kumquat-buildroot/toolchain/toolchain-wrapper.mk
Matt Weber f10822d151 toolchain/toolchain-wrapper: add BR2_SSP_* support
Migrate the stack protection flag management into the wrapper.

Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-10-20 12:51:21 +02:00

73 lines
2.2 KiB
Makefile

################################################################################
#
# definition of the toolchain wrapper build commands
#
################################################################################
# We use --hash-style=both to increase the compatibility of the generated
# binary with older platforms, except for MIPS, where the only acceptable
# hash style is 'sysv'
ifeq ($(findstring mips,$(HOSTARCH)),mips)
TOOLCHAIN_WRAPPER_HASH_STYLE = sysv
else
TOOLCHAIN_WRAPPER_HASH_STYLE = both
endif
TOOLCHAIN_WRAPPER_ARGS = $($(PKG)_TOOLCHAIN_WRAPPER_ARGS)
TOOLCHAIN_WRAPPER_ARGS += -DBR_SYSROOT='"$(STAGING_SUBDIR)"'
# We create a list like '"-mfoo", "-mbar", "-mbarfoo"' so that each flag is a
# separate argument when used in execv() by the toolchain wrapper.
TOOLCHAIN_WRAPPER_OPTS = \
$(foreach f,$(call qstrip,$(BR2_TARGET_OPTIMIZATION)),"$(f)"$(comma))
TOOLCHAIN_WRAPPER_ARGS += -DBR_ADDITIONAL_CFLAGS='$(TOOLCHAIN_WRAPPER_OPTS)'
ifeq ($(BR2_CCACHE),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE
endif
ifeq ($(BR2_x86_x1000),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_OMIT_LOCK_PREFIX
endif
# Avoid FPU bug on XBurst CPUs
ifeq ($(BR2_mips_xburst),y)
# Before gcc 4.6, -mno-fused-madd was needed, after -ffp-contract is
# needed
ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_4_6),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_FP_CONTRACT_OFF
else
TOOLCHAIN_WRAPPER_ARGS += -DBR_NO_FUSED_MADD
endif
endif
ifeq ($(BR2_CCACHE_USE_BASEDIR),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE_BASEDIR='"$(BASE_DIR)"'
endif
ifeq ($(BR2_RELRO_PARTIAL),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR2_RELRO_PARTIAL
else ifeq ($(BR2_RELRO_FULL),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR2_RELRO_FULL
endif
ifeq ($(BR2_SSP_REGULAR),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_SSP_REGULAR
else ifeq ($(BR2_SSP_STRONG),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_SSP_STRONG
else ifeq ($(BR2_SSP_ALL),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_SSP_ALL
endif
define TOOLCHAIN_WRAPPER_BUILD
$(HOSTCC) $(HOST_CFLAGS) $(TOOLCHAIN_WRAPPER_ARGS) \
-s -Wl,--hash-style=$(TOOLCHAIN_WRAPPER_HASH_STYLE) \
toolchain/toolchain-wrapper.c \
-o $(@D)/toolchain-wrapper
endef
define TOOLCHAIN_WRAPPER_INSTALL
$(INSTALL) -D -m 0755 $(@D)/toolchain-wrapper \
$(HOST_DIR)/bin/toolchain-wrapper
endef