3 If you read this file _as_is_, just ignore the funny characters you
4 see. It is written in the POD format (see F<pod/perlpod.pod>) which is
5 specially designed to be readable as is.
9 perlcygwin - Perl for Cygwin
13 This document will help you configure, make, test and install Perl
14 on Cygwin. This document also describes features of Cygwin that will
15 affect how Perl behaves at runtime.
17 B<NOTE:> There are pre-built Perl packages available for Cygwin and a
18 version of Perl is provided in the normal Cygwin install. If you do
19 not need to customize the configuration, consider using one of those
23 =head1 PREREQUISITES FOR COMPILING PERL ON CYGWIN
25 =head2 Cygwin = GNU+Cygnus+Windows (Don't leave UNIX without it)
27 The Cygwin tools are ports of the popular GNU development tools for Win32
28 platforms. They run thanks to the Cygwin library which provides the UNIX
29 system calls and environment these programs expect. More information
30 about this project can be found at:
32 L<https://www.cygwin.com/>
34 A recent net or commercial release of Cygwin is required.
36 At the time this document was last updated, Cygwin 3.0.7 was current.
39 =head2 Cygwin Configuration
41 While building Perl some changes may be necessary to your Cygwin setup so
42 that Perl builds cleanly. These changes are B<not> required for normal
45 B<NOTE:> The binaries that are built will run on all Win32 versions.
46 They do not depend on your host system or your
47 Cygwin configuration (binary/text mounts, cygserver).
48 The only dependencies come from hard-coded pathnames like F</usr/local>.
49 However, your host system and Cygwin configuration will affect Perl's
50 runtime behavior (see L</"TEST">).
56 Set the C<PATH> environment variable so that Configure finds the Cygwin
57 versions of programs. Any not-needed Windows directories should be removed or
58 moved to the end of your C<PATH>.
62 If you do not have I<nroff> (which is part of the I<groff> package),
63 Configure will B<not> prompt you to install I<man> pages.
67 =head1 CONFIGURE PERL ON CYGWIN
69 The default options gathered by Configure with the assistance of
70 F<hints/cygwin.sh> will build a Perl that supports dynamic loading
71 (which requires a shared F<cygperl5_16.dll>).
73 This will run Configure and keep a record:
75 ./Configure 2>&1 | tee log.configure
77 If you are willing to accept all the defaults run Configure with B<-de>.
78 However, several useful customizations are available.
80 =head2 Stripping Perl Binaries on Cygwin
82 It is possible to strip the EXEs and DLLs created by the build process.
83 The resulting binaries will be significantly smaller. If you want the
84 binaries to be stripped, you can either add a B<-s> option when Configure
87 Any additional ld flags (NOT including libraries)? [none] -s
88 Any special flags to pass to g++ to create a dynamically loaded
91 Any special flags to pass to gcc to use dynamic linking? [none] -s
93 or you can edit F<hints/cygwin.sh> and uncomment the relevant variables
94 near the end of the file.
96 =head2 Optional Libraries for Perl on Cygwin
98 Several Perl functions and modules depend on the existence of
99 some optional libraries. Configure will find them if they are
100 installed in one of the directories listed as being used for library
101 searches. Pre-built packages for most of these are available from
102 the Cygwin installer.
108 The crypt package distributed with Cygwin is a Linux compatible 56-bit
109 DES crypt port by Corinna Vinschen.
111 Alternatively, the crypt libraries in GNU libc have been ported to Cygwin.
113 As of libcrypt 1.3 (March 2016), you will need to install the
114 libcrypt-devel package for Configure to detect crypt().
