[linux-block.git] / scripts / Makefile.host

# SPDX-License-Identifier: GPL-2.0
# ==========================================================================
# Building binaries on the host system
# Binaries are used during the compilation of the kernel, for example
# to preprocess a data file.
#
# Both C and C++ are supported, but preferred language is C for such utilities.
#
# Sample syntax (see Documentation/kbuild/makefiles.txt for reference)
# hostprogs-y := bin2hex
# Will compile bin2hex.c and create an executable named bin2hex
#
# hostprogs-y    := lxdialog
# lxdialog-objs := checklist.o lxdialog.o
# Will compile lxdialog.c and checklist.c, and then link the executable
# lxdialog, based on checklist.o and lxdialog.o
#
# hostprogs-y      := qconf
# qconf-cxxobjs   := qconf.o
# qconf-objs      := menu.o
# Will compile qconf as a C++ program, and menu as a C program.
# They are linked as C++ code to the executable qconf

__hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
host-cshlib := $(sort $(hostlibs-y) $(hostlibs-m))
host-cxxshlib := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m))

# C code
# Executables compiled from a single .c file
host-csingle	:= $(foreach m,$(__hostprogs), \
			$(if $($(m)-objs)$($(m)-cxxobjs),,$(m)))

# C executables linked based on several .o files
host-cmulti	:= $(foreach m,$(__hostprogs),\
		   $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))

# Object (.o) files compiled from .c files
host-cobjs	:= $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))

# C++ code
# C++ executables compiled from at least one .cc file
# and zero or more .c files
host-cxxmulti	:= $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))

# C++ Object (.o) files compiled from .cc files
host-cxxobjs	:= $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))

# Object (.o) files used by the shared libaries
host-cshobjs	:= $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
host-cxxshobjs	:= $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs))))

host-csingle	:= $(addprefix $(obj)/,$(host-csingle))
host-cmulti	:= $(addprefix $(obj)/,$(host-cmulti))
host-cobjs	:= $(addprefix $(obj)/,$(host-cobjs))
host-cxxmulti	:= $(addprefix $(obj)/,$(host-cxxmulti))
host-cxxobjs	:= $(addprefix $(obj)/,$(host-cxxobjs))
host-cshlib	:= $(addprefix $(obj)/,$(host-cshlib))
host-cxxshlib	:= $(addprefix $(obj)/,$(host-cxxshlib))
host-cshobjs	:= $(addprefix $(obj)/,$(host-cshobjs))
host-cxxshobjs	:= $(addprefix $(obj)/,$(host-cxxshobjs))

#####
# Handle options to gcc. Support building with separate output directory

_hostc_flags   = $(KBUILD_HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   \
                 $(HOSTCFLAGS_$(basetarget).o)
_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
                 $(HOSTCXXFLAGS_$(basetarget).o)

__hostc_flags	= $(_hostc_flags)
__hostcxx_flags	= $(_hostcxx_flags)

ifeq ($(KBUILD_EXTMOD),)
ifneq ($(srctree),.)
__hostc_flags	= -I$(obj) $(call flags,_hostc_flags)
__hostcxx_flags	= -I$(obj) $(call flags,_hostcxx_flags)
endif
endif

hostc_flags    = -Wp,-MD,$(depfile) $(__hostc_flags)
hostcxx_flags  = -Wp,-MD,$(depfile) $(__hostcxx_flags)

#####
# Compile programs on the host

# Create executable from a single .c file
# host-csingle -> Executable
quiet_cmd_host-csingle 	= HOSTCC  $@
      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
		$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(host-csingle): $(obj)/%: $(src)/%.c FORCE
	$(call if_changed_dep,host-csingle)

# Link an executable based on list of .o files, all plain c
# host-cmulti -> executable
quiet_cmd_host-cmulti	= HOSTLD  $@
      cmd_host-cmulti	= $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \
			  $(addprefix $(obj)/,$($(@F)-objs)) \
			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(host-cmulti): FORCE
	$(call if_changed,host-cmulti)
$(call multi_depend, $(host-cmulti), , -objs)

# Create .o file from a single .c file
# host-cobjs -> .o
quiet_cmd_host-cobjs	= HOSTCC  $@
      cmd_host-cobjs	= $(HOSTCC) $(hostc_flags) -c -o $@ $<
$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
	$(call if_changed_dep,host-cobjs)

# Link an executable based on list of .o files, a mixture of .c and .cc
# host-cxxmulti -> executable
quiet_cmd_host-cxxmulti	= HOSTLD  $@
      cmd_host-cxxmulti	= $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \
			  $(foreach o,objs cxxobjs,\
			  $(addprefix $(obj)/,$($(@F)-$(o)))) \
			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(host-cxxmulti): FORCE
	$(call if_changed,host-cxxmulti)
$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)

