Hello Joel,
On 24/02/2020 02:55, Joel Sherrill wrote:
Hi
What's the state of the world on ARM hard float support? I was asked by
someone about these options:
-march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16
-march=armv7-a+simd
When I test build a simple main(), I end up with a library mismatch which
usually means we are missing a proper multilib variant. I tried this
with the
rtems6 gcc 10 snapshot.
I looked at our gcc t-rtems versus the main one for elf/eabi and those seem
to have a LOT more variants.
Any insight would be appreciated.
GCC 8, 9 and 10 are not supported by the ARM BSPs right now.
You can try this with GCC 10:
-mthumb -march=armv7-a+simd -mfloat-abi=hard
Why do they use -mfpu=vfpv3-d16? This seems to be quite a non-standard
ARMv7-A chip.
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