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Platform Specific

Perl for Cygwin

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NAME

perlcygwin - Perl for Cygwin

SYNOPSIS

This document will help you configure, make, test and install Perlon Cygwin. This document also describes features of Cygwin that willaffect how Perl behaves at runtime.

NOTE: There are pre-built Perl packages available for Cygwin and aversion of Perl is provided in the normal Cygwin install. If you donot need to customize the configuration, consider using one of thosepackages.

PREREQUISITES FOR COMPILING PERL ON CYGWIN

Cygwin = GNU+Cygnus+Windows (Don't leave UNIX without it)

The Cygwin tools are ports of the popular GNU development tools for Win32platforms. They run thanks to the Cygwin library which provides the UNIXsystem calls and environment these programs expect. More informationabout this project can be found at:

http://www.cygwin.com/

A recent net or commercial release of Cygwin is required.

At the time this document was last updated, Cygwin 1.7.10 was current.

Cygwin Configuration

While building Perl some changes may be necessary to your Cygwin setup sothat Perl builds cleanly. These changes are not required for normalPerl usage.

NOTE: The binaries that are built will run on all Win32 versions.They do not depend on your host system (WinXP/Win2K/Win7) or yourCygwin configuration (binary/text mounts, cvgserver).The only dependencies come from hard-coded pathnames like /usr/local.However, your host system and Cygwin configuration will affect Perl'sruntime behavior (see TEST).

  • PATH

    Set the PATH environment variable so that Configure finds the Cygwinversions of programs. Any not-needed Windows directories should be removed ormoved to the end of your PATH.

  • nroff

    If you do not have nroff (which is part of the groff package),Configure will not prompt you to install man pages.

CONFIGURE PERL ON CYGWIN

The default options gathered by Configure with the assistance ofhints/cygwin.sh will build a Perl that supports dynamic loading(which requires a shared cygperl5_16.dll).

This will run Configure and keep a record:

  1.   ./Configure 2>&1 | tee log.configure
    2.

If you are willing to accept all the defaults run Configure with -de.However, several useful customizations are available.

Stripping Perl Binaries on Cygwin

It is possible to strip the EXEs and DLLs created by the build process.The resulting binaries will be significantly smaller. If you want thebinaries to be stripped, you can either add a -s option when Configureprompts you,

  1.   Any additional ld flags (NOT including libraries)? [none] -s
    2.  
  2.   Any special flags to pass to g++ to create a dynamically loaded library?
    3.  
  3.   [none] -s
    4.  
  4.   Any special flags to pass to gcc to use dynamic linking? [none] -s
    5.

or you can edit hints/cygwin.sh and uncomment the relevant variablesnear the end of the file.

Optional Libraries for Perl on Cygwin

Several Perl functions and modules depend on the existence ofsome optional libraries. Configure will find them if they areinstalled in one of the directories listed as being used for librarysearches. Pre-built packages for most of these are available fromthe Cygwin installer.

  • -lcrypt

    The crypt package distributed with Cygwin is a Linux compatible 56-bitDES crypt port by Corinna Vinschen.

    Alternatively, the crypt libraries in GNU libc have been ported to Cygwin.

  • -lgdbm_compat (use GDBM_File)

    GDBM is available for Cygwin.

    NOTE: The GDBM library only works on NTFS partitions.

  • -ldb (use DB_File)

    BerkeleyDB is available for Cygwin.

    NOTE: The BerkeleyDB library only completely works on NTFS partitions.

  • cygserver (use IPC::SysV)

    A port of SysV IPC is available for Cygwin.

    NOTE: This has not been extensively tested. In particular,d_semctl_semun is undefined because it fails a Configure testand on Win9x the shm*() functions seem to hang. It also createsa compile time dependency because perl.h includes <sys/ipc.h>and <sys/sem.h> (which will be required in the future when compilingCPAN modules). CURRENTLY NOT SUPPORTED!

  • -lutil

    Included with the standard Cygwin netrelease is the inetutils packagewhich includes libutil.a.

Configure-time Options for Perl on Cygwin

The INSTALL document describes several Configure-time options. Some ofthese will work with Cygwin, others are not yet possible. Also, some ofthese are experimental. You can either select an option when Configureprompts you or you can define (undefine) symbols on the command line.

