[PATCH 1/3] kbuild: add -fno-PIE flag unconditionally

From: Masahiro Yamada
Date: Fri Dec 14 2018 - 03:06:26 EST


This flag is documented in the GCC 4.6 manual, and recognized by
Clang as well. Let's rip off the cc-option switch.

Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---

Makefile | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index f2c3423..3bbc16a 100644
--- a/Makefile
+++ b/Makefile
@@ -422,9 +422,9 @@ LINUXINCLUDE := \
-I$(objtree)/include \
$(USERINCLUDE)

-KBUILD_AFLAGS := -D__ASSEMBLY__
+KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common -fshort-wchar \
+ -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
-Werror-implicit-function-declaration \
-Wno-format-security \
-std=gnu89
@@ -510,9 +510,6 @@ RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc
export RETPOLINE_CFLAGS
export RETPOLINE_VDSO_CFLAGS

-KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
-KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
-
# check for 'asm goto'
ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
CC_HAVE_ASM_GOTO := 1
--
2.7.4