Commit | Line | Data |
eab60bb1 |
1 | use ExtUtils::MakeMaker; |
2 | use Config; |
3 | use strict; |
4 | |
6bb0de4e |
5 | our $VERSION = "1.10_01"; |
eab60bb1 |
6 | |
7 | my %err = (); |
4d70086c |
8 | my %wsa = (); |
eab60bb1 |
9 | |
27da23d5 |
10 | # Symbian cross-compiling environment. |
11 | my $IsSymbian = exists $ENV{SDK} && -d "$ENV{SDK}\\epoc32"; |
12 | |
13 | my $IsMSWin32 = $^O eq 'MSWin32' && !$IsSymbian; |
14 | |
eab60bb1 |
15 | unlink "Errno.pm" if -f "Errno.pm"; |
16 | open OUT, ">Errno.pm" or die "Cannot open Errno.pm: $!"; |
17 | select OUT; |
18 | my $file; |
1e92bf58 |
19 | my @files = get_files(); |
20 | if ($Config{gccversion} ne '' && $^O eq 'MSWin32') { |
21 | # MinGW complains "warning: #pragma system_header ignored outside include |
22 | # file" if the header files are processed individually, so include them |
23 | # all in .c file and process that instead. |
24 | open INCS, '>includes.c' or |
25 | die "Cannot open includes.c"; |
26 | foreach $file (@files) { |
eeb7067f |
27 | next if $file eq 'errno.c'; |
28 | next unless -f $file; |
1e92bf58 |
29 | print INCS qq[#include "$file"\n]; |
30 | } |
31 | close INCS; |
32 | process_file('includes.c'); |
33 | unlink 'includes.c'; |
34 | } |
35 | else { |
36 | foreach $file (@files) { |
37 | process_file($file); |
38 | } |
eab60bb1 |
39 | } |
40 | write_errno_pm(); |
41 | unlink "errno.c" if -f "errno.c"; |
42 | |
43 | sub process_file { |
44 | my($file) = @_; |
45 | |
22402b47 |
46 | # for win32 perl under cygwin, we need to get a windows pathname |
47 | if ($^O eq 'MSWin32' && $Config{cc} =~ /\B-mno-cygwin\b/ && |
48 | defined($file) && !-f $file) { |
49 | chomp($file = `cygpath -w "$file"`); |
50 | } |
51 | |
6683669a |
52 | return unless defined $file and -f $file; |
27da23d5 |
53 | # warn "Processing $file\n"; |
eab60bb1 |
54 | |
55 | local *FH; |
56 | if (($^O eq 'VMS') && ($Config{vms_cc_type} ne 'gnuc')) { |
57 | unless(open(FH," LIBRARY/EXTRACT=ERRNO/OUTPUT=SYS\$OUTPUT $file |")) { |
58 | warn "Cannot open '$file'"; |
59 | return; |
60 | } |
7237d657 |
61 | } elsif ($Config{gccversion} ne '' |
8ff7320b |
62 | # OpenSTEP has gcc 2.7.2.1 which recognizes but |
63 | # doesn't implement the -dM flag. |
8f4f83ba |
64 | && $^O ne 'openstep' && $^O ne 'next' && $^O ne 'darwin' |
8ff7320b |
65 | ) { |
9ae2e8df |
66 | # With the -dM option, gcc outputs every #define it finds |
ee1e7ac2 |
67 | unless(open(FH,"$Config{cc} -E -dM $Config{cppflags} $file |")) { |
9ae2e8df |
68 | warn "Cannot open '$file'"; |
69 | return; |
70 | } |
eab60bb1 |
71 | } else { |
72 | unless(open(FH,"< $file")) { |
def887e8 |
73 | # This file could be a temporary file created by cppstdin |
6ad8d9a8 |
74 | # so only warn under -w, and return |
75 | warn "Cannot open '$file'" if $^W; |
eab60bb1 |
76 | return; |
77 | } |
78 | } |
27da23d5 |
79 | |
db5fd395 |
80 | if ($^O eq 'MacOS') { |
81 | while(<FH>) { |
82 | $err{$1} = $2 |
83 | if /^\s*#\s*define\s+(E\w+)\s+(\d+)/; |
84 | } |
85 | } else { |
86 | while(<FH>) { |
87 | $err{$1} = 1 |
88 | if /^\s*#\s*define\s+(E\w+)\s+/; |
27da23d5 |
89 | if ($IsMSWin32) { |
4d70086c |
90 | $wsa{$1} = 1 |
91 | if /^\s*#\s*define\s+WSA(E\w+)\s+/; |
92 | } |
db5fd395 |
93 | } |
94 | } |
27da23d5 |
95 | |
db5fd395 |
96 | close(FH); |
eab60bb1 |
97 | } |
98 | |
def887e8 |
99 | my $cppstdin; |
100 | |
101 | sub default_cpp { |
102 | unless (defined $cppstdin) { |
103 | use File::Spec; |
104 | $cppstdin = $Config{cppstdin}; |
105 | my $upup_cppstdin = File::Spec->catfile(File::Spec->updir, |
106 | File::Spec->updir, |
107 | "cppstdin"); |
108 | my $cppstdin_is_wrapper = |
109 | ($cppstdin eq 'cppstdin' |
110 | and -f $upup_cppstdin |
111 | and -x $upup_cppstdin); |
112 | $cppstdin = $upup_cppstdin if $cppstdin_is_wrapper; |
113 | } |
114 | return "$cppstdin $Config{cppflags} $Config{cppminus}"; |
115 | } |
116 | |
eab60bb1 |
117 | sub get_files { |
118 | my %file = (); |
119 | # VMS keeps its include files in system libraries (well, except for Gcc) |
120 | if ($^O eq 'VMS') { |
121 | if ($Config{vms_cc_type} eq 'decc') { |
122 | $file{'Sys$Library:DECC$RTLDEF.TLB'} = 1; |
123 | } elsif ($Config{vms_cc_type} eq 'vaxc') { |
124 | $file{'Sys$Library:vaxcdef.tlb'} = 1; |
125 | } elsif ($Config{vms_cc_type} eq 'gcc') { |
126 | $file{'gnu_cc_include:[000000]errno.h'} = 1; |
127 | } |
9d116dd7 |
128 | } elsif ($^O eq 'os390') { |
129 | # OS/390 C compiler doesn't generate #file or #line directives |
130 | $file{'/usr/include/errno.h'} = 1; |
092bebab |
131 | } elsif ($^O eq 'vmesa') { |
132 | # OS/390 C compiler doesn't generate #file or #line directives |
133 | $file{'../../vmesa/errno.h'} = 1; |
a367e475 |
134 | } elsif ($Config{archname} eq 'epoc') { |
135 | # Watch out for cross compiling for EPOC (usually done on linux) |
02a99678 |
136 | $file{'/usr/local/epocemx/epocsdk/include/libc/sys/errno.h'} = 1; |
7ee146b1 |
137 | } elsif ($Config{archname} eq 'arm-riscos') { |
138 | # Watch out for cross compiling for RISC OS |
139 | my $dep = `echo "#include <errno.h>" | gcc -E -M -`; |
140 | if ($dep =~ /(\S+errno\.h)/) { |
141 | $file{$1} = 1; |
142 | } |
022394cf |
143 | } elsif ($^O eq 'linux' && |
65a03812 |
144 | $Config{gccversion} ne '' && |
e9014798 |
145 | $Config{gccversion} !~ /intel/i |
146 | # might be using, say, Intel's icc |
022394cf |
147 | ) { |
9ae2e8df |
148 | # Some Linuxes have weird errno.hs which generate |
149 | # no #file or #line directives |
a148bc21 |
150 | my $linux_errno_h = -e '/usr/include/errno.h' ? |
151 | '/usr/include/errno.h' : '/usr/local/include/errno.h'; |
152 | $file{$linux_errno_h} = 1; |
db5fd395 |
153 | } elsif ($^O eq 'MacOS') { |
154 | # note that we are only getting the GUSI errno's here ... |
