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Be smarter about stack-protector on the host.

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Some projects are still built with our host GCC 4.8, which doesn't
support -fstack-protector-strong. The combo .mk files are used by
GCC and clang, so it's not safe to turn on -fstack-protector-strong
there. Instead, do it in the clang-specific .mk for now.

We can clean this up when elfutils (the last code built for the host
with GCC that I'm aware of) is built by clang. We'll be able to
remove the host GCC prebuilts too!

Change-Id: I314b9eab071c132a8e2cb8cc779a75ae8abb12e2
This commit is contained in:
Elliott Hughes 2015-12-14 13:20:59 -08:00
parent 7abad39b78
commit 505e4ec646
3 changed files with 6 additions and 2 deletions
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4
core/clang/HOST_x86_common.mk
View file

@ -6,6 +6,8 @@ CLANG_CONFIG_x86_DARWIN_HOST_EXTRA_ASFLAGS := \
CLANG_CONFIG_x86_DARWIN_HOST_EXTRA_CFLAGS := \
-integrated-as
CLANG_CONFIG_x86_DARWIN_HOST_EXTRA_CFLAGS += -fstack-protector-strong
endif
ifeq ($(HOST_OS),linux)
@ -16,6 +18,8 @@ CLANG_CONFIG_x86_LINUX_HOST_EXTRA_ASFLAGS := \
CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CFLAGS := \
--gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)
CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CFLAGS += -fstack-protector-strong
ifneq ($(strip $($(clang_2nd_arch_prefix)HOST_IS_64_BIT)),)
CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CPPFLAGS := \
--gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \

2
core/combo/HOST_linux-x86.mk
View file

@ -45,7 +45,7 @@ endif # BUILD_HOST_static
$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -fPIC \
-no-canonical-prefixes \
$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-strong
$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector
# Workaround differences in inttypes.h between host and target.
# See bug 12708004.

2
core/combo/HOST_linux-x86_64.mk
View file

@ -44,7 +44,7 @@ endif # BUILD_HOST_static
HOST_GLOBAL_CFLAGS += -fPIC \
-no-canonical-prefixes \
HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-strong
HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector
# Workaround differences in inttypes.h between host and target.
# See bug 12708004.