1*22433fc5SMasahiro Yamada# ========================================================================== 2*22433fc5SMasahiro Yamada# Building binaries on the host system 3*22433fc5SMasahiro Yamada# Binaries are used during the compilation of the kernel, for example 4*22433fc5SMasahiro Yamada# to preprocess a data file. 5*22433fc5SMasahiro Yamada# 6*22433fc5SMasahiro Yamada# Both C and C++ are supported, but preferred language is C for such utilities. 7*22433fc5SMasahiro Yamada# 8*22433fc5SMasahiro Yamada# Sample syntax (see Documentation/kbuild/makefiles.txt for reference) 9*22433fc5SMasahiro Yamada# hostprogs-y := bin2hex 10*22433fc5SMasahiro Yamada# Will compile bin2hex.c and create an executable named bin2hex 11*22433fc5SMasahiro Yamada# 12*22433fc5SMasahiro Yamada# hostprogs-y := lxdialog 13*22433fc5SMasahiro Yamada# lxdialog-objs := checklist.o lxdialog.o 14*22433fc5SMasahiro Yamada# Will compile lxdialog.c and checklist.c, and then link the executable 15*22433fc5SMasahiro Yamada# lxdialog, based on checklist.o and lxdialog.o 16*22433fc5SMasahiro Yamada# 17*22433fc5SMasahiro Yamada# hostprogs-y := qconf 18*22433fc5SMasahiro Yamada# qconf-cxxobjs := qconf.o 19*22433fc5SMasahiro Yamada# qconf-objs := menu.o 20*22433fc5SMasahiro Yamada# Will compile qconf as a C++ program, and menu as a C program. 21*22433fc5SMasahiro Yamada# They are linked as C++ code to the executable qconf 22*22433fc5SMasahiro Yamada 23*22433fc5SMasahiro Yamada# hostprogs-y := conf 24*22433fc5SMasahiro Yamada# conf-objs := conf.o libkconfig.so 25*22433fc5SMasahiro Yamada# libkconfig-objs := expr.o type.o 26*22433fc5SMasahiro Yamada# Will create a shared library named libkconfig.so that consists of 27*22433fc5SMasahiro Yamada# expr.o and type.o (they are both compiled as C code and the object files 28*22433fc5SMasahiro Yamada# are made as position independent code). 29*22433fc5SMasahiro Yamada# conf.c is compiled as a C program, and conf.o is linked together with 30*22433fc5SMasahiro Yamada# libkconfig.so as the executable conf. 31*22433fc5SMasahiro Yamada# Note: Shared libraries consisting of C++ files are not supported 32*22433fc5SMasahiro Yamada 33*22433fc5SMasahiro Yamada__hostprogs := $(sort $(hostprogs-y) $(hostprogs-m)) 34*22433fc5SMasahiro Yamada 35*22433fc5SMasahiro Yamada# C code 36*22433fc5SMasahiro Yamada# Executables compiled from a single .c file 37*22433fc5SMasahiro Yamadahost-csingle := $(foreach m,$(__hostprogs),$(if $($(m)-objs),,$(m))) 38*22433fc5SMasahiro Yamada 39*22433fc5SMasahiro Yamada# C executables linked based on several .o files 40*22433fc5SMasahiro Yamadahost-cmulti := $(foreach m,$(__hostprogs),\ 41*22433fc5SMasahiro Yamada $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m)))) 42*22433fc5SMasahiro Yamada 43*22433fc5SMasahiro Yamada# Object (.o) files compiled from .c files 44*22433fc5SMasahiro Yamadahost-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs))) 45*22433fc5SMasahiro Yamada 46*22433fc5SMasahiro Yamada# C++ code 47*22433fc5SMasahiro Yamada# C++ executables compiled from at least on .cc file 48*22433fc5SMasahiro Yamada# and zero or more .c files 49*22433fc5SMasahiro Yamadahost-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m))) 50*22433fc5SMasahiro Yamada 51*22433fc5SMasahiro Yamada# C++ Object (.o) files compiled from .cc files 52*22433fc5SMasahiro Yamadahost-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs))) 53*22433fc5SMasahiro Yamada 54*22433fc5SMasahiro Yamada# Shared libaries (only .c supported) 55*22433fc5SMasahiro Yamada# Shared libraries (.so) - all .so files referenced in "xxx-objs" 56*22433fc5SMasahiro Yamadahost-cshlib := $(sort $(filter %.so, $(host-cobjs))) 57*22433fc5SMasahiro Yamada# Remove .so