diff options
Diffstat (limited to 'kernel/scripts/Makefile.host')
| -rw-r--r-- | kernel/scripts/Makefile.host | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/kernel/scripts/Makefile.host b/kernel/scripts/Makefile.host new file mode 100644 index 000000000..133edfae5 --- /dev/null +++ b/kernel/scripts/Makefile.host @@ -0,0 +1,128 @@ +# ========================================================================== +# 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)) + +# 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))) + +# output directory for programs/.o files +# hostprogs-y := tools/build may have been specified. +# Retrieve also directory of .o files from prog-objs or prog-cxxobjs notation +host-objdirs := $(dir $(__hostprogs) $(host-cobjs) $(host-cxxobjs)) + +host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs)))) + + +__hostprogs := $(addprefix $(obj)/,$(__hostprogs)) +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-objdirs := $(addprefix $(obj)/,$(host-objdirs)) + +obj-dirs += $(host-objdirs) + +##### +# 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) + +targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\ + $(host-cxxmulti) $(host-cxxobjs) |