155 | # we might miss out on compiler-specific ones |
156 | $file{"$ENV{GUSI}include:sys:errno.h"} = 1; |
157 | |
df00ff3b |
158 | } elsif ($^O eq 'beos' || $^O eq 'haiku') { |
0d3cd356 |
159 | # hidden in a special place |
160 | $file{'/boot/develop/headers/posix/errno.h'} = 1; |
161 | |
196918b0 |
162 | } elsif ($^O eq 'vos') { |
163 | # avoid problem where cpp returns non-POSIX pathnames |
164 | $file{'/system/include_library/errno.h'} = 1; |
27da23d5 |
165 | } elsif ($IsSymbian) { |
166 | my $SDK = $ENV{SDK}; |
167 | $SDK =~ s!\\!/!g; |
168 | $file{"$SDK/epoc32/include/libc/sys/errno.h"} = 1; |
eab60bb1 |
169 | } else { |
170 | open(CPPI,"> errno.c") or |
171 | die "Cannot open errno.c"; |
172 | |
2986a63f |
173 | if ($^O eq 'NetWare') { |
c623ac67 |
174 | print CPPI "#include <nwerrno.h>\n"; |
2986a63f |
175 | } else { |
c623ac67 |
176 | print CPPI "#include <errno.h>\n"; |
27da23d5 |
177 | if ($IsMSWin32) { |
c623ac67 |
178 | print CPPI "#define _WINSOCKAPI_\n"; # don't drag in everything |
179 | print CPPI "#include <winsock.h>\n"; |
180 | } |
2986a63f |
181 | } |
eab60bb1 |
182 | |
183 | close(CPPI); |
184 | |
185 | # invoke CPP and read the output |
27da23d5 |
186 | if ($IsMSWin32 || $^O eq 'NetWare') { |
6ad8d9a8 |
187 | open(CPPO,"$Config{cpprun} $Config{cppflags} errno.c |") or |
188 | die "Cannot run '$Config{cpprun} $Config{cppflags} errno.c'"; |
189 | } else { |
def887e8 |
190 | my $cpp = default_cpp(); |
6ad8d9a8 |
191 | open(CPPO,"$cpp < errno.c |") or |
192 | die "Cannot exec $cpp"; |
193 | } |
eab60bb1 |
194 | |
195 | my $pat; |
27da23d5 |
196 | if (($IsMSWin32 || $^O eq 'NetWare') and $Config{cc} =~ /^bcc/i) { |
eab60bb1 |
197 | $pat = '^/\*\s+(.+)\s+\d+\s*:\s+\*/'; |
198 | } |
199 | else { |
d0d1d9b9 |
200 | $pat = '^#\s*(?:line)?\s*\d+\s+"([^"]+)"'; |
eab60bb1 |
201 | } |
202 | while(<CPPO>) { |
27da23d5 |
203 | if ($^O eq 'os2' or $IsMSWin32 or $^O eq 'NetWare') { |
0196e43b |
204 | if (/$pat/o) { |
205 | my $f = $1; |
206 | $f =~ s,\\\\,/,g; |
207 | $file{$f} = 1; |
208 | } |
209 | } |
210 | else { |
211 | $file{$1} = 1 if /$pat/o; |
212 | } |
eab60bb1 |
213 | } |
214 | close(CPPO); |
215 | } |
216 | return keys %file; |
217 | } |
218 | |
219 | sub write_errno_pm { |
220 | my $err; |
221 | |
def887e8 |
222 | # quick sanity check |
223 | |
224 | die "No error definitions found" unless keys %err; |
225 | |
eab60bb1 |
226 | # create the CPP input |
227 | |
228 | open(CPPI,"> errno.c") or |
229 | die "Cannot open errno.c"; |
230 | |
2986a63f |
231 | if ($^O eq 'NetWare') { |
4d70086c |
232 | print CPPI "#include <nwerrno.h>\n"; |
233 | } |
234 | else { |
235 | print CPPI "#include <errno.h>\n"; |
236 | } |
27da23d5 |
237 | if ($IsMSWin32) { |
4d70086c |
238 | print CPPI "#include <winsock.h>\n"; |
239 | foreach $err (keys %wsa) { |
240 | print CPPI "#ifndef $err\n"; |
241 | print CPPI "#define $err WSA$err\n"; |
242 | print CPPI "#endif\n"; |
243 | $err{$err} = 1; |
2986a63f |
244 | } |
4d70086c |
245 | } |
246 | |
eab60bb1 |
247 | foreach $err (keys %err) { |
248 | print CPPI '"',$err,'" [[',$err,']]',"\n"; |
249 | } |
250 | |
251 | close(CPPI); |
252 | |
dbc1d986 |
253 | unless ($^O eq 'MacOS' || $^O eq 'beos') { # trust what we have / get later |
eab60bb1 |
254 | # invoke CPP and read the output |
dcbf900d |
255 | |
db5fd395 |
256 | if ($^O eq 'VMS') { |
257 | my $cpp = "$Config{cppstdin} $Config{cppflags} $Config{cppminus}"; |
258 | $cpp =~ s/sys\$input//i; |
259 | open(CPPO,"$cpp errno.c |") or |
260 | die "Cannot exec $Config{cppstdin}"; |
27da23d5 |
261 | } elsif ($IsMSWin32 || $^O eq 'NetWare') { |
db5fd395 |
262 | open(CPPO,"$Config{cpprun} $Config{cppflags} errno.c |") or |
263 | die "Cannot run '$Config{cpprun} $Config{cppflags} errno.c'"; |
27da23d5 |
264 | } elsif ($IsSymbian) { |
265 | my $cpp = "gcc -E -I$ENV{SDK}\\epoc32\\include\\libc -"; |
266 | open(CPPO,"$cpp < errno.c |") |
267 | or die "Cannot exec $cpp"; |
268 | } else { |
db5fd395 |
269 | my $cpp = default_cpp(); |
270 | open(CPPO,"$cpp < errno.c |") |
271 | or die "Cannot exec $cpp"; |
272 | } |
eab60bb1 |
273 | |
db5fd395 |
274 | %err = (); |
eab60bb1 |
275 | |
db5fd395 |
276 | while(<CPPO>) { |
277 | my($name,$expr); |
278 | next unless ($name, $expr) = /"(.*?)"\s*\[\s*\[\s*(.*?)\s*\]\s*\]/; |
279 | next if $name eq $expr; |
a633c72b |
280 | $expr =~ s/\(?\([a-z_]\w*\)([^\)]*)\)?/$1/i; # ((type)0xcafebabe) at alia |
99228ec2 |
281 | $expr =~ s/((?:0x)?[0-9a-fA-F]+)[LU]+\b/$1/g; # 2147483647L et alia |
282 | next if $expr =~ m/^[a-zA-Z]+$/; # skip some Win32 functions |
283 | if($expr =~ m/^0[xX]/) { |
284 | $err{$name} = hex $expr; |
285 | } |
286 | else { |
db5fd395 |
287 | $err{$name} = eval $expr; |
288 | } |
99228ec2 |
289 | delete $err{$name} unless defined $err{$name}; |
290 | } |
db5fd395 |
291 | close(CPPO); |
eab60bb1 |
292 | } |
eab60bb1 |
293 | |
7bf567bf |
294 | # Many of the E constants (including ENOENT, which is being |
295 | # used in the Perl test suite a lot), are available only as |
296 | # enums in BeOS, so compiling and executing some code is about |
dbc1d986 |
297 | # only way to find out what the numeric Evalues are. In fact above, we |
298 | # didn't even bother to get the values of the ones that have numeric |
299 | # values, since we can get all of them here, anyway. |
7bf567bf |
300 | |
301 | if ($^O eq 'beos') { |
302 | if (open(C, ">errno.c")) { |
dbc1d986 |
303 | my @allerrs = keys %err; |
7bf567bf |
304 | print C <<EOF; |
305 | #include <errno.h> |
306 | #include <stdio.h> |
307 | int main() { |
308 | EOF |
dbc1d986 |
309 | for (@allerrs) { |
7bf567bf |
310 | print C qq[printf("$_ %d\n", $_);] |
311 | } |
312 | print C "}\n"; |
313 | close C; |
314 | system("cc -o errno errno.c"); |
315 | unlink("errno.c"); |
316 | if (open(C, "./errno|")) { |
317 | while (<C>) { |
318 | if (/^(\w+) (-?\d+)$/) { $err{$1} = $2 } |
319 | } |
320 | close(C); |
321 | } else { |
322 | die "failed to execute ./errno: $!\n"; |
323 | } |
324 | unlink("errno"); |
325 | } else { |
326 | die "failed to create errno.c: $!\n"; |
327 | } |
328 | } |
329 | |
eab60bb1 |
330 | # Write Errno.pm |
331 | |
332 | print <<"EDQ"; |
333 | # |
334 | # This file is auto-generated. ***ANY*** changes here will be lost |
335 | # |
336 | |
337 | package Errno; |
f168a5e7 |
338 | our (\@EXPORT_OK,\%EXPORT_TAGS,\@ISA,\$VERSION,\%errno,\$AUTOLOAD); |
eab60bb1 |
339 | use Exporter (); |
340 | use Config; |
341 | use strict; |
342 | |
8bc9d590 |
343 | "\$Config{'archname'}-\$Config{'osvers'}" eq |
344 | "$Config{'archname'}-$Config{'osvers'}" or |
81be85b8 |
345 | die "Errno architecture ($Config{'archname'}-$Config{'osvers'}) does not match executable architecture (\$Config{'archname'}-\$Config{'osvers'})"; |
eab60bb1 |
346 | |
347 | \$VERSION = "$VERSION"; |
105cd853 |
348 | \$VERSION = eval \$VERSION; |
eab60bb1 |
349 | \@ISA = qw(Exporter); |
350 | |
351 | EDQ |
352 | |
353 | my $len = 0; |
354 | my @err = sort { $err{$a} <=> $err{$b} } keys %err; |
355 | map { $len = length if length > $len } @err; |
356 | |
357 | my $j = "\@EXPORT_OK = qw(" . join(" ",keys %err) . ");\n"; |
358 | $j =~ s/(.{50,70})\s/$1\n\t/g; |
359 | print $j,"\n"; |
360 | |
361 | print <<'ESQ'; |
362 | %EXPORT_TAGS = ( |
363 | POSIX => [qw( |
364 | ESQ |
365 | |
366 | my $k = join(" ", grep { exists $err{$_} } |
367 | qw(E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EAFNOSUPPORT |
368 | EAGAIN EALREADY EBADF EBUSY ECHILD ECONNABORTED |
369 | ECONNREFUSED ECONNRESET EDEADLK EDESTADDRREQ EDOM EDQUOT |
370 | EEXIST EFAULT EFBIG EHOSTDOWN EHOSTUNREACH EINPROGRESS |
371 | EINTR EINVAL EIO EISCONN EISDIR ELOOP EMFILE EMLINK |
372 | EMSGSIZE ENAMETOOLONG ENETDOWN ENETRESET ENETUNREACH |
373 | ENFILE ENOBUFS ENODEV ENOENT ENOEXEC ENOLCK ENOMEM |
374 | ENOPROTOOPT ENOSPC ENOSYS ENOTBLK ENOTCONN ENOTDIR |
375 | ENOTEMPTY ENOTSOCK ENOTTY ENXIO EOPNOTSUPP EPERM |
376 | EPFNOSUPPORT EPIPE EPROCLIM EPROTONOSUPPORT EPROTOTYPE |
377 | ERANGE EREMOTE ERESTART EROFS ESHUTDOWN ESOCKTNOSUPPORT |
378 | ESPIPE ESRCH ESTALE ETIMEDOUT ETOOMANYREFS ETXTBSY |
379 | EUSERS EWOULDBLOCK EXDEV)); |
380 | |
381 | $k =~ s/(.{50,70})\s/$1\n\t/g; |
382 | print "\t",$k,"\n )]\n);\n\n"; |
383 | |
384 | foreach $err (@err) { |
385 | printf "sub %s () { %d }\n",,$err,$err{$err}; |
386 | } |
387 | |
388 | print <<'ESQ'; |
389 | |
390 | sub TIEHASH { bless [] } |
391 | |
392 | sub FETCH { |
393 | my ($self, $errname) = @_; |
394 | my $proto = prototype("Errno::$errname"); |
68301627 |
395 | my $errno = ""; |
eab60bb1 |
396 | if (defined($proto) && $proto eq "") { |
