linux - scripts/dtc/Makefile

40 lines · 1.6 KiB

1	# SPDX-License-Identifier: GPL-2.0
2	# scripts/dtc makefile
3
4	# * Also keep .gitignore in sync when changing *
5	hostprogs-always-$(CONFIG_DTC) += dtc fdtoverlay
6	hostprogs-always-$(CHECK_DT_BINDING) += dtc
7
8	dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
9	srcpos.o checks.o util.o
10	dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
11
12	# The upstream project builds libfdt as a separate library. We are choosing to
13	# instead directly link the libfdt object files into fdtoverlay.
14	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
15	libfdt = $(addprefix libfdt/,$(libfdt-objs))
16	fdtoverlay-objs := $(libfdt) fdtoverlay.o util.o
17
18	# Source files need to get at the userspace version of libfdt_env.h to compile
19	HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
20
21	ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
22	ifneq ($(CHECK_DT_BINDING)$(CHECK_DTBS),)
23	$(error dtc needs libyaml for DT schema validation support. \
24	Install the necessary libyaml development package.)
25	endif
26	HOST_EXTRACFLAGS += -DNO_YAML
27	else
28	dtc-objs += yamltree.o
29	# To include <yaml.h> installed in a non-default path
30	HOSTCFLAGS_yamltree.o := $(shell pkg-config --cflags yaml-0.1)
31	# To link libyaml installed in a non-default path
32	HOSTLDLIBS_dtc := $(shell pkg-config yaml-0.1 --libs)
33	endif
34
35	# Generated files need one more search path to include headers in source tree
36	HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src)
37	HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src)
38
39	# dependencies on generated files need to be listed explicitly
40	$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h