On Wed, Apr 22, 2015 at 12:36:58PM -0600, Jeff Law wrote: > On 04/22/2015 12:13 PM, David Malcolm wrote: > > > > >Conditional compilation was a major PITA when doing the rtx->rtx_insn * > >work last year, so I'm very pleased to see these cleanups go in. > Yup. It also got in Andrew's way last year and we regularly see cases where > small patches which work fine on the mainstream architectures fail to build > in the lesser used architectures (particularly cc0 targets). It's a whole > class of problems I want to see slowly disappear.
yeah, its irritated me on a number of occasions too. I'd really like it if building config-list.mk could be faster, but that's a much bigger project, but at least if everything is target hooks maybe ccache can kick in some. Trev > > glibc went through this process in their codebase for similar reasons, but > they had more to lose when they got it wrong -- IIRC they had a case where > exported ABI would differ as a result of conditionally compiled code. Not > good. > > Jeff