# Create .o file from a single .cc (C++) file
quiet_cmd_host-cxxobjs	= HOSTCXX $@
      cmd_host-cxxobjs	= $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
	$(call if_changed_dep,host-cxxobjs)

# Compile .c file, create position independent .o file
# host-cshobjs -> .o
quiet_cmd_host-cshobjs	= HOSTCC  -fPIC $@
      cmd_host-cshobjs	= $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
	$(call if_changed_dep,host-cshobjs)

# Compile .c file, create position independent .o file
# Note that plugin capable gcc versions can be either C or C++ based
# therefore plugin source files have to be compilable in both C and C++ mode.
# This is why a C++ compiler is invoked on a .c file.
# host-cxxshobjs -> .o
quiet_cmd_host-cxxshobjs	= HOSTCXX -fPIC $@
      cmd_host-cxxshobjs	= $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $<
$(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
	$(call if_changed_dep,host-cxxshobjs)

# Link a shared library, based on position independent .o files
# *.o -> .so shared library (host-cshlib)
quiet_cmd_host-cshlib	= HOSTLLD -shared $@
      cmd_host-cshlib	= $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(host-cshlib): FORCE
	$(call if_changed,host-cshlib)
$(call multi_depend, $(host-cshlib), .so, -objs)

# Link a shared library, based on position independent .o files
# *.o -> .so shared library (host-cxxshlib)
quiet_cmd_host-cxxshlib	= HOSTLLD -shared $@
      cmd_host-cxxshlib	= $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(host-cxxshlib): FORCE
	$(call if_changed,host-cxxshlib)
$(call multi_depend, $(host-cxxshlib), .so, -objs)

targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\
	   $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs)
Commit	Line	Data
b2441318	1	# SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	# ==========================================================================
	3	# Building binaries on the host system
	4	# Binaries are used during the compilation of the kernel, for example
	5	# to preprocess a data file.
	6	#
3156fd05	7	# Both C and C++ are supported, but preferred language is C for such utilities.
1da177e4	8	#
3156fd05	9	# Sample syntax (see Documentation/kbuild/makefiles.txt for reference)
1da177e4 LT	10	# hostprogs-y := bin2hex
	11	# Will compile bin2hex.c and create an executable named bin2hex
	12	#
	13	# hostprogs-y := lxdialog
	14	# lxdialog-objs := checklist.o lxdialog.o
	15	# Will compile lxdialog.c and checklist.c, and then link the executable
	16	# lxdialog, based on checklist.o and lxdialog.o
	17	#
	18	# hostprogs-y := qconf
	19	# qconf-cxxobjs := qconf.o
	20	# qconf-objs := menu.o
	21	# Will compile qconf as a C++ program, and menu as a C program.
	22	# They are linked as C++ code to the executable qconf
	23
8f5cbd7e	24	__hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
24403874 ER	25	host-cshlib := $(sort $(hostlibs-y) $(hostlibs-m))
24403874 ER	26	host-cxxshlib := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m))
1da177e4	27
1da177e4 LT	28	# C code
1da177e4 LT	29	# Executables compiled from a single .c file
edb950c1 MY	30	host-csingle := $(foreach m,$(__hostprogs), \
edb950c1 MY	31	$(if $($(m)-objs)$($(m)-cxxobjs),,$(m)))
1da177e4 LT	32
	33	# C executables linked based on several .o files
	34	host-cmulti := $(foreach m,$(__hostprogs),\
	35	$(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
	36
	37	# Object (.o) files compiled from .c files
	38	host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
	39
	40	# C++ code
d8d9efe2	41	# C++ executables compiled from at least one .cc file
1da177e4 LT	42	# and zero or more .c files
	43	host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
	44
	45	# C++ Object (.o) files compiled from .cc files
	46	host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
	47
24403874 ER	48	# Object (.o) files used by the shared libaries
	49	host-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
	50	host-cxxshobjs := $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs))))
	51
1da177e4 LT	52	host-csingle := $(addprefix $(obj)/,$(host-csingle))
	53	host-cmulti := $(addprefix $(obj)/,$(host-cmulti))
	54	host-cobjs := $(addprefix $(obj)/,$(host-cobjs))
	55	host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti))
	56	host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs))
24403874 ER	57	host-cshlib := $(addprefix $(obj)/,$(host-cshlib))
	58	host-cxxshlib := $(addprefix $(obj)/,$(host-cxxshlib))
	59	host-cshobjs := $(addprefix $(obj)/,$(host-cshobjs))
	60	host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs))
1da177e4 LT	61
	62	#####
	63	# Handle options to gcc. Support building with separate output directory
	64
96f14fe7	65	_hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
5e8d780d	66	$(HOSTCFLAGS_$(basetarget).o)
10844aeb	67	_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
5e8d780d	68	$(HOSTCXXFLAGS_$(basetarget).o)
1da177e4	69
1da177e4 LT	70	__hostc_flags = $(_hostc_flags)
1da177e4 LT	71	__hostcxx_flags = $(_hostcxx_flags)
58156ba4 MY	72
58156ba4 MY	73	ifeq ($(KBUILD_EXTMOD),)
a9a49c2a	74	ifneq ($(srctree),.)
1da177e4 LT	75	__hostc_flags = -I$(obj) $(call flags,_hostc_flags)
	76	__hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
	77	endif
58156ba4	78	endif
1da177e4 LT	79
	80	hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags)
	81	hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags)
	82
	83	#####
	84	# Compile programs on the host
	85
	86	# Create executable from a single .c file
	87	# host-csingle -> Executable
	88	quiet_cmd_host-csingle = HOSTCC $@
b90a3680	89	cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
8377bd2b	90	$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
767e581d	91	$(host-csingle): $(obj)/%: $(src)/%.c FORCE
1da177e4 LT	92	$(call if_changed_dep,host-csingle)
	93
	94	# Link an executable based on list of .o files, all plain c
	95	# host-cmulti -> executable
	96	quiet_cmd_host-cmulti = HOSTLD $@
b90a3680	97	cmd_host-cmulti = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \
1da177e4	98	$(addprefix $(obj)/,$($(@F)-objs)) \
8377bd2b	99	$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
97e3226e	100	$(host-cmulti): FORCE
1da177e4	101	$(call if_changed,host-cmulti)
97e3226e	102	$(call multi_depend, $(host-cmulti), , -objs)
1da177e4 LT	103
	104	# Create .o file from a single .c file
	105	# host-cobjs -> .o
	106	quiet_cmd_host-cobjs = HOSTCC $@
	107	cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
767e581d	108	$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
1da177e4 LT	109	$(call if_changed_dep,host-cobjs)
	110
	111	# Link an executable based on list of .o files, a mixture of .c and .cc
	112	# host-cxxmulti -> executable
	113	quiet_cmd_host-cxxmulti = HOSTLD $@
b90a3680	114	cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \
1da177e4 LT	115	$(foreach o,objs cxxobjs,\
1da177e4 LT	116	$(addprefix $(obj)/,$($(@F)-$(o)))) \
8377bd2b	117	$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
97e3226e	118	$(host-cxxmulti): FORCE
1da177e4	119	$(call if_changed,host-cxxmulti)
97e3226e	120	$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
1da177e4 LT	121
	122	# Create .o file from a single .cc (C++) file
	123	quiet_cmd_host-cxxobjs = HOSTCXX $@
	124	cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
767e581d	125	$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
1da177e4 LT	126	$(call if_changed_dep,host-cxxobjs)
1da177e4 LT	127
24403874 ER	128	# Compile .c file, create position independent .o file
	129	# host-cshobjs -> .o
	130	quiet_cmd_host-cshobjs = HOSTCC -fPIC $@
	131	cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
	132	$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
	133	$(call if_changed_dep,host-cshobjs)
	134
	135	# Compile .c file, create position independent .o file
	136	# Note that plugin capable gcc versions can be either C or C++ based
	137	# therefore plugin source files have to be compilable in both C and C++ mode.
	138	# This is why a C++ compiler is invoked on a .c file.
	139	# host-cxxshobjs -> .o
	140	quiet_cmd_host-cxxshobjs = HOSTCXX -fPIC $@
	141	cmd_host-cxxshobjs = $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $<
	142	$(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
	143	$(call if_changed_dep,host-cxxshobjs)
	144
	145	# Link a shared library, based on position independent .o files
	146	# *.o -> .so shared library (host-cshlib)
	147	quiet_cmd_host-cshlib = HOSTLLD -shared $@
b90a3680	148	cmd_host-cshlib = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
24403874	149	$(addprefix $(obj)/,$($(@F:.so=-objs))) \
8377bd2b	150	$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
24403874 ER	151	$(host-cshlib): FORCE
	152	$(call if_changed,host-cshlib)
	153	$(call multi_depend, $(host-cshlib), .so, -objs)
	154
	155	# Link a shared library, based on position independent .o files
	156	# *.o -> .so shared library (host-cxxshlib)
	157	quiet_cmd_host-cxxshlib = HOSTLLD -shared $@
b90a3680	158	cmd_host-cxxshlib = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
24403874	159	$(addprefix $(obj)/,$($(@F:.so=-objs))) \
8377bd2b	160	$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
24403874 ER	161	$(host-cxxshlib): FORCE
	162	$(call if_changed,host-cxxshlib)
	163	$(call multi_depend, $(host-cxxshlib), .so, -objs)
	164
1da177e4	165	targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\
24403874	166	$(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs)