                         }
540                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
541
542                         s/{[^{}]*}//gs;                      # ignore {} blocks
543                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
544                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
545                         if (/^\#\s*ifndef\s+(.*)/) {
546                                 push(@tag,"-");
547                                 push(@tag,$1);
548                                 $tag{$1}=-1;
549                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
550                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
551                                 push(@tag,"-");
552                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
553                                         my $tmp_1 = $1;
554                                         my $tmp_;
555                                         foreach $tmp_ (split '\&\&',$tmp_1) {
556                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
557                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
558                                                 push(@tag,$1);
559                                                 $tag{$1}=-1;
560                                         }
561                                 } else {
562                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
563                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
564                                         push(@tag,$1);
565                                         $tag{$1}=-1;
566                                 }
567                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
568                                 push(@tag,"-");
569                                 push(@tag,$1);
570                                 $tag{$1}=1;
571                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
572                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
573                                 push(@tag,"-");
574                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
575                                         my $tmp_1 = $1;
576                                         my $tmp_;
577                                         foreach $tmp_ (split '\|\|',$tmp_1) {
578                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
579                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
580                                                 push(@tag,$1);
581                                                 $tag{$1}=1;
582                                         }
583                                 } else {
584                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
585                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
586                                         push(@tag,$1);
587                                         $tag{$1}=1;
588                                 }
589                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
590                                 my $tag_i = $#tag;
591                                 while($tag[$tag_i] ne "-") {
592                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
593                                                 $tag{$tag[$tag_i]}=2;
594                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
595                                         }
596                                         $tag_i--;
597                                 }
598                         } elsif (/^\#\s*endif/) {
599                                 my $tag_i = $#tag;
600                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
601                                         my $t=$tag[$tag_i];
602                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
603                                         if ($tag{$t}==2) {
604                                                 $tag{$t}=-1;
605                                         } else {
606                                                 $tag{$t}=0;
607                                         }
608                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
609                                         pop(@tag);
610                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
611                                                 $t=$1;
612                                         } else {
613                                                 $t="";
614                                         }
615                                         if ($t ne ""
616                                             && !grep(/^$t$/, @known_algorithms)) {
617                                                 $unknown_algorithms{$t} = 1;
618                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
619                                         }
620                                         $tag_i--;
621                                 }
622                                 pop(@tag);
623                         } elsif (/^\#\s*else/) {
624                                 my $tag_i = $#tag;
625                                 while($tag[$tag_i] ne "-") {
626                                         my $t=$tag[$tag_i];
627                                         $tag{$t}= -$tag{$t};
628                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
629                                         $tag_i--;
630                                 }
631                         } elsif (/^\#\s*if\s+1/) {
632                                 push(@tag,"-");
633                                 # Dummy tag
634                                 push(@tag,"TRUE");
635                                 $tag{"TRUE"}=1;
636                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
637                         } elsif (/^\#\s*if\s+0/) {
638                                 push(@tag,"-");
639                                 # Dummy tag
640                                 push(@tag,"TRUE");
641                                 $tag{"TRUE"}=-1;
642                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
643                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
644                                  && $symhacking && $tag{'TRUE'} != -1) {
645                                 # This is for aliasing.  When we find an alias,
646                                 # we have to invert
647                                 &$make_variant($1,$2);
648                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
649                         }
650                         if (/^\#/) {
651                                 @current_platforms =
652                                     grep(!/^$/,
653                                          map { $tag{$_} == 1 ? $_ :
654                                                    $tag{$_} == -1 ? "!".$_  : "" }
655                                          @known_platforms);
656                                 push @current_platforms
657                                     , grep(!/^$/,
658                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
659                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
660                                            @known_ossl_platforms);
661                                 @current_algorithms =
662                                     grep(!/^$/,
663                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
664                                          @known_algorithms);
665                                 $def .=
666                                     "#INFO:"
667                                         .join(',',@current_platforms).":"
