Loading...
1# ==========================================================================
2# Building binaries on the host system
3# Binaries are used during the compilation of the kernel, for example
4# to preprocess a data file.
5#
6# Both C and C++ are supported, but preferred language is C for such utilities.
7#
8# Sample syntax (see Documentation/kbuild/makefiles.txt for reference)
9# hostprogs-y := bin2hex
10# Will compile bin2hex.c and create an executable named bin2hex
11#
12# hostprogs-y := lxdialog
13# lxdialog-objs := checklist.o lxdialog.o
14# Will compile lxdialog.c and checklist.c, and then link the executable
15# lxdialog, based on checklist.o and lxdialog.o
16#
17# hostprogs-y := qconf
18# qconf-cxxobjs := qconf.o
19# qconf-objs := menu.o
20# Will compile qconf as a C++ program, and menu as a C program.
21# They are linked as C++ code to the executable qconf
22
23__hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
24
25# C code
26# Executables compiled from a single .c file
27host-csingle := $(foreach m,$(__hostprogs), \
28 $(if $($(m)-objs)$($(m)-cxxobjs),,$(m)))
29
30# C executables linked based on several .o files
31host-cmulti := $(foreach m,$(__hostprogs),\
32 $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
33
34# Object (.o) files compiled from .c files
35host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
36
37# C++ code
38# C++ executables compiled from at least one .cc file
39# and zero or more .c files
40host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
41
42# C++ Object (.o) files compiled from .cc files
43host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
44
45# output directory for programs/.o files
46# hostprogs-y := tools/build may have been specified.
47# Retrieve also directory of .o files from prog-objs or prog-cxxobjs notation
48host-objdirs := $(dir $(__hostprogs) $(host-cobjs) $(host-cxxobjs))
49
50host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
51
52
53__hostprogs := $(addprefix $(obj)/,$(__hostprogs))
54host-csingle := $(addprefix $(obj)/,$(host-csingle))
55host-cmulti := $(addprefix $(obj)/,$(host-cmulti))
56host-cobjs := $(addprefix $(obj)/,$(host-cobjs))
57host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti))
58host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs))
59host-objdirs := $(addprefix $(obj)/,$(host-objdirs))
60
61obj-dirs += $(host-objdirs)
62
63#####
64# Handle options to gcc. Support building with separate output directory
65
66_hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
67 $(HOSTCFLAGS_$(basetarget).o)
68_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
69 $(HOSTCXXFLAGS_$(basetarget).o)
70
71ifeq ($(KBUILD_SRC),)
72__hostc_flags = $(_hostc_flags)
73__hostcxx_flags = $(_hostcxx_flags)
74else
75__hostc_flags = -I$(obj) $(call flags,_hostc_flags)
76__hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
77endif
78
79hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags)
80hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags)
81
82#####
83# Compile programs on the host
84
85# Create executable from a single .c file
86# host-csingle -> Executable
87quiet_cmd_host-csingle = HOSTCC $@
88 cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \
89 $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
90$(host-csingle): $(obj)/%: $(src)/%.c FORCE
91 $(call if_changed_dep,host-csingle)
92
93# Link an executable based on list of .o files, all plain c
94# host-cmulti -> executable
95quiet_cmd_host-cmulti = HOSTLD $@
96 cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
97 $(addprefix $(obj)/,$($(@F)-objs)) \
98 $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
99$(host-cmulti): FORCE
100 $(call if_changed,host-cmulti)
101$(call multi_depend, $(host-cmulti), , -objs)
102
103# Create .o file from a single .c file
104# host-cobjs -> .o
105quiet_cmd_host-cobjs = HOSTCC $@
106 cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
107$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
108 $(call if_changed_dep,host-cobjs)
109
110# Link an executable based on list of .o files, a mixture of .c and .cc
111# host-cxxmulti -> executable
112quiet_cmd_host-cxxmulti = HOSTLD $@
113 cmd_host-cxxmulti = $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
114 $(foreach o,objs cxxobjs,\
115 $(addprefix $(obj)/,$($(@F)-$(o)))) \
116 $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
117$(host-cxxmulti): FORCE
118 $(call if_changed,host-cxxmulti)
119$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
120
121# Create .o file from a single .cc (C++) file
122quiet_cmd_host-cxxobjs = HOSTCXX $@
123 cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
124$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
125 $(call if_changed_dep,host-cxxobjs)
126
127targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\
128 $(host-cxxmulti) $(host-cxxobjs)
1# SPDX-License-Identifier: GPL-2.0
2
3# LEX
4# ---------------------------------------------------------------------------
5quiet_cmd_flex = LEX $@
6 cmd_flex = $(LEX) -o$@ -L $<
7
8$(obj)/%.lex.c: $(src)/%.l FORCE
9 $(call if_changed,flex)
10
11# YACC
12# ---------------------------------------------------------------------------
13quiet_cmd_bison = YACC $(basename $@).[ch]
14 cmd_bison = $(YACC) -o $(basename $@).c --defines=$(basename $@).h -t -l $<
15
16$(obj)/%.tab.c $(obj)/%.tab.h: $(src)/%.y FORCE
17 $(call if_changed,bison)
18
19# ==========================================================================
20# Building binaries on the host system
21# Binaries are used during the compilation of the kernel, for example
22# to preprocess a data file.