  • -Uusedl

    Undefining this symbol forces Perl to be compiled statically.

  • -Dusemymalloc

    By default Perl does not use the malloc() included with the Perl source,because it was slower and not entirely thread-safe. If you want to forcePerl to build with the old -Dusemymalloc define this.

  • -Uuseperlio

    Undefining this symbol disables the PerlIO abstraction. PerlIO is now thedefault; it is not recommended to disable PerlIO.

  • -Dusemultiplicity

    Multiplicity is required when embedding Perl in a C program and usingmore than one interpreter instance. This is only required when you builda not-threaded perl with -Uuseithreads.

  • -Uuse64bitint

    By default Perl uses 64 bit integers. If you want to use smaller 32 bitintegers, define this symbol.

  • -Duselongdouble

    gcc supports long doubles (12 bytes). However, several additionallong double math functions are necessary to use them within Perl({atan2, cos, exp, floor, fmod, frexp, isnan, log, modf, pow, sin, sqrt}l,strtold).These are not yet available with newlib, the Cygwin libc.

  • -Uuseithreads

    Define this symbol if you want not-threaded faster perl.

  • -Duselargefiles

    Cygwin uses 64-bit integers for internal size and position calculations,this will be correctly detected and defined by Configure.

  • -Dmksymlinks

    Use this to build perl outside of the source tree. Details can befound in the INSTALL document. This is the recommended way tobuild perl from sources.

Suspicious Warnings on Cygwin

You may see some messages during Configure that seem suspicious.

  • Win9x and d_eofnblk

    Win9x does not correctly report EOF with a non-blocking read on aclosed pipe. You will see the following messages:

    1.   But it also returns -1 to signal EOF, so be careful!
      2.  
    2.   WARNING: you can't distinguish between EOF and no data!
      3.  
    3.  
    4.   *** WHOA THERE!!! ***
      5.  
    5.   The recommended value for $d_eofnblk on this machine was "define"!
      6.  
    6.   Keep the recommended value? [y]
      7.

    At least for consistency with WinNT, you should keep the recommendedvalue.

  • Compiler/Preprocessor defines

    The following error occurs because of the Cygwin #define of_LONG_DOUBLE:

    1.   Guessing which symbols your C compiler and preprocessor define...
      2.  
    2.   try.c:<line#>: missing binary operator
      3.

    This failure does not seem to cause any problems. With older gccversions, "parse error" is reported instead of "missing binaryoperator".

MAKE ON CYGWIN

Simply run make and wait:

  1.   make 2>&1 | tee log.make
    2.

TEST ON CYGWIN

There are two steps to running the test suite:

  1.   make test 2>&1 | tee log.make-test
    2.  
  2.  
  3.   cd t; ./perl harness 2>&1 | tee ../log.harness
    4.

The same tests are run both times, but more information is provided whenrunning as ./perl harness.

Test results vary depending on your host system and your Cygwinconfiguration. If a test can pass in some Cygwin setup, it is alwaysattempted and explainable test failures are documented. It is possiblefor Perl to pass all the tests, but it is more likely that some testswill fail for one of the reasons listed below.

File Permissions on Cygwin

UNIX file permissions are based on sets of mode bits for{read,write,execute} for each {user,group,other}. By default Cygwinonly tracks the Win32 read-only attribute represented as the UNIX fileuser write bit (files are always readable, files are executable if theyhave a .{com,bat,exe} extension or begin with #!, directories arealways readable and executable). On WinNT with the ntea CYGWINsetting, the additional mode bits are stored as extended file attributes.On WinNT with the default ntsec CYGWIN setting, permissions use thestandard WinNT security descriptors and access control lists. Without one ofthese options, these tests will fail (listing not updated yet):

  1.   Failed Test   List of failed
    2.  
  2.   ------------------------------------
    3.  
  3.   io/fs.t   5, 7, 9-10
    4.  
  4.   lib/anydbm.t  2
    5.  
  5.   lib/db-btree.t 20
    6.  
  6.   lib/db-hash.t 16
    7.  
  7.   lib/db-recno.t 18
    8.  
  8.   lib/gdbm.t 2
    9.  
  9.   lib/ndbm.t 2
    10.  
  10.   lib/odbm.t 2
    11.  
  11.   lib/sdbm.t 2
    12.  
  12.   op/stat.t 9, 20 (.tmp not an executable extension)
    13.