668                                             .join(',',@current_algorithms).";";
669                                 next;
670                         }
671                         if ($tag{'TRUE'} != -1) {
672                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
673                                         next;
674                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
675                                         $def .= "int d2i_$3(void);";
676                                         $def .= "int i2d_$3(void);";
677                                         # Variant for platforms that do not
678                                         # have to access globale variables
679                                         # in shared libraries through functions
680                                         $def .=
681                                             "#INFO:"
682                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
683                                                     .join(',',@current_algorithms).";";
684                                         $def .= "OPENSSL_EXTERN int $2_it;";
685                                         $def .=
686                                             "#INFO:"
687                                                 .join(',',@current_platforms).":"
688                                                     .join(',',@current_algorithms).";";
689                                         # Variant for platforms that have to
690                                         # access globale variables in shared
691                                         # libraries through functions
692                                         &$make_variant("$2_it","$2_it",
693                                                       "EXPORT_VAR_AS_FUNCTION",
694                                                       "FUNCTION");
695                                         next;
696                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
697                                         $def .= "int d2i_$3(void);";
698                                         $def .= "int i2d_$3(void);";
699                                         $def .= "int $3_free(void);";
700                                         $def .= "int $3_new(void);";
701                                         # Variant for platforms that do not
702                                         # have to access globale variables
703                                         # in shared libraries through functions
704                                         $def .=
705                                             "#INFO:"
706                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
707                                                     .join(',',@current_algorithms).";";
708                                         $def .= "OPENSSL_EXTERN int $2_it;";
709                                         $def .=
710                                             "#INFO:"
711                                                 .join(',',@current_platforms).":"
712                                                     .join(',',@current_algorithms).";";
713                                         # Variant for platforms that have to
714                                         # access globale variables in shared
715                                         # libraries through functions
716                                         &$make_variant("$2_it","$2_it",
717                                                       "EXPORT_VAR_AS_FUNCTION",
718                                                       "FUNCTION");
719                                         next;
720                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
721                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
722                                         $def .= "int d2i_$1(void);";
723                                         $def .= "int i2d_$1(void);";
724                                         $def .= "int $1_free(void);";
725                                         $def .= "int $1_new(void);";
726                                         # Variant for platforms that do not
727                                         # have to access globale variables
728                                         # in shared libraries through functions
729                                         $def .=
730                                             "#INFO:"
731                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
732                                                     .join(',',@current_algorithms).";";
733                                         $def .= "OPENSSL_EXTERN int $1_it;";
734                                         $def .=
735                                             "#INFO:"
736                                                 .join(',',@current_platforms).":"
737                                                     .join(',',@current_algorithms).";";
738                                         # Variant for platforms that have to
739                                         # access globale variables in shared
740                                         # libraries through functions
741                                         &$make_variant("$1_it","$1_it",
742                                                       "EXPORT_VAR_AS_FUNCTION",
743                                                       "FUNCTION");
744                                         next;
745                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
746                                         $def .= "int d2i_$2(void);";
747                                         $def .= "int i2d_$2(void);";
748                                         # Variant for platforms that do not
749                                         # have to access globale variables
750                                         # in shared libraries through functions
751                                         $def .=
752                                             "#INFO:"
753                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
754                                                     .join(',',@current_algorithms).";";
755                                         $def .= "OPENSSL_EXTERN int $2_it;";
756                                         $def .=
757                                             "#INFO:"
758                                                 .join(',',@current_platforms).":"
759                                                     .join(',',@current_algorithms).";";
760                                         # Variant for platforms that have to
761                                         # access globale variables in shared
762                                         # libraries through functions
763                                         &$make_variant("$2_it","$2_it",
764                                                       "EXPORT_VAR_AS_FUNCTION",
765                                                       "FUNCTION");
766                                         next;
767                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
768                                         $def .= "int $1_free(void);";
769                                         $def .= "int $1_new(void);";
770                                         next;
771                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
772                                         $def .= "int d2i_$2(void);";
773                                         $def .= "int i2d_$2(void);";
774                                         $def .= "int $2_free(void);";
