X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=scripts%2FMakefile.build;h=277cfe0b71001e69bc67d3eda6407250d07d7ab8;hb=refs%2Fheads%2Fbci_test;hp=3cb445cc7432fdac293fcea287a62e437fee921f;hpb=b20e481ab595e9667c33e2393bdfe9a31870d11f;p=pandora-kernel.git diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 3cb445cc7432..277cfe0b7100 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -7,15 +7,45 @@ src := $(obj) PHONY := __build __build: -# Read .config if it exist, otherwise ignore +# Init all relevant variables used in kbuild files so +# 1) they have correct type +# 2) they do not inherit any value from the environment +obj-y := +obj-m := +lib-y := +lib-m := +always := +targets := +subdir-y := +subdir-m := +EXTRA_AFLAGS := +EXTRA_CFLAGS := +EXTRA_CPPFLAGS := +EXTRA_LDFLAGS := +asflags-y := +ccflags-y := +cppflags-y := +ldflags-y := + +# Read auto.conf if it exists, otherwise ignore -include include/config/auto.conf include scripts/Kbuild.include +# For backward compatibility check that these variables do not change +save-cflags := $(CFLAGS) + # The filename Kbuild has precedence over Makefile kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) -include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile) - +kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile) +include $(kbuild-file) + +# If the save-* variables changed error out +ifeq ($(KBUILD_NOPEDANTIC),) + ifneq ("$(save-cflags)","$(CFLAGS)") + $(error CFLAGS was changed in "$(kbuild-file)". Fix it to use EXTRA_CFLAGS) + endif +endif include scripts/Makefile.lib ifdef host-progs @@ -25,7 +55,7 @@ hostprogs-y += $(host-progs) endif endif -# Do not include host rules unles needed +# Do not include host rules unless needed ifneq ($(hostprogs-y)$(hostprogs-m),) include scripts/Makefile.host endif @@ -39,31 +69,6 @@ _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj)) _dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d))) endif - -ifdef EXTRA_TARGETS -$(warning kbuild: $(obj)/Makefile - Usage of EXTRA_TARGETS is obsolete in 2.6. Please fix!) -endif - -ifdef build-targets -$(warning kbuild: $(obj)/Makefile - Usage of build-targets is obsolete in 2.6. Please fix!) -endif - -ifdef export-objs -$(warning kbuild: $(obj)/Makefile - Usage of export-objs is obsolete in 2.6. Please fix!) -endif - -ifdef O_TARGET -$(warning kbuild: $(obj)/Makefile - Usage of O_TARGET := $(O_TARGET) is obsolete in 2.6. Please fix!) -endif - -ifdef L_TARGET -$(error kbuild: $(obj)/Makefile - Use of L_TARGET is replaced by lib-y in 2.6. Please fix!) -endif - -ifdef list-multi -$(warning kbuild: $(obj)/Makefile - list-multi := $(list-multi) is obsolete in 2.6. Please fix!) -endif - ifndef obj $(warning kbuild: Makefile.build is included improperly) endif @@ -78,10 +83,12 @@ ifneq ($(strip $(obj-y) $(obj-m) $(obj-n) $(obj-) $(lib-target)),) builtin-target := $(obj)/built-in.o endif +modorder-target := $(obj)/modules.order + # We keep a list of all modules in $(MODVERDIR) __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \ - $(if $(KBUILD_MODULES),$(obj-m)) \ + $(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \ $(subdir-ym) $(always) @: @@ -96,6 +103,10 @@ ifneq ($(KBUILD_CHECKSRC),0) endif endif +# Do section mismatch analysis for each module/built-in.o +ifdef CONFIG_DEBUG_SECTION_MISMATCH + cmd_secanalysis = ; scripts/mod/modpost $@ +endif # Compile C sources (.c) # --------------------------------------------------------------------------- @@ -131,13 +142,13 @@ $(multi-objs-y:.o=.lst) : modname = $(modname-multi) quiet_cmd_cc_s_c = CC $(quiet_modtag) $@ 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) quiet_cmd_cc_i_c = CPP $(quiet_modtag) $@ cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $< -%.i: %.c FORCE +$(obj)/%.i: $(src)/%.c FORCE $(call if_changed_dep,cc_i_c) quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@ @@ -146,7 +157,7 @@ cmd_cc_symtypes_c = \ | $(GENKSYMS) -T $@ >/dev/null; \ test -s $@ || rm -f $@ -%.symtypes : %.c FORCE +$(obj)/%.symtypes : $(src)/%.c FORCE $(call if_changed_dep,cc_symtypes_c) # C (.c) files @@ -191,20 +202,20 @@ define rule_cc_o_c $(call echo-cmd,checksrc) $(cmd_checksrc) \ $(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \ $(cmd_modversions) \ - scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > $(@D)/.$(@F).tmp; \ + scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \ + $(dot-target).tmp; \ rm -f $(depfile); \ - mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd + mv -f $(dot-target).tmp $(dot-target).cmd endef # Built-in and composite module parts - -%.o: %.c FORCE +$(obj)/%.o: $(src)/%.c FORCE $(call cmd,force_checksrc) $(call if_changed_rule,cc_o_c) # 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 if_changed_rule,cc_o_c) @{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod) @@ -214,7 +225,7 @@ quiet_cmd_cc_lst_c = MKLST $@ $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \ System.map $(OBJDUMP) > $@ -%.lst: %.c FORCE +$(obj)/%.lst: $(src)/%.c FORCE $(call if_changed_dep,cc_lst_c) # Compile assembler sources (.S) @@ -228,13 +239,13 @@ $(real-objs-m:.o=.s): modkern_aflags := $(AFLAGS_MODULE) quiet_cmd_as_s_S = CPP $(quiet_modtag) $@ cmd_as_s_S = $(CPP) $(a_flags) -o $@ $< -%.s: %.S FORCE +$(obj)/%.s: $(src)/%.S FORCE $(call if_changed_dep,as_s_S) quiet_cmd_as_o_S = AS $(quiet_modtag) $@ cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< -%.o: %.S FORCE +$(obj)/%.o: $(src)/%.S FORCE $(call if_changed_dep,as_o_S) targets += $(real-objs-y) $(real-objs-m) $(lib-y) @@ -245,7 +256,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $(always) quiet_cmd_cpp_lds_S = LDS $@ 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) # Build the compiled-in targets @@ -261,7 +272,8 @@ ifdef builtin-target quiet_cmd_link_o_target = LD $@ # If the list of objects to link is empty, just create an empty built-in.o cmd_link_o_target = $(if $(strip $(obj-y)),\ - $(LD) $(ld_flags) -r -o $@ $(filter $(obj-y), $^),\ + $(LD) $(ld_flags) -r -o $@ $(filter $(obj-y), $^) \ + $(cmd_secanalysis),\ rm -f $@; $(AR) rcs $@) $(builtin-target): $(obj-y) FORCE @@ -270,12 +282,25 @@ $(builtin-target): $(obj-y) FORCE targets += $(builtin-target) endif # builtin-target +# +# Rule to create modules.order file +# +# Create commands to either record .ko file or cat modules.order from +# a subdirectory +modorder-cmds = \ + $(foreach m, $(modorder), \ + $(if $(filter %/modules.order, $m), \ + cat $m;, echo kernel/$m;)) + +$(modorder-target): $(subdir-ym) FORCE + $(Q)(cat /dev/null; $(modorder-cmds)) > $@ + # # Rule to compile a set of .o files into one .a file # ifdef lib-target quiet_cmd_link_l_target = AR $@ -cmd_link_l_target = rm -f $@; $(AR) $(EXTRA_ARFLAGS) rcs $@ $(lib-y) +cmd_link_l_target = rm -f $@; $(AR) rcs $@ $(lib-y) $(lib-target): $(lib-y) FORCE $(call if_changed,link_l_target) @@ -296,10 +321,10 @@ $($(subst $(obj)/,,$(@:.o=-objs))) \ $($(subst $(obj)/,,$(@:.o=-y)))), $^) quiet_cmd_link_multi-y = LD $@ -cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) +cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secanalysis) quiet_cmd_link_multi-m = LD [M] $@ -cmd_link_multi-m = $(LD) $(ld_flags) $(LDFLAGS_MODULE) -o $@ $(link_multi_deps) +cmd_link_multi-m = $(cmd_link_multi-y) # We would rather have a list of rules like # foo.o: $(foo-objs)