[yocto] Failed to cross compile kernel with Yocto toolchain

Khem Raj raj.khem at gmail.com
Fri Jul 1 07:30:47 PDT 2016 

you can try to set HOSTCC=/usr/bin/gcc along when you call make may be
via EXTRA_OEMAKE, problem you have is that kernel is expecting gcc to
be used for host utilties and ccache has overrides for gcc which may
not be working in all situations. Ideally you should just uninstall
ccache from your build host.

On Fri, Jul 1, 2016 at 1:45 AM, Zhenhua Luo <zhenhua.luo at nxp.com> wrote:
> Thanks a lot for your comments, Daniel.
>
> Can somebody please shed light on how to fix the issue in Yocto recipes?
>
>
> Best Regards,
>
> Zhenhua
>
>> -----Original Message-----
>> From: Daniel. [mailto:danielhilst at gmail.com]
>> Sent: Friday, July 01, 2016 4:48 AM
>> To: Zhenhua Luo <zhenhua.luo at nxp.com>
>> Cc: Khem Raj <raj.khem at gmail.com>; yocto at yoctoproject.org
>> Subject: Re: [yocto] Failed to cross compile kernel with Yocto toolchain
>>
>> The problem is that ccache is not finding the compiler after environment-
>> setup*.sh is sourced.Your error message can be foud at:
>> https://github.com/ccache/ccache/blob/master/ccache.c#L2075. It seems that
>> its searching for "gcc" when I though that kernel would search for
>> "${CROSS_COMPILE}gcc"
>>
>> 2016-06-29 22:54 GMT-03:00 Zhenhua Luo <zhenhua.luo at nxp.com>:
>> > I think you mean /usr/lib64/ccache/gcc instead of /usr/lib64/gcc, it is a valid
>> link.
>> >
>> > $ source /opt/poky/2.1+snapshot/environment-setup-ppce500mc-poky-
>> linux
>> > $ which gcc
>> > /usr/lib64/ccache/gcc
>> > $
>> > $ ls -l /usr/lib64/ccache/gcc
>> > lrwxrwxrwx 1 root root 16 Jun 29 18:22 /usr/lib64/ccache/gcc ->
>> > ../../bin/ccache $ ls -l /usr/bin/ccache -rwxr-xr-x 1 root root 128584
>> > Jan 26 14:58 /usr/bin/ccache $
>> >
>> >
>> > Best Regards,
>> >
>> > Zhenhua
>> >
>> >> -----Original Message-----
>> >> From: Daniel. [mailto:danielhilst at gmail.com]
>> >> Sent: Wednesday, June 29, 2016 8:14 PM
>> >> To: Zhenhua Luo <zhenhua.luo at nxp.com>
>> >> Cc: Khem Raj <raj.khem at gmail.com>; yocto at yoctoproject.org
>> >> Subject: Re: [yocto] Failed to cross compile kernel with Yocto
>> >> toolchain
>> >>
>> >> Is /usr/lib64/gcc a file or a link? Is it a valid link?
>> >>
>> >> 2016-06-29 5:52 GMT-03:00 Zhenhua Luo <zhenhua.luo at nxp.com>:
>> >> > The /usr/lib64/ccache is added in PATH by /etc/profile.d/ccache.sh
>> >> > when ccache is installed on Fedora host, the issue disappears if
>> >> > one of the following changes is done.
>> >> >
>> >> > 1.       Remove /usr/lib64/ccache from PATH
>> >> >
>> >> > 2.       Move /usr/lib64/ccache after /usr/bin in PATH
>> >> >
>> >> > 3.       Set CCACHE_PATH equals to PATH
>> >> >
>> >> > 4.       Unset CCACHE_PATH
>> >> >
>> >> >
>> >> >
>> >> > Another observation, before sourcing
>> >> > environment-setup-<core>-poky-linux,
>> >> > gcc can be found even if /usr/lib64/ccache is in prepend to PATH,
>> >> > but after sourcing the environment-setup-<core>-poky-linux script,
>> >> > the gcc can’t be found, this should be a bug of the
>> >> > environment-setup-<core>-poky-linux
>> >> > script. Should I open a Bugzilla ticket to track it?
>> >> >
>> >> >
>> >> >
>> >> > $ echo $PATH
>> >> >
>> >> > /usr/lib64/qt-3.3/bin:/usr/lib64/ccache:/usr/local/bin:/usr/bin:/us
>> >> > r/l
>> >> > ocal/sbin:/usr/sbin:/home/bjsimics/.local/bin:/home/bjsimics/bin
>> >> >
>> >> > which gcc
>> >> >
>> >> > /usr/lib64/ccache/gcc
>> >> >
>> >> > $ gcc -v
>> >> >
>> >> > Using built-in specs.
