203 lines
8.6 KiB
Plaintext
203 lines
8.6 KiB
Plaintext
@section Release Beta 20.1 (Dec 4 1998)
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This is a bug fix update to the Beta 20 release.
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The main change is an improved version of the Cygwin library although
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there are also a couple of other minor changes to the tools.
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@subsection Changes in specific tools:
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The "-mno-cygwin" flag to gcc now include the correct headers. In 20.0,
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it included the Cygwin headers which was incorrect.
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The "-pipe" flag to gcc works correctly now.
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The cygcheck program now reassures users that not finding cpp is the
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correct behavior.
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The "-b" flag to md5sum can now be used to generate correct checksums
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of binary files.
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The libtermcap library has been added to the compiler tools sources.
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It is the new source of the termcap library and /etc/termcap file.
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The less pager (using libtermcap) has been added to the binary
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distribution.
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@subsection Changes in the Cygwin API (cygwin.dll):
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This version of Cygwin is backwards-compatible with the beta 20 and 19
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releases. The library is now much more stable under Windows 9x and the
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bugs affecting configures under 9x (and NT to a lesser extent) have
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also been fixed.
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The bug that made it necessary to start the value of the CYGWIN
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environment variable with two leading spaces has been fixed.
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The serial support in the select call has been fixed.
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Handling of DLLs loaded by non-cygwin apps has been improved. Bugs in
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dlopen have been fixed.
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Passing _SC_CHILD_MAX to the sysconf function now yields CHILD_MAX (63)
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instead of _POSIX_CHILD_MAX (3).
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Several minor path bugs have been fixed. Including the one that
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caused "mkdir a/" to fail.
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The include file sys/sysmacros.h has been added. Added missing protos
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for wcslen and wcscmp to wchar.h.
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__P is now defined in include/sys/cdefs.h. To support that last change,
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the top-level Makefile.in now sets CC_FOR_TARGET and CXX_FOR_TARGET
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differently.
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Cygwin now exports the following newlib bessel functions: j1, jn, y1,
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yn.
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Several tty ioctl options have been added: TCGETA, TCSETA, TCSETAW, and
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TCSETAF.
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Several functions cope with NULL pointer references more gracefully.
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Problems with execution of relative paths via #! should be fixed.
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@section Release Beta 20 (Oct 30 1998)
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This is a significant update to the Beta 19 release. In addition to an
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EGCS-based compiler and updated tools, this release includes a new
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version of the Cygwin library that contains many improvements and
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bugfixes over the last one.
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@subsection The project has a new name!
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Starting with this release, we are retiring the "GNU-Win32" name for the
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releases. We have also dropped the "32" from Cygwin32. This means that
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you should now refer to the tools as "the Cygwin toolset", the library
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as "the Cygwin library" or "the Cygwin DLL", and the library's interface
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as "the Cygwin API".
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Because of this name change, we have changed any aspects of the library
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that involved the name "Cygwin32". For example, the CYGWIN32
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environment variable is now the CYGWIN environment variable. API
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functions starting with cygwin32_ are still available under that form
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for backwards-compatibility as well as under the new cygwin_-prefixed
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names. The same goes for the change of preprocessor define from
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__CYGWIN32__ to __CYGWIN__. We will remove the old names in a future
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release so please take the minute or two that it will take to remove
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those "32"s. Thanks and I apologize for the hassle this may cause
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people. We would have changed the name to "Bob" but that name's already
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taken by Microsoft... :-)
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Why change it? For one thing, not all of the software included in the
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distributions is GNU software, including the Cygwin library itself. So
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calling the project "GNU-Win32" has always been a bit of a misnomer. In
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addition, we think that calling the tools the "Cygwin tools" that use
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the "Cygwin library" will be less confusing to people.
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Also notice that we are now on the spiffy new sourceware.cygnus.com
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web/ftp site. The old address will work for some unknown period of
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time (hopefully at least until we get all of the mirrors adjusted).
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@subsection Changes in specific tools:
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The latest public EGCS release is now the basis for the compiler used
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in Cygwin distributions. As a result, EGCS 1.1 is the compiler in this
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release, with a few additional x86/Cygwin-related patches.
