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: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
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8f8499a910
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b816b3db15
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@ -49,13 +49,13 @@ config CLANG_VERSION
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config CC_CAN_LINK
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bool
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m64-flag)) if 64BIT
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m32-flag))
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m64-flag)) if 64BIT
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m32-flag))
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config CC_CAN_LINK_STATIC
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bool
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) -static $(m64-flag)) if 64BIT
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) -static $(m32-flag))
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m64-flag) -static) if 64BIT
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default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m32-flag) -static)
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config CC_HAS_ASM_GOTO
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def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC))
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