From f5a4ce7926282d426104ddae522b4f8217496655 Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Wed, 25 Nov 2015 02:59:45 -0800 Subject: [PATCH 1/2] kbuild: derive relative path for KBUILD_SRC from CURDIR This enables relocating source and build trees to different roots, provided they stay reachable relative to one another. Useful for builds done within a sandbox where the eventual root is prefixed by some undesirable path component. --- Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 7f561ef954f29b..7aca399efae307 100644 --- a/Makefile +++ b/Makefile @@ -143,7 +143,8 @@ $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make # Invoke a second make in the output directory, passing relevant variables sub-make: - $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ + $(Q)$(MAKE) -C $(KBUILD_OUTPUT) \ + KBUILD_SRC=$(shell realpath --relative-to=$(KBUILD_OUTPUT) $(CURDIR)) \ -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) # Leave processing to above invocation of make From 1f42bc7caf97bcd2944dce9659c410a8d9961ba8 Mon Sep 17 00:00:00 2001 From: David Michael Date: Thu, 8 Feb 2018 21:23:12 -0500 Subject: [PATCH 2/2] tools/objtool/Makefile: Don't fail on fallthrough with new GCCs --- tools/lib/subcmd/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/lib/subcmd/Makefile b/tools/lib/subcmd/Makefile index ed61fb3a46c08e..146ec9ec6737a6 100644 --- a/tools/lib/subcmd/Makefile +++ b/tools/lib/subcmd/Makefile @@ -33,6 +33,9 @@ ifneq ($(WERROR),0) CFLAGS += -Werror endif +# Don't fail on fallthrough with newer GCCs. +CFLAGS += -Wno-error=implicit-fallthrough + CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE CFLAGS += -I$(srctree)/tools/include/