| 1 | If you read this file _as_is_, just ignore the funny characters you |
| 2 | see. It is written in the POD format (see F<pod/perlpod.pod>) which is |
| 3 | specially designed to be readable as is. |
| 4 | |
| 5 | =head1 NAME |
| 6 | |
| 7 | perlcygwin - Perl for Cygwin |
| 8 | |
| 9 | =head1 SYNOPSIS |
| 10 | |
| 11 | This document will help you configure, make, test and install Perl |
| 12 | on Cygwin. This document also describes features of Cygwin that will |
| 13 | affect how Perl behaves at runtime. |
| 14 | |
| 15 | B<NOTE:> There are pre-built Perl packages available for Cygwin and a |
| 16 | version of Perl is provided in the normal Cygwin install. If you do |
| 17 | not need to customize the configuration, consider using one of those |
| 18 | packages. |
| 19 | |
| 20 | |
| 21 | =head1 PREREQUISITES FOR COMPILING PERL ON CYGWIN |
| 22 | |
| 23 | =head2 Cygwin = GNU+Cygnus+Windows (Don't leave UNIX without it) |
| 24 | |
| 25 | The Cygwin tools are ports of the popular GNU development tools for Win32 |
| 26 | platforms. They run thanks to the Cygwin library which provides the UNIX |
| 27 | system calls and environment these programs expect. More information |
| 28 | about this project can be found at: |
| 29 | |
| 30 | L<http://www.cygwin.com/> |
| 31 | |
| 32 | A recent net or commercial release of Cygwin is required. |
| 33 | |
| 34 | At the time this document was last updated, Cygwin 1.7.16 was current. |
| 35 | |
| 36 | |
| 37 | =head2 Cygwin Configuration |
| 38 | |
| 39 | While building Perl some changes may be necessary to your Cygwin setup so |
| 40 | that Perl builds cleanly. These changes are B<not> required for normal |
| 41 | Perl usage. |
| 42 | |
| 43 | B<NOTE:> The binaries that are built will run on all Win32 versions. |
| 44 | They do not depend on your host system (WinXP/Win2K/Win7) or your |
| 45 | Cygwin configuration (binary/text mounts, cvgserver). |
| 46 | The only dependencies come from hard-coded pathnames like F</usr/local>. |
| 47 | However, your host system and Cygwin configuration will affect Perl's |
| 48 | runtime behavior (see L</"TEST">). |
| 49 | |
| 50 | =over 4 |
| 51 | |
| 52 | =item * C<PATH> |
| 53 | |
| 54 | Set the C<PATH> environment variable so that Configure finds the Cygwin |
| 55 | versions of programs. Any not-needed Windows directories should be removed or |
| 56 | moved to the end of your C<PATH>. |
| 57 | |
| 58 | =item * I<nroff> |
| 59 | |
| 60 | If you do not have I<nroff> (which is part of the I<groff> package), |
| 61 | Configure will B<not> prompt you to install I<man> pages. |
| 62 | |
| 63 | =back |
| 64 | |
| 65 | =head1 CONFIGURE PERL ON CYGWIN |
| 66 | |
| 67 | The default options gathered by Configure with the assistance of |
| 68 | F<hints/cygwin.sh> will build a Perl that supports dynamic loading |
| 69 | (which requires a shared F<cygperl5_16.dll>). |
| 70 | |
| 71 | This will run Configure and keep a record: |
| 72 | |
| 73 | ./Configure 2>&1 | tee log.configure |
| 74 | |
| 75 | If you are willing to accept all the defaults run Configure with B<-de>. |
| 76 | However, several useful customizations are available. |
| 77 | |
| 78 | =head2 Stripping Perl Binaries on Cygwin |
| 79 | |
| 80 | It is possible to strip the EXEs and DLLs created by the build process. |
| 81 | The resulting binaries will be significantly smaller. If you want the |
| 82 | binaries to be stripped, you can either add a B<-s> option when Configure |
| 83 | prompts you, |
| 84 | |
| 85 | Any additional ld flags (NOT including libraries)? [none] -s |
| 86 | Any special flags to pass to g++ to create a dynamically loaded |
| 87 | library? |
| 88 | [none] -s |
| 89 | Any special flags to pass to gcc to use dynamic linking? [none] -s |
| 90 | |
| 91 | or you can edit F<hints/cygwin.sh> and uncomment the relevant variables |
| 92 | near the end of the file. |
| 93 | |
| 94 | =head2 Optional Libraries for Perl on Cygwin |
| 95 | |
| 96 | Several Perl functions and modules depend on the existence of |
| 97 | some optional libraries. Configure will find them if they are |