116 =item * C<-lgdbm_compat> (C<use GDBM_File>)
118 GDBM is available for Cygwin.
120 NOTE: The GDBM library only works on NTFS partitions.
122 =item * C<-ldb> (C<use DB_File>)
124 BerkeleyDB is available for Cygwin.
126 NOTE: The BerkeleyDB library only completely works on NTFS partitions.
128 =item * C<cygserver> (C<use IPC::SysV>)
130 A port of SysV IPC is available for Cygwin.
132 NOTE: This has B<not> been extensively tested. In particular,
133 C<d_semctl_semun> is undefined because it fails a Configure test. It
134 also creates a compile time dependency because F<perl.h> includes
135 F<<sys/ipc.h>> and F<<sys/sem.h>> (which will be required in the
136 future when compiling CPAN modules). CURRENTLY NOT SUPPORTED!
140 Included with the standard Cygwin netrelease is the inetutils package
141 which includes libutil.a.
145 =head2 Configure-time Options for Perl on Cygwin
147 The F<INSTALL> document describes several Configure-time options. Some of
148 these will work with Cygwin, others are not yet possible. Also, some of
149 these are experimental. You can either select an option when Configure
150 prompts you or you can define (undefine) symbols on the command line.
156 Undefining this symbol forces Perl to be compiled statically.
158 =item * C<-Dusemymalloc>
160 By default Perl does not use the C<malloc()> included with the Perl source,
161 because it was slower and not entirely thread-safe. If you want to force
162 Perl to build with the old -Dusemymalloc define this.
164 =item * C<-Uuseperlio>
166 Undefining this symbol disables the PerlIO abstraction. PerlIO is now the
167 default; it is not recommended to disable PerlIO.
169 =item * C<-Dusemultiplicity>
171 Multiplicity is required when embedding Perl in a C program and using
172 more than one interpreter instance. This is only required when you build
173 a not-threaded perl with C<-Uuseithreads>.
175 =item * C<-Uuse64bitint>
177 By default Perl uses 64 bit integers. If you want to use smaller 32 bit
178 integers, define this symbol.
180 =item * C<-Duselongdouble>
182 I<gcc> supports long doubles (12 bytes). However, several additional
183 long double math functions are necessary to use them within Perl
184 (I<{atan2, cos, exp, floor, fmod, frexp, isnan, log, modf, pow, sin, sqrt}l,
186 These are B<not> yet available with newlib, the Cygwin libc.
188 =item * C<-Uuseithreads>
190 Define this symbol if you want not-threaded faster perl.
192 =item * C<-Duselargefiles>
194 Cygwin uses 64-bit integers for internal size and position calculations,
195 this will be correctly detected and defined by Configure.
197 =item * C<-Dmksymlinks>
199 Use this to build perl outside of the source tree. Details can be
200 found in the F<INSTALL> document. This is the recommended way to
201 build perl from sources.
205 =head1 MAKE ON CYGWIN
207 Simply run I<make> and wait:
209 make 2>&1 | tee log.make
211 =head1 TEST ON CYGWIN
213 There are two steps to running the test suite:
215 make test 2>&1 | tee log.make-test
217 cd t; ./perl harness 2>&1 | tee ../log.harness
219 The same tests are run both times, but more information is provided when
220 running as C<./perl harness>.
222 Test results vary depending on your host system and your Cygwin
223 configuration. If a test can pass in some Cygwin setup, it is always
224 attempted and explainable test failures are documented. It is possible
225 for Perl to pass all the tests, but it is more likely that some tests
226 will fail for one of the reasons listed below.
228 =head2 File Permissions on Cygwin
230 UNIX file permissions are based on sets of mode bits for
231 {read,write,execute} for each {user,group,other}. By default Cygwin
232 only tracks the Win32 read-only attribute represented as the UNIX file
233 user write bit (files are always readable, files are executable if they
234 have a F<.{com,bat,exe}> extension or begin with C<#!>, directories are
235 always readable and executable). On WinNT with the I<ntea> C<CYGWIN>
236 setting, the additional mode bits are stored as extended file attributes.
