Commit 8ae94224 authored Nov 04, 2016 by Sebastian Andrzej Siewior Committed by Michal Marek Nov 08, 2016

kbuild: add -fno-PIE



Debian started to build the gcc with -fPIE by default so the kernel
build ends before it starts properly with:
|kernel/bounds.c:1:0: error: code model kernel does not support PIC mode

Also add to KBUILD_AFLAGS due to:

|gcc -Wp,-MD,arch/x86/entry/vdso/vdso32/.note.o.d … -mfentry -DCC_USING_FENTRY … vdso/vdso32/note.S
|arch/x86/entry/vdso/vdso32/note.S:1:0: sorry, unimplemented: -mfentry isn’t supported for 32-bit in combination with -fpic

Tagging it stable so it is possible to compile recent stable kernels as
well.

Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Michal Marek <mmarek@suse.com>

parent 4efca4ed

Makefile

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -622,6 +622,8 @@ include arch/$(SRCARCH)/Makefile
	KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)		KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
	KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,)		KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,)
	KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)		KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)
			KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
			KBUILD_AFLAGS += $(call cc-option,-fno-PIE)

	ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION		ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
	KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,)		KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,)