* [PATCH] powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec
@ 2022-10-27 12:56 Michael Ellerman
2022-11-01 12:25 ` Michael Ellerman
0 siblings, 1 reply; 2+ messages in thread
From: Michael Ellerman @ 2022-10-27 12:56 UTC (permalink / raw)
To: linuxppc-dev
There's a build failure for Book3E without AltiVec:
Error: cc1: error: AltiVec not supported in this target
make[6]: *** [/linux/scripts/Makefile.build:250:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o] Error 1
This happens because the amdgpu build is only gated by
PPC_LONG_DOUBLE_128, but that symbol can be enabled even though AltiVec
is disabled.
The only user of PPC_LONG_DOUBLE_128 is amdgpu, so just add a dependency
on AltiVec to that symbol to fix the build.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 699df27b0e2f..20fb1765238c 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -285,7 +285,7 @@ config PPC
#
config PPC_LONG_DOUBLE_128
- depends on PPC64
+ depends on PPC64 && ALTIVEC
def_bool $(success,test "$(shell,echo __LONG_DOUBLE_128__ | $(CC) -E -P -)" = 1)
config PPC_BARRIER_NOSPEC
--
2.37.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec
2022-10-27 12:56 [PATCH] powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec Michael Ellerman
@ 2022-11-01 12:25 ` Michael Ellerman
0 siblings, 0 replies; 2+ messages in thread
From: Michael Ellerman @ 2022-11-01 12:25 UTC (permalink / raw)
To: Michael Ellerman, linuxppc-dev
On Thu, 27 Oct 2022 23:56:26 +1100, Michael Ellerman wrote:
> There's a build failure for Book3E without AltiVec:
> Error: cc1: error: AltiVec not supported in this target
> make[6]: *** [/linux/scripts/Makefile.build:250:
> drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o] Error 1
>
> This happens because the amdgpu build is only gated by
> PPC_LONG_DOUBLE_128, but that symbol can be enabled even though AltiVec
> is disabled.
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec
https://git.kernel.org/powerpc/c/2153fc9623e5465f503d793d4c94ad65e9ec9b5f
cheers
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-10-27 12:56 [PATCH] powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec Michael Ellerman
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