775                                         $def .= "int $2_new(void);";
776                                         # Variant for platforms that do not
777                                         # have to access globale variables
778                                         # in shared libraries through functions
779                                         $def .=
780                                             "#INFO:"
781                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
782                                                     .join(',',@current_algorithms).";";
783                                         $def .= "OPENSSL_EXTERN int $2_it;";
784                                         $def .=
785                                             "#INFO:"
786                                                 .join(',',@current_platforms).":"
787                                                     .join(',',@current_algorithms).";";
788                                         # Variant for platforms that have to
789                                         # access globale variables in shared
790                                         # libraries through functions
791                                         &$make_variant("$2_it","$2_it",
792                                                       "EXPORT_VAR_AS_FUNCTION",
793                                                       "FUNCTION");
794                                         next;
795                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
796                                         # Variant for platforms that do not
797                                         # have to access globale variables
798                                         # in shared libraries through functions
799                                         $def .=
800                                             "#INFO:"
801                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
802                                                     .join(',',@current_algorithms).";";
803                                         $def .= "OPENSSL_EXTERN int $1_it;";
804                                         $def .=
805                                             "#INFO:"
806                                                 .join(',',@current_platforms).":"
807                                                     .join(',',@current_algorithms).";";
808                                         # Variant for platforms that have to
809                                         # access globale variables in shared
810                                         # libraries through functions
811                                         &$make_variant("$1_it","$1_it",
812                                                       "EXPORT_VAR_AS_FUNCTION",
813                                                       "FUNCTION");
814                                         next;
815                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
816                                         $def .= "int i2d_$1_NDEF(void);";
817                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
818                                         next;
819                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
820                                         $def .= "int $1_print_ctx(void);";
821                                         next;
822                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
823                                         $def .= "int $2_print_ctx(void);";
824                                         next;
825                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
826                                         next;
827                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
828                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
829                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
830                                         # Things not in Win16
831                                         $def .=
832                                             "#INFO:"
833                                                 .join(',',"!WIN16",@current_platforms).":"
834                                                     .join(',',@current_algorithms).";";
835                                         $def .= "int PEM_read_$1(void);";
836                                         $def .= "int PEM_write_$1(void);";
837                                         $def .=
838                                             "#INFO:"
839                                                 .join(',',@current_platforms).":"
840                                                     .join(',',@current_algorithms).";";
841                                         # Things that are everywhere
842                                         $def .= "int PEM_read_bio_$1(void);";
843                                         $def .= "int PEM_write_bio_$1(void);";
844                                         next;
845                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
846                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
847                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
848                                         # Things not in Win16
849                                         $def .=
850                                             "#INFO:"
851                                                 .join(',',"!WIN16",@current_platforms).":"
852                                                     .join(',',@current_algorithms).";";
853                                         $def .= "int PEM_write_$1(void);";
854                                         $def .=
855                                             "#INFO:"
856                                                 .join(',',@current_platforms).":"
857                                                     .join(',',@current_algorithms).";";
858                                         # Things that are everywhere
859                                         $def .= "int PEM_write_bio_$1(void);";
860                                         next;
861                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
862                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
863                                         # Things not in Win16
864                                         $def .=
865                                             "#INFO:"
866                                                 .join(',',"!WIN16",@current_platforms).":"
867                                                     .join(',',@current_algorithms).";";
868                                         $def .= "int PEM_read_$1(void);";
869                                         $def .=
870                                             "#INFO:"
871                                                 .join(',',@current_platforms).":"
872                                                     .join(',',@current_algorithms).";";
873                                         # Things that are everywhere
874                                         $def .= "int PEM_read_bio_$1(void);";
875                                         next;
876                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
877                                         # Variant for platforms that do not
878                                         # have to access globale variables
879                                         # in shared libraries through functions
880                                         $def .=
881                                             "#INFO:"
882                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