NDBM_File and ODBM_File do not work on FAT filesystems

Do not use NDBM_File or ODBM_File on FAT filesystem. They can bebuilt on a FAT filesystem, but many tests will fail:

  1.  ../ext/NDBM_File/ndbm.t   13  3328 71   59  83.10%  1-2 4 16-71
    2.  
  2.  ../ext/ODBM_File/odbm.t  255 65280 ??   ??   %  ??
    3.  
  3.  ../lib/AnyDBM_File.t   2   512 12 2  16.67%  1 4
    4.  
  4.  ../lib/Memoize/t/errors.t  0   139 11 5  45.45%  7-11
    5.  
  5.  ../lib/Memoize/t/tie_ndbm.t   13  3328 4 4 100.00%  1-4
    6.  
  6.  run/fresh_perl.t  97 1   1.03%  91
    7.

If you intend to run only on FAT (or if using AnyDBM_File on FAT),run Configure with the -Ui_ndbm and -Ui_dbm options to preventNDBM_File and ODBM_File being built.

With NTFS (and no CYGWIN=nontsec), there should be no problems even ifperl was built on FAT.

fork() failures in io_* tests

A fork() failure may result in the following tests failing:

  1.   ext/IO/lib/IO/t/io_multihomed.t
    2.  
  2.   ext/IO/lib/IO/t/io_sock.t
    3.  
  3.   ext/IO/lib/IO/t/io_unix.t
    4.

See comment on fork in Miscellaneous below.

Specific features of the Cygwin port

Script Portability on Cygwin

Cygwin does an outstanding job of providing UNIX-like semantics on top ofWin32 systems. However, in addition to the items noted above, there aresome differences that you should know about. This is a very brief guideto portability, more information can be found in the Cygwin documentation.

  • Pathnames

    Cygwin pathnames are separated by forward (/) slashes, UniversalNaming Codes (//UNC) are also supported Since cygwin-1.7 non-POSIXpathnames are disencouraged. Names may contain all printablecharacters.

    File names are case insensitive, but case preserving. A pathname thatcontains a backslash or drive letter is a Win32 pathname, and notsubject to the translations applied to POSIX style pathnames, butcygwin will warn you, so better convert them to POSIX.

    For conversion we have Cygwin::win_to_posix_path() andCygwin::posix_to_win_path().

    Since cygwin-1.7 pathnames are UTF-8 encoded.

  • Text/Binary

    Since cywgin-1.7 textmounts are deprecated and stronlgy discouraged.

    When a file is opened it is in either text or binary mode. In text modea file is subject to CR/LF/Ctrl-Z translations. With Cygwin, the defaultmode for an open() is determined by the mode of the mount that underliesthe file. See Cygwin::is_binmount(). Perl provides a binmode() functionto set binary mode on files that otherwise would be treated as text.sysopen() with the O_TEXT flag sets text mode on files that otherwisewould be treated as binary:

    1.  sysopen(FOO, "bar", O_WRONLY|O_CREAT|O_TEXT)
      2.

    lseek(), tell() and sysseek() only work with files opened in binarymode.

    The text/binary issue is covered at length in the Cygwin documentation.

  • PerlIO

    PerlIO overrides the default Cygwin Text/Binary behaviour. A file willalways be treated as binary, regardless of the mode of the mount it liveson, just like it is in UNIX. So CR/LF translation needs to be requested ineither the open() call like this:

    1.   open(FH, ">:crlf", "out.txt");
      2.

    which will do conversion from LF to CR/LF on the output, or in theenvironment settings (add this to your .bashrc):

    1.   export PERLIO=crlf
      2.

    which will pull in the crlf PerlIO layer which does LF -> CRLF conversionon every output generated by perl.

