Re: git: ab52d5af3b6f - main - dns/doh-proxy: fix build on powerpc

From: Piotr Kubaj <pkubaj_at_anongoth.pl>
Date: Wed, 14 Aug 2024 22:11:13 UTC 
On 24-08-14 23:14:15, Gerald Pfeifer wrote:
>On Sun, 4 Aug 2024, Piotr Kubaj wrote:
>> URL: https://cgit.FreeBSD.org/ports/commit/?id=ab52d5af3b6fa295d2b9fb45d89e1cd23b15330f
>:
>>     dns/doh-proxy: fix build on powerpc
>>
>>       = note: ld: error: undefined symbol: __atomic_load_8
>>               >>> referenced by static.c
>>               >>>               98cfcaec7182b1d8-static.o:(mi_arena_schedule_purge) in archive /wrkdirs/usr/ports/dns/doh-proxy/work/rustc4xSzx7/liblibmimalloc_sys-4a9c093f9f8149a2.rlib
>>               >>> referenced by static.c
>>               >>>               98cfcaec7182b1d8-static.o:(mi_arenas_try_purge) in archive /wrkdirs/usr/ports/dns/doh-proxy/work/rustc4xSzx7/liblibmimalloc_sys-4a9c093f9f8149a2.rlib
>>               >>> referenced by static.c
>>               >>>               98cfcaec7182b1d8-static.o:(mi_stat_update) in archive /wrkdirs/usr/ports/dns/doh-proxy/work/rustc4xSzx7/liblibmimalloc_sys-4a9c093f9f8149a2.rlib
>>               >>> referenced 2 more times
>
>> +.include <bsd.port.options.mk>
>> +
>> +.if ${ARCH} == powerpc
>> +LIB_DEPENDS+=	libatomic.so:lang/gcc${GCC_DEFAULT}
>> +LDFLAGS+=	-L/usr/local/lib/gcc${GCC_DEFAULT} -latomic
>> +.endif
>
>This looks ... interesting: pulling in GCC for a single library which is
>more an interal aspect on one platform only?
>
>Isn't rather something broken or missing on powerpc and this is more of a
>crude hack leading to a Frankenbuild?
>
>Gerald

It's not the first port that does it, lang/rust itself also needs it.
The reason is missing 64-bit atomic functions in LLVM for powerpc.