Hi Everyone,

I have a HiKey running Linaro. I'm trying to build out a test case which tests Aarch32 on Aarch64.

When I attempt to build an Aarch32 binary I experience the compile error below. The GCC folks helped me with the Aarch32 CFLAGS, so I believe they are correct.

$ gcc -march=armv8-a+crc -mtune=cortex-a53 -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard test.cc -o test.exe gcc: error: unrecognized command line option ‘-mfpu=crypto-neon-fp-armv8’ gcc: error: unrecognized command line option ‘-mfloat-abi=hard’

Trying an -m32:

$ gcc -march=armv8-a+crc -mtune=cortex-a53 -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard -m32 test.cc -o test.exe gcc: error: unrecognized command line option ‘-mfpu=crypto-neon-fp-armv8’ gcc: error: unrecognized command line option ‘-mfloat-abi=hard’ gcc: error: unrecognized command line option ‘-m32’

And without the -mtune:

$ gcc -march=armv8-a+crc -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard test.cc -o test.exe gcc: error: unrecognized command line option ‘-mfpu=crypto-neon-fp-armv8’ gcc: error: unrecognized command line option ‘-mfloat-abi=hard’

I'm obviously suffering a disconnect. I may have more problems after the build when attempting to run the program, but I'll cross that bridge when I encounter it.

How does one build an Aarch32 program on Aarch64?

Thanks in advance.