  • .exe

    The Cygwin stat(), lstat() and readlink() functions make the .exeextension transparent by looking for foo.exe when you ask for foo(unless a foo also exists). Cygwin does not require a .exeextension, but gcc adds it automatically when building a program.However, when accessing an executable as a normal file (e.g., cpin a makefile) the .exe is not transparent. The install programincluded with Cygwin automatically appends a .exe when necessary.

  • Cygwin vs. Windows process ids

    Cygwin processes have their own pid, which is different from theunderlying windows pid. Most posix compliant Proc functions expectthe cygwin pid, but several Win32::Process functions expect thewinpid. E.g. $$ is the cygwin pid of /usr/bin/perl, which is notthe winpid. Use Cygwin::winpid_to_pid() and Cygwin::winpid_to_pid()to translate between them.

  • Cygwin vs. Windows errors

    Under Cygwin, $^E is the same as $!. When using Win32 API Functions,use Win32::GetLastError() to get the last Windows error.

  • rebase errors on fork or system

    Using fork() or system() out to another perl after loading multiple dllsmay result on a DLL baseaddress conflict. The internal cygwin errorlooks like like the following:

    1.   0 [main] perl 8916 child_info_fork::abort: data segment start: parent
      2.  
    2.   (0xC1A000) != child(0xA6A000)
      3.

    or:

    1.   183 [main] perl 3588 C:\cygwin\bin\perl.exe: *** fatal error - unable to remap C:\cygwin\bin\cygsvn_subr-1-0.dll to same address as parent(0x6FB30000) != 0x6FE60000
      2.  
    2.   46 [main] perl 3488 fork: child 3588 - died waiting for dll loading, errno11
      3.

    See http://cygwin.com/faq/faq-nochunks.html#faq.using.fixing-fork-failuresIt helps if not too many DLLs are loaded in memory so the available address space is larger,e.g. stopping the MS Internet Explorer might help.

    Use the perlrebase or rebase utilities to resolve the conflicting dll addresses.The rebase package is included in the Cygwin setup. Use setup.exefrom http://www.cygwin.com/setup.exe to install it.

    1. kill all perl processes and run perlrebase or

    2. kill all cygwin processes and services, start dash from cmd.exe and run rebaseall.

  • chown()

    On WinNT chown() can change a file's user and group IDs. On Win9x chown()is a no-op, although this is appropriate since there is no security model.

  • Miscellaneous

    File locking using the F_GETLK command to fcntl() is a stub thatreturns ENOSYS.

    Win9x can not rename() an open file (although WinNT can).

    The Cygwin chroot() implementation has holes (it can not restrict fileaccess by native Win32 programs).

    Inplace editing perl -i of files doesn't work without doing a backupof the file being edited perl -i.bak because of windowish restrictions,therefore Perl adds the suffix .bak automatically if you use perl -iwithout specifying a backup extension.

Prebuilt methods:

  • Cwd::cwd

    Returns the current working directory.

  • Cygwin::pid_to_winpid

    Translates a cygwin pid to the corresponding Windows pid (which may ormay not be the same).

  • Cygwin::winpid_to_pid

    Translates a Windows pid to the corresponding cygwin pid (if any).

  • Cygwin::win_to_posix_path

    Translates a Windows path to the corresponding cygwin path respectingthe current mount points. With a second non-null argument returns anabsolute path. Double-byte characters will not be translated.

  • Cygwin::posix_to_win_path

    Translates a cygwin path to the corresponding cygwin path respectingthe current mount points. With a second non-null argument returns anabsolute path. Double-byte characters will not be translated.

  • Cygwin::mount_table()

    Returns an array of [mnt_dir, mnt_fsname, mnt_type, mnt_opts].

    1.   perl -e 'for $i (Cygwin::mount_table) {print join(" ",@$i),"\n";}'
      2.  
    2.   /bin c:\cygwin\bin system binmode,cygexec
      3.  
    3.   /usr/bin c:\cygwin\bin system binmode
      4.  
    4.   /usr/lib c:\cygwin\lib system binmode
      5.  
    5.   / c:\cygwin system binmode
      6.  
    6.   /cygdrive/c c: system binmode,noumount
      7.  
    7.   /cygdrive/d d: system binmode,noumount
      8.  
    8.   /cygdrive/e e: system binmode,noumount
      9.
  • Cygwin::mount_flags

    Returns the mount type and flags for a specified mount point.A comma-separated string of mntent->mnt_type (always"system" or "user"), then the mntent->mnt_opts, wherethe first is always "binmode" or "textmode".

    1.   system|user,binmode|textmode,exec,cygexec,cygdrive,mixed,
      2.  
    2.   notexec,managed,nosuid,devfs,proc,noumount
      3.

    If the argument is "/cygdrive", then just the volume mount settings,and the cygdrive mount prefix are returned.

    User mounts override system mounts.

    1.   $ perl -e 'print Cygwin::mount_flags "/usr/bin"'
      2.  
    2.   system,binmode,cygexec
      3.  
    3.   $ perl -e 'print Cygwin::mount_flags "/cygdrive"'
      4.  
    4.   binmode,cygdrive,/cygdrive
      5.
  • Cygwin::is_binmount

    Returns true if the given cygwin path is binary mounted, false if thepath is mounted in textmode.

  • Cygwin::sync_winenv

    Cygwin does not initialize all original Win32 environment variables.See the bottom of this page http://cygwin.com/cygwin-ug-net/setup-env.htmlfor "Restricted Win32 environment".

    Certain Win32 programs called from cygwin programs might need some environmentvariable, such as e.g. ADODB needs %COMMONPROGRAMFILES%.Call Cygwin::sync_winenv() to copy all Win32 environment variables to yourprocess and note that cygwin will warn on every encounter of non-POSIX paths.

INSTALL PERL ON CYGWIN

This will install Perl, including man pages.

  1.   make install 2>&1 | tee log.make-install
    2.

NOTE: If STDERR is redirected make install will not promptyou to install perl into /usr/bin.

You may need to be Administrator to run make install. If youare not, you must have write access to the directories in question.

Information on installing the Perl documentation in HTML format can befound in the INSTALL document.

MANIFEST ON CYGWIN

These are the files in the Perl release that contain references to Cygwin.These very brief notes attempt to explain the reason for all conditionalcode. Hopefully, keeping this up to date will allow the Cygwin port tobe kept as clean as possible.

