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Jonathan Wakely e20486d508 libstdc++: Define _GNU_SOURCE for secure_getenv on Cygwin [PR104217] 
For GNU/Linux G++ defines _GNU_SOURCE automatically, but not for Cygwin.
This means secure_getenv is not declared by Cygwin's <stdlib.h>, even
though autoconf detected it is present in the library. Define it in the
source files that want to use secure_getenv.

libstdc++-v3/ChangeLog:

	PR libstdc++/104217
	* src/c++17/fs_ops.cc (_GNU_SOURCE): Define.
	* src/filesystem/dir.cc (_GNU_SOURCE): Define.
	* src/filesystem/ops.cc (_GNU_SOURCE): Define.
2022-01-25 21:05:16 +00:00
..
config
libstdc++: Add %j, %U, %w, %W time_get support, fix %y, %Y, %C, %p [PR77760]
2022-01-10 15:38:47 +01:00
doc
libstdc++: Update documentation for C++17 deprecations
2022-01-19 00:58:26 +00:00
include
libstdc++: Fix std::spanstream move assignment [PR104032]
2022-01-23 22:48:33 +00:00
libsupc++
libstdc++: Ensure all feature test macros have type long [PR87193]
2022-01-21 16:07:34 +00:00
po
libstdc++: Define <stacktrace> header for C++23
2022-01-17 12:13:02 +00:00
python
libstdc++: Define <stacktrace> header for C++23
2022-01-17 12:13:02 +00:00
scripts
libstdc++: Only add valid -L paths to testsuite linker options
2022-01-20 12:29:29 +00:00
src
libstdc++: Define _GNU_SOURCE for secure_getenv on Cygwin [PR104217]
2022-01-25 21:05:16 +00:00
testsuite
libstdc++: Fix std::spanstream move assignment [PR104032]
2022-01-23 22:48:33 +00:00
acinclude.m4
libstdc++: Avoid symlink race in filesystem::remove_all [PR104161]
2022-01-25 21:05:15 +00:00
aclocal.m4
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ChangeLog
Daily bump.
2022-01-24 00:16:28 +00:00
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ChangeLog-2021
Rotate ChangeLog files - part 1 - add ChangeLog-2021.
2022-01-03 10:18:16 +01:00
config.h.in
libstdc++: Avoid symlink race in filesystem::remove_all [PR104161]
2022-01-25 21:05:15 +00:00
configure
libstdc++: Avoid symlink race in filesystem::remove_all [PR104161]
2022-01-25 21:05:15 +00:00
configure.ac
libstdc++: Remove -gdwarf-4 from flags for debug library
2022-01-19 19:31:00 +00:00
configure.host
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crossconfig.m4
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fragment.am
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linkage.m4
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Makefile.am
Update copyright years.
2022-01-03 10:42:10 +01:00
Makefile.in
libstdc++: Define <stacktrace> header for C++23
2022-01-17 12:13:02 +00:00
README
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README 

file: libstdc++-v3/README

New users may wish to point their web browsers to the file
index.html in the 'doc/html' subdirectory.  It contains brief
building instructions and notes on how to configure the library in
interesting ways.