kbuild: allow to run dt_binding_check without kernel configuration
[linux-block.git] / scripts / dtc / Makefile
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b2441318 1# SPDX-License-Identifier: GPL-2.0
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2# scripts/dtc makefile
3
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4hostprogs := dtc
5always-$(CONFIG_DTC) += $(hostprogs)
6always-$(CHECK_DT_BINDING) += $(hostprogs)
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7
8dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
658f29a5 9 srcpos.o checks.o util.o
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10dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
11
12# Source files need to get at the userspace version of libfdt_env.h to compile
9cc342f6 13HOST_EXTRACFLAGS := -I $(srctree)/$(src)/libfdt
9fffb55f 14
067c650c 15ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
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16ifneq ($(CHECK_DTBS),)
17$(error dtc needs libyaml for DT schema validation support. \
18 Install the necessary libyaml development package.)
19endif
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20HOST_EXTRACFLAGS += -DNO_YAML
21else
22dtc-objs += yamltree.o
067c650c 23HOSTLDLIBS_dtc := $(shell pkg-config yaml-0.1 --libs)
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24endif
25
e3fd9b53 26# Generated files need one more search path to include headers in source tree
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27HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src)
28HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src)
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29
30# dependencies on generated files need to be listed explicitly
95abef88 31$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h