Remove AT&T UWIN support

UWIN is a UNIX compatibility layer for Windows.  It was last released
in 2012 and has been superseded by Cygwin these days.

15 files changed, 14 insertions, 158 deletions

diff --git a/MANIFEST b/MANIFEST
index ed65e768e8..23d9f0cae1 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -4752,7 +4752,6 @@ hints/unicos.sh			Hints for named architecture
 hints/unicosmk.sh		Hints for named architecture
 hints/unisysdynix.sh		Hints for named architecture
 hints/utekv.sh			Hints for named architecture
-hints/uwin.sh			Hints for named architecture
 hints/vos.sh			Hints for named architecture
 hv.c				Hash value code
 hv.h				Hash value header
diff --git a/Porting/checkURL.pl b/Porting/checkURL.pl
index 2d92ff3c11..a9a031e618 100755
--- a/Porting/checkURL.pl
+++ b/Porting/checkURL.pl
@@ -242,7 +242,6 @@ http://www.pvhp.com/%7epvhp/
 http://www.leo.org
 http://www.madgoat.com
 http://www.mks.com/s390/gnu/
-http://www.research.att.com/sw/tools/uwin/
 http://www.tpj.com/
 http://safaribooksonline.com/
 http://use.perl.org/~autrijus/journal/25768
diff --git a/README.cygwin b/README.cygwin
index 0b737a58f2..ab9814a7d3 100644
--- a/README.cygwin
+++ b/README.cygwin
@@ -595,7 +595,6 @@ be kept as clean as possible.
  regen_lib.pl          - file permissions
 
  plan9/mkfile
- hints/uwin.sh
  vms/descrip_mms.template
  win32/Makefile
 
diff --git a/ext/POSIX/POSIX.xs b/ext/POSIX/POSIX.xs
index 9d9d8a5be2..355c8b6462 100644
--- a/ext/POSIX/POSIX.xs
+++ b/ext/POSIX/POSIX.xs
@@ -1348,11 +1348,11 @@ static NV_PAYLOAD_TYPE S_getpayload(NV nv)
 #include <fcntl.h>
 
 #ifdef HAS_TZNAME
-#  if !defined(WIN32) && !defined(__CYGWIN__) && !defined(__UWIN__)
+#  if !defined(WIN32) && !defined(__CYGWIN__)
 extern char *tzname[];
 #  endif
 #else
-#if !defined(WIN32) && !defined(__UWIN__) || (defined(__MINGW32__) && !defined(tzname))
+#if !defined(WIN32) || (defined(__MINGW32__) && !defined(tzname))
 char *tzname[] = { "" , "" };
 #endif
 #endif
diff --git a/ext/POSIX/lib/POSIX.pm b/ext/POSIX/lib/POSIX.pm
index 844eb9b968..8b71721c6b 100644
--- a/ext/POSIX/lib/POSIX.pm
+++ b/ext/POSIX/lib/POSIX.pm
@@ -4,7 +4,7 @@ use warnings;
 
 our ($AUTOLOAD, %SIGRT);
 
-our $VERSION = '2.01';
+our $VERSION = '2.02';
 
 require XSLoader;
 
diff --git a/ext/POSIX/t/posix.t b/ext/POSIX/t/posix.t
index 4a0d1f34f7..f200a895bd 100644
--- a/ext/POSIX/t/posix.t
+++ b/ext/POSIX/t/posix.t
@@ -27,7 +27,6 @@ $| = 1;
 $Is_W32     = $^O eq 'MSWin32';
 $Is_VMS     = $^O eq 'VMS';
 $Is_OS2     = $^O eq 'os2';
-$Is_UWin    = $^O eq 'uwin';
 $Is_OS390   = $^O eq 'os390';
 