| 98 | installed in one of the directories listed as being used for library |
| 99 | searches. Pre-built packages for most of these are available from |
| 100 | the Cygwin installer. |
| 101 | |
| 102 | =over 4 |
| 103 | |
| 104 | =item * C<-lcrypt> |
| 105 | |
| 106 | The crypt package distributed with Cygwin is a Linux compatible 56-bit |
| 107 | DES crypt port by Corinna Vinschen. |
| 108 | |
| 109 | Alternatively, the crypt libraries in GNU libc have been ported to Cygwin. |
| 110 | |
| 111 | As of libcrypt 1.3 (March 2016), you will need to install the |
| 112 | libcrypt-devel package for Configure to detect crypt(). |
| 113 | |
| 114 | =item * C<-lgdbm_compat> (C<use GDBM_File>) |
| 115 | |
| 116 | GDBM is available for Cygwin. |
| 117 | |
| 118 | NOTE: The GDBM library only works on NTFS partitions. |
| 119 | |
| 120 | =item * C<-ldb> (C<use DB_File>) |
| 121 | |
| 122 | BerkeleyDB is available for Cygwin. |
| 123 | |
| 124 | NOTE: The BerkeleyDB library only completely works on NTFS partitions. |
| 125 | |
| 126 | =item * C<cygserver> (C<use IPC::SysV>) |
| 127 | |
| 128 | A port of SysV IPC is available for Cygwin. |
| 129 | |
| 130 | NOTE: This has B<not> been extensively tested. In particular, |
| 131 | C<d_semctl_semun> is undefined because it fails a Configure test |
| 132 | and on Win9x the I<shm*()> functions seem to hang. It also creates |
| 133 | a compile time dependency because F<perl.h> includes F<<sys/ipc.h>> |
| 134 | and F<<sys/sem.h>> (which will be required in the future when compiling |
| 135 | CPAN modules). CURRENTLY NOT SUPPORTED! |
| 136 | |
| 137 | =item * C<-lutil> |
| 138 | |
| 139 | Included with the standard Cygwin netrelease is the inetutils package |
| 140 | which includes libutil.a. |
| 141 | |
| 142 | =back |
| 143 | |
| 144 | =head2 Configure-time Options for Perl on Cygwin |
| 145 | |
| 146 | The F<INSTALL> document describes several Configure-time options. Some of |
| 147 | these will work with Cygwin, others are not yet possible. Also, some of |
| 148 | these are experimental. You can either select an option when Configure |
| 149 | prompts you or you can define (undefine) symbols on the command line. |
| 150 | |
| 151 | =over 4 |
| 152 | |
| 153 | =item * C<-Uusedl> |
| 154 | |
| 155 | Undefining this symbol forces Perl to be compiled statically. |
| 156 | |
| 157 | =item * C<-Dusemymalloc> |
| 158 | |
| 159 | By default Perl does not use the C<malloc()> included with the Perl source, |
| 160 | because it was slower and not entirely thread-safe. If you want to force |
| 161 | Perl to build with the old -Dusemymalloc define this. |
| 162 | |
| 163 | =item * C<-Uuseperlio> |
| 164 | |
| 165 | Undefining this symbol disables the PerlIO abstraction. PerlIO is now the |
| 166 | default; it is not recommended to disable PerlIO. |
| 167 | |
| 168 | =item * C<-Dusemultiplicity> |
| 169 | |
| 170 | Multiplicity is required when embedding Perl in a C program and using |
| 171 | more than one interpreter instance. This is only required when you build |
| 172 | a not-threaded perl with C<-Uuseithreads>. |
| 173 | |
| 174 | =item * C<-Uuse64bitint> |
| 175 | |
| 176 | By default Perl uses 64 bit integers. If you want to use smaller 32 bit |
| 177 | integers, define this symbol. |
| 178 | |
| 179 | =item * C<-Duselongdouble> |
| 180 | |
| 181 | I<gcc> supports long doubles (12 bytes). However, several additional |
| 182 | long double math functions are necessary to use them within Perl |
| 183 | (I<{atan2, cos, exp, floor, fmod, frexp, isnan, log, modf, pow, sin, sqrt}l, |
| 184 | strtold>). |
| 185 | These are B<not> yet available with newlib, the Cygwin libc. |
| 186 | |
| 187 | =item * C<-Uuseithreads> |
| 188 | |
| 189 | Define this symbol if you want not-threaded faster perl. |
| 190 | |
| 191 | =item * C<-Duselargefiles> |
| 192 | |
| 193 | Cygwin uses 64-bit integers for internal size and position calculations, |
| 194 | this will be correctly detected and defined by Configure. |
| 195 | |
| 196 | =item * C<-Dmksymlinks> |
| 197 | |
| 198 | Use this to build perl outside of the source tree. Details can be |
