[mirror_ubuntu-bionic-kernel.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   = $(HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   \
                 $(HOSTCFLAGS_$(basetarget).o)
_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
                 $(HOSTCXXFLAGS_$(basetarget).o)

ifeq ($(KBUILD_SRC),)
__hostc_flags	= $(_hostc_flags)
__hostcxx_flags	= $(_hostcxx_flags)
else
__hostc_flags	= -I$(obj) $(call flags,_hostc_flags)
__hostcxx_flags	= -I$(obj) $(call flags,_hostcxx_flags)
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) -o $@ $< \
	  	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@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) $(HOSTLDFLAGS) -o $@ \
			  $(addprefix $(obj)/,$($(@F)-objs)) \
			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@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) $(HOSTLDFLAGS) -o $@ \
			  $(foreach o,objs cxxobjs,\
			  $(addprefix $(obj)/,$($(@F)-$(o)))) \
			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@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) $(HOSTLDFLAGS) -shared -o $@ \
			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@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) $(HOSTLDFLAGS) -shared -o $@ \
			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@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
5e8d780d SR	65	_hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
	66	$(HOSTCFLAGS_$(basetarget).o)
	67	_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
	68	$(HOSTCXXFLAGS_$(basetarget).o)
1da177e4 LT	69
	70	ifeq ($(KBUILD_SRC),)
	71	__hostc_flags = $(_hostc_flags)
	72	__hostcxx_flags = $(_hostcxx_flags)
	73	else
	74	__hostc_flags = -I$(obj) $(call flags,_hostc_flags)
	75	__hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
	76	endif
	77
	78	hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags)
	79	hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags)
	80
	81	#####
	82	# Compile programs on the host
	83
	84	# Create executable from a single .c file
	85	# host-csingle -> Executable
	86	quiet_cmd_host-csingle = HOSTCC $@
e0af0d85 MU	87	cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \
e0af0d85 MU	88	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
767e581d	89	$(host-csingle): $(obj)/%: $(src)/%.c FORCE
1da177e4 LT	90	$(call if_changed_dep,host-csingle)
	91
	92	# Link an executable based on list of .o files, all plain c
	93	# host-cmulti -> executable
	94	quiet_cmd_host-cmulti = HOSTLD $@
	95	cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
	96	$(addprefix $(obj)/,$($(@F)-objs)) \
	97	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
97e3226e	98	$(host-cmulti): FORCE
1da177e4	99	$(call if_changed,host-cmulti)
97e3226e	100	$(call multi_depend, $(host-cmulti), , -objs)
1da177e4 LT	101
	102	# Create .o file from a single .c file
	103	# host-cobjs -> .o
	104	quiet_cmd_host-cobjs = HOSTCC $@
	105	cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
767e581d	106	$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
1da177e4 LT	107	$(call if_changed_dep,host-cobjs)
	108
	109	# Link an executable based on list of .o files, a mixture of .c and .cc
	110	# host-cxxmulti -> executable
	111	quiet_cmd_host-cxxmulti = HOSTLD $@
	112	cmd_host-cxxmulti = $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
	113	$(foreach o,objs cxxobjs,\
	114	$(addprefix $(obj)/,$($(@F)-$(o)))) \
	115	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
97e3226e	116	$(host-cxxmulti): FORCE
1da177e4	117	$(call if_changed,host-cxxmulti)
97e3226e	118	$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
1da177e4 LT	119
	120	# Create .o file from a single .cc (C++) file
	121	quiet_cmd_host-cxxobjs = HOSTCXX $@
	122	cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
767e581d	123	$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
1da177e4 LT	124	$(call if_changed_dep,host-cxxobjs)
1da177e4 LT	125
24403874 ER	126	# Compile .c file, create position independent .o file
	127	# host-cshobjs -> .o
	128	quiet_cmd_host-cshobjs = HOSTCC -fPIC $@
	129	cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
	130	$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
	131	$(call if_changed_dep,host-cshobjs)
	132
	133	# Compile .c file, create position independent .o file
	134	# Note that plugin capable gcc versions can be either C or C++ based
	135	# therefore plugin source files have to be compilable in both C and C++ mode.
	136	# This is why a C++ compiler is invoked on a .c file.
	137	# host-cxxshobjs -> .o
	138	quiet_cmd_host-cxxshobjs = HOSTCXX -fPIC $@
	139	cmd_host-cxxshobjs = $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $<
	140	$(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
	141	$(call if_changed_dep,host-cxxshobjs)
	142
	143	# Link a shared library, based on position independent .o files
	144	# *.o -> .so shared library (host-cshlib)
	145	quiet_cmd_host-cshlib = HOSTLLD -shared $@
	146	cmd_host-cshlib = $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
	147	$(addprefix $(obj)/,$($(@F:.so=-objs))) \
	148	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
	149	$(host-cshlib): FORCE
	150	$(call if_changed,host-cshlib)
	151	$(call multi_depend, $(host-cshlib), .so, -objs)
	152
	153	# Link a shared library, based on position independent .o files
	154	# *.o -> .so shared library (host-cxxshlib)
	155	quiet_cmd_host-cxxshlib = HOSTLLD -shared $@
	156	cmd_host-cxxshlib = $(HOSTCXX) $(HOSTLDFLAGS) -shared -o $@ \
	157	$(addprefix $(obj)/,$($(@F:.so=-objs))) \
	158	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
	159	$(host-cxxshlib): FORCE
	160	$(call if_changed,host-cxxshlib)
	161	$(call multi_depend, $(host-cxxshlib), .so, -objs)
	162
1da177e4	163	targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\
24403874	164	$(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs)