460d56523ab4af2fac29b7127bb184e6f388228a
[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                          # SSL v3 method
112                          "SSL3_METHOD",
113                          # JPAKE
114                          "JPAKE",
115                          # NEXTPROTONEG
116                          "NEXTPROTONEG",
117                          # Deprecated functions
118                          "DEPRECATED",
119                          # Hide SSL internals
120                          "SSL_INTERN",
121                          # SCTP
122                          "SCTP",
123                          # SRTP
124                          "SRTP",
125                          # SSL TRACE
126                          "SSL_TRACE",
127                          # Unit testing
128                          "UNIT_TEST");
129
130 my $options="";
131 open(IN,"<Makefile") || die "unable to open Makefile!\n";
132 while(<IN>) {
133     $options=$1 if (/^OPTIONS=(.*)$/);
134 }
135 close(IN);
136
137 # The following ciphers may be excluded (by Configure). This means functions
138 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
139 # in directory xxx is ignored.
140 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
141 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
142 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
143 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
144 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
145 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
146 my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
147 my $no_jpake; my $no_srp; my $no_ssl2; my $no_ec2m; my $no_nistp_gcc; 
148 my $no_nextprotoneg; my $no_sctp; my $no_srtp; my $no_ssl_trace;
149 my $no_unit_test; my $no_ssl3_method;
150
151 my $fips;
152
153 my $zlib;
154
155
156 foreach (@ARGV, split(/ /, $options))
157         {
158         $debug=1 if $_ eq "debug";
159         $W32=1 if $_ eq "32";
160         $W16=1 if $_ eq "16";
161         if($_ eq "NT") {
162                 $W32 = 1;
163                 $NT = 1;
164         }
165         if ($_ eq "VMS-VAX") {
166                 $VMS=1;
167                 $VMSVAX=1;
168         }
169         if ($_ eq "VMS-NonVAX") {
170                 $VMS=1;
171                 $VMSNonVAX=1;
172         }
173         $VMS=1 if $_ eq "VMS";
174         $OS2=1 if $_ eq "OS2";
175         $fips=1 if /^fips/;
176         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
177                          || $_ eq "enable-zlib-dynamic") {
178                 $zlib = 1;
179         }
180
181         $do_ssl=1 if $_ eq "ssleay";
182         if ($_ eq "ssl") {
183                 $do_ssl=1; 
184                 $libname=$_
185         }
186         $do_crypto=1 if $_ eq "libeay";
187         if ($_ eq "crypto") {
188                 $do_crypto=1;
189                 $libname=$_;
190         }
191         $no_static_engine=1 if $_ eq "no-static-engine";
192         $no_static_engine=0 if $_ eq "enable-static-engine";
193         $do_update=1 if $_ eq "update";
194         $do_rewrite=1 if $_ eq "rewrite";
195         $do_ctest=1 if $_ eq "ctest";
196         $do_ctestall=1 if $_ eq "ctestall";
197         $do_checkexist=1 if $_ eq "exist";
198         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
199
200         if    (/^no-rc2$/)      { $no_rc2=1; }
201         elsif (/^no-rc4$/)      { $no_rc4=1; }
202         elsif (/^no-rc5$/)      { $no_rc5=1; }
203         elsif (/^no-idea$/)     { $no_idea=1; }
204         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
205         elsif (/^no-bf$/)       { $no_bf=1; }
206         elsif (/^no-cast$/)     { $no_cast=1; }
207         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
208         elsif (/^no-md2$/)      { $no_md2=1; }
209         elsif (/^no-md4$/)      { $no_md4=1; }
210         elsif (/^no-md5$/)      { $no_md5=1; }
211         elsif (/^no-sha$/)      { $no_sha=1; }
212         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
213         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
214         elsif (/^no-rsa$/)      { $no_rsa=1; }
215         elsif (/^no-dsa$/)      { $no_dsa=1; }
216         elsif (/^no-dh$/)       { $no_dh=1; }
217         elsif (/^no-ec$/)       { $no_ec=1; }
218         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
219         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
220         elsif (/^no-hmac$/)     { $no_hmac=1; }
221         elsif (/^no-aes$/)      { $no_aes=1; }
222         elsif (/^no-camellia$/) { $no_camellia=1; }
223         elsif (/^no-seed$/)     { $no_seed=1; }
224         elsif (/^no-evp$/)      { $no_evp=1; }
225         elsif (/^no-lhash$/)    { $no_lhash=1; }
226         elsif (/^no-stack$/)    { $no_stack=1; }
227         elsif (/^no-err$/)      { $no_err=1; }
228         elsif (/^no-buffer$/)   { $no_buffer=1; }
229         elsif (/^no-bio$/)      { $no_bio=1; }
230         #elsif (/^no-locking$/) { $no_locking=1; }
231         elsif (/^no-comp$/)     { $no_comp=1; }
232         elsif (/^no-dso$/)      { $no_dso=1; }
233         elsif (/^no-krb5$/)     { $no_krb5=1; }
234         elsif (/^no-engine$/)   { $no_engine=1; }
235         elsif (/^no-hw$/)       { $no_hw=1; }
236         elsif (/^no-gmp$/)      { $no_gmp=1; }
237         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
238         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
239         elsif (/^no-cms$/)      { $no_cms=1; }
240         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
241         elsif (/^no-ec-nistp224-64-gcc-128$/)   { $no_nistp_gcc=1; }
242         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
243         elsif (/^no-ssl2$/)     { $no_ssl2=1; }
244         elsif (/^no-ssl3-method$/) { $no_ssl3_method=1; }
245         elsif (/^no-ssl-trace$/) { $no_ssl_trace=1; }
246         elsif (/^no-capieng$/)  { $no_capieng=1; }
247         elsif (/^no-jpake$/)    { $no_jpake=1; }
248         elsif (/^no-srp$/)      { $no_srp=1; }
249         elsif (/^no-sctp$/)     { $no_sctp=1; }
250         elsif (/^no-srtp$/)     { $no_srtp=1; }
251         elsif (/^no-unit-test$/){ $no_unit_test=1; }
252         }
253
254
255 if (!$libname) { 
256         if ($do_ssl) {
257                 $libname="SSLEAY";
258         }
259         if ($do_crypto) {
260                 $libname="LIBEAY";
261         }
262 }
263
264 # If no platform is given, assume WIN32
265 if ($W32 + $W16 + $VMS + $OS2 == 0) {
266         $W32 = 1;
267 }
268
269 # Add extra knowledge
270 if ($W16) {
271         $no_fp_api=1;
272 }
273
274 if (!$do_ssl && !$do_crypto)
275         {
276         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
277         exit(1);
278         }
279
280 %ssl_list=&load_numbers($ssl_num);
281 $max_ssl = $max_num;
282 %crypto_list=&load_numbers($crypto_num);
283 $max_crypto = $max_num;
284
285 my $ssl="ssl/ssl.h";
286 $ssl.=" ssl/kssl.h";
