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kernel: filter -no-plt from KCFLAGS 

Compiler option -no-plt will break kernel builds on some architectures
eg. (x86)  Filter this option from the recently introduced handling of
KCFLAGS vs EXTRA_OPTIMISATION

Fixes: 1d42af720c ("kernel: use KCFLAGS for passing EXTRA_OPTIMIZATION flags")

Suggested-by: Felix Fietkau <nbd@nbd.name>

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This commit is contained in:
Kevin Darbyshire-Bryant 2022-06-21 14:15:40 +01:00
parent 33e7f7c028
commit 24e27bec9a
2 changed files with 1 additions and 2 deletions
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2
include/kernel.mk
View File

@ -101,7 +101,7 @@ endif
KERNEL_MAKE = $(MAKE) $(KERNEL_MAKEOPTS)
KERNEL_MAKE_FLAGS = \
KCFLAGS="$(call iremap,$(BUILD_DIR),$(notdir $(BUILD_DIR))) $(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION)) $(call qstrip,$(CONFIG_KERNEL_CFLAGS))" \
KCFLAGS="$(call iremap,$(BUILD_DIR),$(notdir $(BUILD_DIR))) $(filter-out -fno-plt,$(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))) $(call qstrip,$(CONFIG_KERNEL_CFLAGS))" \
HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \
CROSS_COMPILE="$(KERNEL_CROSS)" \
ARCH="$(LINUX_KARCH)" \

1
rules.mk
View File

@ -62,7 +62,6 @@ ARCH_PACKAGES:=$(call qstrip,$(CONFIG_TARGET_ARCH_PACKAGES))
BOARD:=$(call qstrip,$(CONFIG_TARGET_BOARD))
SUBTARGET:=$(call qstrip,$(CONFIG_TARGET_SUBTARGET))
TARGET_OPTIMIZATION:=$(call qstrip,$(CONFIG_TARGET_OPTIMIZATION))
export EXTRA_OPTIMIZATION:=$(filter-out -fno-plt,$(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION)))
TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})