883                                                     .join(',',@current_algorithms).";";
884                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
885                                         $def .=
886                                             "#INFO:"
887                                                 .join(',',@current_platforms).":"
888                                                     .join(',',@current_algorithms).";";
889                                         # Variant for platforms that have to
890                                         # access globale variables in shared
891                                         # libraries through functions
892                                         &$make_variant("_shadow_$2","_shadow_$2",
893                                                       "EXPORT_VAR_AS_FUNCTION",
894                                                       "FUNCTION");
895                                 } elsif ($tag{'CONST_STRICT'} != 1) {
896                                         if (/\{|\/\*|\([^\)]*$/) {
897                                                 $line = $_;
898                                         } else {
899                                                 $def .= $_;
900                                         }
901                                 }
902                         }
903                 }
904                 close(IN);
905
906                 my $algs;
907                 my $plays;
908
909                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
910                 foreach (split /;/, $def) {
911                         my $s; my $k = "FUNCTION"; my $p; my $a;
912                         s/^[\n\s]*//g;
913                         s/[\n\s]*$//g;
914                         next if(/\#undef/);
915                         next if(/typedef\W/);
916                         next if(/\#define/);
917
918                         # Reduce argument lists to empty ()
919                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
920                         while(/\(.*\)/s) {
921                                 s/\([^\(\)]+\)/\{\}/gs;
922                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
923                         }
924                         # pretend as we didn't use curly braces: {} -> ()
925                         s/\{\}/\(\)/gs;
926
927                         s/STACK_OF\(\)/void/gs;
928                         s/LHASH_OF\(\)/void/gs;
929
930                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
931                         if (/^\#INFO:([^:]*):(.*)$/) {
932                                 $plats = $1;
933                                 $algs = $2;
934                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
935                                 next;
936                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
937                                 $s = $1;
938                                 $k = "VARIABLE";
939                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
940                         } elsif (/TYPEDEF_\w+_OF/s) {
941                                 next;
942                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
943                                 $s = $1;                # a function name!
944                                 print STDERR "DEBUG: found function $s\n" if $debug;
945                         } elsif (/\(/ and not (/=/)) {
946                                 print STDERR "File $file: cannot parse: $_;\n";
947                                 next;
948                         } else {
949                                 next;
950                         }
951
952                         $syms{$s} = 1;
953                         $kind{$s} = $k;
954
955                         $p = $plats;
956                         $a = $algs;
957                         $a .= ",BF" if($s =~ /EVP_bf/);
958                         $a .= ",CAST" if($s =~ /EVP_cast/);
959                         $a .= ",DES" if($s =~ /EVP_des/);
960                         $a .= ",DSA" if($s =~ /EVP_dss/);
961                         $a .= ",IDEA" if($s =~ /EVP_idea/);
962                         $a .= ",MD2" if($s =~ /EVP_md2/);
963                         $a .= ",MD4" if($s =~ /EVP_md4/);
964                         $a .= ",MD5" if($s =~ /EVP_md5/);
965                         $a .= ",RC2" if($s =~ /EVP_rc2/);
966                         $a .= ",RC4" if($s =~ /EVP_rc4/);
967                         $a .= ",RC5" if($s =~ /EVP_rc5/);
968                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
969                         $a .= ",SHA" if($s =~ /EVP_sha/);
970                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
971                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
972                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
973                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
974
975                         $platform{$s} =
976                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
977                         $algorithm{$s} .= ','.$a;
978
979                         if (defined($variant{$s})) {
980                                 foreach $v (split /;/,$variant{$s}) {
981                                         (my $r, my $p, my $k) = split(/:/,$v);
982                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
983                                         $syms{$r} = 1;
984                                         if (!defined($k)) { $k = $kind{$s}; }
985                                         $kind{$r} = $k."(".$s.")";
986                                         $algorithm{$r} = $algorithm{$s};
987                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
988                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
989                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
990                                 }
991                         }
992                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
993                 }
994         }
995
996         # Prune the returned symbols
997
998         delete $syms{"bn_dump1"};
999         $platform{"BIO_s_log"} .= ",!WIN32,!WIN16,!macintosh";
1000
1001         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
1002         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
1003         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
1004         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
1005         $platform{"EVP_sha384"} = "!VMSVAX";
1006         $platform{"EVP_sha512"} = "!VMSVAX";
1007         $platform{"SHA384_Init"} = "!VMSVAX";
1008         $platform{"SHA384_Transform"} = "!VMSVAX";
1009         $platform{"SHA384_Update"} = "!VMSVAX";
1010         $platform{"SHA384_Final"} = "!VMSVAX";
1011         $platform{"SHA384"} = "!VMSVAX";
1012         $platform{"SHA512_Init"} = "!VMSVAX";
1013         $platform{"SHA512_Transform"} = "!VMSVAX";
1014         $platform{"SHA512_Update"} = "!VMSVAX";
1015         $platform{"SHA512_Final"} = "!VMSVAX";
1016         $platform{"SHA512"} = "!VMSVAX";
1017
1018
1019         # Info we know about
1020
1021         push @ret, map { $_."\\".&info_string($_,"EXIST",
1022                                               $platform{$_},
1023                                               $kind{$_},
1024                                               $algorithm{$_}) } keys %syms;
1025
1026         if (keys %unknown_algorithms) {
1027                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1028                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1029         }
1030         return(@ret);
1031 }
1032
1033 # Param: string of comma-separated platform-specs.