287 $ssl.=" ssl/tls1.h";
288 $ssl.=" ssl/srtp.h";
289
290 my $crypto ="crypto/crypto.h";
291 $crypto.=" crypto/cryptlib.h";
292 $crypto.=" crypto/o_dir.h";
293 $crypto.=" crypto/o_str.h";
294 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
295 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
296 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
297 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
298 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
299 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
300 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
301 $crypto.=" crypto/whrlpool/whrlpool.h" ;
302 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
303 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
304 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
305 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
306 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
307 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
308 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
309 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
310 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
311
312 $crypto.=" crypto/bn/bn.h";
313 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
314 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
315 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
316 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
317 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
318 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
319 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
320 $crypto.=" crypto/cmac/cmac.h" ;
321
322 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
323 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
324 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
325 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
326 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
327 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
328 $crypto.=" crypto/conf/conf.h";
329 $crypto.=" crypto/txt_db/txt_db.h";
330
331 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
332 $crypto.=" crypto/objects/objects.h";
333 $crypto.=" crypto/pem/pem.h";
334 #$crypto.=" crypto/meth/meth.h";
335 $crypto.=" crypto/asn1/asn1.h";
336 $crypto.=" crypto/asn1/asn1t.h";
337 $crypto.=" crypto/asn1/asn1_mac.h";
338 $crypto.=" crypto/err/err.h" ; # unless $no_err;
339 $crypto.=" crypto/pkcs7/pkcs7.h";
340 $crypto.=" crypto/pkcs12/pkcs12.h";
341 $crypto.=" crypto/x509/x509.h";
342 $crypto.=" crypto/x509/x509_vfy.h";
343 $crypto.=" crypto/x509v3/x509v3.h";
344 $crypto.=" crypto/ts/ts.h";
345 $crypto.=" crypto/rand/rand.h";
346 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
347 $crypto.=" crypto/ocsp/ocsp.h";
348 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
349 $crypto.=" crypto/krb5/krb5_asn.h";
350 #$crypto.=" crypto/store/store.h";
351 $crypto.=" crypto/pqueue/pqueue.h";
352 $crypto.=" crypto/cms/cms.h";
353 $crypto.=" crypto/jpake/jpake.h";
354 $crypto.=" crypto/srp/srp.h";
355 $crypto.=" crypto/modes/modes.h";
356 #$crypto.=" fips/fips.h fips/rand/fips_rand.h";
357
358 my $symhacks="crypto/symhacks.h";
359
360 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
361 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
362
363 if ($do_update) {
364
365 if ($do_ssl == 1) {
366
367         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
368         if ($do_rewrite == 1) {
369                 open(OUT, ">$ssl_num");
370                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
371         } else {
372                 open(OUT, ">>$ssl_num");
373         }
374         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
375         close OUT;
376 }
377
378 if($do_crypto == 1) {
379
380         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
381         if ($do_rewrite == 1) {
382                 open(OUT, ">$crypto_num");
383                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
384         } else {
385                 open(OUT, ">>$crypto_num");
386         }
387         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
388         close OUT;
389
390
391 } elsif ($do_checkexist) {
392         &check_existing(*ssl_list, @ssl_symbols)
393                 if $do_ssl == 1;
394         &check_existing(*crypto_list, @crypto_symbols)
395                 if $do_crypto == 1;
396 } elsif ($do_ctest || $do_ctestall) {
397
398         print <<"EOF";
399
400 /* Test file to check all DEF file symbols are present by trying
401  * to link to all of them. This is *not* intended to be run!
402  */
403
404 int main()
405 {
406 EOF
407         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
408                 if $do_ssl == 1;
409
410         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
411                 if $do_crypto == 1;
412
413         print "}\n";
414
415 } else {
416
417         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
418                 if $do_ssl == 1;
419
420         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
421                 if $do_crypto == 1;
422
423 }
424
425
426 sub do_defs
427 {
428         my($name,$files,$symhacksfile)=@_;
429         my $file;
430         my @ret;
431         my %syms;
432         my %platform;           # For anything undefined, we assume ""
433         my %kind;               # For anything undefined, we assume "FUNCTION"
434         my %algorithm;          # For anything undefined, we assume ""
435         my %variant;
436         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
437                                 # is the same name as the original.
438         my $cpp;
439         my %unknown_algorithms = ();
440
441         foreach $file (split(/\s+/,$symhacksfile." ".$files))
442                 {
443                 print STDERR "DEBUG: starting on $file:\n" if $debug;
444                 open(IN,"<$file") || die "unable to open $file:$!\n";
445                 my $line = "", my $def= "";
446                 my %tag = (
447                         (map { $_ => 0 } @known_platforms),
448                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
449                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
450                         NOPROTO         => 0,
451                         PERL5           => 0,
452                         _WINDLL         => 0,
453                         CONST_STRICT    => 0,
454                         TRUE            => 1,
455                 );
456                 my $symhacking = $file eq $symhacksfile;
457                 my @current_platforms = ();
458                 my @current_algorithms = ();
459
460                 # params: symbol, alias, platforms, kind
461                 # The reason to put this subroutine in a variable is that
462                 # it will otherwise create it's own, unshared, version of
463                 # %tag and %variant...
