[ccache] Build problem of qemu>=2.0 when using ccache.

[Joel Rosdahl]

Hi,

> Completely disabling ccache makes the build proceed correctly. Cleaning
the
> ccache caches doesn't help.

Does it work if you disable ccache's direct mode, i.e. if you build with
CCACHE_DIRECT=0?

-- Joel


On 7 August 2014 12:14, marcin kowalski <yoshi314 at gmail.com> wrote:

> Hi all, i (and another user) have been experiencing odd issues when
> building qemu-2.0 or 2.1 with ccache enabled. Systems in question are
> gentoo, 64bit installations with differing gcc versions.
>
> Basically, it seems that build directory is missing some source files, or
> some preprocessing stage before actual compilation is adversely affected by
> ccache - some source files are not placed where build rules are expecting
> them to be, so this does not look like simple cache corruption issue.
>
> Build logs and some more information are available here :
> https://bugs.gentoo.org/show_bug.cgi?id=512484
>
> Completely disabling ccache makes the build proceed correctly. Cleaning the
> ccache caches doesn't help.
>
> I'd like to know how can i more closely narrow down the problem in
> question, since debugging ccache/compilers is not something i am familiar
> with.
>
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