1034 sub reduce_platforms
1035 {
1036         my ($platforms) = @_;
1037         my $pl = defined($platforms) ? $platforms : "";
1038         my %p = map { $_ => 0 } split /,/, $pl;
1039         my $ret;
1040
1041         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1042             if $debug;
1043         # We do this, because if there's code like the following, it really
1044         # means the function exists in all cases and should therefore be
1045         # everywhere.  By increasing and decreasing, we may attain 0:
1046         #
1047         # ifndef WIN16
1048         #    int foo();
1049         # else
1050         #    int _fat foo();
1051         # endif
1052         foreach $platform (split /,/, $pl) {
1053                 if ($platform =~ /^!(.*)$/) {
1054                         $p{$1}--;
1055                 } else {
1056                         $p{$platform}++;
1057                 }
1058         }
1059         foreach $platform (keys %p) {
1060                 if ($p{$platform} == 0) { delete $p{$platform}; }
1061         }
1062
1063         delete $p{""};
1064
1065         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1066         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1067             if $debug;
1068         return $ret;
1069 }
1070
1071 sub info_string {
1072         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1073
1074         my %a = defined($algorithms) ?
1075             map { $_ => 1 } split /,/, $algorithms : ();
1076         my $k = defined($kind) ? $kind : "FUNCTION";
1077         my $ret;
1078         my $p = &reduce_platforms($platforms);
1079
1080         delete $a{""};
1081
1082         $ret = $exist;
1083         $ret .= ":".$p;
1084         $ret .= ":".$k;
1085         $ret .= ":".join(',',sort keys %a);
1086         return $ret;
1087 }
1088
1089 sub maybe_add_info {
1090         (my $name, *nums, my @symbols) = @_;
1091         my $sym;
1092         my $new_info = 0;
1093         my %syms=();
1094
1095         print STDERR "Updating $name info\n";
1096         foreach $sym (@symbols) {
1097                 (my $s, my $i) = split /\\/, $sym;
1098                 if (defined($nums{$s})) {
1099                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1100                         (my $n, my $dummy) = split /\\/, $nums{$s};
1101                         if (!defined($dummy) || $i ne $dummy) {
1102                                 $nums{$s} = $n."\\".$i;
1103                                 $new_info++;
1104                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1105                         }
1106                 }
1107                 $syms{$s} = 1;
1108         }
1109
1110         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1111         foreach $sym (@s) {
1112                 (my $n, my $i) = split /\\/, $nums{$sym};
1113                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1114                         $new_info++;
1115                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1116                 }
1117         }
1118         if ($new_info) {
1119                 print STDERR "$new_info old symbols got an info update\n";
1120                 if (!$do_rewrite) {
1121                         print STDERR "You should do a rewrite to fix this.\n";
1122                 }
1123         } else {
1124                 print STDERR "No old symbols needed info update\n";
1125         }
1126 }
1127
1128 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1129 sub is_valid
1130 {
1131         my ($keywords_txt,$platforms) = @_;
1132         my (@keywords) = split /,/,$keywords_txt;
1133         my ($falsesum, $truesum) = (0, 1);
1134
1135         # Param: one keyword
1136         sub recognise
1137         {
1138                 my ($keyword,$platforms) = @_;
1139
1140                 if ($platforms) {
1141                         # platforms
1142                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1143                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1144                         if ($keyword eq "VMS" && $VMS) { return 1; }
1145                         if ($keyword eq "WIN32" && $W32) { return 1; }
1146                         if ($keyword eq "WIN16" && $W16) { return 1; }
1147                         if ($keyword eq "WINNT" && $NT) { return 1; }
1148                         if ($keyword eq "OS2" && $OS2) { return 1; }
1149                         # Special platforms:
1150                         # EXPORT_VAR_AS_FUNCTION means that global variables
1151                         # will be represented as functions.  This currently
1152                         # only happens on VMS-VAX.
