Commit | Line | Data |
eab60bb1 |
1 | use ExtUtils::MakeMaker; |
2 | use Config; |
3 | use strict; |
4 | |
27abe0f1 |
5 | our $VERSION = "1.11"; |
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"; |
cedab142 |
16 | unlink "Errno.tmp" if -f "Errno.tmp"; |
17 | open OUT, ">Errno.tmp" or die "Cannot open Errno.tmp: $!"; |
eab60bb1 |
18 | select OUT; |
19 | my $file; |
1e92bf58 |
20 | my @files = get_files(); |
21 | if ($Config{gccversion} ne '' && $^O eq 'MSWin32') { |
22 | # MinGW complains "warning: #pragma system_header ignored outside include |
23 | # file" if the header files are processed individually, so include them |
24 | # all in .c file and process that instead. |
25 | open INCS, '>includes.c' or |
26 | die "Cannot open includes.c"; |
27 | foreach $file (@files) { |
eeb7067f |
28 | next if $file eq 'errno.c'; |
29 | next unless -f $file; |
1e92bf58 |
30 | print INCS qq[#include "$file"\n]; |
31 | } |
32 | close INCS; |
33 | process_file('includes.c'); |
34 | unlink 'includes.c'; |
35 | } |
36 | else { |
37 | foreach $file (@files) { |
38 | process_file($file); |
39 | } |
eab60bb1 |
40 | } |
41 | write_errno_pm(); |
42 | unlink "errno.c" if -f "errno.c"; |
f5800e99 |
43 | close OUT or die "Error closing Errno.tmp: $!"; |
44 | select STDOUT; |
cedab142 |
45 | rename "Errno.tmp", "Errno.pm" or die "Cannot rename Errno.tmp to Errno.pm: $!"; |
eab60bb1 |
46 | |
47 | sub process_file { |
48 | my($file) = @_; |
49 | |
22402b47 |
50 | # for win32 perl under cygwin, we need to get a windows pathname |
51 | if ($^O eq 'MSWin32' && $Config{cc} =~ /\B-mno-cygwin\b/ && |
52 | defined($file) && !-f $file) { |
53 | chomp($file = `cygpath -w "$file"`); |
54 | } |
55 | |
6683669a |
56 | return unless defined $file and -f $file; |
27da23d5 |
57 | # warn "Processing $file\n"; |
eab60bb1 |
58 | |
59 | local *FH; |
60 | if (($^O eq 'VMS') && ($Config{vms_cc_type} ne 'gnuc')) { |
61 | unless(open(FH," LIBRARY/EXTRACT=ERRNO/OUTPUT=SYS\$OUTPUT $file |")) { |
62 | warn "Cannot open '$file'"; |
63 | return; |
64 | } |
7237d657 |
65 | } elsif ($Config{gccversion} ne '' |
8ff7320b |
66 | # OpenSTEP has gcc 2.7.2.1 which recognizes but |
67 | # doesn't implement the -dM flag. |
8f4f83ba |
68 | && $^O ne 'openstep' && $^O ne 'next' && $^O ne 'darwin' |
8ff7320b |
69 | ) { |
9ae2e8df |
70 | # With the -dM option, gcc outputs every #define it finds |
ee1e7ac2 |
71 | unless(open(FH,"$Config{cc} -E -dM $Config{cppflags} $file |")) { |
9ae2e8df |
72 | warn "Cannot open '$file'"; |
73 | return; |
74 | } |
eab60bb1 |
75 | } else { |
76 | unless(open(FH,"< $file")) { |
def887e8 |
77 | # This file could be a temporary file created by cppstdin |
6ad8d9a8 |
78 | # so only warn under -w, and return |
79 | warn "Cannot open '$file'" if $^W; |
eab60bb1 |
80 | return; |
81 | } |
82 | } |
27da23d5 |
83 | |
db5fd395 |