| 199 | found in the F<INSTALL> document. This is the recommended way to |
| 200 | build perl from sources. |
| 201 | |
| 202 | =back |
| 203 | |
| 204 | =head2 Suspicious Warnings on Cygwin |
| 205 | |
| 206 | You may see some messages during Configure that seem suspicious. |
| 207 | |
| 208 | =over 4 |
| 209 | |
| 210 | =item * Win9x and C<d_eofnblk> |
| 211 | |
| 212 | Win9x does not correctly report C<EOF> with a non-blocking read on a |
| 213 | closed pipe. You will see the following messages: |
| 214 | |
| 215 | But it also returns -1 to signal EOF, so be careful! |
| 216 | WARNING: you can't distinguish between EOF and no data! |
| 217 | |
| 218 | *** WHOA THERE!!! *** |
| 219 | The recommended value for $d_eofnblk on this machine was |
| 220 | "define"! |
| 221 | Keep the recommended value? [y] |
| 222 | |
| 223 | At least for consistency with WinNT, you should keep the recommended |
| 224 | value. |
| 225 | |
| 226 | =item * Compiler/Preprocessor defines |
| 227 | |
| 228 | The following error occurs because of the Cygwin C<#define> of |
| 229 | C<_LONG_DOUBLE>: |
| 230 | |
| 231 | Guessing which symbols your C compiler and preprocessor define... |
| 232 | try.c:<line#>: missing binary operator |
| 233 | |
| 234 | This failure does not seem to cause any problems. With older gcc |
| 235 | versions, "parse error" is reported instead of "missing binary |
| 236 | operator". |
| 237 | |
| 238 | =back |
| 239 | |
| 240 | =head1 MAKE ON CYGWIN |
| 241 | |
| 242 | Simply run I<make> and wait: |
| 243 | |
| 244 | make 2>&1 | tee log.make |
| 245 | |
| 246 | =head1 TEST ON CYGWIN |
| 247 | |
| 248 | There are two steps to running the test suite: |
| 249 | |
| 250 | make test 2>&1 | tee log.make-test |
| 251 | |
| 252 | cd t; ./perl harness 2>&1 | tee ../log.harness |
| 253 | |
| 254 | The same tests are run both times, but more information is provided when |
| 255 | running as C<./perl harness>. |
| 256 | |
| 257 | Test results vary depending on your host system and your Cygwin |
| 258 | configuration. If a test can pass in some Cygwin setup, it is always |
| 259 | attempted and explainable test failures are documented. It is possible |
| 260 | for Perl to pass all the tests, but it is more likely that some tests |
| 261 | will fail for one of the reasons listed below. |
| 262 | |
| 263 | =head2 File Permissions on Cygwin |
| 264 | |
| 265 | UNIX file permissions are based on sets of mode bits for |
| 266 | {read,write,execute} for each {user,group,other}. By default Cygwin |
| 267 | only tracks the Win32 read-only attribute represented as the UNIX file |
| 268 | user write bit (files are always readable, files are executable if they |
| 269 | have a F<.{com,bat,exe}> extension or begin with C<#!>, directories are |
| 270 | always readable and executable). On WinNT with the I<ntea> C<CYGWIN> |
| 271 | setting, the additional mode bits are stored as extended file attributes. |
| 272 | On WinNT with the default I<ntsec> C<CYGWIN> setting, permissions use the |
| 273 | standard WinNT security descriptors and access control lists. Without one of |
| 274 | these options, these tests will fail (listing not updated yet): |
| 275 | |
| 276 | Failed Test List of failed |
| 277 | ------------------------------------ |
| 278 | io/fs.t 5, 7, 9-10 |
| 279 | lib/anydbm.t 2 |
| 280 | lib/db-btree.t 20 |
| 281 | lib/db-hash.t 16 |
| 282 | lib/db-recno.t 18 |
| 283 | lib/gdbm.t 2 |
| 284 | lib/ndbm.t 2 |
| 285 | lib/odbm.t 2 |
| 286 | lib/sdbm.t 2 |
| 287 | op/stat.t 9, 20 (.tmp not an executable extension) |
| 288 | |
| 289 | =head2 NDBM_File and ODBM_File do not work on FAT filesystems |
| 290 | |
| 291 | Do not use NDBM_File or ODBM_File on FAT filesystem. They can be |
| 292 | built on a FAT filesystem, but many tests will fail: |
| 293 | |
| 294 | ../ext/NDBM_File/ndbm.t 13 3328 71 59 83.10% 1-2 4 16-71 |
| 295 | ../ext/ODBM_File/odbm.t 255 65280 ?? ?? % ?? |
| 296 | ../lib/AnyDBM_File.t 2 512 12 2 16.67% 1 4 |
| 297 | ../lib/Memoize/t/errors.t 0 139 11 5 45.45% 7-11 |
| 298 | ../lib/Memoize/t/tie_ndbm.t 13 3328 4 4 100.00% 1-4 |
| 299 | run/fresh_perl.t 97 1 1.03% 91 |
| 300 | |