464                 my $make_variant = sub
465                 {
466                         my ($s, $a, $p, $k) = @_;
467                         my ($a1, $a2);
468
469                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
470                         if (defined($p))
471                         {
472                                 $a1 = join(",",$p,
473                                            grep(!/^$/,
474                                                 map { $tag{$_} == 1 ? $_ : "" }
475                                                 @known_platforms));
476                         }
477                         else
478                         {
479                                 $a1 = join(",",
480                                            grep(!/^$/,
481                                                 map { $tag{$_} == 1 ? $_ : "" }
482                                                 @known_platforms));
483                         }
484                         $a2 = join(",",
485                                    grep(!/^$/,
486                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
487                                         @known_ossl_platforms));
488                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
489                         if ($a1 eq "") { $a1 = $a2; }
490                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
491                         if ($a eq $s)
492                         {
493                                 if (!defined($variant_cnt{$s}))
494                                 {
495                                         $variant_cnt{$s} = 0;
496                                 }
497                                 $variant_cnt{$s}++;
498                                 $a .= "{$variant_cnt{$s}}";
499                         }
500                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
501                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
502                         if (!grep(/^$togrep$/,
503                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
504                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
505                                 $variant{$s} .= $toadd;
506                         }
507                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
508                 };
509
510                 print STDERR "DEBUG: parsing ----------\n" if $debug;
511                 while(<IN>) {
512                         if (/\/\* Error codes for the \w+ functions\. \*\//)
513                                 {
514                                 undef @tag;
515                                 last;
516                                 }
517                         if ($line ne '') {
518                                 $_ = $line . $_;
519                                 $line = '';
520                         }
521
522                         if (/\\$/) {
523                                 chomp; # remove eol
524                                 chop; # remove ending backslash
525                                 $line = $_;
526                                 next;
527                         }
528
529                         if(/\/\*/) {
530                                 if (not /\*\//) {       # multiline comment...
531                                         $line = $_;     # ... just accumulate
532                                         next;
533                                 } else {
534                                         s/\/\*.*?\*\///gs;# wipe it
535                                 }
536                         }
537
538                         if ($cpp) {
539                                 $cpp++ if /^#\s*if/;
540                                 $cpp-- if /^#\s*endif/;
541                                 next;
542                         }
543                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
544
545                         s/{[^{}]*}//gs;                      # ignore {} blocks
546                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
547                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
548                         if (/^\#\s*ifndef\s+(.*)/) {
549                                 push(@tag,"-");
550                                 push(@tag,$1);
551                                 $tag{$1}=-1;
552                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
553                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
554                                 push(@tag,"-");
555                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
556                                         my $tmp_1 = $1;
557                                         my $tmp_;
558                                         foreach $tmp_ (split '\&\&',$tmp_1) {
559                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
560                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
561                                                 push(@tag,$1);
562                                                 $tag{$1}=-1;
563                                         }
564                                 } else {
565                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
566                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
567                                         push(@tag,$1);
568                                         $tag{$1}=-1;
569                                 }
570                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
571                                 push(@tag,"-");
572                                 push(@tag,$1);
573                                 $tag{$1}=1;
574                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
575                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
576                                 push(@tag,"-");
577                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
578                                         my $tmp_1 = $1;
579                                         my $tmp_;
580                                         foreach $tmp_ (split '\|\|',$tmp_1) {
581                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
582                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
583                                                 push(@tag,$1);
584                                                 $tag{$1}=1;
585                                         }
586                                 } else {
587                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
588                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
589                                         push(@tag,$1);
590                                         $tag{$1}=1;
591                                 }
592                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
593                                 my $tag_i = $#tag;
594                                 while($tag[$tag_i] ne "-") {
595                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
596                                                 $tag{$tag[$tag_i]}=2;
597                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
598                                         }
599                                         $tag_i--;
600                                 }
601                         } elsif (/^\#\s*endif/) {
602                                 my $tag_i = $#tag;
603                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
604                                         my $t=$tag[$tag_i];
605                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
606                                         if ($tag{$t}==2) {
607                                                 $tag{$t}=-1;
608                                         } else {
609                                                 $tag{$t}=0;
610                                         }
611                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
612                                         pop(@tag);
613                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
614                                                 $t=$1;
615                                         } else {
616                                                 $t="";
617                                         }
618                                         if ($t ne ""
619                                             && !grep(/^$t$/, @known_algorithms)) {
620                                                 $unknown_algorithms{$t} = 1;
621                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
622                                         }
623                                         $tag_i--;
624                                 }
625                                 pop(@tag);
626                         } elsif (/^\#\s*else/) {
627                                 my $tag_i = $#tag;
628                                 while($tag[$tag_i] ne "-") {
629                                         my $t=$tag[$tag_i];
630                                         $tag{$t}= -$tag{$t};
631                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
632                                         $tag_i--;
633                                 }
634                         } elsif (/^\#\s*if\s+1/) {
635                                 push(@tag,"-");
636                                 # Dummy tag
637                                 push(@tag,"TRUE");
638                                 $tag{"TRUE"}=1;
639                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
640                         } elsif (/^\#\s*if\s+0/) {
641                                 push(@tag,"-");
642                                 # Dummy tag
643                                 push(@tag,"TRUE");
644                                 $tag{"TRUE"}=-1;
645                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
646                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
