[llvmlinux] Compilation errors android msm-caf-nexus5 and oneplus one

Fürst Stefan dieb.stefan.96 at gmail.com
Mon Aug 24 13:14:24 UTC 2015

Hello Linux Team,

i am trying to cross compile a nexus5 kernel with clang but at the end i
get the following errors while compiling.
The steps i did were
git clone http://git.linuxfoundation.org/llvmlinux.git
cd llvmlinux
cd targets/vexpress
make kernel-shell-for-build
cd ../../
cd targets
cd nexus5

Than i applied all necessary patches.
The build command looks like this
make ARCH=arm
-l4 -j5
CC="/home/stefan/llvmlinux/toolchain/clang/head/install/bin/clang "

drivers/built-in.o: In function `__video_do_ioctl':
undefined reference to `__aeabi_memclr4'
make[1]: *** [.tmp_vmlinux1] Error 1
make: *** [sub-make] Error 2

Aeabi fails with my oneplus one and nexus5 kernel source. Here is the full
error log http://pastebin.com/y3pSBzrN.

I already tried different targets with no success. I already have this
but it seems like some of these functions are missing ? This does not
happen with gcc 4.9. So where are these aeabi defined? Newlib ?  Do we need
a patch for that ? How can i solve that?

Maybe you can help me to get the first android kernel compiled with clang,

Kind regards,
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