files from "xxx-objs" 58*22433fc5SMasahiro Yamadahost-cobjs := $(filter-out %.so,$(host-cobjs)) 59*22433fc5SMasahiro Yamada 60*22433fc5SMasahiro Yamada#Object (.o) files used by the shared libaries 61*22433fc5SMasahiro Yamadahost-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs)))) 62*22433fc5SMasahiro Yamada 63*22433fc5SMasahiro Yamada# output directory for programs/.o files 64*22433fc5SMasahiro Yamada# hostprogs-y := tools/build may have been specified. Retrieve directory 65*22433fc5SMasahiro Yamadahost-objdirs := $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f)))) 66*22433fc5SMasahiro Yamada# directory of .o files from prog-objs notation 67*22433fc5SMasahiro Yamadahost-objdirs += $(foreach f,$(host-cmulti), \ 68*22433fc5SMasahiro Yamada $(foreach m,$($(f)-objs), \ 69*22433fc5SMasahiro Yamada $(if $(dir $(m)),$(dir $(m))))) 70*22433fc5SMasahiro Yamada# directory of .o files from prog-cxxobjs notation 71*22433fc5SMasahiro Yamadahost-objdirs += $(foreach f,$(host-cxxmulti), \ 72*22433fc5SMasahiro Yamada $(foreach m,$($(f)-cxxobjs), \ 73*22433fc5SMasahiro Yamada $(if $(dir $(m)),$(dir $(m))))) 74*22433fc5SMasahiro Yamada 75*22433fc5SMasahiro Yamadahost-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs)))) 76*22433fc5SMasahiro Yamada 77*22433fc5SMasahiro Yamada 78*22433fc5SMasahiro Yamada__hostprogs := $(addprefix $(obj)/,$(__hostprogs)) 79*22433fc5SMasahiro Yamadahost-csingle := $(addprefix $(obj)/,$(host-csingle)) 80*22433fc5SMasahiro Yamadahost-cmulti := $(addprefix $(obj)/,$(host-cmulti)) 81*22433fc5SMasahiro Yamadahost-cobjs := $(addprefix $(obj)/,$(host-cobjs)) 82*22433fc5SMasahiro Yamadahost-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti)) 83*22433fc5SMasahiro Yamadahost-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs)) 84*22433fc5SMasahiro Yamadahost-cshlib := $(addprefix $(obj)/,$(host-cshlib)) 85*22433fc5SMasahiro Yamadahost-cshobjs := $(addprefix $(obj)/,$(host-cshobjs)) 86*22433fc5SMasahiro Yamadahost-objdirs := $(addprefix $(obj)/,$(host-objdirs)) 87*22433fc5SMasahiro Yamada 88*22433fc5SMasahiro Yamadaobj-dirs += $(host-objdirs) 89*22433fc5SMasahiro Yamada 90*22433fc5SMasahiro Yamada##### 91*22433fc5SMasahiro Yamada# Handle options to gcc. Support building with separate output directory 92*22433fc5SMasahiro Yamada 93*22433fc5SMasahiro Yamada_hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \ 94*22433fc5SMasahiro Yamada $(HOSTCFLAGS_$(basetarget).o) 95*22433fc5SMasahiro Yamada_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \ 96*22433fc5SMasahiro Yamada $(HOSTCXXFLAGS_$(basetarget).o) 97*22433fc5SMasahiro Yamada 98*22433fc5SMasahiro Yamadaifeq ($(KBUILD_SRC),) 99*22433fc5SMasahiro Yamada__hostc_flags = $(_hostc_flags) 100*22433fc5SMasahiro Yamada__hostcxx_flags = $(_hostcxx_flags) 101*22433fc5SMasahiro Yamadaelse 102*22433fc5SMasahiro Yamada__hostc_flags = -I$(obj) $(call flags,_hostc_flags) 103*22433fc5SMasahiro Yamada__hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags) 104*22433fc5SMasahiro Yamadaendif 105*22433fc5SMasahiro Yamada 106*22433fc5SMasahiro Yamadahostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags) 107*22433fc5SMasahiro Yamadahostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags) 108*22433fc5SMasahiro Yamada 109*22433fc5SMasahiro Yamada##### 110*22433fc5SMasahiro Yamada# Compile programs on the host 111*22433fc5SMasahiro Yamada 112*22433fc5SMasahiro Yamada# Create executable from a single .c file 113*22433fc5SMasahiro Yamada# host-csingle -> Executable 114*22433fc5SMasahiro Yamadaquiet_cmd_host-csingle = HOSTCC $@ 115*22433fc5SMasahiro Yamada cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \ 116*22433fc5SMasahiro Yamada $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) 