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Those of you who are more interested in native Windows development than
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in porting Unix programs will be glad to know that a new gcc flag
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"-mno-cygwin" will link in the latest Mingw32 libs and produce an
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executable that does not use Cygwin.
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All of the other development tools have been updated to their latest
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versions. The linker (ld) includes many important bug fixes. It is now
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possible to safely strip a DLL with a .reloc section. The windres
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resource compiler is significantly improved.
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Beta 20 also includes upgrades to a number of packages: ash-0.3.2-4,
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bash 2.02.1, grep-2.2, ncurses 4.2, and less 332. We have added bzip2
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0.9.0 to the distribution. And you'll now find that the df utility
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has joined its other friends from the fileutils package.
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The sh executable is still ash from the Debian Linux distribution but no
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longer has the problematic quoting bug that was present in the Beta 19
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release. Control-Cs in the bash shell no longer kill background tasks.
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Tcl/tk are upgraded to version 8.1a2 (with additional patches).
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Compatible versions of tix and itcl are included. These all include
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Cygwin-compatible configury files so you can do a Unix-style build of
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the Win32 ports of tcl/tk. expect has been upgraded to 5.26 with some
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additional Cygwin patches.
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In response to customer requests and feedback, Cygnus has developed a
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better graphical front end to GDB than GDBtk or WinGDB. This tcl-based
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GUI is shipping today to customers of the GNUPro Toolkit. The
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instrumentation changes to GDB and the tcl interpreter that was built
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into GDB are part of the GPL'd source base. But the tcl scripts are not
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being made available to the net at this time. For this reason, you will
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only find a command-line version of gdb in this Cygwin release.
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DJ Delorie has written a new "cygcheck" program that will print out
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useful information about how your Cygwin environment is set up, what
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DLLs a named executable is loading from where, etc. We hope this will
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make it easier to help diagnose common setup problems.
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The ps utility has been upgraded. It now has several options including
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shorter and longer output formats.
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@subsection Changes in the Cygwin API (cygwin.dll):
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This version of Cygwin is backwards-compatible with the beta 19 release.
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You can use the new "cygwin1.dll" with your old B19-compiled executables
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if you move the old "cygwinb19.dll" out of the way and install a copy
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of "cygwin1.dll" as "cygwinb19.dll".
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Quite a lot of the Cygwin internals have been rewritten or modified to
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address various issues. If you have a question about specific changes,
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the winsup/ChangeLog file in the development tools sources lists all
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changes made to the DLL over the last three years. Following are a few
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highlights:
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We are now using a new versioning scheme for Cygwin. There is now a
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separate version number for the DLL, the API, the shared memory region
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interfaces, and the registry interface. This will hopefully make it
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easier for multiple Cygwin toolsets to coexist in one user environment.
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Windows 98 is now supported (it is like Windows 95 from Cygwin's
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perspective). We still recommend upgrading to Windows NT.
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While there is still a lot left to do in improving Cygwin's runtime
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performance, we have put some effort into this prior to the B20 release.
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Hopefully you will find that the latest version of Cygwin is faster than
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ever. In addition, we have plugged several nasty handle leaks
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associated with opening/closing files and with using ttys.
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The lseek call now uses WriteFile to fill gaps with zeros whenever a
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write is done past an EOF, rather than leaving "undefined" data as Win32
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specifies.
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Significant work has been done to improve the Cygwin header files.
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The Cygwin Support for Unix-style serial I/O is much improved.
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Path handling has had another round of fixes/rewrites. We no longer use
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NT Extended Attributes by default for storing Unix permissions/execute
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status because the file NT creates on FAT partitions is not scalable to
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thousands of files (everything slows to a crawl).
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Signal handling has also gotten a fair amount of attention.
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Unfortunately, there are still some problems combining itimers and
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Windows 9x.
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The number of ttys has been upped from 16 to 128.
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New API calls included in the DLL: sethostent, endhostent.
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As mentioned earlier, all cygwin32_-prefixed functions are now exported
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with a cygwin_ prefix instead. Please adjust your code to call the
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newly named functions.
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reads of `slow' devices are now correctly interrupted by signals, i.e.
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a read will receive an EINTR.
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