| 301 | If you intend to run only on FAT (or if using AnyDBM_File on FAT), |
| 302 | run Configure with the -Ui_ndbm and -Ui_dbm options to prevent |
| 303 | NDBM_File and ODBM_File being built. |
| 304 | |
| 305 | With NTFS (and no CYGWIN=nontsec), there should be no problems even if |
| 306 | perl was built on FAT. |
| 307 | |
| 308 | =head2 C<fork()> failures in io_* tests |
| 309 | |
| 310 | A C<fork()> failure may result in the following tests failing: |
| 311 | |
| 312 | ext/IO/lib/IO/t/io_multihomed.t |
| 313 | ext/IO/lib/IO/t/io_sock.t |
| 314 | ext/IO/lib/IO/t/io_unix.t |
| 315 | |
| 316 | See comment on fork in L</Miscellaneous> below. |
| 317 | |
| 318 | =head1 Specific features of the Cygwin port |
| 319 | |
| 320 | =head2 Script Portability on Cygwin |
| 321 | |
| 322 | Cygwin does an outstanding job of providing UNIX-like semantics on top of |
| 323 | Win32 systems. However, in addition to the items noted above, there are |
| 324 | some differences that you should know about. This is a very brief guide |
| 325 | to portability, more information can be found in the Cygwin documentation. |
| 326 | |
| 327 | =over 4 |
| 328 | |
| 329 | =item * Pathnames |
| 330 | |
| 331 | Cygwin pathnames are separated by forward (F</>) slashes, Universal |
| 332 | Naming Codes (F<//UNC>) are also supported Since cygwin-1.7 non-POSIX |
| 333 | pathnames are discouraged. Names may contain all printable |
| 334 | characters. |
| 335 | |
| 336 | File names are case insensitive, but case preserving. A pathname that |
| 337 | contains a backslash or drive letter is a Win32 pathname, and not |
| 338 | subject to the translations applied to POSIX style pathnames, but |
| 339 | cygwin will warn you, so better convert them to POSIX. |
| 340 | |
| 341 | For conversion we have C<Cygwin::win_to_posix_path()> and |
| 342 | C<Cygwin::posix_to_win_path()>. |
| 343 | |
| 344 | Since cygwin-1.7 pathnames are UTF-8 encoded. |
| 345 | |
| 346 | =item * Text/Binary |
| 347 | |
| 348 | Since cygwin-1.7 textmounts are deprecated and strongly discouraged. |
| 349 | |
| 350 | When a file is opened it is in either text or binary mode. In text mode |
| 351 | a file is subject to CR/LF/Ctrl-Z translations. With Cygwin, the default |
| 352 | mode for an C<open()> is determined by the mode of the mount that underlies |
| 353 | the file. See L</Cygwin::is_binmount>(). Perl provides a C<binmode()> function |
| 354 | to set binary mode on files that otherwise would be treated as text. |
| 355 | C<sysopen()> with the C<O_TEXT> flag sets text mode on files that otherwise |
| 356 | would be treated as binary: |
| 357 | |
| 358 | sysopen(FOO, "bar", O_WRONLY|O_CREAT|O_TEXT) |
| 359 | |
| 360 | C<lseek()>, C<tell()> and C<sysseek()> only work with files opened in binary |
| 361 | mode. |
| 362 | |
| 363 | The text/binary issue is covered at length in the Cygwin documentation. |
| 364 | |
| 365 | =item * PerlIO |
| 366 | |
| 367 | PerlIO overrides the default Cygwin Text/Binary behaviour. A file will |
| 368 | always be treated as binary, regardless of the mode of the mount it lives |
| 369 | on, just like it is in UNIX. So CR/LF translation needs to be requested in |
| 370 | either the C<open()> call like this: |
| 371 | |
| 372 | open(FH, ">:crlf", "out.txt"); |
| 373 | |
| 374 | which will do conversion from LF to CR/LF on the output, or in the |
| 375 | environment settings (add this to your .bashrc): |
| 376 | |
| 377 | export PERLIO=crlf |
| 378 | |
| 379 | which will pull in the crlf PerlIO layer which does LF -> CRLF conversion |
| 380 | on every output generated by perl. |
| 381 | |
| 382 | =item * F<.exe> |
| 383 | |
| 384 | The Cygwin C<stat()>, C<lstat()> and C<readlink()> functions make the F<.exe> |
| 385 | extension transparent by looking for F<foo.exe> when you ask for F<foo> |
| 386 | (unless a F<foo> also exists). Cygwin does not require a F<.exe> |
| 387 | extension, but I<gcc> adds it automatically when building a program. |
| 388 | However, when accessing an executable as a normal file (e.g., I<cp> |
| 389 | in a makefile) the F<.exe> is not transparent. The I<install> program |
