http://cygutils.netpedia.net/
-=head1 PREREQUISITES
+=head1 PREREQUISITES FOR COMPILING PERL ON CYGWIN
=head2 Cygwin = GNU+Cygnus+Windows (Don't leave UNIX without it)
system calls and environment these programs expect. More information
about this project can be found at:
- http://sourceware.cygnus.com/cygwin/
+ http://www.cygwin.com/
A recent net or commercial release of Cygwin is required.
-At the time this document was written, Cygwin 1.1.1 was current.
+At the time this document was last updated, Cygwin 1.1.5 was current.
B<NOTE:> At this point, minimal effort has been made to provide
compatibility with old (beta) Cygwin releases. The focus has been to
provide a high quality release and not worry about working around old
-Cygwin bugs. If you wish to use Perl with Cygwin B20.1 or earlier,
-consider using perl5.005_03, which is available in source and binary
-form at C<http://cygutils.netpedia.net/> or on the Cygwin CD. If there
-is significant demand, a patch kit can be developed to port back to
-earlier Cygwin versions.
+bugs. If you wish to use Perl with Cygwin B20.1 or earlier, consider
+using perl5.005_03, which is available in source and binary form at
+C<http://cygutils.netpedia.net/>. If there is significant demand,
+a patch kit can be developed to port back to earlier Cygwin versions.
=head2 Cygwin Configuration
Perl usage.
B<NOTE:> The binaries that are built will run on all Win32 versions.
-They do not depend on your host system (Win9x, WinNT) or your Cygwin
-configuration (I<ntea>, I<ntsec>, binary/text mounts). The only
-dependencies come from hard-coded pathnames like C</usr/local>. However,
-your host system and Cygwin configuration will affect Perl's runtime
-behavior (see L</"TEST">).
+They do not depend on your host system (Win9x/WinME, WinNT/Win2K)
+or your Cygwin configuration (I<ntea>, I<ntsec>, binary/text mounts).
+The only dependencies come from hard-coded pathnames like C</usr/local>.
+However, your host system and Cygwin configuration will affect Perl's
+runtime behavior (see L</"TEST">).
=over 4
On WinNT with either the I<ntea> or I<ntsec> C<CYGWIN> settings, directory
and file permissions may not be set correctly. Since the build process
-creates files and directories, to be safe you may want to run a `C<chmod
+creates directories and files, to be safe you may want to run a `C<chmod
-R +w *>' on the entire Perl source tree.
Also, it is a well known WinNT "feature" that files created by a login
=back
-=head1 CONFIGURE
+=head1 CONFIGURE PERL ON CYGWIN
The default options gathered by Configure with the assistance of
F<hints/cygwin.sh> will build a Perl that supports dynamic loading
If you are willing to accept all the defaults run Configure with B<-de>.
However, several useful customizations are available.
-=head2 Strip Binaries
+=head2 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 the
or you can edit F<hints/cygwin.sh> and uncomment the relevant variables
near the end of the file.
-=head2 Optional Libraries
+=head2 Optional Libraries for Perl on Cygwin
Several Perl functions and modules depend on the existence of
some optional libraries. Configure will find them if they are
=item * C<-lcrypt>
-The crypt libraries in GNU libc have been ported to Cygwin.
+The crypt package distributed with Cygwin is a Linux compatible 56-bit
+DES crypt port by Corinna Vinschen.
+
+Alternatively, the crypt libraries in GNU libc have been ported to Cygwin.
The DES based Ultra Fast Crypt port was done by Alexey Truhan:
also makes C<NDBM_File> and C<ODBM_File> possible (although they add
little extra value).
+NOTE: The ndbm/dbm emulations only completely work on NTFS partitions.
+
=item * C<-ldb> (C<use DB_File>)
BerkeleyDB is available for Cygwin. Some details can be found in
F<ext/DB_File/DB_File.pm>.
+NOTE: The BerkeleyDB library only completely works on NTFS partitions.
+
=item * C<-lcygipc> (C<use IPC::SysV>)
A port of SysV IPC is available for Cygwin.
=back
-=head2 Configure-time Options
+=head2 Configure-time Options for Perl on Cygwin
The F<INSTALL> document describes several Configure-time options. Some of
these will work with Cygwin, others are not yet possible. Also, some of
I<gcc> supports long doubles (12 bytes). However, several additional
long double math functions are necessary to use them within Perl
-(I<{atan2,cos,exp,floor,fmod,frexp,log,modf,pow,sin,sqrt}l,strtold>).
+(I<{atan2,cos,exp,floor,fmod,frexp,isnan,log,modf,pow,sin,sqrt}l,strtold>).
These are B<not> yet available with Cygwin.
=item * C<-Dusethreads>
=back
-=head2 Suspicious Warnings
+=head2 Suspicious Warnings on Cygwin
You may see some messages during Configure that seem suspicious.
=over 4
-=item * Whoa There
-
-Cygwin does not yet implement chroot() functionality, but has a stub
-function that returns C<ENOSYS>. You will see a message when Configure
-detects that its guess conflicts with the hint file.
-
- *** WHOA THERE!!! ***
- The recommended value for $d_chroot on this machine was "undef"!
- Keep the recommended value? [y]
-
-You should keep the recommended value.
-
=item * I<dlsym()>
I<ld2> is needed to build dynamic libraries, but it does not exist
At least for consistency with WinNT, you should keep the recommended
value.
-=item * Checking how std your stdio is...
-
-Configure reports:
-
- Your stdio doesn't appear very std.
-
-This is correct.
-
=item * Compiler/Preprocessor defines
The following error occurs because of the Cygwin C<#define> of
C<_LONG_DOUBLE>:
Guessing which symbols your C compiler and preprocessor define...
- try.c:3847: parse error
+ try.c:<line#>: parse error
This failure does not seem to cause any problems.
=back
-=head1 MAKE
+=head1 MAKE ON CYGWIN
Simply run I<make> and wait:
make 2>&1 | tee log.make
-=head2 Warnings
+=head2 Warnings on Cygwin
Warnings like these are normal:
warning: overriding commands for target <file>
warning: ignoring old commands for target <file>
- Warning: no export definition file provided
- dllwrap will create one, but may not be what you want
+ dllwrap: no export definition file provided
+ dllwrap: creating one, but that may not be what you want
-=head2 ld2
+=head2 ld2 on Cygwin
During `C<make>', I<ld2> will be created and installed in your $installbin
directory (where you said to put public executables). It does not
just manually copy I<ld2> from the source directory to somewhere in
your C<PATH>.
-=head1 TEST
+=head1 TEST ON CYGWIN
There are two steps to running the test suite:
Test results vary depending on your host system and your Cygwin
configuration. If a test can pass in some Cygwin setup, it is always
attempted and explainable test failures are documented. It is possible
-that Perl will pass all the tests, but it is more likely that some tests
-will fail for one of these reasons.
+for Perl to pass all the tests, but it is more likely that some tests
+will fail for one of the reasons listed below.
-=head2 File Permissions
+=head2 File Permissions on Cygwin
UNIX file permissions are based on sets of mode bits for
{read,write,execute} for each {user,group,other}. By default Cygwin
lib/sdbm.t 2
op/stat.t 9, 20 (.tmp not an executable extension)
-=head2 Hard Links
+=head2 Hard Links on Cygwin
FAT partitions do not support hard links (whereas NTFS does), in which
-case Cygwin implements link() by copying the file. These tests will fail:
+case Cygwin implements link() by copying the file. On remote (network)
+drives Cygwin's stat() always sets C<st_nlink> to 1, so the link count
+for remote directories and files is not available. In either case,
+these tests will fail:
Failed Test List of failed
------------------------------------
io/fs.t 4
op/stat.t 3
-=head2 Filetime Granularity
+=head2 Filetime Granularity on Cygwin
On FAT partitions the filetime granularity is 2 seconds. The following
test will fail:
------------------------------------
io/fs.t 18
-=head2 Tainting Checks
+=head2 Tainting Checks on Cygwin
When Perl is running in taint mode, C<$ENV{PATH}> is considered tainted
and not used, so DLLs not in the default system directories will not
A required .DLL file, CYGWIN1.DLL, was not found
WinNT
- perl.exe or sh.exe - Unable to Locate DLL
+ perl.exe - Unable to Locate DLL
The dynamic link library cygwin1.dll could not be found in the
specified path ...
Alternatively, you can copy F<cygwin1.dll> into the directory where the
tests run:
- cp `type -p cygwin1.dll` t
+ cp /bin/cygwin1.dll t
or one of the Windows system directories (although, this is B<not>
recommended).
-=head2 /etc/group
+=head2 /etc/group on Cygwin
Cygwin does not require F</etc/group>, in which case the F<op/grent.t>
test will be skipped. The check performed by F<op/grent.t> expects to
------------------------------------
op/grent.t 1
-=head2 Script Portability
+=head2 Script Portability on Cygwin
Cygwin does an outstanding job of providing UNIX-like semantics on top of
Win32 systems. However, in addition to the items noted above, there are
: * ? " < > |
-File names are case insensitive, but case preserving.
+File names are case insensitive, but case preserving. A pathname that
+contains a backslash or drive letter is a Win32 pathname (and not subject
+to the translations applied to POSIX style pathnames).