84 | if ($^O eq 'MacOS') { |
85 | while(<FH>) { |
86 | $err{$1} = $2 |
87 | if /^\s*#\s*define\s+(E\w+)\s+(\d+)/; |
88 | } |
89 | } else { |
90 | while(<FH>) { |
91 | $err{$1} = 1 |
92 | if /^\s*#\s*define\s+(E\w+)\s+/; |
27da23d5 |
93 | if ($IsMSWin32) { |
4d70086c |
94 | $wsa{$1} = 1 |
95 | if /^\s*#\s*define\s+WSA(E\w+)\s+/; |
96 | } |
db5fd395 |
97 | } |
98 | } |
27da23d5 |
99 | |
db5fd395 |
100 | close(FH); |
eab60bb1 |
101 | } |
102 | |
def887e8 |
103 | my $cppstdin; |
104 | |
105 | sub default_cpp { |
106 | unless (defined $cppstdin) { |
107 | use File::Spec; |
108 | $cppstdin = $Config{cppstdin}; |
109 | my $upup_cppstdin = File::Spec->catfile(File::Spec->updir, |
110 | File::Spec->updir, |
111 | "cppstdin"); |
112 | my $cppstdin_is_wrapper = |
113 | ($cppstdin eq 'cppstdin' |
114 | and -f $upup_cppstdin |
115 | and -x $upup_cppstdin); |
116 | $cppstdin = $upup_cppstdin if $cppstdin_is_wrapper; |
117 | } |
118 | return "$cppstdin $Config{cppflags} $Config{cppminus}"; |
119 | } |
120 | |
eab60bb1 |
121 | sub get_files { |
122 | my %file = (); |
123 | # VMS keeps its include files in system libraries (well, except for Gcc) |
124 | if ($^O eq 'VMS') { |
125 | if ($Config{vms_cc_type} eq 'decc') { |
126 | $file{'Sys$Library:DECC$RTLDEF.TLB'} = 1; |
127 | } elsif ($Config{vms_cc_type} eq 'vaxc') { |
128 | $file{'Sys$Library:vaxcdef.tlb'} = 1; |
129 | } elsif ($Config{vms_cc_type} eq 'gcc') { |
130 | $file{'gnu_cc_include:[000000]errno.h'} = 1; |
131 | } |
9d116dd7 |
132 | } elsif ($^O eq 'os390') { |
133 | # OS/390 C compiler doesn't generate #file or #line directives |
134 | $file{'/usr/include/errno.h'} = 1; |
092bebab |
135 | } elsif ($^O eq 'vmesa') { |
136 | # OS/390 C compiler doesn't generate #file or #line directives |
137 | $file{'../../vmesa/errno.h'} = 1; |
a367e475 |
138 | } elsif ($Config{archname} eq 'epoc') { |
139 | # Watch out for cross compiling for EPOC (usually done on linux) |
02a99678 |
140 | $file{'/usr/local/epocemx/epocsdk/include/libc/sys/errno.h'} = 1; |
7ee146b1 |
141 | } elsif ($Config{archname} eq 'arm-riscos') { |
142 | # Watch out for cross compiling for RISC OS |
143 | my $dep = `echo "#include <errno.h>" | gcc -E -M -`; |
144 | if ($dep =~ /(\S+errno\.h)/) { |
145 | $file{$1} = 1; |
146 | } |
022394cf |
147 | } elsif ($^O eq 'linux' && |
65a03812 |
148 | $Config{gccversion} ne '' && |
e9014798 |
149 | $Config{gccversion} !~ /intel/i |
150 | # might be using, say, Intel's icc |
022394cf |
151 | ) { |
9ae2e8df |
152 | # Some Linuxes have weird errno.hs which generate |
153 | # no #file or #line directives |
a148bc21 |
154 | my $linux_errno_h = -e '/usr/include/errno.h' ? |
155 | '/usr/include/errno.h' : '/usr/local/include/errno.h'; |
156 | $file{$linux_errno_h} = 1; |
db5fd395 |
157 | } elsif ($^O eq 'MacOS') { |
158 | # note that we are only getting the GUSI errno's here ... |
