Fails to build the kernel prebuilts after GCC got deprecated

Products Support HiKey970
#1

Hi,
I am trying to build the kernel prebuilts using the link:

I am getting this error:
drivers/gpu/arm/bifrost-hikey960/Kconfig:147:warning: choice value used outside its choice group
drivers/gpu/arm/bifrost-hikey960/Kconfig:150:warning: choice value used outside its choice group
drivers/gpu/arm/bifrost-hikey960/Kconfig:152:warning: choice value used outside its choice group
drivers/gpu/arm/bifrost-hikey960/Kconfig:156:warning: choice value used outside its choice group
./scripts/gcc-version.sh: line 25: aarch64-linux-android-gcc: command not found
./scripts/gcc-version.sh: line 26: aarch64-linux-android-gcc: command not found
make: aarch64-linux-android-gcc: Command not found
make: aarch64-linux-android-gcc: Command not found
CHK include/config/kernel.release
make: aarch64-linux-android-gcc: Command not found
Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong not supported by compiler
Makefile:1087: recipe for target ‘prepare-compiler-check’ failed
make: *** [prepare-compiler-check] Error 1
make: *** Waiting for unfinished jobs…
make: *** wait: No child processes. Stop.
My questions are :

  1. i am trying to build for hikey970, then why do i see the warning related to 960 as given below : drivers/gpu/arm/bifrost-hikey960/Kconfig:147:warning: choice value used outside its choice group
  2. Since GCC is deprecated, how kernel images should be built using clang?
  3. why this error:
    Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong not supported by compiler
    I was able to build the aosp on hikey 970 successfully in the month of November-2019, without any of these errors. I believe these problems arise only after GCC got deprecated in this month.
    Any inputs in this regard will be very helpful.
    Thanks

Board based on the Kirin 970 - HI3670 Application Processor
More info: http://www.96boards.org/product/hikey970/ (Website coming soon…)
Buy now: https://www.seeedstudio.com/HiKey-970-Development-Board-p-3046.html

#2

GCC is not deprecated.
Google just doesn’t use it any more. That’s all.

Try this;
https://releases.linaro.org/components/toolchain/binaries/latest-7/aarch64-linux-gnu/

#3

Thank you,
Will try this

#4

Hi,
I tried with this: https://releases.linaro.org/components/toolchain/binaries/latest-7/aarch64-linux-gnu/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.xz

But getting the following error:
drivers/firmware/efi/libstub/Makefile:69: recipe for target ‘drivers/firmware/efi/libstub/arm64-stub.stub.o’ failed
make[4]: *** [drivers/firmware/efi/libstub/arm64-stub.stub.o] Error 1
drivers/firmware/efi/libstub/fdt.stub.o: absolute symbol references not allowed in the EFI stub
drivers/firmware/efi/libstub/Makefile:69: recipe for target ‘drivers/firmware/efi/libstub/fdt.stub.o’ failed
make[4]: *** [drivers/firmware/efi/libstub/fdt.stub.o] Error 1
scripts/Makefile.build:552: recipe for target ‘drivers/firmware/efi/libstub’ failed
make[3]: *** [drivers/firmware/efi/libstub] Error 2
scripts/Makefile.build:552: recipe for target ‘drivers/firmware/efi’ failed
make[2]: *** [drivers/firmware/efi] Error 2
scripts/Makefile.build:552: recipe for target ‘drivers/firmware’ failed
make[1]: *** [drivers/firmware] Error 2
make[1]: *** Waiting for unfinished jobs…
Makefile:1009: recipe for target ‘drivers’ failed
make: *** [drivers] Error 2
Kernel Image build fail!

Can you please help me…

#5

You’re going to have to provide more details.

Precise commands you used for setting up the environment and compiling.

#6

Hi,
These are the commands i am using …
source build/envsetup.sh
lunch hikey970-userdebug
export PATH=~/aosp/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu/bin/:$PATH
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
~/aosp/kernel$ ./build_kernel.sh
build_kernel_sh is taken from this link Build & Update Linux kernel on HiKey970 - 96Boards

#7

A bunch of that stuff you don’t need for building the kernel. envsetup.sh and lunch, for instance, are for building ANDROID, not kernel.

Try this;
Don’t set the PATH. Set ARCH and CROSS_COMPILE as follows (edit the {toolchain} patch to match your path).

export ARCH=arm64
export CROSS_COMPILE={toolchain}/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
make hikey970_defconfig
make -j24

Note that that script does a lot more than just build the kernel, so you should probably break it down until you understand it.

#8

Hi,
I am actually building for Android, reffering to this link: 96boards/documentation/consumer/hikey/hikey970/build/aosp.md.html (unable to post the complete link)

To successfully compile android i need these two binaries : Image.gz-hikey970-4.9 and kirin970-hikey970.dtb-4.9

I gave the path to toolchain in CROSS_COMPILE as you suggested.

I tried giving the individual make commands mentioned in the script.

make hikey970_defconfig--- goes through successfully.

make hisilicon/kirin970-hikey970.dtb---goes through successfully.

make -j$[NCPU*2] Image.gz modules----- command throws the error.
drivers/firmware/efi/libstub/arm-stub.stub.o: absolute symbol references not allowed in the EFI stub
drivers/firmware/efi/libstub/Makefile:69: recipe for target 'drivers/firmware/efi/libstub/arm-stub.stub.o' failed
make[4]: *** [drivers/firmware/efi/libstub/arm-stub.stub.o] Error 1
scripts/Makefile.build:552: recipe for target 'drivers/firmware/efi/libstub' failed
make[3]: *** [drivers/firmware/efi/libstub] Error 2
scripts/Makefile.build:552: recipe for target 'drivers/firmware/efi' failed
make[2]: *** [drivers/firmware/efi] Error 2
scripts/Makefile.build:552: recipe for target 'drivers/firmware' failed
make[1]: *** [drivers/firmware] Error 2
make[1]: *** Waiting for unfinished jobs....

without Image.gz binary i will not be able to compile AOSP successfully…
I get this error if i try to compile AOSP:
FAILED: ninja: 'device/linaro/hikey-kernel/Image.gz-hikey970-4.9', needed by 'out/target/product/hikey970/kernel', missing and no known rule to make it