1153                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32 || $W16)) {
1154                                 return 1;
1155                         }
1156                         if ($keyword eq "OPENSSL_FIPSCAPABLE") {
1157                                 return 0;
1158                         }
1159                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1160                                 return 1;
1161                         }
1162                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1163                         return 0;
1164                 } else {
1165                         # algorithms
1166                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1167                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1168                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1169                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1170                         if ($keyword eq "DES" && $no_des) { return 0; }
1171                         if ($keyword eq "BF" && $no_bf) { return 0; }
1172                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1173                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1174                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1175                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1176                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1177                         if ($keyword eq "RIPEMD" && $no_ripemd) { return 0; }
1178                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1179                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1180                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1181                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1182                         if ($keyword eq "DH" && $no_dh) { return 0; }
1183                         if ($keyword eq "EC" && $no_ec) { return 0; }
1184                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1185                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1186                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1187                         if ($keyword eq "AES" && $no_aes) { return 0; }
1188                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1189                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1190                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1191                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1192                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1193                         if ($keyword eq "ERR" && $no_err) { return 0; }
1194                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1195                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1196                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1197                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1198                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1199                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1200                         if ($keyword eq "HW" && $no_hw) { return 0; }
1201                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1202                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1203                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1204                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1205                         if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }
1206                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1207                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1208                         if ($keyword eq "EC_NISTP_64_GCC_128" && $no_nistp_gcc)
1209                                         { return 0; }
1210                         if ($keyword eq "EC2M" && $no_ec2m) { return 0; }
1211                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1212                         if ($keyword eq "SSL2" && $no_ssl2) { return 0; }
1213                         if ($keyword eq "SSL_TRACE" && $no_ssl_trace) { return 0; }
1214                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1215                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1216                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1217                         if ($keyword eq "SCTP" && $no_sctp) { return 0; }
1218                         if ($keyword eq "SRTP" && $no_srtp) { return 0; }
1219                         if ($keyword eq "UNIT_TEST" && $no_unit_test) { return 0; }
1220                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1221
1222                         # Nothing recognise as true
1223                         return 1;
1224                 }
1225         }
1226
1227         foreach $k (@keywords) {
1228                 if ($k =~ /^!(.*)$/) {
1229                         $falsesum += &recognise($1,$platforms);
1230                 } else {
1231                         $truesum *= &recognise($k,$platforms);
1232                 }
1233         }
1234         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1235         return (!$falsesum) && $truesum;
1236 }
1237
1238 sub print_test_file
1239 {
1240         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1241         my $n = 1; my @e; my @r;
1242         my $sym; my $prev = ""; my $prefSSLeay;
1243
1244         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1245         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1246         @symbols=((sort @e),(sort @r));
1247
1248         foreach $sym (@symbols) {
1249                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1250                 my $v = 0;
1251                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1252                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1253                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1254                 if (!defined($nums{$s})) {
1255                         print STDERR "Warning: $s does not have a number assigned\n"
1256                             if(!$do_update);
1257                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1258                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1259                         if ($prev eq $s2) {
1260                                 print OUT "\t/* The following has already appeared previously */\n";
1261                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1262                         }
1263                         $prev = $s2;    # To warn about duplicates...