159 | # we might miss out on compiler-specific ones |
160 | $file{"$ENV{GUSI}include:sys:errno.h"} = 1; |
161 | |
df00ff3b |
162 | } elsif ($^O eq 'beos' || $^O eq 'haiku') { |
0d3cd356 |
163 | # hidden in a special place |
164 | $file{'/boot/develop/headers/posix/errno.h'} = 1; |
165 | |
196918b0 |
166 | } elsif ($^O eq 'vos') { |
167 | # avoid problem where cpp returns non-POSIX pathnames |
168 | $file{'/system/include_library/errno.h'} = 1; |
27da23d5 |
169 | } elsif ($IsSymbian) { |
170 | my $SDK = $ENV{SDK}; |
171 | $SDK =~ s!\\!/!g; |
172 | $file{"$SDK/epoc32/include/libc/sys/errno.h"} = 1; |
eab60bb1 |
173 | } else { |
174 | open(CPPI,"> errno.c") or |
175 | die "Cannot open errno.c"; |
176 | |
2986a63f |
177 | if ($^O eq 'NetWare') { |
c623ac67 |
178 | print CPPI "#include <nwerrno.h>\n"; |
2986a63f |
179 | } else { |
c623ac67 |
180 | print CPPI "#include <errno.h>\n"; |
27da23d5 |
181 | if ($IsMSWin32) { |
c623ac67 |
182 | print CPPI "#define _WINSOCKAPI_\n"; # don't drag in everything |
183 | print CPPI "#include <winsock.h>\n"; |
184 | } |
2986a63f |
185 | } |
eab60bb1 |
186 | |
187 | close(CPPI); |
188 | |
189 | # invoke CPP and read the output |
27da23d5 |
190 | if ($IsMSWin32 || $^O eq 'NetWare') { |
6ad8d9a8 |
191 | open(CPPO,"$Config{cpprun} $Config{cppflags} errno.c |") or |
192 | die "Cannot run '$Config{cpprun} $Config{cppflags} errno.c'"; |
193 | } else { |
def887e8 |
194 | my $cpp = default_cpp(); |
6ad8d9a8 |
195 | open(CPPO,"$cpp < errno.c |") or |
196 | die "Cannot exec $cpp"; |
197 | } |
eab60bb1 |
198 | |
199 | my $pat; |
27da23d5 |
200 | if (($IsMSWin32 || $^O eq 'NetWare') and $Config{cc} =~ /^bcc/i) { |
eab60bb1 |
201 | $pat = '^/\*\s+(.+)\s+\d+\s*:\s+\*/'; |
202 | } |
203 | else { |
d0d1d9b9 |
204 | $pat = '^#\s*(?:line)?\s*\d+\s+"([^"]+)"'; |
eab60bb1 |
205 | } |
206 | while(<CPPO>) { |
27da23d5 |
207 | if ($^O eq 'os2' or $IsMSWin32 or $^O eq 'NetWare') { |
0196e43b |
208 | if (/$pat/o) { |
209 | my $f = $1; |
210 | $f =~ s,\\\\,/,g; |
211 | $file{$f} = 1; |
212 | } |
213 | } |
214 | else { |
215 | $file{$1} = 1 if /$pat/o; |
216 | } |
eab60bb1 |
217 | } |
218 | close(CPPO); |
219 | } |
220 | return keys %file; |
221 | } |
222 | |
223 | sub write_errno_pm { |
224 | my $err; |
225 | |
def887e8 |
226 | # quick sanity check |
227 | |
228 | die "No error definitions found" unless keys %err; |
229 | |
eab60bb1 |
230 | # create the CPP input |
231 | |
232 | open(CPPI,"> errno.c") or |
233 | die "Cannot open errno.c"; |
234 | |
2986a63f |
235 | if ($^O eq 'NetWare') { |
4d70086c |
236 | print CPPI "#include <nwerrno.h>\n"; |
237 | } |
238 | else { |
239 | print CPPI "#include <errno.h>\n"; |
240 | } |
27da23d5 |
241 | if ($IsMSWin32) { |
4d70086c |
242 | print CPPI "#include <winsock.h>\n"; |
243 | foreach $err (keys %wsa) { |
244 | print CPPI "#ifndef $err\n"; |