237 On WinNT with the default I<ntsec> C<CYGWIN> setting, permissions use the
238 standard WinNT security descriptors and access control lists. Without one of
239 these options, these tests will fail (listing not updated yet):
241 Failed Test List of failed
242 ------------------------------------
252 op/stat.t 9, 20 (.tmp not an executable extension)
254 =head2 NDBM_File and ODBM_File do not work on FAT filesystems
256 Do not use NDBM_File or ODBM_File on FAT filesystem. They can be
257 built on a FAT filesystem, but many tests will fail:
259 ../ext/NDBM_File/ndbm.t 13 3328 71 59 83.10% 1-2 4 16-71
260 ../ext/ODBM_File/odbm.t 255 65280 ?? ?? % ??
261 ../lib/AnyDBM_File.t 2 512 12 2 16.67% 1 4
262 ../lib/Memoize/t/errors.t 0 139 11 5 45.45% 7-11
263 ../lib/Memoize/t/tie_ndbm.t 13 3328 4 4 100.00% 1-4
264 run/fresh_perl.t 97 1 1.03% 91
266 If you intend to run only on FAT (or if using AnyDBM_File on FAT),
267 run Configure with the -Ui_ndbm and -Ui_dbm options to prevent
268 NDBM_File and ODBM_File being built.
270 With NTFS (and no CYGWIN=nontsec), there should be no problems even if
271 perl was built on FAT.
273 =head2 C<fork()> failures in io_* tests
275 A C<fork()> failure may result in the following tests failing:
277 ext/IO/lib/IO/t/io_multihomed.t
278 ext/IO/lib/IO/t/io_sock.t
279 ext/IO/lib/IO/t/io_unix.t
281 See comment on fork in L</Miscellaneous> below.
283 =head1 Specific features of the Cygwin port
285 =head2 Script Portability on Cygwin
287 Cygwin does an outstanding job of providing UNIX-like semantics on top of
288 Win32 systems. However, in addition to the items noted above, there are
289 some differences that you should know about. This is a very brief guide
290 to portability, more information can be found in the Cygwin documentation.
296 Cygwin pathnames are separated by forward (F</>) slashes, Universal
297 Naming Codes (F<//UNC>) are also supported. Since cygwin-1.7 non-POSIX
298 pathnames should not be used. Names may contain all printable
301 File names are case insensitive, but case preserving. A pathname that
302 contains a backslash or drive letter is a Win32 pathname, and not
303 subject to the translations applied to POSIX style pathnames, but
304 cygwin will warn you, so better convert them to POSIX.
306 For conversion we have C<Cygwin::win_to_posix_path()> and
307 C<Cygwin::posix_to_win_path()>.
309 Since cygwin-1.7 pathnames are UTF-8 encoded.
313 Since cygwin-1.7 textmounts are deprecated and strongly discouraged.
315 When a file is opened it is in either text or binary mode. In text mode
316 a file is subject to CR/LF/Ctrl-Z translations. With Cygwin, the default
317 mode for an C<open()> is determined by the mode of the mount that underlies
318 the file. See L</Cygwin::is_binmount>(). Perl provides a C<binmode()> function
319 to set binary mode on files that otherwise would be treated as text.
320 C<sysopen()> with the C<O_TEXT> flag sets text mode on files that otherwise
321 would be treated as binary:
323 sysopen(FOO, "bar", O_WRONLY|O_CREAT|O_TEXT)
325 C<lseek()>, C<tell()> and C<sysseek()> only work with files opened in binary
328 The text/binary issue is covered at length in the Cygwin documentation.
332 PerlIO overrides the default Cygwin Text/Binary behaviour. A file will
333 always be treated as binary, regardless of the mode of the mount it lives
334 on, just like it is in UNIX. So CR/LF translation needs to be requested in
335 either the C<open()> call like this:
337 open(FH, ">:crlf", "out.txt");
339 which will do conversion from LF to CR/LF on the output, or in the
340 environment settings (add this to your .bashrc):
344 which will pull in the crlf PerlIO layer which does LF -> CRLF conversion
345 on every output generated by perl.
349 The Cygwin C<stat()>, C<lstat()> and C<readlink()> functions make the F<.exe>
350 extension transparent by looking for F<foo.exe> when you ask for F<foo>
351 (unless a F<foo> also exists). Cygwin does not require a F<.exe>
352 extension, but I<gcc> adds it automatically when building a program.