  • Documentation
    1.   INSTALL README.cygwin README.win32 MANIFEST
      2.  
    2.   pod/perl.pod pod/perlport.pod pod/perlfaq3.pod
      3.  
    3.   pod/perldelta.pod pod/perl5004delta.pod pod/perl56delta.pod
      4.  
    4.   pod/perl561delta.pod pod/perl570delta.pod pod/perl572delta.pod
      5.  
    5.   pod/perl573delta.pod pod/perl58delta.pod pod/perl581delta.pod
      6.  
    6.   pod/perl590delta.pod pod/perlhist.pod pod/perlmodlib.pod
      7.  
    7.   pod/perltoc.pod Porting/Glossary pod/perlgit.pod
      8.  
    8.   Porting/checkAUTHORS.pl
      9.  
    9.   dist/Cwd/Changes ext/Compress-Raw-Zlib/Changes
      10.  
    10.   ext/Compress-Raw-Zlib/README ext/Compress-Zlib/Changes
      11.  
    11.   ext/DB_File/Changes ext/Encode/Changes ext/Sys-Syslog/Changes
      12.  
    12.   ext/Time-HiRes/Changes ext/Win32API-File/Changes lib/CGI/Changes
      13.  
    13.   lib/ExtUtils/CBuilder/Changes lib/ExtUtils/Changes lib/ExtUtils/NOTES
      14.  
    14.   lib/ExtUtils/PATCHING lib/ExtUtils/README lib/Module/Build/Changes
      15.  
    15.   lib/Net/Ping/Changes lib/Test/Harness/Changes
      16.  
    16.   lib/Term/ANSIColor/ChangeLog lib/Term/ANSIColor/README README.symbian
      17.  
    17.   symbian/TODO
      18.
  • Build, Configure, Make, Install
    1.   cygwin/Makefile.SHs
      2.  
    2.   ext/IPC/SysV/hints/cygwin.pl
      3.  
    3.   ext/NDBM_File/hints/cygwin.pl
      4.  
    4.   ext/ODBM_File/hints/cygwin.pl
      5.  
    5.   hints/cygwin.sh
      6.  
    6.   Configure - help finding hints from uname,
      7.  
    7.   shared libperl required for dynamic loading
      8.  
    8.   Makefile.SH Cross/Makefile-cross-SH
      9.  
    9.  - linklibperl
      10.  
    10.   Porting/patchls   - cygwin in port list
      11.  
    11.   installman - man pages with :: translated to .
      12.  
    12.   installperl   - install dll, install to 'pods'
      13.  
    13.   makedepend.SH - uwinfix
      14.  
    14.   regen_lib.pl  - file permissions
      15.  
    15.  
    16.   NetWare/Makefile
      17.  
    17.   plan9/mkfile
      18.  
    18.   symbian/sanity.pl symbian/sisify.pl
      19.  
    19.   hints/uwin.sh
      20.  
    20.   vms/descrip_mms.template
      21.  
    21.   win32/Makefile win32/makefile.mk
      22.
  • Tests
    1.   t/io/fs.t - no file mode checks if not ntsec
      2.  
    2.   skip rename() check when not check_case:relaxed
      3.  
    3.   t/io/tell.t   - binmode
      4.  
    4.   t/lib/cygwin.t - builtin cygwin function tests
      5.  
    5.   t/op/groups.t - basegroup has ID = 0
      6.  
    6.   t/op/magic.t  - $^X/symlink WORKAROUND, s/.exe//
      7.  
    7.   t/op/stat.t   - no /dev, skip Win32 ftCreationTime quirk
      8.  
    8.   (cache manager sometimes preserves ctime of file
      9.  
    9.   previously created and deleted), no -u (setuid)
      10.  
    10.   t/op/taint.t  - can't use empty path under Cygwin Perl
      11.  
    11.   t/op/time.t   - no tzset()
      12.
  • Compiled Perl Source
    1.   EXTERN.h  - __declspec(dllimport)
      2.  
    2.   XSUB.h - __declspec(dllexport)
      3.  
    3.   cygwin/cygwin.c   - os_extras (getcwd, spawn, and several Cygwin:: functions)
      4.  
    4.   perl.c - os_extras, -i.bak
      5.  
    5.   perl.h - binmode
      6.  
    6.   doio.c - win9x can not rename a file when it is open
      7.  
    7.   pp_sys.c  - do not define h_errno, init _pwent_struct.pw_comment
      8.  
    8.   util.c - use setenv
      9.  
    9.   util.h - PERL_FILE_IS_ABSOLUTE macro
      10.  
    10.   pp.c  - Comment about Posix vs IEEE math under Cygwin
      11.  
    11.   perlio.c  - CR/LF mode
      12.  
    12.   perliol.c - Comment about EXTCONST under Cygwin
