Commit b816b3db authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

kbuild: fix CONFIG_CC_CAN_LINK(_STATIC) for cross-compilation with Clang 



scripts/cc-can-link.sh tests if the compiler can link userspace
programs.

When $(CC) is GCC, it is checked against the target architecture
because the toolchain prefix is specified as a part of $(CC).

When $(CC) is Clang, it is checked against the host architecture
because --target option is missing.

Pass $(CLANG_FLAGS) to scripts/cc-can-link.sh to evaluate the link
capability for the target architecture.

Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
Reviewed-by: default avatarNathan Chancellor <natechancellor@gmail.com>
parent 8f8499a9

init/Kconfig

+4 −4
Original line number Diff line number Diff line
@@ -49,13 +49,13 @@ config CLANG_VERSION 


config CC_CAN_LINK

	bool

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m64-flag)) if 64BIT

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m32-flag))

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m64-flag)) if 64BIT

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m32-flag))



config CC_CAN_LINK_STATIC

	bool

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) -static $(m64-flag)) if 64BIT

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) -static $(m32-flag))

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m64-flag) -static) if 64BIT

	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m32-flag) -static)



config CC_HAS_ASM_GOTO

	def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC))

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