fix risc-v build error casued by cast-align warnings

[rockyzhang]

RISC-V, like arm/arm64 is an architecture requires more strict alignment.

Disable the warning like arm/arm64 to make it buildable.

[belegdol]

I believe @cuavas preferred to actually fix the code causing the warnings rather than disabling them. As such, it could help if you provided a build log with -Wno-error=cast-align. This way we would know which code parts generate the warnings.

[cuavas]

Disabling the warnings doesn't fix the issues. We need to start addressing this rather than just suppressing the warnings.

[rockyzhang]

I'm collecting the log with -Wno-error=cast-align, but seems there are quite some fix needs to be done.

[MooglyGuy]

I'm collecting the log with -Wno-error=cast-align, but seems there are quite some fix needs to be done.

Feel free to post the results on a publicly-accessible spot, perhaps they're things that other people can help with.

[rockyzhang]

make.log.gz

here is the build log.