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[ANNOUNCEMENT] Updated: mingw64-*-{gcc,headers,runtime,pthreads}, New package: mingw64-*-winpthreads

This update includes:



*** NOTES ***

For gcc-4.7.x, struct alignment behavior has changed, -mms-bitfields is
now default, for better MSVC compatibility. This may cause ABI changes
in libraries that expose data structures directly to clients. Workaround
include marking the struct with the gcc_struct attributes.

The pthreads package is now a stub containing only runtime DLL, the
POSIX threads headers and link libraries are now provided by the
winpthreads package.

The mingw64-*-headers package now has winpthreads as a prerequisite as
well, some of the headers from the headers package are overwritten on
purpose by the winpthreads package.


The cross compiler can produce Win32 and Win64 native binaries. As a
cross compiler, you may use --host=i686-w64-mingw32 or
--host=x86_64-w64-mingw32 for autotools based source packages to build
for Windows.


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