1# SPDX-License-Identifier: GPL-2.0 2# scripts/dtc makefile 3 4hostprogs-$(CONFIG_DTC) := dtc 5always := $(hostprogs-y) 6 7dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \ 8 srcpos.o checks.o util.o 9dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o 10 11# Source files need to get at the userspace version of libfdt_env.h to compile 12HOST_EXTRACFLAGS := -I $(srctree)/$(src)/libfdt 13 14ifeq ($(wildcard /usr/include/yaml.h),) 15ifneq ($(CHECK_DTBS),) 16$(error dtc needs libyaml for DT schema validation support. \ 17 Install the necessary libyaml development package.) 18endif 19HOST_EXTRACFLAGS += -DNO_YAML 20else 21dtc-objs += yamltree.o 22HOSTLDLIBS_dtc := -lyaml 23endif 24 25# Generated files need one more search path to include headers in source tree 26HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src) 27HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src) 28 29# dependencies on generated files need to be listed explicitly 30$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h 31