blob: 3187cec6431349a41690e0aee6fa857b530d71d2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
#
# This is based on the original scripts/dtc/Makefile, but has been revised to
# work with an insane submodule situation.
hostprogs-y := dtc-aosp
always := $(hostprogs-y)
dtc-aosp-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
srcpos.o checks.o util.o
dtc-aosp-objs += dtc-lexer.lex.o dtc-parser.tab.o
# We're working with a submodule, so make these all relative to that.
dtc-aosp-objs := $(addprefix dtc/,$(dtc-aosp-objs))
HOSTCFLAGS_DTC := -I$(src)/dtc -I$(src)/dtc/libfdt -I$(obj)/dtc
HOSTCFLAGS_checks.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_data.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_dtc.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_flattree.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_fstree.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_livetree.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_srcpos.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_treesource.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_util.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_dtc-lexer.lex.o := $(HOSTCFLAGS_DTC)
HOSTCFLAGS_dtc-parser.tab.o := $(HOSTCFLAGS_DTC)
# Dependencies on generated files need to be listed explicitly.
$(obj)/dtc/dtc-lexer.lex.o: $(obj)/dtc/dtc-parser.h
# The kernel's ordinary makefile doesn't have or require flex or bison,
# and in fact, upstream chooses to just have _shipped versions of the files.
# This is gross, so we add the build rules ourselves. We also make the
# header output .h instead of .tab.h for bison, because aosp is broken.
LEX ?= flex
BISON ?= bison
quiet_cmd_lex = LEX $@
cmd_lex = $(LEX) -o$@ $<
quiet_cmd_bison = BISON $@
cmd_bison = $(BISON) -d --output=$(@D)/$(notdir $(<:.y=.tab.c)) --defines=$(@D)/$(notdir $(<:.y=.h)) -Wno-conflicts-sr $<
%.lex.c: %.l
$(call if_changed,lex)
%.tab.c %.h: %.y
$(call if_changed,bison)
# Generated files need to be cleaned explicitly.
clean-files := dtc/dtc-lexer.lex.c dtc/dtc-parser.tab.c dtc/dtc-parser.h
|