647                                  && $symhacking && $tag{'TRUE'} != -1) {
648                                 # This is for aliasing.  When we find an alias,
649                                 # we have to invert
650                                 &$make_variant($1,$2);
651                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
652                         }
653                         if (/^\#/) {
654                                 @current_platforms =
655                                     grep(!/^$/,
656                                          map { $tag{$_} == 1 ? $_ :
657                                                    $tag{$_} == -1 ? "!".$_  : "" }
658                                          @known_platforms);
659                                 push @current_platforms
660                                     , grep(!/^$/,
661                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
662                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
663                                            @known_ossl_platforms);
664                                 @current_algorithms =
665                                     grep(!/^$/,
666                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
667                                          @known_algorithms);
668                                 $def .=
669                                     "#INFO:"
670                                         .join(',',@current_platforms).":"
671                                             .join(',',@current_algorithms).";";
672                                 next;
673                         }
674                         if ($tag{'TRUE'} != -1) {
675                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
676                                         next;
677                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
678                                         $def .= "int d2i_$3(void);";
679                                         $def .= "int i2d_$3(void);";
680                                         # Variant for platforms that do not
681                                         # have to access globale variables
682                                         # in shared libraries through functions
683                                         $def .=
684                                             "#INFO:"
685                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
686                                                     .join(',',@current_algorithms).";";
687                                         $def .= "OPENSSL_EXTERN int $2_it;";
688                                         $def .=
689                                             "#INFO:"
690                                                 .join(',',@current_platforms).":"
691                                                     .join(',',@current_algorithms).";";
692                                         # Variant for platforms that have to
693                                         # access globale variables in shared
694                                         # libraries through functions
695                                         &$make_variant("$2_it","$2_it",
696                                                       "EXPORT_VAR_AS_FUNCTION",
697                                                       "FUNCTION");
698                                         next;
699                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
700                                         $def .= "int d2i_$3(void);";
701                                         $def .= "int i2d_$3(void);";
702                                         $def .= "int $3_free(void);";
703                                         $def .= "int $3_new(void);";
704                                         # Variant for platforms that do not
705                                         # have to access globale variables
706                                         # in shared libraries through functions
707                                         $def .=
708                                             "#INFO:"
709                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
710                                                     .join(',',@current_algorithms).";";
711                                         $def .= "OPENSSL_EXTERN int $2_it;";
712                                         $def .=
713                                             "#INFO:"
714                                                 .join(',',@current_platforms).":"
715                                                     .join(',',@current_algorithms).";";
716                                         # Variant for platforms that have to
717                                         # access globale variables in shared
718                                         # libraries through functions
719                                         &$make_variant("$2_it","$2_it",
720                                                       "EXPORT_VAR_AS_FUNCTION",
721                                                       "FUNCTION");
722                                         next;
723                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
724                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
725                                         $def .= "int d2i_$1(void);";
726                                         $def .= "int i2d_$1(void);";
727                                         $def .= "int $1_free(void);";
728                                         $def .= "int $1_new(void);";
729                                         # Variant for platforms that do not
730                                         # have to access globale variables
731                                         # in shared libraries through functions
732                                         $def .=
733                                             "#INFO:"
734                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
735                                                     .join(',',@current_algorithms).";";
736                                         $def .= "OPENSSL_EXTERN int $1_it;";
737                                         $def .=
738                                             "#INFO:"
739                                                 .join(',',@current_platforms).":"
740                                                     .join(',',@current_algorithms).";";
741                                         # Variant for platforms that have to
742                                         # access globale variables in shared
743                                         # libraries through functions
744                                         &$make_variant("$1_it","$1_it",
745                                                       "EXPORT_VAR_AS_FUNCTION",
746                                                       "FUNCTION");
747                                         next;
748                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
749                                         $def .= "int d2i_$2(void);";
750                                         $def .= "int i2d_$2(void);";
751                                         # Variant for platforms that do not
752                                         # have to access globale variables
753                                         # in shared libraries through functions
754                                         $def .=
755                                             "#INFO:"
756                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
757                                                     .join(',',@current_algorithms).";";
758                                         $def .= "OPENSSL_EXTERN int $2_it;";
759                                         $def .=
760                                             "#INFO:"
761                                                 .join(',',@current_platforms).":"
762                                                     .join(',',@current_algorithms).";";
763                                         # Variant for platforms that have to
764                                         # access globale variables in shared
765                                         # libraries through functions
766                                         &$make_variant("$2_it","$2_it",
767                                                       "EXPORT_VAR_AS_FUNCTION",
768                                                       "FUNCTION");
769                                         next;
770                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
771                                         $def .= "int $1_free(void);";
772                                         $def .= "int $1_new(void);";
773                                         next;
774                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
775                                         $def .= "int d2i_$2(void);";
776                                         $def .= "int i2d_$2(void);";
777                                         $def .= "int $2_free(void);";
778                                         $def .= "int $2_new(void);";
779                                         # Variant for platforms that do not
780                                         # have to access globale variables
781                                         # in shared libraries through functions
782                                         $def .=
783                                             "#INFO:"
784                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
785                                                     .join(',',@current_algorithms).";";
786                                         $def .= "OPENSSL_EXTERN int $2_it;";
787                                         $def .=
788                                             "#INFO:"
789                                                 .join(',',@current_platforms).":"
790                                                     .join(',',@current_algorithms).";";
