Bug 829940 – dev-qt/qtpositioning-5.15.2-r1 fails to compile: x86_64-pc-linux-gnu-g++: error: unrecognized command-line option ‘-Winconsistent-missing-override

• Status: CONFIRMED
• Product: Gentoo Linux

[Description Agostino Sarubbo 2021-12-24 21:24:38 UTC]

https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: dev-qt/qtpositioning-5.15.2-r1 fails to compile.
Discovered on: amd64 (internal ref: tinderbox)

NOTE:
This machine uses clang as a compiler and lld as a linker

[Comment 1 Agostino Sarubbo 2021-12-24 21:24:40 UTC]

Created attachment 760183 [details]
build.log

build log and emerge --info

[Comment 2 Davide Pesavento 2022-01-03 18:03:29 UTC]

It seems that the build system still invokes x86_64-pc-linux-gnu-g++ but with the clang mkspec, thus passing clang-specific flags that cause the error.

How are you specifying the compiler? The build.log says that CXX is unset.

Did you build dev-qt/qtcore with clang?

[Comment 3 Davide Pesavento 2022-01-03 18:03:59 UTC]

*** Bug 830498 has been marked as a duplicate of this bug. ***

[Comment 4 Davide Pesavento 2022-01-03 18:04:15 UTC]

*** Bug 830494 has been marked as a duplicate of this bug. ***

[Comment 5 Davide Pesavento 2022-01-03 18:04:32 UTC]

*** Bug 829941 has been marked as a duplicate of this bug. ***

[Comment 6 Agostino Sarubbo 2022-01-03 20:42:02 UTC]

(In reply to Davide Pesavento from comment #2)
> It seems that the build system still invokes x86_64-pc-linux-gnu-g++ but
> with the clang mkspec, thus passing clang-specific flags that cause the
> error.
> 
> How are you specifying the compiler? The build.log says that CXX is unset.
> 
> Did you build dev-qt/qtcore with clang?

CXX is specified per package. I don't know if qtcore was built with clang or not.

[Comment 7 Olivier van der Toorn 2023-10-01 10:55:33 UTC]

I had the same problem with dev-qt/qtwebsockets:5.

> Did you build dev-qt/qtcore with clang?

Rebuilding dev-qt/qtcore with GCC and then trying qtwebsockets again solved this issue for me.