Bug 381621

Summary:	USE=pch x11-libs/qt-webkit-4.7.3 crashes on clang because of PCH incompatibility between compilers
Product:	Gentoo Linux	Reporter:	Aleksander Balicki <balicki.aleksander>
Component:	Current packages	Assignee:	Qt Bug Alias <qt>
Status:	RESOLVED INVALID
Severity:	normal	CC:	voyageur
Priority:	Low
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	build.log emerge --info

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 gentoo-dev

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) gentoo-dev

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) gentoo-dev

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) gentoo-dev

2011-11-18 00:00:25 UTC

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