>> >> >
>> >> > COLLECT_GCC=/usr/bin/gcc
>> >> >
>> >> > COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/5.3.1/lto-
>> >> wra
>> >> > pper
>> >> >
>> >> > Target: x86_64-redhat-linux
>> >> >
>> >> > Configured with: ../configure --enable-bootstrap
>> >> > --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto
>> >> > --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info
>> >> > --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
>> >> > --enable-threads=posix --enable-checking=release --enable-multilib
>> >> > --with-system-zlib --enable-__cxa_atexit
>> >> > --disable-libunwind-exceptions --enable-gnu-unique-object
>> >> > --enable-linker-build-id --with-linker-hash-style=gnu
>> >> > --enable-plugin --enable-initfini-array --disable-libgcj
>> >> > --with-default-libstdcxx-abi=gcc4-compatible --with-isl
>> >> > --enable-libmpx --enable-gnu-indirect-function --with-tune=generic
>> >> > --with-arch_32=i686 --build=x86_64-redhat-linux
>> >> >
>> >> > Thread model: posix
>> >> >
>> >> > gcc version 5.3.1 20160406 (Red Hat 5.3.1-6) (GCC)
>> >> >
>> >> > $
>> >> >
>> >> > $ source /opt/poky/2.1+snapshot/environment-setup-ppce500mc-poky-
>> >> linux
>> >> >
>> >> > $
>> >> >
>> >> > $ echo $PATH
>> >> >
>> >> > /opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-linux/usr/bin:/opt/p
>> >> > oky
>> >> > /2.1+snapshot/sysroots/x86_64-pokysdk-linux/usr/sbin:/opt/poky/2.1+
>> >> > sna
>> >> > pshot/sysroots/x86_64-pokysdk-linux/bin:/opt/poky/2.1+snapshot/sysr
>> >> > oot
>> >> > s/x86_64-pokysdk-linux/sbin:/opt/poky/2.1+snapshot/sysroots/x86_64-
>> >> > pok
>> >> > ysdk-linux/usr/bin/../x86_64-pokysdk-linux/bin:/opt/poky/2.1+snapsh
>> >> > ot/
>> >> > sysroots/x86_64-pokysdk-linux/usr/bin/powerpc-poky-linux:/opt/poky/
>> >> > 2.1
>> >> > +snapshot/sysroots/x86_64-pokysdk-linux/usr/bin/powerpc-poky-linux-
>> >> > +ucl
>> >> > ibc:/opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-linux/usr/bin/po
>> >> > wer
>> >> > pc-poky-linux-musl:/usr/lib64/qt-3.3/bin:/usr/lib64/ccache:/usr/loc
>> >> > al/
>> >> > bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/bjsimics/.local/bin:/h
>> >> > ome
>> >> > /bjsimics/bin
>> >> >
>> >> > $
>> >> >
>> >> > $ which gcc
>> >> >
>> >> > /usr/lib64/ccache/gcc
>> >> >
>> >> > $ gcc -v
>> >> >
>> >> > ccache: error: Could not find compiler "gcc" in PATH
>> >> >
>> >> > $
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > Best Regards,
>> >> >
>> >> >
>> >> >
>> >> > Zhenhua
>> >> >
>> >> >
>> >> >
>> >> > From: Khem Raj [mailto:raj.khem at gmail.com]
>> >> > Sent: Tuesday, June 28, 2016 10:48 PM
>> >> > To: Zhenhua Luo <zhenhua.luo at nxp.com>
>> >> > Cc: yocto at yoctoproject.org
>> >> > Subject: RE: [yocto] Failed to cross compile kernel with Yocto
>> >> > toolchain
>> >> >
>> >> >
>> >> >
>> >> > /usr/lib64/ccache is unusual why do you have it in path and if you
>> >> > really need it add it after all other paths. Check your env first
>> >> >
>> >> >
>> >> >
>> >> > On Jun 27, 2016 10:56 PM, "Zhenhua Luo" <zhenhua.luo at nxp.com> wrote:
>> >> >
>> >> > Hello Khem,
>> >> >
>> >> >
>> >> >> -----Original Message-----
>> >> >> From: Khem Raj [mailto:raj.khem at gmail.com]
>> >> >> Sent: Tuesday, June 28, 2016 12:36 AM
>> >> >> To: Zhenhua Luo <zhenhua.luo at nxp.com>
>> >> >> Cc: yocto at yoctoproject.org
>> >> >> Subject: Re: [yocto] Failed to cross compile kernel with Yocto
>> >> >> toolchain
>> >> >>
>> >> >> On Mon, Jun 27, 2016 at 1:16 AM, Zhenhua Luo <zhenhua.luo at nxp.com>
>> >> >> wrote:
>> >> >> > Hello all,
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > I generate the Yocto toolchain by “bitbake meta-toolchain”, and
>> >> >> > use this toolchain to cross-compile kernel, I met the following error.
