|
From: | Stefan Weil |
Subject: | Re: [Qemu-devel] [RFC PATCH] Allow building without graphics support |
Date: | Thu, 13 Dec 2012 07:31:14 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/17.0 Thunderbird/17.0 |
Am 13.12.2012 01:48, schrieb Scott Wood:
On 12/12/2012 12:46:44 AM, Stefan Weil wrote:Am 12.12.2012 04:18, schrieb Scott Wood:QEMU is sometimes used in embedded contexts, where graphical support is unnecessary. The ability to turn off graphics support not only saves some space, but it eliminates the dependency on pixman. Signed-off-by: Scott Wood <address@hidden> --- There are undoubtedly some rough edges that need to be cleaned up andother parts of graphics code that could be compiled out -- this is mainlymeant to see what people think of the concept. My immediate motivation was that the QEMU-supplied pixman was being a pain to cross compile (especially without hacking up the generated QEMU makefiles to pass additional things to pixman's configure), and in general it would be nice to not have to carry around graphical baggagewhen running on hardware that doesn't even have a display (so I was moreinclined to do this than to spend effort fixing the pixman build).Hi, cross compilation works for me with the internal pixman. Here is an example which I use to compile Windows 64 bit executables on Debian: ./configure' '--cross-prefix=amd64-mingw32msvc-' Are there still problems with cross compilation in latest QEMU?It doesn't seem to like my --cross-prefix being a full path rather than being a recognized target pattern:checking host system type... Invalid configuration `/home/scott/fsl/tc/gcc-4.5.55-eglibc-2.11.55/powerpc-linux-gnu/bin/powerpc-linux-gnu': machine `/home/scott/fsl/tc/gcc-4.5.55-eglibc-2.11.55/powerpc-linux-gnu/bin/powerpc' not recognized configure: error: /bin/bash /home/scott/fsl/git/qemu/pixman/config.sub /home/scott/fsl/tc/gcc-4.5.55-eglibc-2.11.55/powerpc-linux-gnu/bin/powerpc-linux-gnu failedmake: *** [pixman/Makefile] Error 1When I forced --host=powerpc-linux into the pixman configure command in QEMU's generated Makefile, it got past that, but it built everything with the native compiler:checking build system type... x86_64-unknown-linux-gnu checking host system type... powerpc-unknown-linux-gnu checking for powerpc-linux-gcc... no checking for gcc... gccLooking a bit more closely, it seems that it's the QEMU rather than pixman's autoconf that is making the bad assumption about the format of --cross-prefix (I really wasn't up for wading in autoconf). Running basename on cross-prefix and explicitly supplying CC and such to pixman would help, though there still should be a way to pass in an explicit host tuple if you have an unusually-named toolchain.-Scott
Indeed, --cross-prefixdoes not support absolute path names. I assume that the executables in/home/scott/fsl/tc/gcc-4.5.55-eglibc-2.11.55/powerpc-linux-gnu/binare without prefix
(gcc, ld, ...). Then there must also be the same executables with prefix(powerpc-linux-gnu-gcc, powerpc-linux-gnu-ld, ...). These must be somewhere in PATH.
Use --cross-prefix=powerpc-linux-gnu-(note the "-" at the end).Then pixman would be configured with --host=powerpc-linux-gnu and should find the compiler. It won't find the compiler powerpc-linux-gcc when its real name is
powerpc-linux-gnu-gcc. -Stefan
[Prev in Thread] | Current Thread | [Next in Thread] |