=item * Text/Binary
=item * F<.exe>
-The Cygwin stat() makes the F<.exe> extension transparent by looking for
-F<foo.exe> when you ask for F<foo> (unless a F<foo> also exists). Cygwin
-does not require a F<.exe> extension, but I<gcc> adds it automatically
-when building a program. However, when accessing an executable as a
-normal file (e.g., I<cp> in a makefile) the F<.exe> is not transparent.
-The I<install> included with Cygwin automatically appends a F<.exe>
-when necessary.
+The Cygwin stat(), lstat() and readlink() functions make the F<.exe>
+extension transparent by looking for F<foo.exe> when you ask for F<foo>
+(unless a F<foo> also exists). Cygwin does not require a F<.exe>
+extension, but I<gcc> adds it automatically when building a program.
+However, when accessing an executable as a normal file (e.g., I<cp>
+in a makefile) the F<.exe> is not transparent. The I<install> included
+with Cygwin automatically appends a F<.exe> when necessary.
=item * chown()
Win9x can not rename() an open file (although WinNT can).
+The Cygwin chroot() implementation has holes (it can not restrict file
+access by native Win32 programs).
+
=back
-=head1 INSTALL
+=head1 INSTALL PERL ON CYGWIN
This will install Perl, including I<man> pages.
Information on installing the Perl documentation in HTML format can be
found in the F<INSTALL> document.
-=head1 MANIFEST
+=head1 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 conditional
=item Documentation
- INSTALL README.cygwin
- Changes Changes5.005 Changes5.004
- AUTHORS MAINTAIN MANIFEST README.win32
- pod/perl.pod pod/perlfaq3.pod pod/perlhist.pod pod/perlmodlib.pod
- pod/perlport.pod pod/perltoc.pod pod/perldelta.pod pod/perl5004delta.pod
+ INSTALL README.cygwin README.win32 MANIFEST
+ Changes Changes5.005 Changes5.004 Changes5.6
+ pod/perl.pod pod/perlport.pod pod/perlfaq3.pod
+ pod/perldelta.pod pod/perl5004delta.pod pod/perl56delta.pod
+ pod/perlhist.pod pod/perlmodlib.pod pod/buildtoc.PL pod/perltoc.pod
=item Build, Configure, Make, Install
=item Tests
t/io/tell.t - binmode
+ t/lib/b.t - ignore Cwd from os_extras
t/lib/glob-basic.t - Win32 directory list access differs from read mode
t/op/magic.t - $^X/symlink WORKAROUND, s/.exe//
t/op/stat.t - no /dev, skip Win32 ftCreationTime quirk
perl.h - binmode
doio.c - win9x can not rename a file when it is open
pp_sys.c - do not define h_errno, pp_system with spawn
- mg.c - environ WORKAROUND
- unixish.h - environ WORKAROUND
- util.c - environ WORKAROUND
+ util.c - use setenv
=item Compiled Module Source
- require MM_Cygwin.pm
lib/ExtUtils/MM_Cygwin.pm
- canonpath, cflags, manifypods, perl_archive
+ lib/File/Find.pm - on remote drives stat() always sets st_nlink to 1
lib/File/Spec/Unix.pm - preserve //unc
+ lib/File/Temp.pm - no directory sticky bit
lib/perl5db.pl - use stdin not /dev/tty
- utils/perlcc.PL - DynaLoader.a in compile, -DUSEIMPORTLIB
utils/perldoc.PL - version comment
=back
-=head1 BUGS
+=head1 BUGS ON CYGWIN
When I<make> starts, it warns about overriding commands for F<perlmain.o>.
-`C<make clean>' does not remove library F<.def> and F<.exe.stackdump>
+`C<make clean>' does not remove library F<.def> or F<.exe.stackdump>
files.
The I<ld2> script contains references to the source directory. You should
change these to $installbin after `C<make install>'.
+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 tokens
+and security contexts are required.
+
+When building DLLs, `C<dllwrap --export-all-symbols>' is used to export
+global symbols. It might be better to generate an explicit F<.def> file
+(see F<makedef.pl>). Also, DLLs can now be build with `C<gcc -shared>'.
+
=head1 AUTHORS
Charles Wilson <cwilson@ece.gatech.edu>,
-Eric Fifer <efifer@sanwaint.com>,
+Eric Fifer <egf7@columbia.edu>,
alexander smishlajev <als@turnhere.com>,
Steven Morlock <newspost@morlock.net>,
Sebastien Barre <Sebastien.Barre@utc.fr>,
=head1 HISTORY
-Last updated: 5 May 2000
+Last updated: 9 November 2000
https://perl5.git.perl.org / perl5.git / blobdiff