Bug 381621 – USE=pch x11-libs/qt-webkit-4.7.3 crashes on clang because of PCH incompatibility between compilers

• Status: RESOLVED INVALID
• Product: Gentoo Linux

[Description Aleksander Balicki 2011-09-02 20:48:30 UTC]

USE=pch CC=clang CXX=clang++ emerge -1 qt-webkit 
generates a crash:
error: unable to read PCH file: 'Is a directory'
make: *** [.obj/release-shared/SVGNames.o] Error 1
make: *** Waiting for unfinished jobs....
error: unable to error: read PCH file: 'Is a directory'
unable make: *** [.obj/release-shared/JSSVGElementWrapperFactory.o] Error 1
to read PCH file: 'Is a directory'
make: *** [.obj/release-shared/SVGElementFactory.o] Error 1

Reproducible: Always

[Comment 1 Aleksander Balicki 2011-09-02 20:49:28 UTC]

Created attachment 285383 [details]
build.log

[Comment 2 Mike Gilbert 2011-09-06 02:38:30 UTC]

Please include emerge --info.

[Comment 3 Aleksander Balicki 2011-09-06 09:10:09 UTC]

Created attachment 285691 [details]
emerge --info

[Comment 4 Davide Pesavento (RETIRED) 2011-11-17 23:18:09 UTC]

Did you compile the rest of qt-* with gcc or clang?

[Comment 5 Aleksander Balicki 2011-11-17 23:55:11 UTC]

I was at the moment of compiling everything on clang, but it failed on the first occurence of the PCH.

The problem here is that clang handles PCHs in an other way than gcc.

[Comment 6 Davide Pesavento (RETIRED) 2011-11-17 23:58:43 UTC]

AFAIK clang is not supported on qt 4.7, so I might just close this bug as invalid unless you can provide a patch...

[Comment 7 Davide Pesavento (RETIRED) 2011-11-18 00:00:25 UTC]

...and you can easily disable pch if you want to use clang.