Messages in this thread Patch in this message | | | From | Masahiro Yamada <> | Subject | [PATCH v2 1/2] kbuild: fix CONFIG_CC_CAN_LINK(_STATIC) for cross-compilation with Clang | Date | Wed, 1 Jul 2020 00:06:24 +0900 |
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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> ---
Changes in v2: - New patch
init/Kconfig | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/init/Kconfig b/init/Kconfig index a46aa8f3174d..d0313e7725fa 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -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) -static $(m64-flag)) if 64BIT + default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) -static $(m32-flag)) config CC_HAS_ASM_GOTO def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC)) -- 2.25.1
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