>> >> >> > Is this a bug or I missed something? My host Linux is Fedora 22.
>> >> >>
>> >> >> its better to start using bitbake -cpopulate_sdk <image name> to
>> >> >> generate SDKs.
>> >> >>
>> >> >>
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > $ source
>> >> >> > /opt/poky/2.1+snapshot/environment-setup-ppce500mc-poky-
>> >> >> linux
>> >> >> >
>> >> >> > $ cd linux/
>> >> >> >
>> >> >> > $ make corenet32_smp_defconfig
>> >> >> >
>> >> >> >   HOSTCC  scripts/kconfig/conf.o
>> >> >> >
>> >> >> > ccache: error: Could not find compiler "gcc" in PATH
>> >> >>
>> >> >> did you see if gcc is in your path after sourcing SDK env script?
>> >> >
>> >> > [Luo Zhenhua-B19537] gcc can't be found after sourcing the SDK env script.
>> >> > but the /usr/bin is in the PATH env variable.
>> >> > $ source /opt/poky/2.1+snapshot/environment-setup-ppce500mc-poky-
>> >> linux
>> >> > $ echo $PATH
>> >> > /opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-linux/usr/bin:/opt/p
>> >> > oky
>> >> > /2.1+snapshot/sysroots/x86_64-pokysdk-linux/usr/sbin:/opt/poky/2.1+
>> >> > sna
>> >> > pshot/sysroots/x86_64-pokysdk-linux/bin:/opt/poky/2.1+snapshot/sysr
>> >> > oot
>> >> > s/x86_64-pokysdk-linux/sbin:/opt/poky/2.1+snapshot/sysroots/x86_64-
>> >> > pok
>> >> > ysdk-linux/usr/bin/../x86_64-pokysdk-linux/bin:/opt/poky/2.1+snapsh
>> >> > ot/
>> >> > sysroots/x86_64-pokysdk-linux/usr/bin/powerpc-poky-linux:/opt/poky/
>> >> > 2.1
>> >> > +snapshot/sysroots/x86_64-pokysdk-linux/usr/bin/powerpc-poky-linux-
>> >> > +ucl
>> >> > ibc:/opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-linux/usr/bin/po
>> >> > wer
>> >> > pc-poky-linux-musl:/usr/lib64/qt-3.3/bin:/usr/lib64/ccache:/usr/loc
>> >> > al/
>> >> > bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/bjsimics/.local/bin:/h
>> >> > ome
>> >> > /bjsimics/bin
>> >> > $ echo $CCACHE_PATH
>> >> > /opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-
>> >> linux/usr/bin:/opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-
>> >> linux/usr/bin/../x86_64-pokysdk-
>> >> linux/bin:/opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-
>> >> linux/usr/bin/powerpc-poky-linux:/opt/poky/2.1+snapshot/sysroots/x86_
>> >> 64-
>> >> pokysdk-linux/usr/bin/powerpc-poky-linux-
>> >> uclibc:/opt/poky/2.1+snapshot/sysroots/x86_64-pokysdk-
>> >> linux/usr/bin/powerpc-poky-linux-musl:
>> >> > $ which gcc
>> >> > /usr/lib64/ccache/gcc
>> >> > $ gcc -v
>> >> >
>> >> > ccache: error: Could not find compiler "gcc" in PATH
>> >> >
>> >> > Best Regards,
>> >> >
>> >> > Zhenhua
>> >> >
>> >> >
>> >> >> > scripts/Makefile.host:108: recipe for target 'scripts/kconfig/conf.o'
>> >> >> > failed
>> >> >> >
>> >> >> > make[1]: *** [scripts/kconfig/conf.o] Error 1
>> >> >> >
>> >> >> > Makefile:541: recipe for target 'corenet32_smp_defconfig' failed
>> >> >> >
>> >> >> > make: *** [corenet32_smp_defconfig] Error 2
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > Best Regards,
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > Zhenhua
>> >> >> >
>> >> >> >
>> >> >> > --
>> >> >> > _______________________________________________
>> >> >> > yocto mailing list
>> >> >> > yocto at yoctoproject.org
>> >> >> > https://lists.yoctoproject.org/listinfo/yocto
>> >> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > --
>> >> > _______________________________________________
>> >> > yocto mailing list
>> >> > yocto at yoctoproject.org
>> >> > https://lists.yoctoproject.org/listinfo/yocto
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> "Do or do not. There is no try"
>> >>   Yoda Master
>>
>>
>>
>> --
>> "Do or do not. There is no try"
>>   Yoda Master

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