353 However, when accessing an executable as a normal file (e.g., I<cp>
354 in a makefile) the F<.exe> is not transparent. The I<install> program
355 included with Cygwin automatically appends a F<.exe> when necessary.
357 =item * Cygwin vs. Windows process ids
359 Cygwin processes have their own pid, which is different from the
360 underlying windows pid. Most posix compliant Proc functions expect
361 the cygwin pid, but several Win32::Process functions expect the
362 winpid. E.g. C<$$> is the cygwin pid of F</usr/bin/perl>, which is not
363 the winpid. Use C<Cygwin::pid_to_winpid()> and C<Cygwin::winpid_to_pid()>
364 to translate between them.
366 =item * Cygwin vs. Windows errors
368 Under Cygwin, $^E is the same as $!. When using L<Win32 API Functions|Win32>,
369 use C<Win32::GetLastError()> to get the last Windows error.
371 =item * rebase errors on fork or system
373 Using C<fork()> or C<system()> out to another perl after loading multiple dlls
374 may result on a DLL baseaddress conflict. The internal cygwin error
375 looks like like the following:
377 0 [main] perl 8916 child_info_fork::abort: data segment start:
378 parent (0xC1A000) != child(0xA6A000)
382 183 [main] perl 3588 C:\cygwin\bin\perl.exe: *** fatal error -
383 unable to remap C:\cygwin\bin\cygsvn_subr-1-0.dll to same address
384 as parent(0x6FB30000) != 0x6FE60000 46 [main] perl 3488 fork: child
385 3588 - died waiting for dll loading, errno11
387 See L<https://cygwin.com/faq/faq.html#faq.using.fixing-fork-failures>
388 It helps if not too many DLLs are loaded in memory so the available address space is larger,
389 e.g. stopping the MS Internet Explorer might help.
391 +Use the rebase utilities to resolve the conflicting dll addresses.
392 The rebase package is included in the Cygwin setup. Use F<setup.exe>
393 from L<https://cygwin.com/install.html> to install it.
395 1. kill all perl processes and run
396 C<</bin/find <dir> -xdev -name \*.dll | /bin/rebase -OT ->> or
398 2. kill all cygwin processes and services, and run setup.exe.
400 =item * Miscellaneous
402 File locking using the C<F_GETLK> command to C<fcntl()> is a stub that
405 The Cygwin C<chroot()> implementation has holes (it can not restrict file
406 access by native Win32 programs).
408 Inplace editing C<perl -i> of files doesn't work without doing a backup
409 of the file being edited C<perl -i.bak> because of windowish restrictions,
410 therefore Perl adds the suffix C<.bak> automatically if you use C<perl -i>
411 without specifying a backup extension.
415 =head2 Prebuilt methods:
421 Returns the current working directory.
423 =item C<Cygwin::pid_to_winpid>
425 Translates a cygwin pid to the corresponding Windows pid (which may or
426 may not be the same).
428 =item C<Cygwin::winpid_to_pid>
430 Translates a Windows pid to the corresponding cygwin pid (if any).
432 =item C<Cygwin::win_to_posix_path>
434 Translates a Windows path to the corresponding cygwin path respecting
435 the current mount points. With a second non-null argument returns an
436 absolute path. Double-byte characters will not be translated.
438 =item C<Cygwin::posix_to_win_path>
440 Translates a cygwin path to the corresponding cygwin path respecting
441 the current mount points. With a second non-null argument returns an
442 absolute path. Double-byte characters will not be translated.
444 =item C<Cygwin::mount_table()>
446 Returns an array of [mnt_dir, mnt_fsname, mnt_type, mnt_opts].
448 perl -e 'for $i (Cygwin::mount_table) {print join(" ",@$i),"\n";}'
449 /bin c:\cygwin\bin system binmode,cygexec
450 /usr/bin c:\cygwin\bin system binmode
451 /usr/lib c:\cygwin\lib system binmode
452 / c:\cygwin system binmode
453 /cygdrive/c c: system binmode,noumount
454 /cygdrive/d d: system binmode,noumount
455 /cygdrive/e e: system binmode,noumount
457 =item C<Cygwin::mount_flags>
459 Returns the mount type and flags for a specified mount point.
460 A comma-separated string of mntent->mnt_type (always
461 "system" or "user"), then the mntent->mnt_opts, where
462 the first is always "binmode" or "textmode".
