Commit e5337178 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Merge tag 'kbuild-fixes-v4.19-2' of... 

Merge tag 'kbuild-fixes-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Masahiro writes:
  "Kbuild fixes for v4.19 (2nd)
   - Fix warnings from recordmcount.pl when building with Clang
   - Allow Clang to use GNU toolchains correctly
   - Disable CONFIG_SAMPLES for UML to avoid build error"

* tag 'kbuild-fixes-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  samples: disable CONFIG_SAMPLES for UML
  kbuild: allow to use GCC toolchain not in Clang search path
  ftrace: Build with CPPFLAGS to get -Qunused-arguments
parents 834d3cd2 5318321d

Makefile

+5 −3
Original line number Diff line number Diff line
@@ -483,13 +483,15 @@ endif 
ifeq ($(cc-name),clang)

ifneq ($(CROSS_COMPILE),)

CLANG_TARGET	:= --target=$(notdir $(CROSS_COMPILE:%-=%))

GCC_TOOLCHAIN	:= $(realpath $(dir $(shell which $(LD)))/..)

GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD)))

CLANG_PREFIX	:= --prefix=$(GCC_TOOLCHAIN_DIR)

GCC_TOOLCHAIN	:= $(realpath $(GCC_TOOLCHAIN_DIR)/..)

endif

ifneq ($(GCC_TOOLCHAIN),)

CLANG_GCC_TC	:= --gcc-toolchain=$(GCC_TOOLCHAIN)

endif

KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)

KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)

KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)

KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)

KBUILD_CFLAGS += $(call cc-option, -no-integrated-as)

KBUILD_AFLAGS += $(call cc-option, -no-integrated-as)

endif

samples/Kconfig

+1 −0
Original line number Diff line number Diff line 
menuconfig SAMPLES

	bool "Sample kernel code"

	depends on !UML

	help

	  You can build and test sample kernel code here.

scripts/Makefile.build

+1 −1
Original line number Diff line number Diff line
@@ -219,7 +219,7 @@ else 
sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \

	"$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \

	"$(if $(CONFIG_64BIT),64,32)" \

	"$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \

	"$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS)" \

	"$(LD) $(KBUILD_LDFLAGS)" "$(NM)" "$(RM)" "$(MV)" \

	"$(if $(part-of-module),1,0)" "$(@)";

recordmcount_source := $(srctree)/scripts/recordmcount.pl

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