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Re: PR target/47779 - detecting when compiling libgcc
"Henderson, Stuart" <Stuart.Henderson@analog.com> writes:
>>Ian:
>> Hmmm, yeah, that is somewhat painful.
>>If you want to fix this in uClibc, that's fine with me.
>>I've CC'ed Richard Sandiford to confirm. However, it's not hard to
>>imagine that, now that it works, somebody will expect to be able to use
>>constants defined in insn-constants.h in ways that matter for libgcc2.c.
>>So perhaps we should leave that as it is unless Richard thinks
>>otherwise.
>
>>Richard:
>>Actually, it was more than that. The idea was to allow target headers
>>such as mips.h to use constants defined in .md files. This avoided
>>some cases where the same constant or enum had to appear in both.
>
>
> So if I'm to go ahead and fix this in uClibc, would a reasonable fix be to...
> GCC: add -D__IN_LIBGCC2 to TARGET_LIBGCC2_CFLAGS in gcc/config/bfin/t-bfin-*
> uClibc: include the enum in uClibc #ifndef __IN_LIBGCC2
> ?
I would not accept that if I were a uClibc maintainer, but, sure, that
seems fine from a gcc point of view.
Ian