| 390 | included with Cygwin automatically appends a F<.exe> when necessary. |
| 391 | |
| 392 | =item * Cygwin vs. Windows process ids |
| 393 | |
| 394 | Cygwin processes have their own pid, which is different from the |
| 395 | underlying windows pid. Most posix compliant Proc functions expect |
| 396 | the cygwin pid, but several Win32::Process functions expect the |
| 397 | winpid. E.g. C<$$> is the cygwin pid of F</usr/bin/perl>, which is not |
| 398 | the winpid. Use C<Cygwin::pid_to_winpid()> and C<Cygwin::winpid_to_pid()> |
| 399 | to translate between them. |
| 400 | |
| 401 | =item * Cygwin vs. Windows errors |
| 402 | |
| 403 | Under Cygwin, $^E is the same as $!. When using L<Win32 API Functions|Win32>, |
| 404 | use C<Win32::GetLastError()> to get the last Windows error. |
| 405 | |
| 406 | =item * rebase errors on fork or system |
| 407 | |
| 408 | Using C<fork()> or C<system()> out to another perl after loading multiple dlls |
| 409 | may result on a DLL baseaddress conflict. The internal cygwin error |
| 410 | looks like like the following: |
| 411 | |
| 412 | 0 [main] perl 8916 child_info_fork::abort: data segment start: |
| 413 | parent (0xC1A000) != child(0xA6A000) |
| 414 | |
| 415 | or: |
| 416 | |
| 417 | 183 [main] perl 3588 C:\cygwin\bin\perl.exe: *** fatal error - |
| 418 | unable to remap C:\cygwin\bin\cygsvn_subr-1-0.dll to same address |
| 419 | as parent(0x6FB30000) != 0x6FE60000 46 [main] perl 3488 fork: child |
| 420 | 3588 - died waiting for dll loading, errno11 |
| 421 | |
| 422 | See L<http://cygwin.com/faq/faq-nochunks.html#faq.using.fixing-fork-failures> |
| 423 | It helps if not too many DLLs are loaded in memory so the available address space is larger, |
| 424 | e.g. stopping the MS Internet Explorer might help. |
| 425 | |
| 426 | Use the perlrebase or rebase utilities to resolve the conflicting dll addresses. |
| 427 | The rebase package is included in the Cygwin setup. Use F<setup.exe> |
| 428 | from L<http://www.cygwin.com/setup.exe> to install it. |
| 429 | |
| 430 | 1. kill all perl processes and run C<perlrebase> or |
| 431 | |
| 432 | 2. kill all cygwin processes and services, start dash from cmd.exe and run C<rebaseall>. |
| 433 | |
| 434 | =item * C<chown()> |
| 435 | |
| 436 | On WinNT C<chown()> can change a file's user and group IDs. On Win9x C<chown()> |
| 437 | is a no-op, although this is appropriate since there is no security model. |
| 438 | |
| 439 | =item * Miscellaneous |
| 440 | |
| 441 | File locking using the C<F_GETLK> command to C<fcntl()> is a stub that |
| 442 | returns C<ENOSYS>. |
| 443 | |
| 444 | Win9x can not C<rename()> an open file (although WinNT can). |
| 445 | |
| 446 | The Cygwin C<chroot()> implementation has holes (it can not restrict file |
| 447 | access by native Win32 programs). |
| 448 | |
| 449 | Inplace editing C<perl -i> of files doesn't work without doing a backup |
| 450 | of the file being edited C<perl -i.bak> because of windowish restrictions, |
| 451 | therefore Perl adds the suffix C<.bak> automatically if you use C<perl -i> |
| 452 | without specifying a backup extension. |
| 453 | |
| 454 | =back |
| 455 | |
| 456 | =head2 Prebuilt methods: |
| 457 | |
| 458 | =over 4 |
| 459 | |
| 460 | =item C<Cwd::cwd> |
| 461 | |
| 462 | Returns the current working directory. |
| 463 | |
| 464 | =item C<Cygwin::pid_to_winpid> |
| 465 | |
| 466 | Translates a cygwin pid to the corresponding Windows pid (which may or |
| 467 | may not be the same). |
| 468 | |
| 469 | =item C<Cygwin::winpid_to_pid> |
| 470 | |
| 471 | Translates a Windows pid to the corresponding cygwin pid (if any). |
| 472 | |
| 473 | =item C<Cygwin::win_to_posix_path> |
| 474 | |
| 475 | Translates a Windows path to the corresponding cygwin path respecting |
| 476 | the current mount points. With a second non-null argument returns an |
| 477 | absolute path. Double-byte characters will not be translated. |
| 478 | |
| 479 | =item C<Cygwin::posix_to_win_path> |
| 480 | |
| 481 | Translates a cygwin path to the corresponding cygwin path respecting |
| 482 | the current mount points. With a second non-null argument returns an |