245 | print CPPI "#define $err WSA$err\n"; |
246 | print CPPI "#endif\n"; |
247 | $err{$err} = 1; |
2986a63f |
248 | } |
4d70086c |
249 | } |
250 | |
eab60bb1 |
251 | foreach $err (keys %err) { |
252 | print CPPI '"',$err,'" [[',$err,']]',"\n"; |
253 | } |
254 | |
255 | close(CPPI); |
256 | |
dbc1d986 |
257 | unless ($^O eq 'MacOS' || $^O eq 'beos') { # trust what we have / get later |
eab60bb1 |
258 | # invoke CPP and read the output |
dcbf900d |
259 | |
db5fd395 |
260 | if ($^O eq 'VMS') { |
261 | my $cpp = "$Config{cppstdin} $Config{cppflags} $Config{cppminus}"; |
262 | $cpp =~ s/sys\$input//i; |
263 | open(CPPO,"$cpp errno.c |") or |
264 | die "Cannot exec $Config{cppstdin}"; |
27da23d5 |
265 | } elsif ($IsMSWin32 || $^O eq 'NetWare') { |
db5fd395 |
266 | open(CPPO,"$Config{cpprun} $Config{cppflags} errno.c |") or |
267 | die "Cannot run '$Config{cpprun} $Config{cppflags} errno.c'"; |
27da23d5 |
268 | } elsif ($IsSymbian) { |
269 | my $cpp = "gcc -E -I$ENV{SDK}\\epoc32\\include\\libc -"; |
270 | open(CPPO,"$cpp < errno.c |") |
271 | or die "Cannot exec $cpp"; |
272 | } else { |
db5fd395 |
273 | my $cpp = default_cpp(); |
274 | open(CPPO,"$cpp < errno.c |") |
275 | or die "Cannot exec $cpp"; |
276 | } |
eab60bb1 |
277 | |
db5fd395 |
278 | %err = (); |
eab60bb1 |
279 | |
db5fd395 |
280 | while(<CPPO>) { |
281 | my($name,$expr); |
282 | next unless ($name, $expr) = /"(.*?)"\s*\[\s*\[\s*(.*?)\s*\]\s*\]/; |
283 | next if $name eq $expr; |
a633c72b |
284 | $expr =~ s/\(?\([a-z_]\w*\)([^\)]*)\)?/$1/i; # ((type)0xcafebabe) at alia |
99228ec2 |
285 | $expr =~ s/((?:0x)?[0-9a-fA-F]+)[LU]+\b/$1/g; # 2147483647L et alia |
286 | next if $expr =~ m/^[a-zA-Z]+$/; # skip some Win32 functions |
287 | if($expr =~ m/^0[xX]/) { |
288 | $err{$name} = hex $expr; |
289 | } |
290 | else { |
db5fd395 |
291 | $err{$name} = eval $expr; |
292 | } |
99228ec2 |
293 | delete $err{$name} unless defined $err{$name}; |
294 | } |
db5fd395 |
295 | close(CPPO); |
eab60bb1 |
296 | } |
eab60bb1 |
297 | |
7bf567bf |
298 | # Many of the E constants (including ENOENT, which is being |
299 | # used in the Perl test suite a lot), are available only as |
300 | # enums in BeOS, so compiling and executing some code is about |
dbc1d986 |
301 | # only way to find out what the numeric Evalues are. In fact above, we |
302 | # didn't even bother to get the values of the ones that have numeric |
303 | # values, since we can get all of them here, anyway. |
7bf567bf |
304 | |
305 | if ($^O eq 'beos') { |
306 | if (open(C, ">errno.c")) { |
dbc1d986 |
307 | my @allerrs = keys %err; |
7bf567bf |
308 | print C <<EOF; |
309 | #include <errno.h> |
310 | #include <stdio.h> |
311 | int main() { |
312 | EOF |
dbc1d986 |
313 | for (@allerrs) { |
7bf567bf |
314 | print C qq[printf("$_ %d\n", $_);] |
315 | } |
316 | print C "}\n"; |
317 | close C; |
318 | system("cc -o errno errno.c"); |
