Compile mha from source on M1 Macbook - error clang: error: the clang compiler does not support '-mcpu=cortex-a8'

[steffendasenbrock]

Hi,

I tried to compile mha from source on macOS 11. I installed the required software and packages.
When I try make I get the following error:

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felinemalin@MacBook-Air-von-Malin openMHA % make                                    
/Applications/Xcode.app/Contents/Developer/usr/bin/make -C external_libs
cd libemx/. && /Applications/Xcode.app/Contents/Developer/usr/bin/make -j 1
clang -Wall -Wextra -std=gnu11 -fPIC -O3 -mcpu=cortex-a8 -mfloat-abi=hard -mfpu=neon -ffast-math -fomit-frame-pointer -fno-finite-math-only -isystem/opt/local/include -Wno-error=unused-command-line-argument -g -isystem /Users/felinemalin/Desktop/steffens_kram/openMHA/external_libs/arm64-Darwin-clang/include -Wall -Wextra -Werror -std=gnu11 -fPIC -O3 -mcpu=cortex-a8 -mfloat-abi=hard -mfpu=neon -ffast-math -fomit-frame-pointer -fno-finite-math-only -isystem/opt/local/include -Wno-error=unused-command-line-argument -g -isystem /Users/felinemalin/Desktop/steffens_kram/openMHA/external_libs/arm64-Darwin-clang/include -c -o arm64-Darwin-clang/emxAPI.o src/emxAPI.c
clang: error: the clang compiler does not support '-mcpu=cortex-a8'
make[2]: *** [arm64-Darwin-clang/emxAPI.o] Error 1
make[1]: *** [arm64-Darwin-clang/libemx.is_installed] Error 2
make: *** [external_libs] Error 2

Could the reason behind this be that this is an M1 MacBook Air, which does not use an Intel processor or could the reason be something different? Do I need to set the variable COMPILEPREFIX in this case?

Best regards,
Steffen

[tobiasherzke]

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clang: error: the clang compiler does not support '-mcpu=cortex-a8'

Could the reason behind this be that this is an M1 MacBook Air, which does not use an Intel processor

Yes, the configure script is confused. What is the output of

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uname -m

on this computer?

Do I need to set the variable COMPILEPREFIX in this case?

No. Just manually delete the line containing "-mcpu=cortex-a8" from file config.mk.

There may be other problems further into the compilation process. If so, please report them here.

[steffendasenbrock]

Hi,

thanks for your answer!

from

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uname -m 

I got: arm64

Manually deleting the line containing "-mcpu=cortex-a8" from the file config.mk seemed to have solved the issue!

Thanks a lot!

I only get some warnings

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Makefile:84: warning: overriding commands for target `arm64-Darwin-clang/unit-test-runner'
../../rules.mk:97: warning: ignoring old commands for target `arm64-Darwin-clang/unit-test-runner' 

Best regards,

Steffen