| 483 | absolute path. Double-byte characters will not be translated. |
| 484 | |
| 485 | =item C<Cygwin::mount_table()> |
| 486 | |
| 487 | Returns an array of [mnt_dir, mnt_fsname, mnt_type, mnt_opts]. |
| 488 | |
| 489 | perl -e 'for $i (Cygwin::mount_table) {print join(" ",@$i),"\n";}' |
| 490 | /bin c:\cygwin\bin system binmode,cygexec |
| 491 | /usr/bin c:\cygwin\bin system binmode |
| 492 | /usr/lib c:\cygwin\lib system binmode |
| 493 | / c:\cygwin system binmode |
| 494 | /cygdrive/c c: system binmode,noumount |
| 495 | /cygdrive/d d: system binmode,noumount |
| 496 | /cygdrive/e e: system binmode,noumount |
| 497 | |
| 498 | =item C<Cygwin::mount_flags> |
| 499 | |
| 500 | Returns the mount type and flags for a specified mount point. |
| 501 | A comma-separated string of mntent->mnt_type (always |
| 502 | "system" or "user"), then the mntent->mnt_opts, where |
| 503 | the first is always "binmode" or "textmode". |
| 504 | |
| 505 | system|user,binmode|textmode,exec,cygexec,cygdrive,mixed, |
| 506 | notexec,managed,nosuid,devfs,proc,noumount |
| 507 | |
| 508 | If the argument is "/cygdrive", then just the volume mount settings, |
| 509 | and the cygdrive mount prefix are returned. |
| 510 | |
| 511 | User mounts override system mounts. |
| 512 | |
| 513 | $ perl -e 'print Cygwin::mount_flags "/usr/bin"' |
| 514 | system,binmode,cygexec |
| 515 | $ perl -e 'print Cygwin::mount_flags "/cygdrive"' |
| 516 | binmode,cygdrive,/cygdrive |
| 517 | |
| 518 | =item C<Cygwin::is_binmount> |
| 519 | |
| 520 | Returns true if the given cygwin path is binary mounted, false if the |
| 521 | path is mounted in textmode. |
| 522 | |
| 523 | =item C<Cygwin::sync_winenv> |
| 524 | |
| 525 | Cygwin does not initialize all original Win32 environment variables. |
| 526 | See the bottom of this page L<http://cygwin.com/cygwin-ug-net/setup-env.html> |
| 527 | for "Restricted Win32 environment". |
| 528 | |
| 529 | Certain Win32 programs called from cygwin programs might need some environment |
| 530 | variable, such as e.g. ADODB needs %COMMONPROGRAMFILES%. |
| 531 | Call Cygwin::sync_winenv() to copy all Win32 environment variables to your |
| 532 | process and note that cygwin will warn on every encounter of non-POSIX paths. |
| 533 | |
| 534 | =back |
| 535 | |
| 536 | =head1 INSTALL PERL ON CYGWIN |
| 537 | |
| 538 | This will install Perl, including I<man> pages. |
| 539 | |
| 540 | make install 2>&1 | tee log.make-install |
| 541 | |
| 542 | NOTE: If C<STDERR> is redirected C<make install> will B<not> prompt |
| 543 | you to install I<perl> into F</usr/bin>. |
| 544 | |
| 545 | You may need to be I<Administrator> to run C<make install>. If you |
| 546 | are not, you must have write access to the directories in question. |
| 547 | |
| 548 | Information on installing the Perl documentation in HTML format can be |
| 549 | found in the F<INSTALL> document. |
| 550 | |
| 551 | =head1 MANIFEST ON CYGWIN |
| 552 | |
| 553 | These are the files in the Perl release that contain references to Cygwin. |
| 554 | These very brief notes attempt to explain the reason for all conditional |
| 555 | code. Hopefully, keeping this up to date will allow the Cygwin port to |
| 556 | be kept as clean as possible. |
| 557 | |
| 558 | =over 4 |
| 559 | |
| 560 | =item Documentation |
| 561 | |
| 562 | INSTALL README.cygwin README.win32 MANIFEST |
| 563 | pod/perl.pod pod/perlport.pod pod/perlfaq3.pod |
| 564 | pod/perldelta.pod pod/perl5004delta.pod pod/perl56delta.pod |
| 565 | pod/perl561delta.pod pod/perl570delta.pod pod/perl572delta.pod |
| 566 | pod/perl573delta.pod pod/perl58delta.pod pod/perl581delta.pod |
| 567 | pod/perl590delta.pod pod/perlhist.pod pod/perlmodlib.pod |
| 568 | pod/perltoc.pod Porting/Glossary pod/perlgit.pod |
| 569 | Porting/checkAUTHORS.pl |
| 570 | dist/Cwd/Changes ext/Compress-Raw-Zlib/Changes |
| 571 | dist/Time-HiRes/Changes |
| 572 | ext/Compress-Raw-Zlib/README ext/Compress-Zlib/Changes |
| 573 | ext/DB_File/Changes ext/Encode/Changes ext/Sys-Syslog/Changes |
| 574 | ext/Win32API-File/Changes |