791                                         # Variant for platforms that have to
792                                         # access globale variables in shared
793                                         # libraries through functions
794                                         &$make_variant("$2_it","$2_it",
795                                                       "EXPORT_VAR_AS_FUNCTION",
796                                                       "FUNCTION");
797                                         next;
798                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
799                                         # Variant for platforms that do not
800                                         # have to access globale variables
801                                         # in shared libraries through functions
802                                         $def .=
803                                             "#INFO:"
804                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
805                                                     .join(',',@current_algorithms).";";
806                                         $def .= "OPENSSL_EXTERN int $1_it;";
807                                         $def .=
808                                             "#INFO:"
809                                                 .join(',',@current_platforms).":"
810                                                     .join(',',@current_algorithms).";";
811                                         # Variant for platforms that have to
812                                         # access globale variables in shared
813                                         # libraries through functions
814                                         &$make_variant("$1_it","$1_it",
815                                                       "EXPORT_VAR_AS_FUNCTION",
816                                                       "FUNCTION");
817                                         next;
818                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
819                                         $def .= "int i2d_$1_NDEF(void);";
820                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
821                                         next;
822                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
823                                         $def .= "int $1_print_ctx(void);";
824                                         next;
825                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
826                                         $def .= "int $2_print_ctx(void);";
827                                         next;
828                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
829                                         next;
830                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
831                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
832                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
833                                         # Things not in Win16
834                                         $def .=
835                                             "#INFO:"
836                                                 .join(',',"!WIN16",@current_platforms).":"
837                                                     .join(',',@current_algorithms).";";
838                                         $def .= "int PEM_read_$1(void);";
839                                         $def .= "int PEM_write_$1(void);";
840                                         $def .=
841                                             "#INFO:"
842                                                 .join(',',@current_platforms).":"
843                                                     .join(',',@current_algorithms).";";
844                                         # Things that are everywhere
845                                         $def .= "int PEM_read_bio_$1(void);";
846                                         $def .= "int PEM_write_bio_$1(void);";
847                                         next;
848                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
849                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
850                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
851                                         # Things not in Win16
852                                         $def .=
853                                             "#INFO:"
854                                                 .join(',',"!WIN16",@current_platforms).":"
855                                                     .join(',',@current_algorithms).";";
856                                         $def .= "int PEM_write_$1(void);";
857                                         $def .=
858                                             "#INFO:"
859                                                 .join(',',@current_platforms).":"
860                                                     .join(',',@current_algorithms).";";
861                                         # Things that are everywhere
862                                         $def .= "int PEM_write_bio_$1(void);";
863                                         next;
864                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
865                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
866                                         # Things not in Win16
867                                         $def .=
868                                             "#INFO:"
869                                                 .join(',',"!WIN16",@current_platforms).":"
870                                                     .join(',',@current_algorithms).";";
871                                         $def .= "int PEM_read_$1(void);";
872                                         $def .=
873                                             "#INFO:"
874                                                 .join(',',@current_platforms).":"
875                                                     .join(',',@current_algorithms).";";
876                                         # Things that are everywhere
877                                         $def .= "int PEM_read_bio_$1(void);";
878                                         next;
879                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
880                                         # Variant for platforms that do not
881                                         # have to access globale variables
882                                         # in shared libraries through functions
883                                         $def .=
884                                             "#INFO:"
885                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
886                                                     .join(',',@current_algorithms).";";
887                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
888                                         $def .=
889                                             "#INFO:"
890                                                 .join(',',@current_platforms).":"
891                                                     .join(',',@current_algorithms).";";
892                                         # Variant for platforms that have to
893                                         # access globale variables in shared
894                                         # libraries through functions
895                                         &$make_variant("_shadow_$2","_shadow_$2",
896                                                       "EXPORT_VAR_AS_FUNCTION",
897                                                       "FUNCTION");
898                                 } elsif ($tag{'CONST_STRICT'} != 1) {
899                                         if (/\{|\/\*|\([^\)]*$/) {
900                                                 $line = $_;
901                                         } else {
902                                                 $def .= $_;
903                                         }
904                                 }
905                         }
906                 }
907                 close(IN);
908
909                 my $algs;
910                 my $plays;
911
912                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
913                 foreach (split /;/, $def) {
914                         my $s; my $k = "FUNCTION"; my $p; my $a;
915                         s/^[\n\s]*//g;
916                         s/[\n\s]*$//g;
917                         next if(/\#undef/);
918                         next if(/typedef\W/);
919                         next if(/\#define/);
920
921                         # Reduce argument lists to empty ()
922                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
923                         while(/\(.*\)/s) {
924                                 s/\([^\(\)]+\)/\{\}/gs;
925                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
926                         }
927                         # pretend as we didn't use curly braces: {} -> ()
928                         s/\{\}/\(\)/gs;
929
930                         s/STACK_OF\(\)/void/gs;
931                         s/LHASH_OF\(\)/void/gs;
932
933                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
934                         if (/^\#INFO:([^:]*):(.*)$/) {
935                                 $plats = $1;
936                                 $algs = $2;
937                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
938                                 next;
939                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
940                                 $s = $1;
941                                 $k = "VARIABLE";
942                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
943                         } elsif (/TYPEDEF_\w+_OF/s) {
944                                 next;
945                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
946                                 $s = $1;                # a function name!
