1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 include ../scripts/Makefile.include 2 include ../scripts/Makefile.include
3 include ../scripts/Makefile.arch 3 include ../scripts/Makefile.arch
4 4
>> 5 # always use the host compiler
>> 6 ifneq ($(LLVM),)
>> 7 HOSTAR ?= llvm-ar
>> 8 HOSTCC ?= clang
>> 9 HOSTLD ?= ld.lld
>> 10 else
>> 11 HOSTAR ?= ar
>> 12 HOSTCC ?= gcc
>> 13 HOSTLD ?= ld
>> 14 endif
>> 15 AR = $(HOSTAR)
>> 16 CC = $(HOSTCC)
>> 17 LD = $(HOSTLD)
>> 18
5 ifeq ($(srctree),) 19 ifeq ($(srctree),)
6 srctree := $(patsubst %/,%,$(dir $(CURDIR))) 20 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
7 srctree := $(patsubst %/,%,$(dir $(srctree))) 21 srctree := $(patsubst %/,%,$(dir $(srctree)))
8 endif 22 endif
9 23
10 LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/ !! 24 SUBCMD_SRCDIR = $(srctree)/tools/lib/subcmd/
11 ifneq ($(OUTPUT),) !! 25 LIBSUBCMD_OUTPUT = $(if $(OUTPUT),$(OUTPUT),$(CURDIR)/)
12 LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libs !! 26 LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a
13 else <<
14 LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd <<
15 endif <<
16 LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a <<
17 27
18 OBJTOOL := $(OUTPUT)objtool 28 OBJTOOL := $(OUTPUT)objtool
19 OBJTOOL_IN := $(OBJTOOL)-in.o 29 OBJTOOL_IN := $(OBJTOOL)-in.o
20 30
21 LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libe !! 31 LIBELF_FLAGS := $(shell pkg-config libelf --cflags 2>/dev/null)
22 LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libe !! 32 LIBELF_LIBS := $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
23 33
24 all: $(OBJTOOL) 34 all: $(OBJTOOL)
25 35
26 INCLUDES := -I$(srctree)/tools/include \ 36 INCLUDES := -I$(srctree)/tools/include \
27 -I$(srctree)/tools/arch/$(HOSTARCH 37 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \
28 -I$(srctree)/tools/arch/$(SRCARCH) !! 38 -I$(srctree)/tools/arch/$(SRCARCH)/include
29 -I$(srctree)/tools/objtool/include !! 39 WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed
30 -I$(srctree)/tools/objtool/arch/$( !! 40 CFLAGS := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS)
31 -I$(LIBSUBCMD_OUTPUT)/include !! 41 LDFLAGS += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)
32 # Note, EXTRA_WARNINGS here was determined for <<
33 # is passed here to match a legacy behavior. <<
34 WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-defa <<
35 OBJTOOL_CFLAGS := -Werror $(WARNINGS) $(KBUILD <<
36 OBJTOOL_LDFLAGS := $(LIBELF_LIBS) $(LIBSUBCMD) <<
37 42
38 # Allow old libelf to be used: 43 # Allow old libelf to be used:
39 elfshdr := $(shell echo '$(pound)include <libe !! 44 elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
40 OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_US !! 45 CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
41 <<
42 # Always want host compilation. <<
43 HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD) <<
44 46
45 AWK = awk 47 AWK = awk
46 MKDIR = mkdir <<
47 <<
48 ifeq ($(V),1) <<
49 Q = <<
50 else <<
51 Q = @ <<
52 endif <<
53 <<
54 BUILD_ORC := n <<
55 <<
56 ifeq ($(SRCARCH),x86) <<
57 BUILD_ORC := y <<
58 endif <<
59 <<
60 ifeq ($(SRCARCH),loongarch) <<
61 BUILD_ORC := y <<
62 endif <<
63 <<
64 export BUILD_ORC <<
65 export srctree OUTPUT CFLAGS SRCARCH AWK 48 export srctree OUTPUT CFLAGS SRCARCH AWK
66 include $(srctree)/tools/build/Makefile.includ 49 include $(srctree)/tools/build/Makefile.include
67 50
68 $(OBJTOOL_IN): fixdep $(LIBSUBCMD) FORCE !! 51 $(OBJTOOL_IN): fixdep FORCE
69 $(Q)$(CONFIG_SHELL) ./sync-check.sh !! 52 @$(MAKE) $(build)=objtool
70 $(Q)$(MAKE) $(build)=objtool $(HOST_OV <<
71 LDFLAGS="$(OBJTOOL_LDFLAGS)" <<
72 <<
73 53
74 $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 54 $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
75 $(QUIET_LINK)$(HOSTCC) $(OBJTOOL_IN) $ !! 55 @$(CONFIG_SHELL) ./sync-check.sh
76 !! 56 $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
77 <<
78 $(LIBSUBCMD_OUTPUT): <<
79 $(Q)$(MKDIR) -p $@ <<
80 57
81 $(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE <<
82 $(Q)$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LI <<
83 DESTDIR=$(LIBSUBCMD_OUTPUT) pr <<
84 $(HOST_OVERRIDES) EXTRA_CFLAGS <<
85 $@ install_headers <<
86 58
87 $(LIBSUBCMD)-clean: !! 59 $(LIBSUBCMD): fixdep FORCE
88 $(call QUIET_CLEAN, libsubcmd) !! 60 $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT)
89 $(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT) <<
90 61
91 clean: $(LIBSUBCMD)-clean !! 62 clean:
92 $(call QUIET_CLEAN, objtool) $(RM) $(O 63 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
93 $(Q)find $(OUTPUT) -name '*.o' -delete 64 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
94 $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-t !! 65 $(Q)$(RM) $(OUTPUT)arch/x86/inat-tables.c $(OUTPUT)fixdep
95 66
96 FORCE: 67 FORCE:
97 68
98 .PHONY: clean FORCE 69 .PHONY: clean FORCE
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