| 575 | lib/ExtUtils/CBuilder/Changes lib/ExtUtils/Changes |
| 576 | lib/ExtUtils/NOTES lib/ExtUtils/PATCHING lib/ExtUtils/README |
| 577 | lib/Net/Ping/Changes lib/Test/Harness/Changes |
| 578 | lib/Term/ANSIColor/ChangeLog lib/Term/ANSIColor/README |
| 579 | README.symbian symbian/TODO |
| 580 | |
| 581 | =item Build, Configure, Make, Install |
| 582 | |
| 583 | cygwin/Makefile.SHs |
| 584 | ext/IPC/SysV/hints/cygwin.pl |
| 585 | ext/NDBM_File/hints/cygwin.pl |
| 586 | ext/ODBM_File/hints/cygwin.pl |
| 587 | hints/cygwin.sh |
| 588 | Configure - help finding hints from uname, |
| 589 | shared libperl required for dynamic loading |
| 590 | Makefile.SH Cross/Makefile-cross-SH |
| 591 | - linklibperl |
| 592 | Porting/patchls - cygwin in port list |
| 593 | installman - man pages with :: translated to . |
| 594 | installperl - install dll, install to 'pods' |
| 595 | makedepend.SH - uwinfix |
| 596 | regen_lib.pl - file permissions |
| 597 | |
| 598 | NetWare/Makefile |
| 599 | plan9/mkfile |
| 600 | symbian/sanity.pl symbian/sisify.pl |
| 601 | hints/uwin.sh |
| 602 | vms/descrip_mms.template |
| 603 | win32/Makefile win32/makefile.mk |
| 604 | |
| 605 | =item Tests |
| 606 | |
| 607 | t/io/fs.t - no file mode checks if not ntsec |
| 608 | skip rename() check when not |
| 609 | check_case:relaxed |
| 610 | t/io/tell.t - binmode |
| 611 | t/lib/cygwin.t - builtin cygwin function tests |
| 612 | t/op/groups.t - basegroup has ID = 0 |
| 613 | t/op/magic.t - $^X/symlink WORKAROUND, s/.exe// |
| 614 | t/op/stat.t - no /dev, skip Win32 ftCreationTime quirk |
| 615 | (cache manager sometimes preserves ctime of |
| 616 | file previously created and deleted), no -u |
| 617 | (setuid) |
| 618 | t/op/taint.t - can't use empty path under Cygwin Perl |
| 619 | t/op/time.t - no tzset() |
| 620 | |
| 621 | =item Compiled Perl Source |
| 622 | |
| 623 | EXTERN.h - __declspec(dllimport) |
| 624 | XSUB.h - __declspec(dllexport) |
| 625 | cygwin/cygwin.c - os_extras (getcwd, spawn, and several |
| 626 | Cygwin:: functions) |
| 627 | perl.c - os_extras, -i.bak |
| 628 | perl.h - binmode |
| 629 | doio.c - win9x can not rename a file when it is open |
| 630 | pp_sys.c - do not define h_errno, init |
| 631 | _pwent_struct.pw_comment |
| 632 | util.c - use setenv |
| 633 | util.h - PERL_FILE_IS_ABSOLUTE macro |
| 634 | pp.c - Comment about Posix vs IEEE math under |
| 635 | Cygwin |
| 636 | perlio.c - CR/LF mode |
| 637 | perliol.c - Comment about EXTCONST under Cygwin |
| 638 | |
| 639 | =item Compiled Module Source |
| 640 | |
| 641 | ext/Compress-Raw-Zlib/Makefile.PL |
| 642 | - Can't install via CPAN shell under Cygwin |
| 643 | ext/Compress-Raw-Zlib/zlib-src/zutil.h |
| 644 | - Cygwin is Unix-like and has vsnprintf |
| 645 | ext/Errno/Errno_pm.PL - Special handling for Win32 Perl under |
| 646 | Cygwin |
| 647 | ext/POSIX/POSIX.xs - tzname defined externally |
| 648 | ext/SDBM_File/sdbm/pair.c |
| 649 | - EXTCONST needs to be redefined from |
| 650 | EXTERN.h |
| 651 | ext/SDBM_File/sdbm/sdbm.c |
| 652 | - binary open |
| 653 | ext/Sys/Syslog/Syslog.xs |
| 654 | - Cygwin has syslog.h |
| 655 | ext/Sys/Syslog/win32/compile.pl |
| 656 | - Convert paths to Windows paths |
| 657 | ext/Time-HiRes/HiRes.xs |
| 658 | - Various timers not available |
| 659 | ext/Time-HiRes/Makefile.PL |
| 660 | - Find w32api/windows.h |
| 661 | ext/Win32/Makefile.PL - Use various libraries under Cygwin |
| 662 | ext/Win32/Win32.xs - Child dir and child env under Cygwin |
| 663 | ext/Win32API-File/File.xs |
| 664 | - _open_osfhandle not implemented under |
| 665 | Cygwin |
| 666 | ext/Win32CORE/Win32CORE.c |
| 667 | - __declspec(dllexport) |
| 668 | |
| 669 | =item Perl Modules/Scripts |
| 670 | |
| 671 | ext/B/t/OptreeCheck.pm - Comment about stderr/stdout order under |
| 672 | Cygwin |
| 673 | ext/Digest-SHA/bin/shasum |
| 674 | - Use binary mode under Cygwin |
| 675 | ext/Sys/Syslog/win32/Win32.pm |
| 676 | - Convert paths to Windows paths |
| 677 | ext/Time-HiRes/HiRes.pm |
| 678 | - Comment about various timers not available |
| 679 | ext/Win32API-File/File.pm |
| 680 | - _open_osfhandle not implemented under |
