Bug 631460

Summary:	sys-devel/gcc: when installed for mingw-w64 there is no official way to set 'Thread model: posix'
Product:	Gentoo Linux	Reporter:	hanetzer
Component:	Current packages	Assignee:	Gentoo Toolchain Maintainers <toolchain>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	bob.mt.wya, carlphilippreh, nik_cro, nrndda, rkitover, theli.ua
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=665512 https://bugs.gentoo.org/show_bug.cgi?id=914741
Whiteboard:
Package list:		Runtime testing required:	---

Description hanetzer 2017-09-20 04:17:10 UTC

When installing a mingw-w64 toolchain (for example, via
`crossdev i686-w64-mingw32` or the like) one will end up with:

i686-w64-mingw32-gcc -v
Using built-in specs.
COLLECT_GCC=i686-w64-mingw32-gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-w64-mingw32/6.4.0/lto-wrapper
Target: i686-w64-mingw32
Configured with: .....
Thread model: win32
gcc version 6.4.0 (Gentoo 6.4.0 p1.0)

One can manually use `EXTRA_ECONF="--enable-threads=posix" emerge -1 cross-i686-w64-mingw32/gcc` after rebuilding cross-i686-w64-mingw32/mingw64-runtime with USE=libraries (to get the pthread dlls) in order to obtain 'Thread model: posix'

It would be of use to either provide a USE flag for sys-devel/gcc to enable posix threads for mingw-w64 or just explicitly set the configure flag after the initial bootstrap.

Comment 1 Sergei Trofimovich (RETIRED) gentoo-dev

2021-01-03 12:50:05 UTC

*** Bug 760018 has been marked as a duplicate of this bug. ***

Comment 2 Sergei Trofimovich (RETIRED) gentoo-dev

2021-01-03 12:51:53 UTC

*** Bug 669856 has been marked as a duplicate of this bug. ***

Comment 3 Ionen Wolkens gentoo-dev

2021-01-24 09:53:51 UTC

*** Bug 766821 has been marked as a duplicate of this bug. ***

Comment 4 Andreas K. Hüttel archtester

2023-08-23 17:35:44 UTC

Is this still relevant?

Comment 5 tt_1 2023-10-18 07:23:16 UTC

(In reply to Andreas K. Hüttel from comment #4)
> Is this still relevant?

Yes it is, for instance if you want to build a mingw-toolchain to build dxvk libs. There is mingw64-toolchain as well, but if you were to use an old non-x86 server as a build-bot, you've still got to intervene manually. 

Maybe a masked useflag for gcc can be helpfull?