 my $vms_unix_rpt = 0;
@@ -468,7 +467,7 @@ if ($^O eq 'vos') {
 } else {
  $| = 0;
  # The following line assumes buffered output, which may be not true:
- print '@#!*$@(!@#$' unless ($Is_OS2 || $Is_UWin || $Is_OS390 ||
+ print '@#!*$@(!@#$' unless ($Is_OS2 || $Is_OS390 ||
                             $Is_VMS ||
 			    (defined $ENV{PERLIO} &&
 			     $ENV{PERLIO} eq 'unix' &&
diff --git a/hints/uwin.sh b/hints/uwin.sh
deleted file mode 100644
index 0c70b529cb..0000000000
--- a/hints/uwin.sh
+++ /dev/null
@@ -1,134 +0,0 @@
-#
-# The lines starting with #b that follow are the uwin.sh
-# file from Joe Buehler.  Some lines are, themselves,
-# commented out.  If an uncommented line disappears
-# altogether, it means it didn't seem to be needed any more,
-# to get a proper build on the following machine.
-#    UWIN-NT korn-7200 3.19-5.0 2195 i686
-# But maybe they'll be useful to others on different machines.
-
-#b # hint file for U/WIN (UNIX for Windows 95/NT)
-#b #
-#b # created for U/WIN version 1.55
-#b # running under Windows NT 4.0 SP 3
-#b # using MSVC++ 5.0 for the compiler
-#b #
-#b # created by Joe Buehler (jbuehler@hekimian.com)
-#b #
-#b # for information about U/WIN see www.gtlinc.com
-#b #
-#b 
-#b #ccflags=-D_BSDCOMPAT
-#b # confusion in Configure over preprocessor
-#b cppstdin=`pwd`/cppstdin
-#b cpprun=`pwd`/cppstdin
-#b # pwd.h confuses Configure
-#b d_pwcomment=undef
-#b d_pwgecos=define
-#b # work around case-insensitive file names
-#b firstmakefile=GNUmakefile
-#b # avoid compilation error
-#b i_utime=undef
-#b # compile/link flags
-#b ldflags=-g
-#b optimize=-g
-#b static_ext="B Data/Dumper Digest/MD5 Errno Fcntl Filter::Util::Call IO IPC/SysV MIME::Base64 Opcode PerlIO::scalar POSIX SDBM_File Socket Storable Unicode::Collate Unicode::Normalize attributes re"
-#b #static_ext=none
-#b # dynamic loading needs work
-#b usedl=undef
-#b # perl malloc will not work
-#b usemymalloc=n
-#b # cannot use nm
-#b usenm=undef
-#b # vfork() is buggy (as of 1.55 anyway)
-#b usevfork=false
-
-# __UWIN__ added so it could be used in ext/POSIX/POSIX.xs
-# to protect against either tzname definition.  According to Dave Korn
-
-#dgk gcc on uwin also predefined _UWIN as does the digital mars compiler.
-#dgk 
-#dgk Only ncc does not define _UWIN and this is intentional.  ncc is used
-#dgk to build binaries that do not require the uwin runtime.
-#dgk This could be used for building a native win32 perl using unix
-#dgk makefiles.  However, in this case you don't wan't _UWIN defined.
-#dgk 
-#dgk I have used _UWIN everywhere else in any uwin specific changes.
-#dgk and _WIN32 on windows specific changes, and _MSVC on any compiler
-#dgk Visual C specific changes.  We also define _WINIX for any unix
-#dgk on windows implementation so that _UWIN or __cygwin__ imply _WINIX.
-
-# I left __UWIN__ as is, since I had already filed a patch,
-# and it might be useful to distinguish perl-specific tweaks
-# from generic uwin ones.
-
-ccflags="$ccflags -D__UWIN__"
-
-# This from Dave Korn
-#dgk Windows splits shared libraries into two parts; the part used
-#dgk for linking and the part that is used for running.
-#dgk Given a library foo, then the part you link with is named
-#dgk	foo.lib
-#dgk and is in the lib directory.  The part that you run with
-#dgk is named
-#dgk	foo.dll or foo#.dll
-#dgk and is in the bin directory.  This way when you set you PATH
-#dgk variable, it automatically does the library search.
-#dgk
-#dgk Static libraries use libfoo.a.
-#dgk By the way if you specify -lfoo, then it will first look for foo.lib
-#dgk and then libfoo.a.  If you specify +lfoo, it will only look for
-#dgk static versions of the library.
-
-# So we use .lib as the extension, and put -lm in, because it is a .a
-# This probably accounts for the comment about dynamic libraries
-# needing work, and indeed, the build failed if I didn't undef it.
-
-lib_ext=".lib"
-libs="-lm"
-so=dll
-# dynamic loading still needs work
-usedl=undef
-
-# confusion in Configure over preprocessor
-cppstdin=`pwd`/cppstdin
-cpprun=`pwd`/cppstdin
-
-# lest it default to .exe, and then there's no perl in the test directory,
-# t, just a perl.exe, and make test promptly dies.  _exe gets set to .exe
-# by Configure (on 5/23/2003) if exe_ext is merely null, so clean it out, too.
-exe_ext=''
-_exe=''
-
-# work around case-insensitive file names
-firstmakefile=GNUmakefile
-# compile/link flags
-ldflags=-g
-optimize=-g
-
-# Original, with :: separators, cause make to choke.
-# No longer seems to be necessary at all.
-# static_ext="B Data/Dumper Digest/MD5 Errno Fcntl Filter/Util/Call IO IPC/SysV MIME/Base64 Opcode PerlIO/scalar POSIX SDBM_File Socket Storable Unicode/Collate Unicode/Normalize attributes re"
-
-# perl malloc will not work
-usemymalloc=n
-# cannot use nm
-usenm=undef
-# vfork() is buggy (as of 1.55 anyway)
-usevfork=false
-
-# Some other comments:
-# If you see something like
-
-#          got: '/E/users/jpl/src/cmd/perl/t'
-#     expected: '/e/users/jpl/src/cmd/perl/t'
-#     Failed test (../dist/Cwd/t/cwd.t at line 88)
-
-# when running tests under harness, try the simple expedient of
-# changing to directory
-#     /E/users/jpl/src/cmd/perl/t   # note the leading capital /E
-# before running the tests.  UWIN is a bit schizophrenic about case.
-# It likes to return an uppercase "disk" letter for the leading directory,
-# but your home directory may well have that in lower case.
-# In most cases, they are entirely interchangeable, but the perl tests
-# don't ignore case.  If they fail, change to the directory they expect.
diff --git a/installman b/installman
index 0154be4d68..686862d8c4 100755
--- a/installman
+++ b/installman
@@ -154,7 +154,7 @@ sub pod2man {
 	    next;
 	}
 
