Messages in this thread | | | Date | Wed, 16 Nov 2022 15:16:32 -0800 | Subject | Re: kbuild: check the minimum compiler version in Kconfig | From | Florian Fainelli <> |
| |
On 11/16/22 15:11, Nick Desaulniers wrote: > On Wed, Nov 16, 2022 at 3:10 PM Nick Desaulniers > <ndesaulniers@google.com> wrote: >> >> On Wed, Nov 16, 2022 at 2:56 PM Florian Fainelli <f.fainelli@gmail.com> wrote: >>> >>> On 11/16/22 14:48, Nick Desaulniers wrote: >>>> On Wed, Nov 16, 2022 at 1:48 PM Florian Fainelli <f.fainelli@gmail.com> wrote: >>>>> >>>>> Hi Masahiro, Nick, >>>>> >>>>> The compiler version check performed with >>>>> aec6c60a01d3a3170242d6a99372a388e1136dc6 ("kbuild: check the minimum >>>>> compiler version in Kconfig") can be defeated and prevent running the >>>>> *config targets if specifying LLVM=1 on the command line, in that way: >>>>> >>>>> BR_BINARIES_DIR=/local/users/fainelli/buildroot-llvm/output/arm64/images >>>>> LLVM=1 LLVM_IAS=1 PKG_CONFIG_PATH="" /usr/bin/make -j49 -C >>>>> /local/users/fainelli/buildroot-llvm/output/arm64/build/linux-custom >>>>> HOSTCC="/usr/bin/gcc" >>>>> HOSTCC="/local/users/fainelli/buildroot-llvm/output/arm64/host/bin/ccache >>>>> /usr/bin/gcc -O2 >>>>> -I/local/users/fainelli/buildroot-llvm/output/arm64/host/include >>>>> -DNDEBUG -L/local/users/fainelli/buildroot-llvm/output/arm64/host/lib >>>>> -Wl,-rpath,/local/users/fainelli/buildroot-llvm/output/arm64/host/lib" >>>>> ARCH=arm64 >>>>> INSTALL_MOD_PATH=/local/users/fainelli/buildroot-llvm/output/arm64/target >>>>> CROSS_COMPILE="/local/users/fainelli/buildroot-llvm/output/arm64/host/bin/aarch64-linux-" >>>>> WERROR=0 >>>>> DEPMOD=/local/users/fainelli/buildroot-llvm/output/arm64/host/sbin/depmod >>>>> INSTALL_MOD_STRIP=1 HOSTCC="/usr/bin/gcc" menuconfig >>>>> UPD scripts/kconfig/mconf-cfg >>>>> HOSTCC scripts/kconfig/mconf.o >>>>> HOSTCC scripts/kconfig/lxdialog/checklist.o >>>>> HOSTCC scripts/kconfig/lxdialog/inputbox.o >>>>> HOSTCC scripts/kconfig/lxdialog/menubox.o >>>>> HOSTCC scripts/kconfig/lxdialog/textbox.o >>>>> HOSTCC scripts/kconfig/lxdialog/util.o >>>>> HOSTCC scripts/kconfig/lxdialog/yesno.o >>>>> HOSTLD scripts/kconfig/mconf >>>>> *** >>>>> *** Compiler is too old. >>>>> *** Your Clang version: 10.0.0 >>>>> *** Minimum Clang version: 10.0.1 >>>>> *** >>>>> scripts/Kconfig.include:44: Sorry, this compiler is not supported. >>>>> >>>>> Here, the compiler check is actually checking the host compiler clang >>>>> version installed on my Ubuntu 20.04 system, as opposed to the cross >>>>> compiler clang version that is being used. >>>> >>>> LLVM=1 will use `clang` as found by your $PATH. Where did you express >>>> to make what the "cross compiler clang version" is? (And why do you >>>> set HOSTCC three times) >>> >>> We are setting CROSS_COMPILE to express the cross compiler clang prefix >>> to use. >> >> Can you try setting CLANG_PREFIX rather than CROSS_COMPILE (to the same value)? >> >> CLANG_PREFIX=/local/users/fainelli/buildroot-llvm/output/arm64/host/bin/aarch64-linux- > > sorry, I meant LLVM_PREFIX
Same results unfortunately. -- Florian
| |