1# SPDX-License-Identifier: GPL-2.0 2# scripts/dtc makefile 3 4hostprogs-always-$(CONFIG_DTC) += dtc 5hostprogs-always-$(CHECK_DT_BINDING) += dtc 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 ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),) 15ifneq ($(CHECK_DT_BINDING)$(CHECK_DTBS),) 16$(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 22# To include <yaml.h> installed in a non-default path 23HOSTCFLAGS_yamltree.o := $(shell pkg-config --cflags yaml-0.1) 24# To link libyaml installed in a non-default path 25HOSTLDLIBS_dtc := $(shell pkg-config yaml-0.1 --libs) 26endif 27 28# Generated files need one more search path to include headers in source tree 29HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src) 30HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src) 31 32# dependencies on generated files need to be listed explicitly 33$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h 34