[gccsdk] VFP vs FPA in library builds

Hi, all,

I've recently become interested in RISC OS because of its support for more
minimal hardware specs while supporting a number of features critical for
modern computing (e.g. SSL/TLS).

I'm trying to get Nettle building from source, and it appears to require a
gccsdk setup, which I've done, and also a number of libraries from gccsdk
which I could get through the build-libs script. One tricky thing,
though, is that it appears that some of the libraries, like openssl 1.1.1,
build with VFP enabled, while others, like zlib, build with FPA instead.
This brings up a linkage problem when it comes time to link Nettle.

I temporarily resolved this through going into the build scripts and
forcing VFP everywhere through CFLAGS manipulation, but it's not entirely
an ideal process, and really I'd prefer the more widely accepted FPA just
because VFP shouldn't be all that important for doing SSH.

Is there a way to control the floating point support that I'm building for
that I missed? Any particular reason why the openssl is building in VFP
but other libraries aren't?

Best,
Rhett

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