Re: [PATCH v8 3/5] Cleanup ISA string setting

From: Palmer Dabbelt
Date: Mon Oct 15 2018 - 18:34:23 EST


On Sun, 14 Oct 2018 16:46:40 PDT (-0700), alankao@xxxxxxxxxxxxx wrote:
Hi Guenter,

On Sat, Oct 13, 2018 at 05:02:05PM -0700, Guenter Roeck wrote:
Hi,

With this patch in -next applied, I get the following error
when building riscv:defconfig.

I guess what you meant was this commit:
commit 0a5bee05fc67ce2044b8d91a18abbf14042da531

The modification in Makefile was

-endif
-
-KBUILD_AFLAGS += -march=$(KBUILD_MARCH)$(KBUILD_ARCH_A)fd$(KBUILD_ARCH_C)
+# ISA string setting
+riscv-march-$(CONFIG_ARCH_RV32I) := rv32im
+riscv-march-$(CONFIG_ARCH_RV64I) := rv64im
+riscv-march-$(CONFIG_RISCV_ISA_A) := $(riscv-march-y)a
+riscv-march-y := fd
+riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c

and the ":= fd" line was wrong. It should have been

+riscv-march-y := $(riscv-march-y)fd



What am I missing ? Does RISC-V now require a new non-upstream compiler ?
Or a special version of make ? I am currently using GNU Make 4.1.

So I sent the v8 to fix this problem.
Sorry for the inconvinience.


Thanks,
Guenter

---

And Palmer, it seems that the patch that causes this build error has been
pulled into linux-next. Any idea how to fix that one?

If I run into the new version then I'll overwrite in in my for-next branch. I don't see one, though...