Commit 767e581d authored by Sam Ravnborg's avatar Sam Ravnborg
Browse files

kbuild: enable use of code from a different dir 



To introduce support for source in one directory but output files
in another directory during a non O= build prefix all paths
with $(src) repsectively $(obj).

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 5447d34b

scripts/Makefile.build

+9 −10
Original line number Original line Diff line number Diff line
@@ -131,13 +131,13 @@ $(multi-objs-y:.o=.lst) : modname = $(modname-multi) 
quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@

quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@

cmd_cc_s_c       = $(CC) $(c_flags) -fverbose-asm -S -o $@ $<

cmd_cc_s_c       = $(CC) $(c_flags) -fverbose-asm -S -o $@ $<





%.s: %.c FORCE

$(obj)/%.s: $(src)/%.c FORCE

	$(call if_changed_dep,cc_s_c)

	$(call if_changed_dep,cc_s_c)





quiet_cmd_cc_i_c = CPP $(quiet_modtag) $@

quiet_cmd_cc_i_c = CPP $(quiet_modtag) $@

cmd_cc_i_c       = $(CPP) $(c_flags)   -o $@ $<

cmd_cc_i_c       = $(CPP) $(c_flags)   -o $@ $<





%.i: %.c FORCE

$(obj)/%.i: $(src)/%.c FORCE

	$(call if_changed_dep,cc_i_c)

	$(call if_changed_dep,cc_i_c)





quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@

quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
@@ -146,7 +146,7 @@ cmd_cc_symtypes_c = \ 
		| $(GENKSYMS) -T $@ >/dev/null;				\

		| $(GENKSYMS) -T $@ >/dev/null;				\

		test -s $@ || rm -f $@

		test -s $@ || rm -f $@





%.symtypes : %.c FORCE

$(obj)/%.symtypes : $(src)/%.c FORCE

	$(call if_changed_dep,cc_symtypes_c)

	$(call if_changed_dep,cc_symtypes_c)





# C (.c) files

# C (.c) files
@@ -198,14 +198,13 @@ define rule_cc_o_c 
endef

endef





# Built-in and composite module parts

# Built-in and composite module parts



$(obj)/%.o: $(src)/%.c FORCE

%.o: %.c FORCE

	$(call cmd,force_checksrc)

	$(call cmd,force_checksrc)

	$(call if_changed_rule,cc_o_c)

	$(call if_changed_rule,cc_o_c)





# Single-part modules are special since we need to mark them in $(MODVERDIR)

# Single-part modules are special since we need to mark them in $(MODVERDIR)





$(single-used-m): %.o: %.c FORCE

$(single-used-m): $(obj)/%.o: $(src)/%.c FORCE

	$(call cmd,force_checksrc)

	$(call cmd,force_checksrc)

	$(call if_changed_rule,cc_o_c)

	$(call if_changed_rule,cc_o_c)

	@{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod)

	@{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod)
@@ -215,7 +214,7 @@ quiet_cmd_cc_lst_c = MKLST $@ 
		     $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \

		     $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \

				     System.map $(OBJDUMP) > $@

				     System.map $(OBJDUMP) > $@





%.lst: %.c FORCE

$(obj)/%.lst: $(src)/%.c FORCE

	$(call if_changed_dep,cc_lst_c)

	$(call if_changed_dep,cc_lst_c)





# Compile assembler sources (.S)

# Compile assembler sources (.S)
@@ -229,13 +228,13 @@ $(real-objs-m:.o=.s): modkern_aflags := $(AFLAGS_MODULE) 
quiet_cmd_as_s_S = CPP $(quiet_modtag) $@

quiet_cmd_as_s_S = CPP $(quiet_modtag) $@

cmd_as_s_S       = $(CPP) $(a_flags)   -o $@ $< 

cmd_as_s_S       = $(CPP) $(a_flags)   -o $@ $< 





%.s: %.S FORCE

$(obj)/%.s: $(src)/%.S FORCE

	$(call if_changed_dep,as_s_S)

	$(call if_changed_dep,as_s_S)





quiet_cmd_as_o_S = AS $(quiet_modtag)  $@

quiet_cmd_as_o_S = AS $(quiet_modtag)  $@

cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<

cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<





%.o: %.S FORCE

$(obj)/%.o: $(src)/%.S FORCE

	$(call if_changed_dep,as_o_S)

	$(call if_changed_dep,as_o_S)





targets += $(real-objs-y) $(real-objs-m) $(lib-y)

targets += $(real-objs-y) $(real-objs-m) $(lib-y)
@@ -246,7 +245,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $(always) 
quiet_cmd_cpp_lds_S = LDS     $@

quiet_cmd_cpp_lds_S = LDS     $@

      cmd_cpp_lds_S = $(CPP) $(cpp_flags) -D__ASSEMBLY__ -o $@ $<

      cmd_cpp_lds_S = $(CPP) $(cpp_flags) -D__ASSEMBLY__ -o $@ $<





%.lds: %.lds.S FORCE

$(obj)/%.lds: $(src)/%.lds.S FORCE

	$(call if_changed_dep,cpp_lds_S)

