diff options
authorNathan Chancellor <>2021-03-09 13:59:14 -0700
committerMasahiro Yamada <>2021-04-25 05:12:55 +0900
commitc91d4e47e10ee4d3163838b1b727fe1d0664115b (patch)
parenta34e6d1e4a49035203819425694349caa004992a (diff)
Makefile: Remove '--gcc-toolchain' flag
This flag was originally added to allow clang to find the GNU cross tools in commit 785f11aa595b ("kbuild: Add better clang cross build support"). This flag was not enough to find the tools at times so '--prefix' was added to the list in commit ef8c4ed9db80 ("kbuild: allow to use GCC toolchain not in Clang search path") and improved upon in commit ca9b31f6bb9c ("Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation"). Now that '--prefix' specifies a full path and prefix, '--gcc-toolchain' serves no purpose because the kernel builds with '-nostdinc' and '-nostdlib'. This has been verified with self compiled LLVM 10.0.1 and LLVM 13.0.0 as well as a distribution version of LLVM 11.1.0 without binutils in the LLVM toolchain locations. Link: Signed-off-by: Nathan Chancellor <> Reviewed-by: Fangrui Song <> Reviewed-by: Nick Desaulniers <> Tested-by: Nick Desaulniers <> Tested-by: Sedat Dilek <> Signed-off-by: Masahiro Yamada <>
1 files changed, 0 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index 03e3ee982f14..40bfd059b5ef 100644
--- a/Makefile
+++ b/Makefile
@@ -581,10 +581,6 @@ ifneq ($(CROSS_COMPILE),)
CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
-ifneq ($(GCC_TOOLCHAIN),)
-CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN)
ifneq ($(LLVM_IAS),1)
CLANG_FLAGS += -no-integrated-as