xref: /openbmc/linux/tools/objtool/Makefile (revision bdb8bf7d) 
1# SPDX-License-Identifier: GPL-2.0
2include ../scripts/Makefile.include
3include ../scripts/Makefile.arch
4
5# always use the host compiler
6AR	 = $(HOSTAR)
7CC	 = $(HOSTCC)
8LD	 = $(HOSTLD)
9
10ifeq ($(srctree),)
11srctree := $(patsubst %/,%,$(dir $(CURDIR)))
12srctree := $(patsubst %/,%,$(dir $(srctree)))
13endif
14
15LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/
16ifneq ($(OUTPUT),)
17  LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd
18else
19  LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd
20endif
21LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a
22
23OBJTOOL    := $(OUTPUT)objtool
24OBJTOOL_IN := $(OBJTOOL)-in.o
25
26LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
27LIBELF_LIBS  := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
28
29all: $(OBJTOOL)
30
31INCLUDES := -I$(srctree)/tools/include \
32	    -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \
33	    -I$(srctree)/tools/arch/$(SRCARCH)/include	\
34	    -I$(srctree)/tools/objtool/include \
35	    -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \
36	    -I$(LIBSUBCMD_OUTPUT)/include
37WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed -Wno-nested-externs
38CFLAGS   := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS)
39LDFLAGS  += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)
40
41# Allow old libelf to be used:
42elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
43CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
44
45AWK = awk
46MKDIR = mkdir
47
48BUILD_ORC := n
49
50ifeq ($(SRCARCH),x86)
51	BUILD_ORC := y
52endif
53
54export BUILD_ORC
55export srctree OUTPUT CFLAGS SRCARCH AWK
56include $(srctree)/tools/build/Makefile.include
57
58$(OBJTOOL_IN): fixdep FORCE
59	@$(CONFIG_SHELL) ./sync-check.sh
60	@$(MAKE) $(build)=objtool
61
62$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
63	$(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
64
65
66$(LIBSUBCMD_OUTPUT):
67	@$(MKDIR) -p $@
68
69$(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE
70	@$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LIBSUBCMD_OUTPUT) \
71		DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir= \
72		$@ install_headers
73
74$(LIBSUBCMD)-clean:
75	$(call QUIET_CLEAN, libsubcmd)
76	$(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT)
77
78clean: $(LIBSUBCMD)-clean
79	$(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
80	$(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
81	$(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep
82
83FORCE:
84
85.PHONY: clean FORCE
86