1 # SPDX-License-Identifier: GPL-2.0
4 hostprogs-always-$(CONFIG_DTC) += dtc fdtoverlay
5 hostprogs-always-$(CHECK_DT_BINDING) += dtc
7 dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
8 srcpos.o checks.o util.o
9 dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
11 # The upstream project builds libfdt as a separate library. We are choosing to
12 # instead directly link the libfdt object files into fdtoverlay.
13 libfdt-objs := fdt.o fdt_ro.o fdt_wip.o fdt_sw.o fdt_rw.o fdt_strerror.o fdt_empty_tree.o fdt_addresses.o fdt_overlay.o
14 libfdt = $(addprefix libfdt/,$(libfdt-objs))
15 fdtoverlay-objs := $(libfdt) fdtoverlay.o util.o
17 # Source files need to get at the userspace version of libfdt_env.h to compile
18 HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
20 ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
21 ifneq ($(CHECK_DT_BINDING)$(CHECK_DTBS),)
22 $(error dtc needs libyaml for DT schema validation support. \
23 Install the necessary libyaml development package.)
25 HOST_EXTRACFLAGS += -DNO_YAML
27 dtc-objs += yamltree.o
28 # To include <yaml.h> installed in a non-default path
29 HOSTCFLAGS_yamltree.o := $(shell pkg-config --cflags yaml-0.1)
30 # To link libyaml installed in a non-default path
31 HOSTLDLIBS_dtc := $(shell pkg-config yaml-0.1 --libs)
34 # Generated files need one more search path to include headers in source tree
35 HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src)
36 HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src)
38 # dependencies on generated files need to be listed explicitly
39 $(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h