X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=README.cygwin;h=2a95ab97c33c69f1dd48575943e1214d9ea7ac39;hb=aaa68c4a88ea4a62f62819baf4cacc0ca679c5fa;hp=ab60a58a0abadbae7424d23fdf4b5d35c2a0e176;hpb=f8dbba82d8d4daa10a152121c099318e33dde811;p=p5sagit%2Fp5-mst-13.2.git diff --git a/README.cygwin b/README.cygwin index ab60a58..2a95ab9 100644 --- a/README.cygwin +++ b/README.cygwin @@ -13,7 +13,7 @@ on Cygwin. This document also describes features of Cygwin that will affect how Perl behaves at runtime. B There are pre-built Perl packages available for Cygwin and a -version of Perl is provided on the Cygwin CD. If you have no need to +version of Perl is provided on the Cygwin CD. If you do not need to customize the configuration, consider using one of these packages: http://cygutils.netpedia.net/ @@ -31,27 +31,16 @@ about this project can be found at: A recent net or commercial release of Cygwin is required. -At the time this document was written, the port required recent -development snapshots that were expected to stabilize early in 2000 and -be released to the net as B21 and commercially as v1.1. +At the time this document was last updated, Cygwin 1.1.2 was current. B 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 either perl5.005_03 or perl5.005_62, which are available -in source and binary form at C or on the -Cygwin CD. If there is significant demand, a patch kit can be developed -to port back to earlier Cygwin versions. - -=head2 Compiler - -A recent net or commercial release of I is required. - -At the time this document was written, I was current and -could be downloaded from: - - ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/cygwin/gcc-2.95.2/ +consider using perl5.005_03, which is available in source and binary +form at C or on the Cygwin CD. If there +is significant demand, a patch kit can be developed to port back to +earlier Cygwin versions. =head2 Cygwin Configuration @@ -62,13 +51,9 @@ Perl usage. B 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, I, binary/text mounts). The only -dependencies come from hardcoded pathnames like C. However, +dependencies come from hard-coded pathnames like C. However, your host system and Cygwin configuration will affect Perl's runtime -behavior (see L). Some regression tests may fail in different -ways depending on your setup. For now, the test suite does not skip -tests that do not make sense given a particular setup. If a test can -pass in some Cygwin setup, it is left in and explainable test failures -are documented. +behavior (see L). =over 4 @@ -78,23 +63,10 @@ Set the C environment variable so that Configure finds the Cygwin versions of programs. Any Windows directories should be removed or moved to the end of your C. -=item * F - -There should be an instance of I in F (or F). -Configure tests C<#!/bin/cat> and if it is not found, you will see -the error: - - Configure: ./try: No such file or directory - -=item * F - -If you do not have a F directory, Configure will B prompt -you to install I into F. - =item * I If you do not have I (which is part of the I package), -Configure will B prompt you to install man pages. +Configure will B prompt you to install I pages. =item * Permissions @@ -123,7 +95,7 @@ This will run Configure and keep a record: ./Configure 2>&1 | tee log.configure -If you are willing to accept all the defaults add a B<-d> option. +If you are willing to accept all the defaults run Configure with B<-de>. However, several useful customizations are available. =head2 Strip Binaries @@ -134,7 +106,7 @@ binaries to be stripped, you can either add a B<-s> option when Configure prompts you, Any additional ld flags (NOT including libraries)? [none] -s - Any special flags to pass to gcc to use dynamic loading? [none] -s + Any special flags to pass to gcc to use dynamic linking? [none] -s Any special flags to pass to ld2 to create a dynamically loaded library? [none] -s @@ -155,20 +127,21 @@ C. The crypt libraries in GNU libc have been ported to Cygwin. -The DES based Ultra Fast Crypt port was done by Alexey Truhan +The DES based Ultra Fast Crypt port was done by Alexey Truhan: - http://dome.weeg.uiowa.edu/pub/domestic/sos/cw32crypt-dist-0.tgz + ftp://ftp.franken.de/pub/win32/develop/gnuwin32/cygwin/porters/Okhapkin_Sergey/cw32crypt-dist-0.tgz NOTE: There are various export restrictions on DES implementations, see the glibc README for more details. The MD5 port was done by Andy Piper: - http://dome.weeg.uiowa.edu/pub/domestic/sos/libcrypt.tgz + ftp://ftp.franken.de/pub/win32/develop/gnuwin32/cygwin/porters/Okhapkin_Sergey/libcrypt.tgz -More information can also be found at: +There is also a Linux compatible 56 bit DES crypt port by Corinna +Vinschen: - http://miracle.geol.msu.ru/sos/ + ftp://ftp.franken.de/pub/win32/develop/gnuwin32/cygwin/porters/Vinschen_Corinna/V1.1.1/crypt-1.0.tar.gz =item * C<-lgdbm> (C) @@ -183,37 +156,36 @@ F. =item * C<-lcygipc> (C) -A port of SysV IPC is available for Cygwin: - - http://www.multione.capgemini.fr/tools/pack_ipc/ +A port of SysV IPC is available for Cygwin. -The 1.3 release does not include ftok(), but code for ftok() can be -borrowed from glibc. +NOTE: This has B been extensively tested. In particular, +C is undefined because it fails a Configure test +and on Win9x the I functions seem to hang. It also creates +a compile time dependency because F includes F<> +and F<> (which will be required in the future when compiling +CPAN modules). =back =head2 Configure-time Options -The F document describes several Configure-time options. -Some of these will work with Cygwin, others are not yet possible. Also, -some of these are experimental. +The F document describes several Configure-time options. Some of +these will work with Cygwin, others are not yet possible. Also, some of +these are experimental. You can either select an option when Configure +prompts you or you can define (undefine) symbols on the command line. =over 4 =item * C<-Uusedl> -If you want to force Perl to be compiled statically, you can either -choose this when Configure prompts you or you can use the Configure -command line option. +Undefining this symbol forces Perl to be compiled statically. =item * C<-Uusemymalloc> By default Perl uses the malloc() included with the Perl source. If you -want to force Perl to build with the system malloc(), you can either -choose this when Configure prompts you or you can use the Configure -command line option. +want to force Perl to build with the system malloc() undefine this symbol. -=item * C<-Dusemultiplicty> +=item * C<-Dusemultiplicity> Multiplicity is required when embedding Perl in a C program and using more than one interpreter instance. This works with the Cygwin port. @@ -222,17 +194,17 @@ more than one interpreter instance. This works with the Cygwin port. The PerlIO abstraction works with the Cygwin port. -=item * C<-Duse64bits -Duselonglong> +=item * C<-Duse64bitint> I supports 64-bit integers. However, several additional long long -functions are necessary to use them within Perl (I<{atol,strtoul}l>). +functions are necessary to use them within Perl (I<{strtol,strtoul}l>). These are B yet available with Cygwin. =item * C<-Duselongdouble> I supports long doubles (12 bytes). However, several additional long double math functions are necessary to use them within Perl -(I<{sqrt,pow,atan2,exp,fmod,log,cos,frexp,sin,floor,modf,atof}l>). +(I<{atan2,cos,exp,floor,fmod,frexp,log,modf,pow,sin,sqrt}l,strtold>). These are B yet available with Cygwin. =item * C<-Dusethreads> @@ -241,8 +213,8 @@ POSIX threads are B yet implemented in Cygwin. =item * C<-Duselargefiles> -Although Win32 supports large files, Cygwin currently uses 32-bit ints -for internal size and positional calculations. +Although Win32 supports large files, Cygwin currently uses 32-bit integers +for internal size and position calculations. =back @@ -254,10 +226,9 @@ You may see some messages during Configure that seem suspicious. =item * Whoa There -Cygwin does not yet implement chroot(), setegid() or seteuid() -functionality, but has stub functions that return C. You will -see a message when Configure detects that its guess conflicts with the -hint file. +Cygwin does not yet implement chroot() functionality, but has a stub +function that returns C. 