On 13.02.2015 15:40, Andre Przywara wrote: > Ciao Claudio, > > On 13/02/15 14:30, Claudio Fontana wrote: >> Hello Andre, >> >> On 13.02.2015 11:39, Andre Przywara wrote: >>> Hi, >>> >>> as I found it increasingly inconvenient to use kvmtool[1] as part of a >>> Linux repository, I decided to give it a go and make it a stand-alone >>> project. So I filtered all the respective commits, adjusted the paths in >>> there (while keeping authorship and commit date, of course) and then >>> added the missing bits to let it compile without a kernel tree nearby. >>> The result is now available on: >>> >>> git://linux-arm.org/kvmtool.git >>> http://linux-arm.org/kvmtool.git >> >> It builds fine on x86_64, but when I tried to crosscompile from x86_64 to AArch64, >> I get in trouble because of libfdt: I have the aarch64 libs (static and shared), but how do I instruct the build system to get it from the right place? > > You have to install them into your cross-compiler's SYSROOT. > Get the location of that by executing > $ ${CROSS_COMPILE}gcc -print-sysroot. > If it's just for libfdt, it's probably the easiest to copy them > manually, the header files into $SYSROOT/usr/include, the libraries into > $SYSROOT/usr/lib/aarch64-linux-gnu > That fixed it for me ;-) Thanks! > > For a more robust approach you would use your distribution's packaging > system to install the aarch64 package into $SYSROOT. > > Cheers, > Andre. I still prefer to be forced to understand things so I actually prefer the manual route. Ciao, Claudio >> >>> >>> You can simply check it out, type make and use "./lkvm run" for a quick >>> test. So far I briefly tested x86-64, arm and arm64, the later two were >>> also cross-compiled. For sure there are rough edges in there (for >>> instance copying a few non-uapi header files into), but I deem it worthy >>> enough to get some public comments. >>> For me that also fixed some nasty warnings about libfdt, which now are >>> gone due it using your system library version of it. >>> I also managed to get rid of the libc-i386-dev dependency when compiling >>> for x86-64, but that still needs to be cleaned up and thus is not in the >>> current HEAD. >>> I haven't got around to compile-test the other supported architectures, >>> but supporting them should be as easy as copying over the uapi kvm.h >>> header file (see the respective ARM commit). Contributions (and tests!) >>> are welcome. >>> >>> Please give it a go and tell me what you think. I don't want to fork the >>> project, so I am happy if someone "official" picks it up. >>> >>> Cheers, >>> Andre. >>> >>> [1] https://github.com/penberg/linux-kvm/tree/master/tools/kvm >>> _______________________________________________ >>> kvmarm mailing list >>> kvmarm@xxxxxxxxxxxxxxxxxxxxx >>> https://lists.cs.columbia.edu/mailman/listinfo/kvmarm >>> >> >> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