1264
1265                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1266                         if ($v) {
1267                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1268                         } else {
1269                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1270                         }
1271                 }
1272         }
1273 }
1274
1275 sub get_version {
1276    local *MF;
1277    my $v = '?';
1278    open MF, 'Makefile' or return $v;
1279    while (<MF>) {
1280      $v = $1, last if /^VERSION=(.*?)\s*$/;
1281    }
1282    close MF;
1283    return $v;
1284 }
1285
1286 sub print_def_file
1287 {
1288         (*OUT,my $name,*nums,my @symbols)=@_;
1289         my $n = 1; my @e; my @r; my @v; my $prev="";
1290         my $liboptions="";
1291         my $libname = $name;
1292         my $http_vendor = 'www.openssl.org/';
1293         my $version = get_version();
1294         my $what = "OpenSSL: implementation of Secure Socket Layer";
1295         my $description = "$what $version, $name - http://$http_vendor";
1296
1297         if ($W32)
1298                 { $libname.="32"; }
1299         elsif ($W16)
1300                 { $libname.="16"; }
1301         elsif ($OS2)
1302                 { # DLL names should not clash on the whole system.
1303                   # However, they should not have any particular relationship
1304                   # to the name of the static library.  Chose descriptive names
1305                   # (must be at most 8 chars).
1306                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1307                   $libname = $translate{$name} || $name;
1308                   $liboptions = <<EOO;
1309 INITINSTANCE
1310 DATA MULTIPLE NONSHARED
1311 EOO
1312                   # Vendor field can't contain colon, drat; so we omit http://
1313                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1314                 }
1315
1316         print OUT <<"EOF";
1317 ;
1318 ; Definition file for the DLL version of the $name library from OpenSSL
1319 ;
1320
1321 LIBRARY         $libname        $liboptions
1322
1323 EOF
1324
1325         if ($W16) {
1326                 print <<"EOF";
1327 CODE            PRELOAD MOVEABLE
1328 DATA            PRELOAD MOVEABLE SINGLE
1329
1330 EXETYPE         WINDOWS
1331
1332 HEAPSIZE        4096
1333 STACKSIZE       8192
1334
1335 EOF
1336         }
1337
1338         print "EXPORTS\n";
1339
1340         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1341         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1342         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1343         @symbols=((sort @e),(sort @r), (sort @v));
1344
1345
1346         foreach $sym (@symbols) {
1347                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1348                 my $v = 0;
1349                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1350                 if (!defined($nums{$s})) {
1351                         printf STDERR "Warning: $s does not have a number assigned\n"
1352                             if(!$do_update);
1353                 } else {
1354                         (my $n, my $dummy) = split /\\/, $nums{$s};
1355                         my %pf = ();
1356                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1357                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1358                         if (is_valid($p,1) && is_valid($a,0)) {
1359                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1360                                 if ($prev eq $s2) {
1361                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1362                                 }
1363                                 $prev = $s2;    # To warn about duplicates...
1364                                 if($v && !$OS2) {
1365                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1366                                 } else {
1367                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1368                                 }
1369                         }
1370                 }
1371         }
1372         printf OUT "\n";
1373 }
1374
1375 sub load_numbers
1376 {
1377         my($name)=@_;
1378         my(@a,%ret);
1379
1380         $max_num = 0;
1381         $num_noinfo = 0;
1382         $prev = "";
1383         $prev_cnt = 0;
1384
1385         open(IN,"<$name") || die "unable to open $name:$!\n";
1386         while (<IN>) {
1387                 chop;
1388                 s/#.*$//;
1389                 next if /^\s*$/;
1390                 @a=split;
1391                 if (defined $ret{$a[0]}) {
1392                         # This is actually perfectly OK
1393                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1394                 }
1395                 if ($max_num > $a[1]) {
1396                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1397                 }
1398                 elsif ($max_num == $a[1]) {
1399                         # This is actually perfectly OK
1400                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1401                         if ($a[0] eq $prev) {
1402                                 $prev_cnt++;
1403                                 $a[0] .= "{$prev_cnt}";
1404                         }
1405                 }
1406                 else {
1407                         $prev_cnt = 0;
1408                 }
1409                 if ($#a < 2) {
