From b018806f8ab17dcd789ecfb6656569a0b0097990 Mon Sep 17 00:00:00 2001 From: Nick Desaulniers Date: Sat, 7 Oct 2017 13:23:23 -0700 Subject: kbuild: clang: remove crufty HOSTCFLAGS commit df16aaac26e92e97ab7234d3f93c953466adc4b5 upstream. When compiling with `make CC=clang HOSTCC=clang`, I was seeing warnings that clang did not recognize -fno-delete-null-pointer-checks for HOSTCC targets. These were added in commit 61163efae020 ("kbuild: LLVMLinux: Add Kbuild support for building kernel with Clang"). Clang does not support -fno-delete-null-pointer-checks, so adding it to HOSTCFLAGS if HOSTCC is clang does not make sense. It's not clear why the other warnings were disabled, and just for HOSTCFLAGS, but I can remove them, add -Werror to HOSTCFLAGS and compile with clang just fine. Suggested-by: Masahiro Yamada Signed-off-by: Nick Desaulniers Signed-off-by: Masahiro Yamada [nc: Backport to 4.9; adjust context] Signed-off-by: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman --- Makefile | 5 ----- 1 file changed, 5 deletions(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 5f4557846b71..cf5f1a5cf42d 100644 --- a/Makefile +++ b/Makefile @@ -306,11 +306,6 @@ HOSTCXX = g++ HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 HOSTCXXFLAGS = -O2 -ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) -HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ - -Wno-missing-field-initializers -fno-delete-null-pointer-checks -endif - # Decide whether to build built-in, modular, or both. # Normally, just do built-in. -- cgit v1.2.3