23#
24# Both C and C++ are supported, but preferred language is C for such utilities.
25#
26# Sample syntax (see Documentation/kbuild/makefiles.rst for reference)
27# hostprogs := bin2hex
28# Will compile bin2hex.c and create an executable named bin2hex
29#
30# hostprogs := lxdialog
31# lxdialog-objs := checklist.o lxdialog.o
32# Will compile lxdialog.c and checklist.c, and then link the executable
33# lxdialog, based on checklist.o and lxdialog.o
34#
35# hostprogs := qconf
36# qconf-cxxobjs := qconf.o
37# qconf-objs := menu.o
38# Will compile qconf as a C++ program, and menu as a C program.
39# They are linked as C++ code to the executable qconf
40
41# C code
42# Executables compiled from a single .c file
43host-csingle := $(foreach m,$(hostprogs), \
44 $(if $($(m)-objs)$($(m)-cxxobjs),,$(m)))
45
46# C executables linked based on several .o files
47host-cmulti := $(foreach m,$(hostprogs),\
48 $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
49
50# Object (.o) files compiled from .c files
51host-cobjs := $(sort $(foreach m,$(hostprogs),$($(m)-objs)))
52
53# C++ code
54# C++ executables compiled from at least one .cc file
55# and zero or more .c files
56host-cxxmulti := $(foreach m,$(hostprogs),$(if $($(m)-cxxobjs),$(m)))
57
58# C++ Object (.o) files compiled from .cc files
59host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
60
61host-csingle := $(addprefix $(obj)/,$(host-csingle))
62host-cmulti := $(addprefix $(obj)/,$(host-cmulti))
63host-cobjs := $(addprefix $(obj)/,$(host-cobjs))
64host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti))
65host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs))
66
67#####
68# Handle options to gcc. Support building with separate output directory
69
70_hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
71 $(HOSTCFLAGS_$(target-stem).o)
72_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
73 $(HOSTCXXFLAGS_$(target-stem).o)
74
75# $(objtree)/$(obj) for including generated headers from checkin source files
76ifeq ($(KBUILD_EXTMOD),)
77ifdef building_out_of_srctree
78_hostc_flags += -I $(objtree)/$(obj)
79_hostcxx_flags += -I $(objtree)/$(obj)
80endif
81endif
82
83hostc_flags = -Wp,-MMD,$(depfile) $(_hostc_flags)
84hostcxx_flags = -Wp,-MMD,$(depfile) $(_hostcxx_flags)
85
86#####
87# Compile programs on the host
88
89# Create executable from a single .c file
90# host-csingle -> Executable
91quiet_cmd_host-csingle = HOSTCC $@
92 cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
93 $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
94$(host-csingle): $(obj)/%: $(src)/%.c FORCE
95 $(call if_changed_dep,host-csingle)
96
97# Link an executable based on list of .o files, all plain c
98# host-cmulti -> executable
99quiet_cmd_host-cmulti = HOSTLD $@
100 cmd_host-cmulti = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \
101 $(addprefix $(obj)/, $($(target-stem)-objs)) \
102 $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
103$(host-cmulti): FORCE
104 $(call if_changed,host-cmulti)
105$(call multi_depend, $(host-cmulti), , -objs)
106
107# Create .o file from a single .c file
108# host-cobjs -> .o
109quiet_cmd_host-cobjs = HOSTCC $@
110 cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
111$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
112 $(call if_changed_dep,host-cobjs)
113
114# Link an executable based on list of .o files, a mixture of .c and .cc
115# host-cxxmulti -> executable
116quiet_cmd_host-cxxmulti = HOSTLD $@
117 cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \
118 $(foreach o,objs cxxobjs,\
119 $(addprefix $(obj)/, $($(target-stem)-$(o)))) \
120 $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
121$(host-cxxmulti): FORCE
122 $(call if_changed,host-cxxmulti)
123$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
124
125# Create .o file from a single .cc (C++) file
126quiet_cmd_host-cxxobjs = HOSTCXX $@
127 cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
128$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
129 $(call if_changed_dep,host-cxxobjs)
130
131targets += $(host-csingle) $(host-cmulti) $(host-cobjs) \
132 $(host-cxxmulti) $(host-cxxobjs)