947                                 print STDERR "DEBUG: found function $s\n" if $debug;
948                         } elsif (/\(/ and not (/=/)) {
949                                 print STDERR "File $file: cannot parse: $_;\n";
950                                 next;
951                         } else {
952                                 next;
953                         }
954
955                         $syms{$s} = 1;
956                         $kind{$s} = $k;
957
958                         $p = $plats;
959                         $a = $algs;
960                         $a .= ",BF" if($s =~ /EVP_bf/);
961                         $a .= ",CAST" if($s =~ /EVP_cast/);
962                         $a .= ",DES" if($s =~ /EVP_des/);
963                         $a .= ",DSA" if($s =~ /EVP_dss/);
964                         $a .= ",IDEA" if($s =~ /EVP_idea/);
965                         $a .= ",MD2" if($s =~ /EVP_md2/);
966                         $a .= ",MD4" if($s =~ /EVP_md4/);
967                         $a .= ",MD5" if($s =~ /EVP_md5/);
968                         $a .= ",RC2" if($s =~ /EVP_rc2/);
969                         $a .= ",RC4" if($s =~ /EVP_rc4/);
970                         $a .= ",RC5" if($s =~ /EVP_rc5/);
971                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
972                         $a .= ",SHA" if($s =~ /EVP_sha/);
973                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
974                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
975                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
976                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
977
978                         $platform{$s} =
979                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
980                         $algorithm{$s} .= ','.$a;
981
982                         if (defined($variant{$s})) {
983                                 foreach $v (split /;/,$variant{$s}) {
984                                         (my $r, my $p, my $k) = split(/:/,$v);
985                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
986                                         $syms{$r} = 1;
987                                         if (!defined($k)) { $k = $kind{$s}; }
988                                         $kind{$r} = $k."(".$s.")";
989                                         $algorithm{$r} = $algorithm{$s};
990                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
991                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
992                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
993                                 }
994                         }
995                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
996                 }
997         }
998
999         # Prune the returned symbols
1000
1001         delete $syms{"bn_dump1"};
1002         $platform{"BIO_s_log"} .= ",!WIN32,!WIN16,!macintosh";
1003
1004         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
1005         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
1006         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
1007         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
1008         $platform{"EVP_sha384"} = "!VMSVAX";
1009         $platform{"EVP_sha512"} = "!VMSVAX";
1010         $platform{"SHA384_Init"} = "!VMSVAX";
1011         $platform{"SHA384_Transform"} = "!VMSVAX";
1012         $platform{"SHA384_Update"} = "!VMSVAX";
1013         $platform{"SHA384_Final"} = "!VMSVAX";
1014         $platform{"SHA384"} = "!VMSVAX";
1015         $platform{"SHA512_Init"} = "!VMSVAX";
1016         $platform{"SHA512_Transform"} = "!VMSVAX";
1017         $platform{"SHA512_Update"} = "!VMSVAX";
1018         $platform{"SHA512_Final"} = "!VMSVAX";
1019         $platform{"SHA512"} = "!VMSVAX";
1020
1021
1022         # Info we know about
1023
1024         push @ret, map { $_."\\".&info_string($_,"EXIST",
1025                                               $platform{$_},
1026                                               $kind{$_},
1027                                               $algorithm{$_}) } keys %syms;
1028
1029         if (keys %unknown_algorithms) {
1030                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1031                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1032         }
1033         return(@ret);
1034 }
1035
1036 # Param: string of comma-separated platform-specs.
1037 sub reduce_platforms
1038 {
1039         my ($platforms) = @_;
1040         my $pl = defined($platforms) ? $platforms : "";
1041         my %p = map { $_ => 0 } split /,/, $pl;
1042         my $ret;
1043
1044         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1045             if $debug;
1046         # We do this, because if there's code like the following, it really
1047         # means the function exists in all cases and should therefore be
1048         # everywhere.  By increasing and decreasing, we may attain 0:
1049         #
1050         # ifndef WIN16
1051         #    int foo();
1052         # else
1053         #    int _fat foo();
1054         # endif
1055         foreach $platform (split /,/, $pl) {
1056                 if ($platform =~ /^!(.*)$/) {
1057                         $p{$1}--;
1058                 } else {
1059                         $p{$platform}++;
1060                 }
1061         }
1062         foreach $platform (keys %p) {
1063                 if ($p{$platform} == 0) { delete $p{$platform}; }
1064         }
1065
1066         delete $p{""};
1067
1068         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1069         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1070             if $debug;
1071         return $ret;
1072 }
1073
1074 sub info_string {
1075         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1076
1077         my %a = defined($algorithms) ?
1078             map { $_ => 1 } split /,/, $algorithms : ();
1079         my $k = defined($kind) ? $kind : "FUNCTION";
1080         my $ret;
1081         my $p = &reduce_platforms($platforms);
1082
1083         delete $a{""};
1084
1085         $ret = $exist;
1086         $ret .= ":".$p;
1087         $ret .= ":".$k;
1088         $ret .= ":".join(',',sort keys %a);
1089         return $ret;
1090 }
1091
1092 sub maybe_add_info {
1093         (my $name, *nums, my @symbols) = @_;
1094         my $sym;
1095         my $new_info = 0;
1096         my %syms=();
1097
1098         print STDERR "Updating $name info\n";
1099         foreach $sym (@symbols) {
1100                 (my $s, my $i) = split /\\/, $sym;
1101                 if (defined($nums{$s})) {
1102                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1103                         (my $n, my $dummy) = split /\\/, $nums{$s};
1104                         if (!defined($dummy) || $i ne $dummy) {
1105                                 $nums{$s} = $n."\\".$i;
1106                                 $new_info++;
1107                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1108                         }
1109                 }
1110                 $syms{$s} = 1;
1111         }
1112
1113         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1114         foreach $sym (@s) {
1115                 (my $n, my $i) = split /\\/, $nums{$sym};
1116                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1117                         $new_info++;
1118                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1119                 }
1120         }
1121         if ($new_info) {
1122                 print STDERR "$new_info old symbols got an info update\n";
1123                 if (!$do_rewrite) {
1124                         print STDERR "You should do a rewrite to fix this.\n";
1125                 }
1126         } else {
1127                 print STDERR "No old symbols needed info update\n";
1128         }
1129 }
1130
1131 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1132 sub is_valid
1133 {
1134         my ($keywords_txt,$platforms) = @_;
1135         my (@keywords) = split /,/,$keywords_txt;
1136         my ($falsesum, $truesum) = (0, 1);
1137
1138         # Param: one keyword
1139         sub recognise
1140         {
1141                 my ($keyword,$platforms) = @_;
1142
1143                 if ($platforms) {
1144                         # platforms
1145                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1146                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1147                         if ($keyword eq "VMS" && $VMS) { return 1; }
1148                         if ($keyword eq "WIN32" && $W32) { return 1; }
1149                         if ($keyword eq "WIN16" && $W16) { return 1; }
1150                         if ($keyword eq "WINNT" && $NT) { return 1; }
1151                         if ($keyword eq "OS2" && $OS2) { return 1; }
1152                         # Special platforms:
1153                         # EXPORT_VAR_AS_FUNCTION means that global variables
1154                         # will be represented as functions.  This currently
1155                         # only happens on VMS-VAX.