319 | unlink("errno.c"); |
320 | if (open(C, "./errno|")) { |
321 | while (<C>) { |
322 | if (/^(\w+) (-?\d+)$/) { $err{$1} = $2 } |
323 | } |
324 | close(C); |
325 | } else { |
326 | die "failed to execute ./errno: $!\n"; |
327 | } |
328 | unlink("errno"); |
329 | } else { |
330 | die "failed to create errno.c: $!\n"; |
331 | } |
332 | } |
333 | |
eab60bb1 |
334 | # Write Errno.pm |
335 | |
336 | print <<"EDQ"; |
337 | # |
338 | # This file is auto-generated. ***ANY*** changes here will be lost |
339 | # |
340 | |
341 | package Errno; |
f168a5e7 |
342 | our (\@EXPORT_OK,\%EXPORT_TAGS,\@ISA,\$VERSION,\%errno,\$AUTOLOAD); |
eab60bb1 |
343 | use Exporter (); |
344 | use Config; |
345 | use strict; |
346 | |
8bc9d590 |
347 | "\$Config{'archname'}-\$Config{'osvers'}" eq |
348 | "$Config{'archname'}-$Config{'osvers'}" or |
81be85b8 |
349 | die "Errno architecture ($Config{'archname'}-$Config{'osvers'}) does not match executable architecture (\$Config{'archname'}-\$Config{'osvers'})"; |
eab60bb1 |
350 | |
351 | \$VERSION = "$VERSION"; |
105cd853 |
352 | \$VERSION = eval \$VERSION; |
eab60bb1 |
353 | \@ISA = qw(Exporter); |
354 | |
355 | EDQ |
356 | |
357 | my $len = 0; |
358 | my @err = sort { $err{$a} <=> $err{$b} } keys %err; |
359 | map { $len = length if length > $len } @err; |
360 | |
361 | my $j = "\@EXPORT_OK = qw(" . join(" ",keys %err) . ");\n"; |
362 | $j =~ s/(.{50,70})\s/$1\n\t/g; |
363 | print $j,"\n"; |
364 | |
365 | print <<'ESQ'; |
366 | %EXPORT_TAGS = ( |
367 | POSIX => [qw( |
368 | ESQ |
369 | |
370 | my $k = join(" ", grep { exists $err{$_} } |
371 | qw(E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EAFNOSUPPORT |
372 | EAGAIN EALREADY EBADF EBUSY ECHILD ECONNABORTED |
373 | ECONNREFUSED ECONNRESET EDEADLK EDESTADDRREQ EDOM EDQUOT |
374 | EEXIST EFAULT EFBIG EHOSTDOWN EHOSTUNREACH EINPROGRESS |
375 | EINTR EINVAL EIO EISCONN EISDIR ELOOP EMFILE EMLINK |
376 | EMSGSIZE ENAMETOOLONG ENETDOWN ENETRESET ENETUNREACH |
377 | ENFILE ENOBUFS ENODEV ENOENT ENOEXEC ENOLCK ENOMEM |
378 | ENOPROTOOPT ENOSPC ENOSYS ENOTBLK ENOTCONN ENOTDIR |
379 | ENOTEMPTY ENOTSOCK ENOTTY ENXIO EOPNOTSUPP EPERM |
380 | EPFNOSUPPORT EPIPE EPROCLIM EPROTONOSUPPORT EPROTOTYPE |
381 | ERANGE EREMOTE ERESTART EROFS ESHUTDOWN ESOCKTNOSUPPORT |
382 | ESPIPE ESRCH ESTALE ETIMEDOUT ETOOMANYREFS ETXTBSY |
383 | EUSERS EWOULDBLOCK EXDEV)); |
384 | |
385 | $k =~ s/(.{50,70})\s/$1\n\t/g; |
386 | print "\t",$k,"\n )]\n);\n\n"; |
387 | |
388 | foreach $err (@err) { |
389 | printf "sub %s () { %d }\n",,$err,$err{$err}; |
390 | } |
391 | |
392 | print <<'ESQ'; |
393 | |
394 | sub TIEHASH { bless [] } |
395 | |
396 | sub FETCH { |
397 | my ($self, $errname) = @_; |
398 | my $proto = prototype("Errno::$errname"); |
68301627 |
399 | my $errno = ""; |
eab60bb1 |
400 | if (defined($proto) && $proto eq "") { |
