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kernel: Add bison and flex to build environment

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* Required since Linux 4.16

Change-Id: I107ea1b097d72a7b5251273c8c7e33ad6585b59c
Signed-off-by: Jesse Chan <jc@lineageos.org>
This commit is contained in:
dianlujitao 2020-03-11 19:05:29 +08:00 committed by Bruno Martins
parent d3a50ee866
commit a24144faf2
1 changed files with 5 additions and 0 deletions
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5
config/BoardConfigKernel.mk
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@ -149,6 +149,11 @@ endif
KERNEL_MAKE_FLAGS += HOSTCC=$(KERNEL_HOST_TOOLCHAIN_ROOT)gcc
KERNEL_MAKE_FLAGS += HOSTCXX=$(KERNEL_HOST_TOOLCHAIN_ROOT)g++
# Since Linux 4.16, flex and bison are required
KERNEL_MAKE_FLAGS += LEX=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/flex
KERNEL_MAKE_FLAGS += YACC=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/bison
TOOLS_PATH_OVERRIDE += BISON_PKGDATADIR=$(BUILD_TOP)/prebuilts/build-tools/common/bison
# Set the out dir for the kernel's O= arg
# This needs to be an absolute path, so only set this if the standard out dir isn't used
OUT_DIR_PREFIX := $(shell echo $(OUT_DIR) | sed -e 's|/target/.*$$||g')