464 system|user,binmode|textmode,exec,cygexec,cygdrive,mixed,
465 notexec,managed,nosuid,devfs,proc,noumount
467 If the argument is "/cygdrive", then just the volume mount settings,
468 and the cygdrive mount prefix are returned.
470 User mounts override system mounts.
472 $ perl -e 'print Cygwin::mount_flags "/usr/bin"'
473 system,binmode,cygexec
474 $ perl -e 'print Cygwin::mount_flags "/cygdrive"'
475 binmode,cygdrive,/cygdrive
477 =item C<Cygwin::is_binmount>
479 Returns true if the given cygwin path is binary mounted, false if the
480 path is mounted in textmode.
482 =item C<Cygwin::sync_winenv>
484 Cygwin does not initialize all original Win32 environment variables.
485 See the bottom of this page L<https://cygwin.com/cygwin-ug-net/setup-env.html>
486 for "Restricted Win32 environment".
488 Certain Win32 programs called from cygwin programs might need some environment
489 variable, such as e.g. ADODB needs %COMMONPROGRAMFILES%.
490 Call Cygwin::sync_winenv() to copy all Win32 environment variables to your
491 process and note that cygwin will warn on every encounter of non-POSIX paths.
495 =head1 INSTALL PERL ON CYGWIN
497 This will install Perl, including I<man> pages.
499 make install 2>&1 | tee log.make-install
501 NOTE: If C<STDERR> is redirected C<make install> will B<not> prompt
502 you to install I<perl> into F</usr/bin>.
504 You may need to be I<Administrator> to run C<make install>. If you
505 are not, you must have write access to the directories in question.
507 Information on installing the Perl documentation in HTML format can be
508 found in the F<INSTALL> document.
510 =head1 MANIFEST ON CYGWIN
512 These are the files in the Perl release that contain references to Cygwin.
513 These very brief notes attempt to explain the reason for all conditional
514 code. Hopefully, keeping this up to date will allow the Cygwin port to
515 be kept as clean as possible.
521 INSTALL README.cygwin README.win32 MANIFEST
522 pod/perl.pod pod/perlport.pod pod/perlfaq3.pod
523 pod/perldelta.pod pod/perl5004delta.pod pod/perl56delta.pod
524 pod/perl561delta.pod pod/perl570delta.pod pod/perl572delta.pod
525 pod/perl573delta.pod pod/perl58delta.pod pod/perl581delta.pod
526 pod/perl590delta.pod pod/perlhist.pod pod/perlmodlib.pod
527 pod/perltoc.pod Porting/Glossary pod/perlgit.pod
528 Porting/updateAUTHORS.pl
529 dist/Cwd/Changes ext/Compress-Raw-Zlib/Changes
530 dist/Time-HiRes/Changes
531 ext/Compress-Raw-Zlib/README ext/Compress-Zlib/Changes
532 ext/DB_File/Changes ext/Encode/Changes ext/Sys-Syslog/Changes
533 ext/Win32API-File/Changes
534 lib/ExtUtils/CBuilder/Changes lib/ExtUtils/Changes
535 lib/ExtUtils/NOTES lib/ExtUtils/PATCHING lib/ExtUtils/README
536 lib/Net/Ping/Changes lib/Test/Harness/Changes
537 lib/Term/ANSIColor/ChangeLog lib/Term/ANSIColor/README
539 =item Build, Configure, Make, Install
542 ext/IPC/SysV/hints/cygwin.pl
543 ext/NDBM_File/hints/cygwin.pl
544 ext/ODBM_File/hints/cygwin.pl
546 Configure - help finding hints from uname,
547 shared libperl required for dynamic loading
548 Makefile.SH Cross/Makefile-cross-SH
550 Porting/patchls - cygwin in port list
551 installman - man pages with :: translated to .