	$(call if_changed_dep,cpp_lds_S)





# Build the compiled-in targets

# Build the compiled-in targets

scripts/Makefile.host

+7 −7
Original line number Original line Diff line number Diff line
@@ -114,7 +114,7 @@ hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags) 
quiet_cmd_host-csingle 	= HOSTCC  $@

quiet_cmd_host-csingle 	= HOSTCC  $@

      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) -o $@ $< \

      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) -o $@ $< \

	  	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

	  	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

$(host-csingle): %: %.c FORCE

$(host-csingle): $(obj)/%: $(src)/%.c FORCE

	$(call if_changed_dep,host-csingle)

	$(call if_changed_dep,host-csingle)





# Link an executable based on list of .o files, all plain c

# Link an executable based on list of .o files, all plain c
@@ -123,14 +123,14 @@ quiet_cmd_host-cmulti = HOSTLD $@ 
      cmd_host-cmulti	= $(HOSTCC) $(HOSTLDFLAGS) -o $@ \

      cmd_host-cmulti	= $(HOSTCC) $(HOSTLDFLAGS) -o $@ \

			  $(addprefix $(obj)/,$($(@F)-objs)) \

			  $(addprefix $(obj)/,$($(@F)-objs)) \

			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

$(host-cmulti): %: $(host-cobjs) $(host-cshlib) FORCE

$(host-cmulti): $(obj)/%: $(host-cobjs) $(host-cshlib) FORCE

	$(call if_changed,host-cmulti)

	$(call if_changed,host-cmulti)





# Create .o file from a single .c file

# Create .o file from a single .c file

# host-cobjs -> .o

# host-cobjs -> .o

quiet_cmd_host-cobjs	= HOSTCC  $@

quiet_cmd_host-cobjs	= HOSTCC  $@

      cmd_host-cobjs	= $(HOSTCC) $(hostc_flags) -c -o $@ $<

      cmd_host-cobjs	= $(HOSTCC) $(hostc_flags) -c -o $@ $<

$(host-cobjs): %.o: %.c FORCE

$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE

	$(call if_changed_dep,host-cobjs)

	$(call if_changed_dep,host-cobjs)





# Link an executable based on list of .o files, a mixture of .c and .cc

# Link an executable based on list of .o files, a mixture of .c and .cc
@@ -140,20 +140,20 @@ quiet_cmd_host-cxxmulti = HOSTLD $@ 
			  $(foreach o,objs cxxobjs,\

			  $(foreach o,objs cxxobjs,\

			  $(addprefix $(obj)/,$($(@F)-$(o)))) \

			  $(addprefix $(obj)/,$($(@F)-$(o)))) \

			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

$(host-cxxmulti): %: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE

$(host-cxxmulti): $(obj)/%: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE

	$(call if_changed,host-cxxmulti)

	$(call if_changed,host-cxxmulti)





# Create .o file from a single .cc (C++) file

# Create .o file from a single .cc (C++) file

quiet_cmd_host-cxxobjs	= HOSTCXX $@

quiet_cmd_host-cxxobjs	= HOSTCXX $@

      cmd_host-cxxobjs	= $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<

      cmd_host-cxxobjs	= $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<

$(host-cxxobjs): %.o: %.cc FORCE

$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE

	$(call if_changed_dep,host-cxxobjs)

	$(call if_changed_dep,host-cxxobjs)





# Compile .c file, create position independent .o file

# Compile .c file, create position independent .o file

# host-cshobjs -> .o

# host-cshobjs -> .o

quiet_cmd_host-cshobjs	= HOSTCC  -fPIC $@

quiet_cmd_host-cshobjs	= HOSTCC  -fPIC $@

      cmd_host-cshobjs	= $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<

      cmd_host-cshobjs	= $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<

$(host-cshobjs): %.o: %.c FORCE

$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE

	$(call if_changed_dep,host-cshobjs)

	$(call if_changed_dep,host-cshobjs)





# Link a shared library, based on position independent .o files

# Link a shared library, based on position independent .o files
@@ -162,7 +162,7 @@ quiet_cmd_host-cshlib = HOSTLLD -shared $@ 
      cmd_host-cshlib	= $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \

      cmd_host-cshlib	= $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \

			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \

			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \

			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))

$(host-cshlib): %: $(host-cshobjs) FORCE

$(host-cshlib): $(obj)/%: $(host-cshobjs) FORCE

	$(call if_changed,host-cshlib)

	$(call if_changed,host-cshlib)





targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\

targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\

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