1# SPDX-License-Identifier: GPL-2.0 2# scripts/dtc makefile 3 4hostprogs := dtc 5always-$(CONFIG_DTC) += $(hostprogs) 6always-$(CHECK_DT_BINDING) += $(hostprogs) 7 8dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \ 9 srcpos.o checks.o util.o 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 13HOST_EXTRACFLAGS := -I $(srctree)/$(src)/libfdt 14 15ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),) 16ifneq ($(CHECK_DT_BINDING)$(CHECK_DTBS),) 17$(error dtc needs libyaml for DT schema validation support. \ 18 Install the necessary libyaml development package.) 19endif 20HOST_EXTRACFLAGS += -DNO_YAML 21else 22dtc-objs += yamltree.o 23HOSTLDLIBS_dtc := $(shell pkg-config yaml-0.1 --libs) 24endif 25 26# Generated files need one more search path to include headers in source tree 27HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src) 28HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src) 29 30# dependencies on generated files need to be listed explicitly 31$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h 32