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mDup
Apprentice

Joined: 14 Apr 2006
Posts: 212

Posted: Tue Mar 13, 2018 8:56 am Post subject: aarch64 sys-devel/llvm-6.0.0 [gcc -mno-bmi]

aarch64 emerge fails because of :

Code:

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?

NeddySeagoon
Administrator

Joined: 05 Jul 2003
Posts: 54234
Location: 56N 3W

Posted: Tue Mar 13, 2018 12:11 pm Post subject:

mDup,

Is it a USE flag issue?

Code:

# 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.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

mDup
Apprentice

Joined: 14 Apr 2006
Posts: 212

Posted: Tue Mar 13, 2018 5:10 pm Post subject:

NeddySeagoon wrote:

mDup,

Is it a USE flag issue?

Code:

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:

(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:

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

NeddySeagoon
Administrator

Joined: 05 Jul 2003
Posts: 54234
Location: 56N 3W

Posted: Tue Mar 13, 2018 5:39 pm Post subject:

mDup,

I can reproduce that.

Code:

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:

/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.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

mDup
Apprentice

Joined: 14 Apr 2006
Posts: 212

Posted: Wed Mar 14, 2018 12:04 am Post subject:

NeddySeagoon wrote:

mDup,

I can reproduce that.

Code:

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:

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.

NeddySeagoon
Administrator

Joined: 05 Jul 2003
Posts: 54234
Location: 56N 3W

Posted: Wed Mar 14, 2018 7:01 pm Post subject:

mDup, It now Bug sys-devel/llvm-6.0.0 no longer builds on ~arm64 _________________ Regards, NeddySeagoon Computer users fall into two groups:- those that do backups those that have never had a hard drive fail.

mDup
Apprentice

Joined: 14 Apr 2006
Posts: 212

Posted: Fri Mar 30, 2018 6:05 pm Post subject:

NeddySeagoon wrote:

mDup,

It now Bug sys-devel/llvm-6.0.0 no longer builds on ~arm64

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

Khumarahn
Apprentice

Joined: 17 Apr 2009
Posts: 199

Posted: Fri Mar 30, 2018 6:20 pm Post subject:

It builds for me.

mDup
Apprentice

Joined: 14 Apr 2006
Posts: 212

Posted: Fri Mar 30, 2018 6:44 pm Post subject:

Khumarahn wrote:

It builds for me.

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

Khumarahn
Apprentice

Joined: 17 Apr 2009
Posts: 199

Posted: Fri Mar 30, 2018 7:24 pm Post subject:

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

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