aarch64 sys-devel/llvm-6.0.0 [gcc -mno-bmi]

Message

mDup · Post by **mDup** » Tue Mar 13, 2018 8:56 am

aarch64 emerge fails because of :

 
    Change Dir: /var/tmp/portage/sys-devel/llvm-6.0.0/work/llvm-6.0.0.src-.arm64/CMakeFiles/CMakeTmp
    
    Run Build Command:"/usr/bin/ninja" "cmTC_01fc8"
    [1/2] Building C object CMakeFiles/cmTC_01fc8.dir/testCCompiler.c.o
    FAILED: CMakeFiles/cmTC_01fc8.dir/testCCompiler.c.o 
    /usr/bin/aarch64-unknown-linux-gnu-gcc    -DNDEBUG -march=native -O2 -pipe -fomit-frame-pointer -mno-bmi -o CMakeFiles/cmTC_01fc8.dir/testCCompiler.c.o -c testCCompiler.c
    aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option ‘-mno-bmi’; did you mean ‘-Wno-abi’?
    ninja: build stopped: subcommand failed.

anyone knows how to work around this?

Post by **NeddySeagoon** » Tue Mar 13, 2018 12:11 pm

mDup,

Is it a USE flag issue?

Code: Select all

 # emerge -pv sys-devel/llvm

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   *] sys-devel/llvm-6.0.0:6::gentoo  USE="libffi ncurses xml -debug (-doc) -gold -libedit {-test} -xar" LLVM_TARGETS="(AArch64) BPF -AMDGPU -ARM -Hexagon -Lanai -MSP430 -Mips -NVPTX -PowerPC -Sparc -SystemZ -X86 -XCore" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB

That's with the /17.0/ desktop profile, gcc-7.3.0, the gold linker and binutils 2.30.

If you post how you are building your llvm, I'll try to make mine fail.

mDup · Post by **mDup** » Tue Mar 13, 2018 5:10 pm

NeddySeagoon wrote:mDup,

Is it a USE flag issue?
Code: Select all
 # emerge -pv sys-devel/llvm

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   *] sys-devel/llvm-6.0.0:6::gentoo  USE="libffi ncurses xml -debug (-doc) -gold -libedit {-test} -xar" LLVM_TARGETS="(AArch64) BPF -AMDGPU -ARM -Hexagon -Lanai -MSP430 -Mips -NVPTX -PowerPC -Sparc -SystemZ -X86 -XCore" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB
That's with the /17.0/ desktop profile, gcc-7.3.0, the gold linker and binutils 2.30.

If you post how you are building your llvm, I'll try to make mine fail.

Thanks for attention. My setup looks similar to yours. Only use flag I do not have is xml. It does not help however.
Perhaps you have ARCH in env (I don't)?
I looked in the code and bmi looks Intel specific (I am not sure).

Code: Select all

(desktop) kvim2-gentoo ~ # emerge -pv sys-devel/llvm
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild  NS    ] sys-devel/llvm-6.0.0:6::gentoo [5.0.1:5::gentoo] USE="libffi ncurses -debug (-doc) -gold -libedit {-test} -xar -xml" LLVM_TARGETS="(AArch64) BPF -AMDGPU -ARM -Hexagon -Lanai -MSP430 -Mips -NVPTX -PowerPC -Sparc -SystemZ -X86 -XCore" 101 KiB

Total: 1 package (1 in new slot), Size of downloads: 101 KiB

(desktop) kvim2-gentoo ~ # eselect profile list | grep '*'
  [6]   default/linux/arm64/17.0 (dev) *

(desktop) kvim2-gentoo ~ # eselect gcc list | grep '*'
 [2] aarch64-unknown-linux-gnu-7.3.0 *

(desktop) kvim2-gentoo ~ # eselect binutils list | grep '*'
 [2] aarch64-unknown-linux-gnu-2.30 *

Can you try:

Code: Select all

# echo > test.c
# gcc -mno-bmi -c  test.c
gcc: error: unrecognized command line option ‘-mno-bmi’; did you mean ‘-Wno-abi’?

Post by **NeddySeagoon** » Tue Mar 13, 2018 5:39 pm

mDup,

I can reproduce that.

Code: Select all

neddy_test1 arm64-build ~ # echo > test.c           
neddy_test1 arm64-build ~ # gcc -mno-bmi -c  test.c
gcc: error: unrecognized command line option '-mno-bmi'; did you mean '-Wno-abi'?

I don't see ARCH set in the environment

Something has changed on my system though ...

Code: Select all

    /usr/bin/aarch64-unknown-linux-gnu-gcc    -DNDEBUG -mcpu=cortex-a53+crc -mtune=cortex-a53 -ftree-vectorize -O2 -pipe -fomit-frame-pointer -mno-bmi -o CMakeFiles/cmTC_1d41c.dir/testCCompiler.c.o -c testCCompiler.c
    aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mno-bmi'; did you mean '-Wno-abi'?
    ninja: build stopped: subcommand failed.

so I can't rebuild llvm-6.0.0.

mDup · Post by **mDup** » Wed Mar 14, 2018 12:04 am

NeddySeagoon wrote:mDup,

I can reproduce that.

Code: Select all

neddy_test1 arm64-build ~ # echo > test.c           
neddy_test1 arm64-build ~ # gcc -mno-bmi -c  test.c
gcc: error: unrecognized command line option '-mno-bmi'; did you mean '-Wno-abi'?

I don't see ARCH set in the environment

Something has changed on my system though ...

Code: Select all

    /usr/bin/aarch64-unknown-linux-gnu-gcc    -DNDEBUG -mcpu=cortex-a53+crc -mtune=cortex-a53 -ftree-vectorize -O2 -pipe -fomit-frame-pointer -mno-bmi -o CMakeFiles/cmTC_1d41c.dir/testCCompiler.c.o -c testCCompiler.c
    aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mno-bmi'; did you mean '-Wno-abi'?
    ninja: build stopped: subcommand failed.

so I can't rebuild llvm-6.0.0.

Thanks a lot for checking. So something recent in gentoo must have introduced the faulty gcc command line option.
I'll try to figure out.

Post by **NeddySeagoon** » Wed Mar 14, 2018 7:01 pm

mDup,

It now Bug [bug=650506]sys-devel/llvm-6.0.0 no longer builds on ~arm64[/bug]

mDup · Post by **mDup** » Fri Mar 30, 2018 6:05 pm

NeddySeagoon wrote:mDup,

It now Bug [bug=650506]sys-devel/llvm-6.0.0 no longer builds on ~arm64[/bug]

It looks like bug is fixed. I am trying build now.

Khumarahn · Post by **Khumarahn** » Fri Mar 30, 2018 6:20 pm

It builds for me.

mDup · Post by **mDup** » Fri Mar 30, 2018 6:44 pm

Khumarahn wrote:It builds for me.

same here.
by the way, which arm64 laptop do you have?

Khumarahn · Post by **Khumarahn** » Fri Mar 30, 2018 7:24 pm

mDup wrote:which arm64 laptop do you have?

It is Teres 1 by Olimex https://www.olimex.com/Products/DIY-Laptop/KITS
I have a repo with tweaks for it and a bootable gentoo image: https://github.com/khumarahn/teres1-gentoo