| 681 | Cygwin |
| 682 | ext/Win32CORE/Win32CORE.pm |
| 683 | - History of Win32CORE under Cygwin |
| 684 | lib/Cwd.pm - hook to internal Cwd::cwd |
| 685 | lib/ExtUtils/CBuilder/Platform/cygwin.pm |
| 686 | - use gcc for ld, and link to libperl.dll.a |
| 687 | lib/ExtUtils/CBuilder.pm |
| 688 | - Cygwin is Unix-like |
| 689 | lib/ExtUtils/Install.pm - Install and rename issues under Cygwin |
| 690 | lib/ExtUtils/MM.pm - OS classifications |
| 691 | lib/ExtUtils/MM_Any.pm - Example for Cygwin |
| 692 | lib/ExtUtils/MakeMaker.pm |
| 693 | - require MM_Cygwin.pm |
| 694 | lib/ExtUtils/MM_Cygwin.pm |
| 695 | - canonpath, cflags, manifypods, perl_archive |
| 696 | lib/File/Fetch.pm - Comment about quotes using a Cygwin example |
| 697 | lib/File/Find.pm - on remote drives stat() always sets |
| 698 | st_nlink to 1 |
| 699 | lib/File/Spec/Cygwin.pm - case_tolerant |
| 700 | lib/File/Spec/Unix.pm - preserve //unc |
| 701 | lib/File/Spec/Win32.pm - References a message on cygwin.com |
| 702 | lib/File/Spec.pm - Pulls in lib/File/Spec/Cygwin.pm |
| 703 | lib/File/Temp.pm - no directory sticky bit |
| 704 | lib/Module/CoreList.pm - List of all module files and versions |
| 705 | lib/Net/Domain.pm - No domainname command under Cygwin |
| 706 | lib/Net/Netrc.pm - Bypass using stat() under Cygwin |
| 707 | lib/Net/Ping.pm - ECONREFUSED is EAGAIN under Cygwin |
| 708 | lib/Pod/Find.pm - Set 'pods' dir |
| 709 | lib/Pod/Perldoc/ToMan.pm - '-c' switch for pod2man |
| 710 | lib/Pod/Perldoc.pm - Use 'less' pager, and use .exe extension |
| 711 | lib/Term/ANSIColor.pm - Cygwin terminal info |
| 712 | lib/perl5db.pl - use stdin not /dev/tty |
| 713 | utils/perlbug.PL - Add CYGWIN environment variable to report |
| 714 | |
| 715 | =item Perl Module Tests |
| 716 | |
| 717 | dist/Cwd/t/cwd.t |
| 718 | ext/Compress-Zlib/t/14gzopen.t |
| 719 | ext/DB_File/t/db-btree.t |
| 720 | ext/DB_File/t/db-hash.t |
| 721 | ext/DB_File/t/db-recno.t |
| 722 | ext/DynaLoader/t/DynaLoader.t |
| 723 | ext/File-Glob/t/basic.t |
| 724 | ext/GDBM_File/t/gdbm.t |
| 725 | ext/POSIX/t/sysconf.t |
| 726 | ext/POSIX/t/time.t |
| 727 | ext/SDBM_File/t/sdbm.t |
| 728 | ext/Sys/Syslog/t/syslog.t |
| 729 | ext/Time-HiRes/t/HiRes.t |
| 730 | ext/Win32/t/Unicode.t |
| 731 | ext/Win32API-File/t/file.t |
| 732 | ext/Win32CORE/t/win32core.t |
| 733 | lib/AnyDBM_File.t |
| 734 | lib/Archive/Extract/t/01_Archive-Extract.t |
| 735 | lib/Archive/Tar/t/02_methods.t |
| 736 | lib/ExtUtils/t/Embed.t |
| 737 | lib/ExtUtils/t/eu_command.t |
| 738 | lib/ExtUtils/t/MM_Cygwin.t |
| 739 | lib/ExtUtils/t/MM_Unix.t |
| 740 | lib/File/Compare.t |
| 741 | lib/File/Copy.t |
| 742 | lib/File/Find/t/find.t |
| 743 | lib/File/Path.t |
| 744 | lib/File/Spec/t/crossplatform.t |
| 745 | lib/File/Spec/t/Spec.t |
| 746 | lib/Net/hostent.t |
| 747 | lib/Net/Ping/t/110_icmp_inst.t |
| 748 | lib/Net/Ping/t/500_ping_icmp.t |
| 749 | lib/Net/t/netrc.t |
| 750 | lib/Pod/Simple/t/perlcyg.pod |
| 751 | lib/Pod/Simple/t/perlcygo.txt |
| 752 | lib/Pod/Simple/t/perlfaq.pod |
| 753 | lib/Pod/Simple/t/perlfaqo.txt |
| 754 | lib/User/grent.t |
| 755 | lib/User/pwent.t |
| 756 | |
| 757 | =back |
| 758 | |
| 759 | =head1 BUGS ON CYGWIN |
| 760 | |
| 761 | Support for swapping real and effective user and group IDs is incomplete. |
| 762 | On WinNT Cygwin provides C<setuid()>, C<seteuid()>, C<setgid()> and C<setegid()>. |
| 763 | However, additional Cygwin calls for manipulating WinNT access tokens |
| 764 | and security contexts are required. |
| 765 | |
| 766 | =head1 AUTHORS |
| 767 | |
| 768 | Charles Wilson <cwilson@ece.gatech.edu>, |
| 769 | Eric Fifer <egf7@columbia.edu>, |
| 770 | alexander smishlajev <als@turnhere.com>, |
| 771 | Steven Morlock <newspost@morlock.net>, |
| 772 | Sebastien Barre <Sebastien.Barre@utc.fr>, |
| 773 | Teun Burgers <burgers@ecn.nl>, |
| 774 | Gerrit P. Haase <gp@familiehaase.de>, |
| 775 | Reini Urban <rurban@cpan.org>, |
| 776 | Jan Dubois <jand@activestate.com>, |
| 777 | Jerry D. Hedden <jdhedden@cpan.org>. |
| 778 | |
| 779 | =head1 HISTORY |
| 780 | |
| 781 | Last updated: 2012-02-08 |