1156                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32 || $W16)) {
1157                                 return 1;
1158                         }
1159                         if ($keyword eq "OPENSSL_FIPSCAPABLE") {
1160                                 return 0;
1161                         }
1162                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1163                                 return 1;
1164                         }
1165                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1166                         return 0;
1167                 } else {
1168                         # algorithms
1169                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1170                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1171                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1172                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1173                         if ($keyword eq "DES" && $no_des) { return 0; }
1174                         if ($keyword eq "BF" && $no_bf) { return 0; }
1175                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1176                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1177                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1178                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1179                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1180                         if ($keyword eq "RIPEMD" && $no_ripemd) { return 0; }
1181                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1182                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1183                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1184                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1185                         if ($keyword eq "DH" && $no_dh) { return 0; }
1186                         if ($keyword eq "EC" && $no_ec) { return 0; }
1187                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1188                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1189                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1190                         if ($keyword eq "AES" && $no_aes) { return 0; }
1191                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1192                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1193                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1194                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1195                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1196                         if ($keyword eq "ERR" && $no_err) { return 0; }
1197                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1198                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1199                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1200                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1201                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1202                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1203                         if ($keyword eq "HW" && $no_hw) { return 0; }
1204                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1205                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1206                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1207                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1208                         if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }
1209                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1210                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1211                         if ($keyword eq "EC_NISTP_64_GCC_128" && $no_nistp_gcc)
1212                                         { return 0; }
1213                         if ($keyword eq "EC2M" && $no_ec2m) { return 0; }
1214                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1215                         if ($keyword eq "SSL2" && $no_ssl2) { return 0; }
1216                         if ($keyword eq "SSL3_METHOD" && $no_ssl3_method) { return 0; }
1217                         if ($keyword eq "SSL_TRACE" && $no_ssl_trace) { return 0; }
1218                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1219                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1220                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1221                         if ($keyword eq "SCTP" && $no_sctp) { return 0; }
1222                         if ($keyword eq "SRTP" && $no_srtp) { return 0; }
1223                         if ($keyword eq "UNIT_TEST" && $no_unit_test) { return 0; }
1224                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1225
1226                         # Nothing recognise as true
1227                         return 1;
1228                 }
1229         }
1230
1231         foreach $k (@keywords) {
1232                 if ($k =~ /^!(.*)$/) {
1233                         $falsesum += &recognise($1,$platforms);
1234                 } else {
1235                         $truesum *= &recognise($k,$platforms);
1236                 }
1237         }
1238         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1239         return (!$falsesum) && $truesum;
1240 }
1241
1242 sub print_test_file
1243 {
1244         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1245         my $n = 1; my @e; my @r;
1246         my $sym; my $prev = ""; my $prefSSLeay;
1247
1248         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1249         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1250         @symbols=((sort @e),(sort @r));
1251
1252         foreach $sym (@symbols) {
1253                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1254                 my $v = 0;
1255                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1256                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1257                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1258                 if (!defined($nums{$s})) {
1259                         print STDERR "Warning: $s does not have a number assigned\n"
1260                             if(!$do_update);
1261                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1262                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1263                         if ($prev eq $s2) {
1264                                 print OUT "\t/* The following has already appeared previously */\n";
1265                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1266                         }
1267                         $prev = $s2;    # To warn about duplicates...
1268
1269                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1270                         if ($v) {
1271                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1272                         } else {
1273                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1274                         }
1275                 }
1276         }
1277 }
1278
1279 sub get_version {
1280    local *MF;
1281    my $v = '?';
1282    open MF, 'Makefile' or return $v;
1283    while (<MF>) {
1284      $v = $1, last if /^VERSION=(.*?)\s*$/;
1285    }
1286    close MF;
1287    return $v;
1288 }
1289
1290 sub print_def_file
1291 {
1292         (*OUT,my $name,*nums,my @symbols)=@_;
1293         my $n = 1; my @e; my @r; my @v; my $prev="";
1294         my $liboptions="";
1295         my $libname = $name;
1296         my $http_vendor = 'www.openssl.org/';
1297         my $version = get_version();
1298         my $what = "OpenSSL: implementation of Secure Socket Layer";
1299         my $description = "$what $version, $name - http://$http_vendor";
1300
1301         if ($W32)
1302                 { $libname.="32"; }
1303         elsif ($W16)
1304                 { $libname.="16"; }
1305         elsif ($OS2)
1306                 { # DLL names should not clash on the whole system.
1307                   # However, they should not have any particular relationship
1308                   # to the name of the static library.  Chose descriptive names
1309                   # (must be at most 8 chars).
1310                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1311                   $libname = $translate{$name} || $name;
1312                   $liboptions = <<EOO;
1313 INITINSTANCE
1314 DATA MULTIPLE NONSHARED
1315 EOO
1316                   # Vendor field can't contain colon, drat; so we omit http://
1317                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1318                 }
1319
1320         print OUT <<"EOF";
1321 ;
1322 ; Definition file for the DLL version of the $name library from OpenSSL
1323 ;
1324
1325 LIBRARY         $libname        $liboptions
1326
1327 EOF
1328
1329         if ($W16) {
1330                 print <<"EOF";
1331 CODE            PRELOAD MOVEABLE
1332 DATA            PRELOAD MOVEABLE SINGLE
1333
1334 EXETYPE         WINDOWS
1335
1336 HEAPSIZE        4096
1337 STACKSIZE       8192
1338
1339 EOF
1340         }
1341
1342         print "EXPORTS\n";
1343
1344         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1345         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1346         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1347         @symbols=((sort @e),(sort @r), (sort @v));
1348
1349
1350         foreach $sym (@symbols) {
1351                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1352                 my $v = 0;
1353                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1354                 if (!defined($nums{$s})) {
1355                         printf STDERR "Warning: $s does not have a number assigned\n"
1356                             if(!$do_update);
1357                 } else {
1358                         (my $n, my $dummy) = split /\\/, $nums{$s};
1359                         my %pf = ();
1360                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1361                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1362                         if (is_valid($p,1) && is_valid($a,0)) {
1363                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1364                                 if ($prev eq $s2) {
1365                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1366                                 }
1367                                 $prev = $s2;    # To warn about duplicates...