401 | no strict 'refs'; |
68301627 |
402 | $errno = &$errname; |
403 | $errno = 0 unless $! == $errno; |
eab60bb1 |
404 | } |
68301627 |
405 | return $errno; |
93014de6 |
406 | } |
eab60bb1 |
407 | |
408 | sub STORE { |
409 | require Carp; |
410 | Carp::confess("ERRNO hash is read only!"); |
411 | } |
412 | |
413 | *CLEAR = \&STORE; |
414 | *DELETE = \&STORE; |
415 | |
416 | sub NEXTKEY { |
417 | my($k,$v); |
418 | while(($k,$v) = each %Errno::) { |
419 | my $proto = prototype("Errno::$k"); |
420 | last if (defined($proto) && $proto eq ""); |
eab60bb1 |
421 | } |
422 | $k |
423 | } |
424 | |
425 | sub FIRSTKEY { |
68301627 |
426 | my $s = scalar keys %Errno::; # initialize iterator |
eab60bb1 |
427 | goto &NEXTKEY; |
428 | } |
429 | |
430 | sub EXISTS { |
431 | my ($self, $errname) = @_; |
f8ed3476 |
432 | my $r = ref $errname; |
433 | my $proto = !$r || $r eq 'CODE' ? prototype($errname) : undef; |
eab60bb1 |
434 | defined($proto) && $proto eq ""; |
435 | } |
436 | |
437 | tie %!, __PACKAGE__; |
438 | |
439 | 1; |
440 | __END__ |
441 | |
442 | =head1 NAME |
443 | |
444 | Errno - System errno constants |
445 | |
446 | =head1 SYNOPSIS |
447 | |
448 | use Errno qw(EINTR EIO :POSIX); |
449 | |
450 | =head1 DESCRIPTION |
451 | |
452 | C<Errno> defines and conditionally exports all the error constants |
453 | defined in your system C<errno.h> include file. It has a single export |
454 | tag, C<:POSIX>, which will export all POSIX defined error numbers. |
455 | |
93014de6 |
456 | C<Errno> also makes C<%!> magic such that each element of C<%!> has a |
68301627 |
457 | non-zero value only if C<$!> is set to that value. For example: |
eab60bb1 |
458 | |
459 | use Errno; |
3cb6de81 |
460 | |
eab60bb1 |
461 | unless (open(FH, "/fangorn/spouse")) { |
462 | if ($!{ENOENT}) { |
463 | warn "Get a wife!\n"; |
464 | } else { |
465 | warn "This path is barred: $!"; |
466 | } |
467 | } |
468 | |
68301627 |
469 | If a specified constant C<EFOO> does not exist on the system, C<$!{EFOO}> |
470 | returns C<"">. You may use C<exists $!{EFOO}> to check whether the |
93014de6 |
471 | constant is available on the system. |
472 | |
68301627 |
473 | =head1 CAVEATS |
474 | |
475 | Importing a particular constant may not be very portable, because the |
476 | import will fail on platforms that do not have that constant. A more |
477 | portable way to set C<$!> to a valid value is to use: |
478 | |
479 | if (exists &Errno::EFOO) { |
480 | $! = &Errno::EFOO; |
481 | } |
482 | |
eab60bb1 |
483 | =head1 AUTHOR |
484 | |
485 | Graham Barr <gbarr@pobox.com> |
486 | |
487 | =head1 COPYRIGHT |
488 | |
489 | Copyright (c) 1997-8 Graham Barr. All rights reserved. |
490 | This program is free software; you can redistribute it and/or modify it |
491 | under the same terms as Perl itself. |
492 | |
493 | =cut |
494 | |
495 | ESQ |
496 | |
497 | } |