认识达内从这里开始

Cygwin 3.1.0发布了，Cygwin是许多自由软件的集合，最初由Cygnus Solutions开发，用于各种版本的Microsoft Windows上，运行UNIX类系统。Cygwin的主要目的是通过重新编译，将POSIX系统(例如Linux、BSD，以及其他Unix系统)上的软件移植到Windows上。Cygwin移植工作在Windows NT、Windows 2000、Windows XP以及Windows Server 2003上比较好，在Windows 95和Windows 98上，相对差劲一些。目前Cygwin由Red Hat等负责维护。

新版本包括：

* cygwin-3.1.0-1

* cygwin-devel-3.1.0-1

* cygwin-doc-3.1.0-1

该版本包含一些新特性和bug修复，主要有：

- Add 24 bit color support using xterm compatibility mode in Windows 10

1703 or later. Add fake 24 bit color support for legacy console,

which uses the nearest color from 16 system colors.

- Support pseudo console in PTY. Pseudo console is a new feature

in Windows 10 1809, which provides console APIs on virtual

terminal. With this patch, native console applications can work

in PTYs such as mintty, ssh, gnu screen or tmux.

- New APIs: sched_getaffinity, sched_setaffinity, pthread_getaffinity_np,

pthread_setaffinity_np, plus CPU_SET macros.

- New APIs: dbm_clearerr, dbm_close, dbm_delete, dbm_dirfno, dbm_error,

dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store.

What changed:

-------------

- FIFOs can now be opened multiple times for writing.

Addresses: #/ml/cygwin/2015-03/msg00047.html

#/ml/cygwin/2015-12/msg00311.html

- If a SA_SIGINFO signal handler changes the ucontext_t pointed to by

the third parameter, follow it after returning from the handler.

- Eliminate a header file name collision with on case

insensitive filesystems by reverting back to .

- Allow times(2) to have a NULL argument, as on Linux.

Addresses: #/ml/cygwin/2019-09/msg00141.html

- Improve /proc/cpuinfo output and align more closely with Linux.

- Raise stackdump frame limit from 16 to 32.

Addresses: #/ml/cygwin/2019-11/msg00038.html

Bug Fixes

---------

- Fix select() on console in canonical mode. Return after one line is

completed, instead of when only one key is typed.

- Make console I/O functions thread-safe.

- Define missing MSG_EOR. It's unsupported by the underlying Winsock

layer so using it in send(2), sendto(2), or sendmsg(2) will return -1

with errno set to EOPNOTSUPP and recvmsg(2) will never return it.

- Fix a timerfd deadlock.

Addresses: #/ml/cygwin/2019-06/msg00096.html

- Fix sigpending() incorrectly returning signals for unrelated threads.

Addresses: #/ml/cygwin/2019-07/msg00051.html

- Fix a hang when opening a FIFO with O_PATH.

Addresses: #/ml/cygwin-developers/2019-06/msg00001.html

- Don't append ".lnk" when renaming a socket file.

Addresses: #/ml/cygwin/2019-07/msg00139.html

- Make tcsetpgrp() return -1 if its argument is negative.

Addresses: #/ml/cygwin/2019-07/msg00166.html

- Avoid mistakenly moving a process under debugger control into the

process group of the debugger.

Addresses a problem visible in GDB 8.1.1, related to

#/ml/cygwin/2019-07/msg00166.html

- Return ENOEXEC from execve for arbitrary files only if the files are

executable.

Addresses: #/ml/cygwin/2019-08/msg00054.html

- Fix off-by-one in environment evaluation leading to an abort.

Addresses: #/ml/cygwin-patches/2019-q3/msg00069.html

- Make output of /proc/[PID]/stat consistent with getpriority().

Addresses: #/ml/cygwin/2019-08/msg00082.html

- 64 bit only: Avoid collisions between memory maps created with shmat

and Windows datastructures during fork.

Addresses: #/ml/cygwin/2019-08/msg00107.html

- Make rmdir fail if its argument is a symlink.

Addresses: #/ml/cygwin/2019-09/msg00221.html

- Fix an assertion failure on an invalid path.

Addresses: #/ml/cygwin/2019-09/msg00228.html

- If the argument to mkdir(2) or rmdir(2) is 'x:\', don't strip the

trailing backslash.

Addresses: #/ml/cygwin/2019-08/msg00334.html

- Make spawnvp, spawnvpe fail if the executable is not in $PATH.

Addresses: #/ml/cygwin/2019-10/msg00032.html

- Fix parent/child relationship after parent dies.

Addresses: #/ml/cygwin/2019-09/msg00263.html

- Fix a security problem if Cygwin is installed into a path

with spaces in it.

Addresses: #/ml/cygwin/2019-11/msg00018.html

- Fix an assertion failure when /cygdrive contains an offline etwork

drive.

Addresses: #/ml/cygwin/2019-12/msg00016.html

- Fix return value of ilogbl for 0 input.

Addresses: #/ml/cygwin/2019-12/msg00074.html

- Let strtold set errno to ERANGE on underflow per POSIX.

Addresses: #/ml/cygwin/2019-12/msg00072.html

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