      13.
  • Compiled Module Source
    1.   ext/Compress-Raw-Zlib/Makefile.PL
      2.  
    2.  - Can't install via CPAN shell under Cygwin
      3.  
    3.   ext/Compress-Raw-Zlib/zlib-src/zutil.h
      4.  
    4.  - Cygwin is Unix-like and has vsnprintf
      5.  
    5.   ext/Errno/Errno_pm.PL - Special handling for Win32 Perl under Cygwin
      6.  
    6.   ext/POSIX/POSIX.xs - tzname defined externally
      7.  
    7.   ext/SDBM_File/sdbm/pair.c
      8.  
    8.  - EXTCONST needs to be redefined from EXTERN.h
      9.  
    9.   ext/SDBM_File/sdbm/sdbm.c
      10.  
    10.  - binary open
      11.  
    11.   ext/Sys/Syslog/Syslog.xs
      12.  
    12.  - Cygwin has syslog.h
      13.  
    13.   ext/Sys/Syslog/win32/compile.pl
      14.  
    14.  - Convert paths to Windows paths
      15.  
    15.   ext/Time-HiRes/HiRes.xs
      16.  
    16.  - Various timers not available
      17.  
    17.   ext/Time-HiRes/Makefile.PL
      18.  
    18.  - Find w32api/windows.h
      19.  
    19.   ext/Win32/Makefile.PL - Use various libraries under Cygwin
      20.  
    20.   ext/Win32/Win32.xs - Child dir and child env under Cygwin
      21.  
    21.   ext/Win32API-File/File.xs
      22.  
    22.  - _open_osfhandle not implemented under Cygwin
      23.  
    23.   ext/Win32CORE/Win32CORE.c
      24.  
    24.  - __declspec(dllexport)
      25.
  • Perl Modules/Scripts
    1.   ext/B/t/OptreeCheck.pm - Comment about stderr/stdout order under Cygwin
      2.  
    2.   ext/Digest-SHA/bin/shasum
      3.  
    3.  - Use binary mode under Cygwin
      4.  
    4.   ext/Sys/Syslog/win32/Win32.pm
      5.  
    5.  - Convert paths to Windows paths
      6.  
    6.   ext/Time-HiRes/HiRes.pm
      7.  
    7.  - Comment about various timers not available
      8.  
    8.   ext/Win32API-File/File.pm
      9.  
    9.  - _open_osfhandle not implemented under Cygwin
      10.  
    10.   ext/Win32CORE/Win32CORE.pm
      11.  
    11.  - History of Win32CORE under Cygwin
      12.  
    12.   lib/CGI.pm - binmode and path separator
      13.  
    13.   lib/CPANPLUS/Dist/MM.pm - Commented out code that fails under Win32/Cygwin
      14.  
    14.   lib/CPANPLUS/Internals/Constants/Report.pm
      15.  
    15.  - OS classifications
      16.  
    16.   lib/CPANPLUS/Internals/Constants.pm
      17.  
    17.  - Constants for Cygwin
      18.  
    18.   lib/CPANPLUS/Internals/Report.pm
      19.  
    19.  - Example of Cygwin report
      20.  
    20.   lib/CPANPLUS/Module.pm
      21.  
    21.  - Abort if running on old Cygwin version
      22.  
    22.   lib/Cwd.pm - hook to internal Cwd::cwd
      23.  
    23.   lib/ExtUtils/CBuilder/Platform/cygwin.pm
      24.  
    24.  - use gcc for ld, and link to libperl.dll.a
      25.  
    25.   lib/ExtUtils/CBuilder.pm
      26.  
    26.  - Cygwin is Unix-like
      27.  
    27.   lib/ExtUtils/Install.pm - Install and rename issues under Cygwin
      28.  
    28.   lib/ExtUtils/MM.pm - OS classifications
      29.  
    29.   lib/ExtUtils/MM_Any.pm - Example for Cygwin
      30.  
    30.   lib/ExtUtils/MakeMaker.pm
      31.  
    31.  - require MM_Cygwin.pm
      32.  
    32.   lib/ExtUtils/MM_Cygwin.pm
      33.  
    33.  - canonpath, cflags, manifypods, perl_archive
      34.  
    34.   lib/File/Fetch.pm - Comment about quotes using a Cygwin example
      35.  
    35.   lib/File/Find.pm  - on remote drives stat() always sets st_nlink to 1
      36.  
    36.   lib/File/Spec/Cygwin.pm - case_tolerant
      37.  
    37.   lib/File/Spec/Unix.pm - preserve //unc
      38.  
    38.   lib/File/Spec/Win32.pm - References a message on cygwin.com
      39.  
    39.   lib/File/Spec.pm  - Pulls in lib/File/Spec/Cygwin.pm
      40.  