552 installperl - install dll, install to 'pods'
553 makedepend.SH - uwinfix
554 regen_lib.pl - file permissions
557 vms/descrip_mms.template
562 t/io/fs.t - no file mode checks if not ntsec
563 skip rename() check when not
565 t/io/tell.t - binmode
566 t/lib/cygwin.t - builtin cygwin function tests
567 t/op/groups.t - basegroup has ID = 0
568 t/op/magic.t - $^X/symlink WORKAROUND, s/.exe//
569 t/op/stat.t - no /dev, skip Win32 ftCreationTime quirk
570 (cache manager sometimes preserves ctime of
571 file previously created and deleted), no -u
573 t/op/taint.t - can't use empty path under Cygwin Perl
574 t/op/time.t - no tzset()
576 =item Compiled Perl Source
578 EXTERN.h - __declspec(dllimport)
579 XSUB.h - __declspec(dllexport)
580 cygwin/cygwin.c - os_extras (getcwd, spawn, and several
582 perl.c - os_extras, -i.bak
584 doio.c - win9x can not rename a file when it is open
585 pp_sys.c - do not define h_errno, init
586 _pwent_struct.pw_comment
588 util.h - PERL_FILE_IS_ABSOLUTE macro
589 pp.c - Comment about Posix vs IEEE math under
591 perlio.c - CR/LF mode
592 perliol.c - Comment about EXTCONST under Cygwin
594 =item Compiled Module Source
596 ext/Compress-Raw-Zlib/Makefile.PL
597 - Can't install via CPAN shell under Cygwin
598 ext/Compress-Raw-Zlib/zlib-src/zutil.h
599 - Cygwin is Unix-like and has vsnprintf
600 ext/Errno/Errno_pm.PL - Special handling for Win32 Perl under
602 ext/POSIX/POSIX.xs - tzname defined externally
603 ext/SDBM_File/sdbm/pair.c
604 - EXTCONST needs to be redefined from
606 ext/SDBM_File/sdbm/sdbm.c
608 ext/Sys/Syslog/Syslog.xs
609 - Cygwin has syslog.h
610 ext/Sys/Syslog/win32/compile.pl
611 - Convert paths to Windows paths
612 ext/Time-HiRes/HiRes.xs
613 - Various timers not available
614 ext/Time-HiRes/Makefile.PL
615 - Find w32api/windows.h
616 ext/Win32/Makefile.PL - Use various libraries under Cygwin
617 ext/Win32/Win32.xs - Child dir and child env under Cygwin
618 ext/Win32API-File/File.xs
619 - _open_osfhandle not implemented under
621 ext/Win32CORE/Win32CORE.c
622 - __declspec(dllexport)
624 =item Perl Modules/Scripts
626 ext/B/t/OptreeCheck.pm - Comment about stderr/stdout order under
628 ext/Digest-SHA/bin/shasum
629 - Use binary mode under Cygwin
630 ext/Sys/Syslog/win32/Win32.pm
631 - Convert paths to Windows paths
632 ext/Time-HiRes/HiRes.pm
633 - Comment about various timers not available
634 ext/Win32API-File/File.pm
635 - _open_osfhandle not implemented under
637 ext/Win32CORE/Win32CORE.pm
638 - History of Win32CORE under Cygwin
639 lib/Cwd.pm - hook to internal Cwd::cwd
640 lib/ExtUtils/CBuilder/Platform/cygwin.pm
641 - use gcc for ld, and link to libperl.dll.a
642 lib/ExtUtils/CBuilder.pm
643 - Cygwin is Unix-like
644 lib/ExtUtils/Install.pm - Install and rename issues under Cygwin
645 lib/ExtUtils/MM.pm - OS classifications