1368                                 if($v && !$OS2) {
1369                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1370                                 } else {
1371                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1372                                 }
1373                         }
1374                 }
1375         }
1376         printf OUT "\n";
1377 }
1378
1379 sub load_numbers
1380 {
1381         my($name)=@_;
1382         my(@a,%ret);
1383
1384         $max_num = 0;
1385         $num_noinfo = 0;
1386         $prev = "";
1387         $prev_cnt = 0;
1388
1389         open(IN,"<$name") || die "unable to open $name:$!\n";
1390         while (<IN>) {
1391                 chop;
1392                 s/#.*$//;
1393                 next if /^\s*$/;
1394                 @a=split;
1395                 if (defined $ret{$a[0]}) {
1396                         # This is actually perfectly OK
1397                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1398                 }
1399                 if ($max_num > $a[1]) {
1400                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1401                 }
1402                 elsif ($max_num == $a[1]) {
1403                         # This is actually perfectly OK
1404                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1405                         if ($a[0] eq $prev) {
1406                                 $prev_cnt++;
1407                                 $a[0] .= "{$prev_cnt}";
1408                         }
1409                 }
1410                 else {
1411                         $prev_cnt = 0;
1412                 }
1413                 if ($#a < 2) {
1414                         # Existence will be proven later, in do_defs
1415                         $ret{$a[0]}=$a[1];
1416                         $num_noinfo++;
1417                 } else {
1418                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1419                 }
1420                 $max_num = $a[1] if $a[1] > $max_num;
1421                 $prev=$a[0];
1422         }
1423         if ($num_noinfo) {
1424                 print STDERR "Warning: $num_noinfo symbols were without info.";
1425                 if ($do_rewrite) {
1426                         printf STDERR "  The rewrite will fix this.\n";
1427                 } else {
1428                         printf STDERR "  You should do a rewrite to fix this.\n";
1429                 }
1430         }
1431         close(IN);
1432         return(%ret);
1433 }
1434
1435 sub parse_number
1436 {
1437         (my $str, my $what) = @_;
1438         (my $n, my $i) = split(/\\/,$str);
1439         if ($what eq "n") {
1440                 return $n;
1441         } else {
1442                 return $i;
1443         }
1444 }
1445
1446 sub rewrite_numbers
1447 {
1448         (*OUT,$name,*nums,@symbols)=@_;
1449         my $thing;
1450
1451         print STDERR "Rewriting $name\n";
1452
1453         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1454         my $r; my %r; my %rsyms;
1455         foreach $r (@r) {
1456                 (my $s, my $i) = split /\\/, $r;
1457                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1458                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1459                 $r{$a} = $s."\\".$i;
1460                 $rsyms{$s} = 1;
1461         }
1462
1463         my %syms = ();
1464         foreach $_ (@symbols) {
1465                 (my $n, my $i) = split /\\/;
1466                 $syms{$n} = 1;
1467         }
1468
1469         my @s=sort {
1470             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1471             || $a cmp $b
1472         } keys %nums;
1473         foreach $sym (@s) {
1474                 (my $n, my $i) = split /\\/, $nums{$sym};
1475                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1476                 next if defined($rsyms{$sym});
1477                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1478                 $i="NOEXIST::FUNCTION:"
1479                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1480                 my $s2 = $sym;
1481                 $s2 =~ s/\{[0-9]+\}$//;
1482                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1483                 if (exists $r{$sym}) {
1484                         (my $s, $i) = split /\\/,$r{$sym};
1485                         my $s2 = $s;
1486                         $s2 =~ s/\{[0-9]+\}$//;
1487                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1488                 }
1489         }
1490 }
1491
1492 sub update_numbers
1493 {
1494         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1495         my $new_syms = 0;
1496
1497         print STDERR "Updating $name numbers\n";
1498
1499         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1500         my $r; my %r; my %rsyms;
1501         foreach $r (@r) {
1502                 (my $s, my $i) = split /\\/, $r;
1503                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1504                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1505                 $r{$a} = $s."\\".$i;
1506                 $rsyms{$s} = 1;
1507         }
1508
1509         foreach $sym (@symbols) {
1510                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1511                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1512                 next if defined($rsyms{$sym});
1513                 die "ERROR: Symbol $sym had no info attached to it."
1514                     if $i eq "";
1515                 next if $i =~ /OPENSSL_FIPSCAPABLE/;
1516                 if (!exists $nums{$s}) {
1517                         $new_syms++;
1518                         my $s2 = $s;
1519                         $s2 =~ s/\{[0-9]+\}$//;
1520                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1521                         if (exists $r{$s}) {
1522                                 ($s, $i) = split /\\/,$r{$s};
1523                                 $s =~ s/\{[0-9]+\}$//;
1524                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1525                         }
1526                 }
1527         }
1528         if($new_syms) {
1529                 print STDERR "$new_syms New symbols added\n";
1530         } else {
1531                 print STDERR "No New symbols Added\n";
1532         }
1533 }
1534
1535 sub check_existing
1536 {
1537         (*nums, my @symbols)=@_;
1538         my %existing; my @remaining;
1539         @remaining=();
1540         foreach $sym (@symbols) {
1541                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1542                 $existing{$s}=1;
1543         }
1544         foreach $sym (keys %nums) {
1545                 if (!exists $existing{$sym}) {
1546                         push @remaining, $sym;
1547                 }
1548         }
1549         if(@remaining) {
1550                 print STDERR "The following symbols do not seem to exist:\n";
1551                 foreach $sym (@remaining) {
1552                         print STDERR "\t",$sym,"\n";
1553                 }
1554         }
1555 }
1556