    40.   lib/File/Temp.pm  - no directory sticky bit
      41.  
    41.   lib/Module/Build/Compat.pm - Comment references 'make' under Cygwin
      42.  
    42.   lib/Module/Build/Platform/cygwin.pm
      43.  
    43.  - Use '.' for man page separator
      44.  
    44.   lib/Module/Build.pm   - Cygwin is Unix-like
      45.  
    45.   lib/Module/CoreList.pm - List of all module files and versions
      46.  
    46.   lib/Net/Domain.pm - No domainname command under Cygwin
      47.  
    47.   lib/Net/Netrc.pm  - Bypass using stat() under Cygwin
      48.  
    48.   lib/Net/Ping.pm   - ECONREFUSED is EAGAIN under Cygwin
      49.  
    49.   lib/Pod/Find.pm   - Set 'pods' dir
      50.  
    50.   lib/Pod/Perldoc/ToMan.pm - '-c' switch for pod2man
      51.  
    51.   lib/Pod/Perldoc.pm - Use 'less' pager, and use .exe extension
      52.  
    52.   lib/Term/ANSIColor.pm - Cygwin terminal info
      53.  
    53.   lib/perl5db.pl - use stdin not /dev/tty
      54.  
    54.   utils/perlbug.PL  - Add CYGWIN environment variable to report
      55.
  • Perl Module Tests
    1.   dist/Cwd/t/cwd.t
      2.  
    2.   ext/Compress-Zlib/t/14gzopen.t
      3.  
    3.   ext/DB_File/t/db-btree.t
      4.  
    4.   ext/DB_File/t/db-hash.t
      5.  
    5.   ext/DB_File/t/db-recno.t
      6.  
    6.   ext/DynaLoader/t/DynaLoader.t
      7.  
    7.   ext/File-Glob/t/basic.t
      8.  
    8.   ext/GDBM_File/t/gdbm.t
      9.  
    9.   ext/POSIX/t/sysconf.t
      10.  
    10.   ext/POSIX/t/time.t
      11.  
    11.   ext/SDBM_File/t/sdbm.t
      12.  
    12.   ext/Sys/Syslog/t/syslog.t
      13.  
    13.   ext/Time-HiRes/t/HiRes.t
      14.  
    14.   ext/Win32/t/Unicode.t
      15.  
    15.   ext/Win32API-File/t/file.t
      16.  
    16.   ext/Win32CORE/t/win32core.t
      17.  
    17.   lib/AnyDBM_File.t
      18.  
    18.   lib/Archive/Extract/t/01_Archive-Extract.t
      19.  
    19.   lib/Archive/Tar/t/02_methods.t
      20.  
    20.   lib/CPANPLUS/t/05_CPANPLUS-Internals-Fetch.t
      21.  
    21.   lib/CPANPLUS/t/20_CPANPLUS-Dist-MM.t
      22.  
    22.   lib/ExtUtils/t/Embed.t
      23.  
    23.   lib/ExtUtils/t/eu_command.t
      24.  
    24.   lib/ExtUtils/t/MM_Cygwin.t
      25.  
    25.   lib/ExtUtils/t/MM_Unix.t
      26.  
    26.   lib/File/Compare.t
      27.  
    27.   lib/File/Copy.t
      28.  
    28.   lib/File/Find/t/find.t
      29.  
    29.   lib/File/Path.t
      30.  
    30.   lib/File/Spec/t/crossplatform.t
      31.  
    31.   lib/File/Spec/t/Spec.t
      32.  
    32.   lib/Module/Build/t/destinations.t
      33.  
    33.   lib/Net/hostent.t
      34.  
    34.   lib/Net/Ping/t/110_icmp_inst.t
      35.  
    35.   lib/Net/Ping/t/500_ping_icmp.t
      36.  
    36.   lib/Net/t/netrc.t
      37.  
    37.   lib/Pod/Simple/t/perlcyg.pod
      38.  
    38.   lib/Pod/Simple/t/perlcygo.txt
      39.  
    39.   lib/Pod/Simple/t/perlfaq.pod
      40.  
    40.   lib/Pod/Simple/t/perlfaqo.txt
      41.  
    41.   lib/User/grent.t
      42.  
    42.   lib/User/pwent.t
      43.

BUGS ON CYGWIN

Support for swapping real and effective user and group IDs is incomplete.On WinNT Cygwin provides setuid(), seteuid(), setgid() and setegid().However, additional Cygwin calls for manipulating WinNT access tokensand security contexts are required.

AUTHORS

Charles Wilson <[email protected]>,Eric Fifer <[email protected]>,alexander smishlajev <[email protected]>,Steven Morlock <[email protected]>,Sebastien Barre <[email protected]>,Teun Burgers <[email protected]>,Gerrit P. Haase <[email protected]>,Reini Urban <[email protected]>,Jan Dubois <[email protected]>,Jerry D. Hedden <[email protected]>.

HISTORY

Last updated: 2012-02-08

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