lkml.org 
[lkml]   [2020]   [Jun]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 1/2] kbuild: fix CONFIG_CC_CAN_LINK(_STATIC) for cross-compilation with Clang
Date
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
\
 
 \ /
  Last update: 2020-06-30 17:08    [W:0.043 / U:0.520 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site