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"! @@ -265,6 +236,34 @@ hint file. You should keep the recommended value. +=item * I + +I is needed to build dynamic libraries, but it does not exist +when dlsym() checking occurs (it is not created until `C' runs). +You will see the following message: + + Checking whether your dlsym() needs a leading underscore ... + ld2: not found + I can't compile and run the test program. + I'm guessing that dlsym doesn't need a leading underscore. + +Since the guess is correct, this is not a problem. + +=item * Win9x and C + +Win9x does not correctly report C with a non-blocking read on a +closed pipe. You will see the following messages: + + But it also returns -1 to signal EOF, so be careful! + WARNING: you can't distinguish between EOF and no data! + + *** WHOA THERE!!! *** + The recommended value for $d_eofnblk on this machine was "define"! + Keep the recommended value? [y] + +At least for consistency with WinNT, you should keep the recommended +value. + =item * Checking how std your stdio is... Configure reports: @@ -273,9 +272,21 @@ Configure reports: 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 + +This failure does not seem to cause any problems. + +=back + =head1 MAKE -Simply run make and wait: +Simply run I and wait: make 2>&1 | tee log.make @@ -297,9 +308,9 @@ wait until the `C' process to install the I script, this is because the remainder of the `C' refers to I without fully specifying its path and does this from multiple subdirectories. The assumption is that $installbin is in your current C. If this -is not the case or if you do not have an I program, `C' -will fail at some point. If this happens, just manually copy I -from the source directory to someplace in your C. +is not the case `C' will fail at some point. If this happens, +just manually copy I from the source directory to somewhere in +your C. =head1 TEST @@ -313,21 +324,23 @@ The same tests are run both times, but more information is provided when running as `C<./perl harness>'. Test results vary depending on your host system and your Cygwin -configuration. It is possible that Cygwin will pass all the tests, but it -is more likely that some tests will fail for one of the the reasons below. +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. =head2 File Permissions UNIX file permissions are based on sets of mode bits for -{read,write,execute} for each {user,group,other}. By default Cygwin only -tracks the Win32 readonly attribute represented as the UNIX file user -write bit (files are always readable, files are executable if they have -a F<.{com,bat,exe}> extension or begin with C<#!>, directories are always -readable and executable). On WinNT with the I C setting, -the remaining mode bits are stored as extended attributes. On WinNT -with the I C setting, permissions use the standard WinNT -security descriptors and access control lists. Without one of these -options, these tests will fail: +{read,write,execute} for each {user,group,other}. By default Cygwin +only tracks the Win32 read-only attribute represented as the UNIX file +user write bit (files are always readable, files are executable if they +have a F<.{com,bat,exe}> extension or begin with C<#!>, directories are +always readable and executable). On WinNT with the I C +setting, the additional mode bits are stored as extended file attributes. +On WinNT with the I C setting, permissions use the standard +WinNT security descriptors and access control lists. Without one of +these options, these tests will fail: Failed Test List of failed ------------------------------------ @@ -337,7 +350,6 @@ options, these tests will fail: lib/db-hash.t 16 lib/db-recno.t 18 lib/gdbm.t 2 - lib/glob-basic.t 9 (directory always readable) lib/ndbm.t 2 lib/odbm.t 2 lib/sdbm.t 2 @@ -346,7 +358,10 @@ options, these tests will fail: =head2 Hard Links 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 to 1, so the link count +for remote directories and files is not available. In both cases, +these tests will fail: Failed Test List of failed ------------------------------------ @@ -386,12 +401,17 @@ will fail: ------------------------------------ op/taint.t 1, 3, 31, 37 -Alternatively, you can copy F into one of the Windows system -directories (although, this is B recommended). +Alternatively, you can copy F into the directory where the +tests run: + + cp `type -p cygwin1.dll` t + +or one of the Windows system directories (although, this is B +recommended). =head2 /etc/group -Cygwin does not need F, in which case the F +Cygwin does not require F, in which case the F test will be skipped. The check performed by F expects to see entries that use the members field, otherwise this test will fail: @@ -399,20 +419,12 @@ see entries that use the members field, otherwise this test will fail: ------------------------------------ op/grent.t 1 -=head2 Unexplained Failures - -Any additional tests that fail are likely due to bugs in Cygwin. It is -expected that by the time of the next net release most of these will -be solved so they are not described here. None of the current bugs are -serious enough that workarounds are needed. - =head2 Script Portability -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 some differences that you should know about. This is only a very -brief guide to portability, more information about Cygwin can be found -in the Cygwin documentation. +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 +some differences that you should know about. This is a very brief guide +to portability, more information can be found in the Cygwin documentation. =over 4 @@ -421,70 +433,63 @@ in the Cygwin documentation. Cygwin pathnames can be separated by forward (F) or backward (F<\>) slashes. They may also begin with drive letters (F) or Universal Naming Codes (F). DOS device names (F, F, F, -F, F) are invalid as base filenames. However, they can be -used in extensions (e.g., F). Names may not contain these -characters: +F, F, F) are invalid as base filenames. However, they +can be used in extensions (e.g., F). Names may contain all +printable characters except these: : * ? " < > | -File names are case insensitive, but case preserving. With the I -C setting, file names are mixed-case (although, directory names -remain case insensitive). - -The I setting is only available with the "coolview" version of -F provided by Sergey Okhapkin at: - - ftp://ftp.franken.de/pub/win32/develop/gnuwin32/cygwin/porters/Okhapkin_Sergey/ +File names are case insensitive, but case preserving. A pathname +that contains a backslash is a Win32 pathname (and not subject to the +translations applied to POSIX style pathnames). =item * Text/Binary When a file is opened it is in either text or binary mode. In text mode -it is subject to CR/LF/Ctrl-Z translations. Perl provides a binmode() -function to force binary mode on files that otherwise would be treated -as text. With Cygwin, the default mode for an open() is determined by the -mode of the mount that underlies a file. For binmode() to be effective, -the underlying mount must be text. There is no way to force text mode -on a file underneath a binary mount. The text/binary issue is covered -at length in the Cygwin documentation. +a file is subject to CR/LF/Ctrl-Z translations. With Cygwin, the default +mode for an open() is determined by the mode of the mount that underlies +the file. Perl provides a binmode() function to set binary mode on files +that otherwise would be treated as text. sysopen() with the C +flag sets text mode on files that otherwise would be treated as binary: -lseek() only works with files opened in binary mode. + sysopen(FOO, "bar", O_WRONLY|O_CREAT|O_TEXT) -=item * F<.exe> +lseek(), tell() and sysseek() only work with files opened in binary mode. -The Cygwin stat() makes the F<.exe> extension transparent by looking for -a F when you ask for F (unless a F also exists). -Cygwin does not require a F<.exe> extension, but I adds it -automatically when building a program. However, when accessing an -executable as a normal file (e.g., I or I in a makefile) -the F<.exe> is not transparent. +The text/binary issue is covered at length in the Cygwin documentation. -NOTE: There is a version of I that understands F<.exe>, it can -be found at: +=item * F<.exe> - ftp://ftp.franken.de/pub/win32/develop/gnuwin32/cygwin/porters/Humblet_Pierre_A/ +The Cygwin stat(), lstat() and readlink() functions make the F<.exe> +extension transparent by looking for F when you ask for F +(unless a F also exists). Cygwin does not require a F<.exe> +extension, but I adds it automatically when building a program. +However, when accessing an executable as a normal file (e.g., I +in