646 lib/ExtUtils/MM_Any.pm - Example for Cygwin
647 lib/ExtUtils/MakeMaker.pm
648 - require MM_Cygwin.pm
649 lib/ExtUtils/MM_Cygwin.pm
650 - canonpath, cflags, manifypods, perl_archive
651 lib/File/Fetch.pm - Comment about quotes using a Cygwin example
652 lib/File/Find.pm - on remote drives stat() always sets
654 lib/File/Spec/Cygwin.pm - case_tolerant
655 lib/File/Spec/Unix.pm - preserve //unc
656 lib/File/Spec/Win32.pm - References a message on cygwin.com
657 lib/File/Spec.pm - Pulls in lib/File/Spec/Cygwin.pm
658 lib/File/Temp.pm - no directory sticky bit
659 lib/Module/CoreList.pm - List of all module files and versions
660 lib/Net/Domain.pm - No domainname command under Cygwin
661 lib/Net/Netrc.pm - Bypass using stat() under Cygwin
662 lib/Net/Ping.pm - ECONREFUSED is EAGAIN under Cygwin
663 lib/Pod/Find.pm - Set 'pods' dir
664 lib/Pod/Perldoc/ToMan.pm - '-c' switch for pod2man
665 lib/Pod/Perldoc.pm - Use 'less' pager, and use .exe extension
666 lib/Term/ANSIColor.pm - Cygwin terminal info
667 lib/perl5db.pl - use stdin not /dev/tty
668 utils/perlbug.PL - Add CYGWIN environment variable to report
670 =item Perl Module Tests
673 ext/Compress-Zlib/t/14gzopen.t
674 ext/DB_File/t/db-btree.t
675 ext/DB_File/t/db-hash.t
676 ext/DB_File/t/db-recno.t
677 ext/DynaLoader/t/DynaLoader.t
678 ext/File-Glob/t/basic.t
679 ext/GDBM_File/t/gdbm.t
680 ext/POSIX/t/sysconf.t
682 ext/SDBM_File/t/sdbm.t
683 ext/Sys/Syslog/t/syslog.t
684 ext/Time-HiRes/t/HiRes.t
685 ext/Win32/t/Unicode.t
686 ext/Win32API-File/t/file.t
687 ext/Win32CORE/t/win32core.t
689 lib/Archive/Extract/t/01_Archive-Extract.t
690 lib/Archive/Tar/t/02_methods.t
691 lib/ExtUtils/t/Embed.t
692 lib/ExtUtils/t/eu_command.t
693 lib/ExtUtils/t/MM_Cygwin.t
694 lib/ExtUtils/t/MM_Unix.t
697 lib/File/Find/t/find.t
699 lib/File/Spec/t/crossplatform.t
700 lib/File/Spec/t/Spec.t
702 lib/Net/Ping/t/110_icmp_inst.t
703 lib/Net/Ping/t/500_ping_icmp.t
705 lib/Pod/Simple/t/perlcyg.pod
706 lib/Pod/Simple/t/perlcygo.txt
707 lib/Pod/Simple/t/perlfaq.pod
708 lib/Pod/Simple/t/perlfaqo.txt
714 =head1 BUGS ON CYGWIN
716 Support for swapping real and effective user and group IDs is incomplete.
717 On WinNT Cygwin provides C<setuid()>, C<seteuid()>, C<setgid()> and C<setegid()>.
718 However, additional Cygwin calls for manipulating WinNT access tokens
719 and security contexts are required.
723 Charles Wilson <cwilson@ece.gatech.edu>,
724 Eric Fifer <egf7@columbia.edu>,
725 alexander smishlajev <als@turnhere.com>,
726 Steven Morlock <newspost@morlock.net>,
727 Sebastien Barre <Sebastien.Barre@utc.fr>,
728 Teun Burgers <burgers@ecn.nl>,
729 Gerrit P. Haase <gp@familiehaase.de>,
730 Reini Urban <rurban@cpan.org>,
731 Jan Dubois <jand@activestate.com>,
732 Jerry D. Hedden <jdhedden@cpan.org>.
736 Last updated: 2019-11-14