Hello, On Wed, 29 May 2019 17:02:29 +0800 Guo Ren <guoren@xxxxxxxxxx> wrote: > DSP is no use in current buildroot and gcc default enable the DSP > feature for C-SKY. > So DSP is part of our standard ISA, we needn't put it in -mcpu=xxx. "DSP is no use in current Buildroot" is not correct. The option exists, and it changes the BR2_GCC_TARGET_CPU value. So it *is* used: it adds "e" to BR2_GCC_TARGET_CPU. So this explanation is not really good/sufficient. I am willing to help you formulate this properly, but since I still don't understand why you are dropping the DSP option, I can't really help by proposing a better wording. Best regards, Thomas -- Thomas Petazzoni, CTO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