a makefile) the F<.exe> is not transparent. The I included +with Cygwin automatically appends a F<.exe> when necessary. =item * chown() -On WinNT with the I C setting, chown() can change a file's -user and group IDs. In all other configurations chown() is a no-op, -although this is appropriate on Win9x since there is no security model. +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. =item * Miscellaneous File locking using the C command to fcntl() is a stub that returns C. -Win32 can not unlink() an open file (but this is emulated by Cygwin). - Win9x can not rename() an open file (although WinNT can). =back =head1 INSTALL -This will install Perl, including man pages. +This will install Perl, including I pages. - make install 2>&1 | tee log.make-install + make install | tee log.make-install + +NOTE: If C is redirected `C' will B prompt +you to install I into F. You may need to be I to run `C'. If you are not, you must have write access to the directories in question. @@ -503,12 +508,11 @@ be kept as clean as possible. =item Documentation - INSTALL + INSTALL README.cygwin Changes Changes5.005 Changes5.004 - AUTHORS MAINTAIN MANIFEST - README.cygwin README.win32 + AUTHORS MAINTAIN MANIFEST README.win32 pod/perl.pod pod/perlfaq3.pod pod/perlhist.pod pod/perlmodlib.pod - pod/perlport.pod pod/perltoc.pod pod/perl5004delta.pod + pod/perlport.pod pod/perltoc.pod pod/perldelta.pod pod/perl5004delta.pod =item Build, Configure, Make, Install @@ -519,29 +523,35 @@ be kept as clean as possible. ext/NDBM_File/hints/cygwin.pl ext/ODBM_File/hints/cygwin.pl hints/cygwin.sh - Porting/patchls - cygwin in port list - Makefile.SH - linklibperl, cygwin/Makefile.SHs - makedepend.SH - uwinfix Configure - help finding hints from uname, shared libperl required for dynamic loading + Makefile.SH - linklibperl + Porting/patchls - cygwin in port list installman - man pages with :: translated to . - installperl - install dll, install to pods + installperl - install dll/ld2/perlld, install to pods + makedepend.SH - uwinfix =item Tests t/io/tell.t - binmode - t/op/magic.t - $^X WORKAROUND, s/.exe// - t/op/stat.t - no /dev, no -u (setuid) + 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 + (cache manager sometimes preserves ctime of file + previously created and deleted), no -u (setuid) =item Compiled Perl Source - doio.c - win9x can not rename a file when it is open EXTERN.h - __declspec(dllimport) XSUB.h - __declspec(dllexport) + cygwin/cygwin.c - os_extras (getcwd, spawn) + perl.c - os_extras 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 - util.c - environ WORKAROUND unixish.h - environ WORKAROUND + util.c - environ WORKAROUND =item Compiled Module Source @@ -553,38 +563,38 @@ be kept as clean as possible. =item Perl Modules/Scripts - lib/perl5db.pl - use stdin not /dev/tty - utils/perlcc.PL - DynaLoader.a in compile, -DUSEIMPORTLIB - utils/perldoc.PL - version comment - lib/File/Spec/Unix.pm - preserve //unc + lib/Cwd.pm - hook to internal Cwd::cwd lib/ExtUtils/MakeMaker.pm - require MM_Cygwin.pm lib/ExtUtils/MM_Cygwin.pm - canonpath, cflags, manifypods, perl_archive - lib/Cwd.pm - `pwd` + lib/File/Find.pm - on remote drives stat() always sets st_nlink to 1 + lib/File/Spec/Unix.pm - preserve //unc + lib/perl5db.pl - use stdin not /dev/tty + utils/perlcc.PL - DynaLoader.a in compile, -DUSEIMPORTLIB + utils/perldoc.PL - version comment =back =head1 BUGS -Upon each start, I warns that a rule for F is overridden -(but there seems to be no better solution than adding an explicit define). +When I starts, it warns about overriding commands for F. `C' does not remove library F<.def> and F<.exe.stackdump> files. The I script contains references to the source directory. You should -change these to C (or whatever) after install. +change these to $installbin after `C'. =head1 AUTHORS -Charles Wilson Ecwilson@ece.gatech.eduE, -Eric Fifer Eefifer@sanwaint.comE, -alexander smishlajev Eals@turnhere.comE, -Steven Morlock Enewspost@morlock.netE, -Sebastien Barre ESebastien.Barre@utc.frE, -Teun Burgers Eburgers@ecn.nlE. +Charles Wilson , +Eric Fifer , +alexander smishlajev , +Steven Morlock , +Sebastien Barre , +Teun Burgers . =head1 HISTORY -Last updated: 28 January 2000 +Last updated: 20 June 2000