kconfig: Clear "written" flag to avoid data loss

[thirdparty/linux.git] / scripts / Makefile.build

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index be38198d98b24f31c277e58163b99b93f83d6eaa..0d434d0afc0bc81262afebdd069a1ccb30da9787 100644 (file)
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -63,14 +63,14 @@ ifneq ($(strip $(real-obj-y) $(need-builtin)),)
 builtin-target := $(obj)/built-in.a
 endif
 
-ifdef CONFIG_MODULES
+ifeq ($(CONFIG_MODULES)$(need-modorder),y1)
 modorder-target := $(obj)/modules.order
 endif
 
-# We keep a list of all modules in $(MODVERDIR)
+mod-targets := $(patsubst %.o, %.mod, $(obj-m))
 
 __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
-        $(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \
+        $(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
         $(subdir-ym) $(always)
        @:
 
@@ -87,11 +87,6 @@ ifneq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),)
   cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $<
 endif
 
-# Do section mismatch analysis for each module/built-in.a
-ifdef CONFIG_DEBUG_SECTION_MISMATCH
-  cmd_secanalysis = ; scripts/mod/modpost $@
-endif
-
 # Compile C sources (.c)
 # ---------------------------------------------------------------------------
 
@@ -268,7 +263,7 @@ endef
 
 # List module undefined symbols (or empty line if not enabled)
 ifdef CONFIG_TRIM_UNUSED_KSYMS
-cmd_undef_syms = $(NM) $@ | sed -n 's/^  *U //p' | xargs echo
+cmd_undef_syms = $(NM) $< | sed -n 's/^  *U //p' | xargs echo
 else
 cmd_undef_syms = echo
 endif
@@ -278,13 +273,15 @@ $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) 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)
+cmd_mod = { \
+       echo $(if $($*-objs)$($*-y)$($*-m), $(addprefix $(obj)/, $($*-objs) $($*-y) $($*-m)), $(@:.mod=.o)); \
+       $(cmd_undef_syms); \
+       } > $@
 
-$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
-       $(call cmd,force_checksrc)
-       $(call if_changed_rule,cc_o_c)
-       @{ echo $(@:.o=.ko); echo $@; \
-          $(cmd_undef_syms); } > $(MODVERDIR)/$(@F:.o=.mod)
+$(obj)/%.mod: $(obj)/%.o FORCE
+       $(call if_changed,mod)
+
+targets += $(mod-targets)
 
 quiet_cmd_cc_lst_c = MKLST   $@
       cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \
@@ -294,7 +291,7 @@ quiet_cmd_cc_lst_c = MKLST   $@
 $(obj)/%.lst: $(src)/%.c FORCE
        $(call if_changed_dep,cc_lst_c)
 
-# header test (header-test-y target)
+# header test (header-test-y, header-test-m target)
 # ---------------------------------------------------------------------------
 
 quiet_cmd_cc_s_h = CC      $@
@@ -423,13 +420,10 @@ endif # builtin-target
 #
 # 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)) > $@
+       $(Q){ $(foreach m, $(modorder), \
+       $(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
+       | $(AWK) '!x[$$0]++' - > $@
 
 #
 # Rule to compile a set of .o files into one .a file (with symbol table)
@@ -464,12 +458,10 @@ endif
 # module is turned into a multi object module, $^ will contain header file
 # dependencies recorded in the .*.cmd file.
 quiet_cmd_link_multi-m = LD [M]  $@
-cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(filter %.o,$^) $(cmd_secanalysis)
+      cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(filter %.o,$^)
 
 $(multi-used-m): FORCE
        $(call if_changed,link_multi-m)
-       @{ echo $(@:.o=.ko); echo $(filter %.o,$^); \
-          $(cmd_undef_syms); } > $(MODVERDIR)/$(@F:.o=.mod)
 $(call multi_depend, $(multi-used-m), .o, -objs -y -m)
 
 targets += $(multi-used-m)