On 17 March 2015 at 19:59, John Snow <js...@redhat.com> wrote: > On 03/17/2015 03:34 PM, Peter Maydell wrote: >> On 17 March 2015 at 19:30, John Snow <js...@redhat.com> wrote: >>> -Wunused-command-line-argument currently complains about the >>> many include flags passed to each CC incantation
>> Do you see this with really just --cc=clang ? I see these warnings >> if I try to use clang with ccache, but I believe that's a ccache bug. > Not /intentionally/ invoking ccache: > > ../../configure --cc=clang --host-cc=clang --enable-debug > --extra-cflags="-Werror -Wno-unknown-attributes -Wno-parentheses-equality > -Wno-self-assign -Wno-tautological-compare" > > But that's because: > > which clang > /usr/lib64/ccache/clang > > Which is definitely not of my own doing -- seems to be a default in Fedora > 21. Brave of them :-) Supposedly this bug is fixed in ccache 3.2: https://bugzilla.samba.org/show_bug.cgi?id=8118 You can probably work around it by telling QEMU's configure --extra-cflags=-Qunused-arguments or something similar. -- PMM
