Hi all,
On Mon, 18 Oct 2021 14:14:59 -0700 Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>
> On 10/18/21 2:30 AM, Stephen Rothwell wrote:
> > Hi all,
> >
> > Changes since 20211015:
> >
>
> UML (arch=um) with SUBARCH of i386 or x86_64,
> using gcc, not clang:
>
> make[1]: Entering directory '/work/lnx/next/linux-next-20211018/UM64'
> ../scripts/Makefile.clang:19: *** Specify CROSS_COMPILE or add '--target=' option to scripts/Makefile.clang. Stop.
> make[1]: Leaving directory '/work/lnx/next/linux-next-20211018/UM64'
> make: *** [Makefile:226: __sub-make] Error 2
>
>
> Just use a make target of defconfig:
>
> make ARCH=um SUBARCH=x86_64 O=UM64 defconfig
OK, I missed that.
In commit
c862c7fee526 ("Kbuild: add Rust support")
from the rust tree, these bits should probably not be there:
Makefile:
@@ -586,13 +628,11 @@ endif
# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile.
# CC_VERSION_TEXT is referenced from Kconfig (so it needs export),
# and from include/config/auto.conf.cmd to detect the compiler upgrade.
CC_VERSION_TEXT = $(subst $(pound),,$(shell LC_ALL=C $(CC) --version 2>/dev/null | head -n 1))
-ifneq ($(findstring clang,$(CC_VERSION_TEXT)),)
include $(srctree)/scripts/Makefile.clang
-endif
# Include this also for config targets because some architectures need
# cc-cross-prefix to determine CROSS_COMPILE.
ifdef need-compiler
include $(srctree)/scripts/Makefile.compiler
in scripts/Makefile.clang the
ifneq ($(findstring clang,$(CC_VERSION_TEXT)),)
endif
pair near the end become unnecessary.
So I will apply the following to the merge of the rust tree today:
diff --git a/Makefile b/Makefile
index b4482fd3a0cc..3d7c777d831f 100644
--- a/Makefile
+++ b/Makefile
@@ -630,7 +630,9 @@ endif
# and from include/config/auto.conf.cmd to detect the compiler upgrade.
CC_VERSION_TEXT = $(subst $(pound),,$(shell LC_ALL=C $(CC) --version 2>/dev/null | head -n 1))
+ifneq ($(findstring clang,$(CC_VERSION_TEXT)),)
include $(srctree)/scripts/Makefile.clang
+endif
# Include this also for config targets because some architectures need
# cc-cross-prefix to determine CROSS_COMPILE.
diff --git a/scripts/Makefile.clang b/scripts/Makefile.clang
index 38f555d0cb0d..b8e331f98471 100644
--- a/scripts/Makefile.clang
+++ b/scripts/Makefile.clang
@@ -40,9 +40,7 @@ TENTATIVE_CLANG_FLAGS += -Werror=ignored-optimization-argument
export TENTATIVE_CLANG_FLAGS
-ifneq ($(findstring clang,$(CC_VERSION_TEXT)),)
CLANG_FLAGS += $(TENTATIVE_CLANG_FLAGS)
KBUILD_CFLAGS += $(CLANG_FLAGS)
KBUILD_AFLAGS += $(CLANG_FLAGS)
export CLANG_FLAGS
-endif
Miguel, does that seem reasonable?
--
Cheers,
Stephen Rothwell
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