GMP build issues on Solaris 10 UltraSPARC
tg at gmplib.org
Fri Nov 10 16:49:05 UTC 2017
Sad Clouds <cryintothebluesky at gmail.com> writes:
+ gcc_cflags_cpu="-mcpu=niagara -mcpu=v9"
+ gcc_32_cflags_asm="-Wa,-Av8plusc -Wa,-xarch=v8plusc"
+ gcc_64_cflags_asm="-Wa,-Av9c -Wa,-xarch=v9c";;
Using -xarch=v8plusc is wrong for UltraSPARC T1 and T2 processors, since they don't support VIS3 instructions set. This results in the following ld.so errors when using Sun assembler
hardware capability (CA_SUNW_HW_1) unsupported: 0x400
GNU assembler states that:
?-Av8plusc? and ?-Av9c? enable the UltraSPARC Niagara instructions, as well as the instructions enabled by ?-Av8plusb? and ?-Av9b?.
However this is wrong, since with Sun/Oracle compilers this option is used for SPARC64 VI processor.
Clearly, the GNU compiler/assembler and the Solaris compiler/assembler
do not agree about the meaning of what v8plusc means. I suppose it is a
mistake in the GNU camp.
What do you suggest that we do for GMP?
Perhaps just pass v8plusb for T1/T2? I mean, these CPUs are so
horrendously slow anyway that nobody in his right mind would perform any
computation on them anyway.
Please encrypt, key id 0xC8601622
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