1410                         # Existence will be proven later, in do_defs
1411                         $ret{$a[0]}=$a[1];
1412                         $num_noinfo++;
1413                 } else {
1414                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1415                 }
1416                 $max_num = $a[1] if $a[1] > $max_num;
1417                 $prev=$a[0];
1418         }
1419         if ($num_noinfo) {
1420                 print STDERR "Warning: $num_noinfo symbols were without info.";
1421                 if ($do_rewrite) {
1422                         printf STDERR "  The rewrite will fix this.\n";
1423                 } else {
1424                         printf STDERR "  You should do a rewrite to fix this.\n";
1425                 }
1426         }
1427         close(IN);
1428         return(%ret);
1429 }
1430
1431 sub parse_number
1432 {
1433         (my $str, my $what) = @_;
1434         (my $n, my $i) = split(/\\/,$str);
1435         if ($what eq "n") {
1436                 return $n;
1437         } else {
1438                 return $i;
1439         }
1440 }
1441
1442 sub rewrite_numbers
1443 {
1444         (*OUT,$name,*nums,@symbols)=@_;
1445         my $thing;
1446
1447         print STDERR "Rewriting $name\n";
1448
1449         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1450         my $r; my %r; my %rsyms;
1451         foreach $r (@r) {
1452                 (my $s, my $i) = split /\\/, $r;
1453                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1454                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1455                 $r{$a} = $s."\\".$i;
1456                 $rsyms{$s} = 1;
1457         }
1458
1459         my %syms = ();
1460         foreach $_ (@symbols) {
1461                 (my $n, my $i) = split /\\/;
1462                 $syms{$n} = 1;
1463         }
1464
1465         my @s=sort {
1466             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1467             || $a cmp $b
1468         } keys %nums;
1469         foreach $sym (@s) {
1470                 (my $n, my $i) = split /\\/, $nums{$sym};
1471                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1472                 next if defined($rsyms{$sym});
1473                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1474                 $i="NOEXIST::FUNCTION:"
1475                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1476                 my $s2 = $sym;
1477                 $s2 =~ s/\{[0-9]+\}$//;
1478                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1479                 if (exists $r{$sym}) {
1480                         (my $s, $i) = split /\\/,$r{$sym};
1481                         my $s2 = $s;
1482                         $s2 =~ s/\{[0-9]+\}$//;
1483                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1484                 }
1485         }
1486 }
1487
1488 sub update_numbers
1489 {
1490         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1491         my $new_syms = 0;
1492
1493         print STDERR "Updating $name numbers\n";
1494
1495         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1496         my $r; my %r; my %rsyms;
1497         foreach $r (@r) {
1498                 (my $s, my $i) = split /\\/, $r;
1499                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1500                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1501                 $r{$a} = $s."\\".$i;
1502                 $rsyms{$s} = 1;
1503         }
1504
1505         foreach $sym (@symbols) {
1506                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1507                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1508                 next if defined($rsyms{$sym});
1509                 die "ERROR: Symbol $sym had no info attached to it."
1510                     if $i eq "";
1511                 next if $i =~ /OPENSSL_FIPSCAPABLE/;
1512                 if (!exists $nums{$s}) {
1513                         $new_syms++;
1514                         my $s2 = $s;
1515                         $s2 =~ s/\{[0-9]+\}$//;
1516                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1517                         if (exists $r{$s}) {
1518                                 ($s, $i) = split /\\/,$r{$s};
1519                                 $s =~ s/\{[0-9]+\}$//;
1520                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1521                         }
1522                 }
1523         }
1524         if($new_syms) {
1525                 print STDERR "$new_syms New symbols added\n";
1526         } else {
1527                 print STDERR "No New symbols Added\n";
1528         }
1529 }
1530
1531 sub check_existing
1532 {
1533         (*nums, my @symbols)=@_;
1534         my %existing; my @remaining;
1535         @remaining=();
1536         foreach $sym (@symbols) {
1537                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1538                 $existing{$s}=1;
1539         }
1540         foreach $sym (keys %nums) {
1541                 if (!exists $existing{$sym}) {
1542                         push @remaining, $sym;
1543                 }
1544         }
1545         if(@remaining) {
1546                 print STDERR "The following symbols do not seem to exist:\n";
1547                 foreach $sym (@remaining) {
1548                         print STDERR "\t",$sym,"\n";
1549                 }
1550         }
1551 }
1552