117*22433fc5SMasahiro Yamada$(host-csingle): $(obj)/%: $(src)/%.c FORCE 118*22433fc5SMasahiro Yamada $(call if_changed_dep,host-csingle) 119*22433fc5SMasahiro Yamada 120*22433fc5SMasahiro Yamada# Link an executable based on list of .o files, all plain c 121*22433fc5SMasahiro Yamada# host-cmulti -> executable 122*22433fc5SMasahiro Yamadaquiet_cmd_host-cmulti = HOSTLD $@ 123*22433fc5SMasahiro Yamada cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \ 124*22433fc5SMasahiro Yamada $(addprefix $(obj)/,$($(@F)-objs)) \ 125*22433fc5SMasahiro Yamada $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) 126*22433fc5SMasahiro Yamada$(host-cmulti): $(obj)/%: $(host-cobjs) $(host-cshlib) FORCE 127*22433fc5SMasahiro Yamada $(call if_changed,host-cmulti) 128*22433fc5SMasahiro Yamada 129*22433fc5SMasahiro Yamada# Create .o file from a single .c file 130*22433fc5SMasahiro Yamada# host-cobjs -> .o 131*22433fc5SMasahiro Yamadaquiet_cmd_host-cobjs = HOSTCC $@ 132*22433fc5SMasahiro Yamada cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $< 133*22433fc5SMasahiro Yamada$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE 134*22433fc5SMasahiro Yamada $(call if_changed_dep,host-cobjs) 135*22433fc5SMasahiro Yamada 136*22433fc5SMasahiro Yamada# Link an executable based on list of .o files, a mixture of .c and .cc 137*22433fc5SMasahiro Yamada# host-cxxmulti -> executable 138*22433fc5SMasahiro Yamadaquiet_cmd_host-cxxmulti = HOSTLD $@ 139*22433fc5SMasahiro Yamada cmd_host-cxxmulti = $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \ 140*22433fc5SMasahiro Yamada $(foreach o,objs cxxobjs,\ 141*22433fc5SMasahiro Yamada $(addprefix $(obj)/,$($(@F)-$(o)))) \ 142*22433fc5SMasahiro Yamada $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) 143*22433fc5SMasahiro Yamada$(host-cxxmulti): $(obj)/%: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE 144*22433fc5SMasahiro Yamada $(call if_changed,host-cxxmulti) 145*22433fc5SMasahiro Yamada 146*22433fc5SMasahiro Yamada# Create .o file from a single .cc (C++) file 147*22433fc5SMasahiro Yamadaquiet_cmd_host-cxxobjs = HOSTCXX $@ 148*22433fc5SMasahiro Yamada cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $< 149*22433fc5SMasahiro Yamada$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE 150*22433fc5SMasahiro Yamada $(call if_changed_dep,host-cxxobjs) 151*22433fc5SMasahiro Yamada 152*22433fc5SMasahiro Yamada# Compile .c file, create position independent .o file 153*22433fc5SMasahiro Yamada# host-cshobjs -> .o 154*22433fc5SMasahiro Yamadaquiet_cmd_host-cshobjs = HOSTCC -fPIC $@ 155*22433fc5SMasahiro Yamada cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $< 156*22433fc5SMasahiro Yamada$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE 157*22433fc5SMasahiro Yamada $(call if_changed_dep,host-cshobjs) 158*22433fc5SMasahiro Yamada 159*22433fc5SMasahiro Yamada# Link a shared library, based on position independent .o files 160*22433fc5SMasahiro Yamada# *.o -> .so shared library (host-cshlib) 161*22433fc5SMasahiro Yamadaquiet_cmd_host-cshlib = HOSTLLD -shared $@ 162*22433fc5SMasahiro Yamada cmd_host-cshlib = $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \ 163*22433fc5SMasahiro Yamada $(addprefix $(obj)/,$($(@F:.so=-objs))) \ 164*22433fc5SMasahiro Yamada $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) 165*22433fc5SMasahiro Yamada$(host-cshlib): $(obj)/%: $(host-cshobjs) FORCE 166*22433fc5SMasahiro Yamada $(call if_changed,host-cshlib) 167*22433fc5SMasahiro Yamada 168*22433fc5SMasahiro Yamadatargets += $(host-csingle) $(host-cmulti) $(host-cobjs)\ 169*22433fc5SMasahiro Yamada $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) 170*22433fc5SMasahiro Yamada 171