397 | no strict 'refs'; |
68301627 |
398 | $errno = &$errname; |
399 | $errno = 0 unless $! == $errno; |
eab60bb1 |
400 | } |
68301627 |
401 | return $errno; |
93014de6 |
402 | } |
eab60bb1 |
403 | |
404 | sub STORE { |
405 | require Carp; |
406 | Carp::confess("ERRNO hash is read only!"); |
407 | } |
408 | |
409 | *CLEAR = \&STORE; |
410 | *DELETE = \&STORE; |
411 | |
412 | sub NEXTKEY { |
413 | my($k,$v); |
414 | while(($k,$v) = each %Errno::) { |
415 | my $proto = prototype("Errno::$k"); |
416 | last if (defined($proto) && $proto eq ""); |
eab60bb1 |
417 | } |
418 | $k |
419 | } |
420 | |
421 | sub FIRSTKEY { |
68301627 |
422 | my $s = scalar keys %Errno::; # initialize iterator |
eab60bb1 |
423 | goto &NEXTKEY; |
424 | } |
425 | |
426 | sub EXISTS { |
427 | my ($self, $errname) = @_; |
f8ed3476 |
428 | my $r = ref $errname; |
429 | my $proto = !$r || $r eq 'CODE' ? prototype($errname) : undef; |
eab60bb1 |
430 | defined($proto) && $proto eq ""; |
431 | } |
432 | |
433 | tie %!, __PACKAGE__; |
434 | |
435 | 1; |
436 | __END__ |
437 | |
438 | =head1 NAME |
439 | |
440 | Errno - System errno constants |
441 | |
442 | =head1 SYNOPSIS |
443 | |
444 | use Errno qw(EINTR EIO :POSIX); |
445 | |
446 | =head1 DESCRIPTION |
447 | |
448 | C<Errno> defines and conditionally exports all the error constants |
449 | defined in your system C<errno.h> include file. It has a single export |
450 | tag, C<:POSIX>, which will export all POSIX defined error numbers. |
451 | |
93014de6 |
452 | C<Errno> also makes C<%!> magic such that each element of C<%!> has a |
68301627 |
453 | non-zero value only if C<$!> is set to that value. For example: |
eab60bb1 |
454 | |
455 | use Errno; |
3cb6de81 |
456 | |
eab60bb1 |
457 | unless (open(FH, "/fangorn/spouse")) { |
458 | if ($!{ENOENT}) { |
459 | warn "Get a wife!\n"; |
460 | } else { |
461 | warn "This path is barred: $!"; |
462 | } |
463 | } |
464 | |
68301627 |
465 | If a specified constant C<EFOO> does not exist on the system, C<$!{EFOO}> |
466 | returns C<"">. You may use C<exists $!{EFOO}> to check whether the |
93014de6 |
467 | constant is available on the system. |
468 | |
68301627 |
469 | =head1 CAVEATS |
470 | |
471 | Importing a particular constant may not be very portable, because the |
472 | import will fail on platforms that do not have that constant. A more |
473 | portable way to set C<$!> to a valid value is to use: |
474 | |
475 | if (exists &Errno::EFOO) { |
476 | $! = &Errno::EFOO; |
477 | } |
478 | |
eab60bb1 |
479 | =head1 AUTHOR |
480 | |
481 | Graham Barr <gbarr@pobox.com> |
482 | |
483 | =head1 COPYRIGHT |
484 | |
485 | Copyright (c) 1997-8 Graham Barr. All rights reserved. |
486 | This program is free software; you can redistribute it and/or modify it |
487 | under the same terms as Perl itself. |
488 | |
489 | =cut |
490 | |
491 | ESQ |
492 | |
493 | } |