FORM architecture support

[jodavies]

Out of curiosity, I ran a few tests compiling FORM and running its test suite on systems at https://portal.cfarm.net/, which are not part of our usual testing. Mostly just for information, but perhaps the failing riscv64 case is worth further investigation.

In all cases I used the default configure, without FLINT support.

Working:

Here all tests pass. Occasionally tests are skipped due to memory contraints (test_moebius_3).

Arch	CPU	OS	Compiler
riscv64	Spacemit X60	Debian Trixie	GCC 14.2.0
ppc64le	POWER10	AlmaLinux 9.7	GCC 11.5.0
ppc64le	POWER9	AlmaLinux 8.10	GCC 8.5.0
loongarch64	Loongson-3C5000L-LL	Debian Trixie	GCC 14.2.0

Failing:

This fails with segfaults in

Issue42_1
Issue59_1
Issue59_2

Arch	CPU	OS	Compiler	Notes
riscv64	SiFive U74-MC	Alpine 3.22	GCC 14.2.0	Uses Musl libc, perhaps this is the reason?

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The following are all big-endian systems. They fail the following tests:

PolyandFact_16
divmod_4
MergeWithFloat
Issue197
Issue508
Issue512_3
Issue512_4
polynomial_factarg_nvar_2
polynomial_factarg_nvar_5
polynomial_factdol_nvar_2
polynomial_factdol_nvar_5
tueda_prf_1

Arch	CPU	OS	Compiler	Notes
sun4v	SPARC-M8	Solaris 11.4	GCC 15.2.0	Needed to add bzero macro to UNIX block of form3.h
sparc64	UltraSparc T5	Debian Forky	GCC 15.2.0
ppc64	POWER10	Debian Forky	GCC 15.2.0