-	if ($^O eq 'os2' || $^O eq 'amigaos' || $^O eq 'uwin' || $^O eq 'cygwin') {
+	if ($^O eq 'os2' || $^O eq 'amigaos' || $^O eq 'cygwin') {
             $manpage =~ s#::#.#g;
 	}
         my $tmp = "${mandir}/${manpage}.tmp";
diff --git a/makedepend_file.SH b/makedepend_file.SH
index 51f5191fe9..b90f741ee1 100644
--- a/makedepend_file.SH
+++ b/makedepend_file.SH
@@ -65,7 +65,6 @@ amigaos) cat=/bin/cat ;; # must be absolute
 esac
 
     case "$osname" in
-    uwin)     uwinfix="-e s,\\\\\\\\,/,g -e s,\\([a-zA-Z]\\):/,/\\1/,g" ;;
     os2)      uwinfix="-e s,\\\\\\\\,/,g" ;;
     cygwin)   uwinfix="-e s,\\\\\\\\,/,g" ;;
     posix-bc) uwinfix="-e s/\\*POSIX(\\(.*\\))/\\1/" ;;
diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 0ff5544cd4..c2327b2ee5 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -321,6 +321,11 @@ DJGPP is a port of the GNU toolchain to 32-bit x86 systems running
 DOS.  The last known attempt to build Perl on it was on 5.20, which
 only got as far as building miniperl.
 
+=item AT&T UWIN
+
+UWIN is a UNIX compatibility layer for Windows.  It was last released
+in 2012 and has been superseded by Cygwin these days.
+
 =back
 
 =head2 Platform-Specific Notes
diff --git a/pod/perlport.pod b/pod/perlport.pod
index d8a5f5b7c2..5c75af99bd 100644
--- a/pod/perlport.pod
+++ b/pod/perlport.pod
@@ -1036,11 +1036,6 @@ as L<perlcygwin>), L<https://www.cygwin.com/>
 
 =item *
 
-The U/WIN environment for Win32,
-L<http://www.research.att.com/sw/tools/uwin/>
-
-=item *
-
 Build instructions for OS/2, L<perlos2>
 
 =back
@@ -2362,6 +2357,8 @@ as of 5.36:
 
 =item DOS/DJGPP
 
+=item AT&T UWIN
+
 =back
 
 =head2 (Perl 5.20)
diff --git a/t/io/layers.t b/t/io/layers.t
index 7938c39231..1c1ac4fd4c 100644
--- a/t/io/layers.t
+++ b/t/io/layers.t
@@ -20,7 +20,6 @@ BEGIN {
 use Config;
 
 my $DOSISH    = $^O =~ /^(?:MSWin32|os2)$/ ? 1 : 0;
-   $DOSISH    = 1 if !$DOSISH and $^O =~ /^uwin/;
 my $NONSTDIO  = exists $ENV{PERLIO} && $ENV{PERLIO} ne 'stdio'     ? 1 : 0;
 my $FASTSTDIO = $Config{d_faststdio} && $Config{usefaststdio}      ? 1 : 0;
 my $UTF8_STDIN;
diff --git a/t/io/tell.t b/t/io/tell.t
index e93dc57b29..3e156636c4 100644
--- a/t/io/tell.t
+++ b/t/io/tell.t
@@ -11,8 +11,7 @@ plan(36);
 $TST = 'TST';
 
 $Is_Dosish = ($^O eq 'MSWin32' or
-              $^O eq 'os2' or $^O eq 'cygwin' or
-              $^O =~ /^uwin/);
+              $^O eq 'os2' or $^O eq 'cygwin');
 
 open($TST, 'harness') || (die "Can't open harness");
 binmode $TST if $Is_Dosish;
diff --git a/t/loc_tools.pl b/t/loc_tools.pl
index a9266ab374..46db3dce5f 100644
--- a/t/loc_tools.pl
+++ b/t/loc_tools.pl
@@ -388,9 +388,6 @@ sub find_locales ($;$) {
     return if (($^O eq 'MSWin32' && !$winxp)
                 && $Config{cc} =~ /^(cl|gcc|g\+\+|ici)/i);
 
-    # UWIN seems to loop after taint tests, just skip for now
-    return if ($^O =~ /^uwin/);
-
     my @Locale;
     _trylocale("C", \@categories, \@Locale, $allow_incompatible);
     _trylocale("POSIX", \@categories, \@Locale, $allow_incompatible);
diff --git a/t/op/chdir.t b/t/op/chdir.t
index b9df30d40a..44bc90f14d 100644
--- a/t/op/chdir.t
+++ b/t/op/chdir.t
@@ -29,9 +29,7 @@ use File::Spec::Functions qw(:DEFAULT splitdir rel2abs splitpath);
 # Can't use Cwd::abs_path() because it has different ideas about
 # path separators than File::Spec.
 sub abs_path {
-    my $d = rel2abs(curdir);
-    $d = lc($d) if $^O =~ /^uwin/;
-    $d;
+    return rel2abs(curdir);
 }
 
 my $Cwd = abs_path;