kbuild: comments cleanup in Makefile.lib
It has: 1. Move comments close to what it want to comment. 2. Comments cleanup & improvement. Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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@@ -4,8 +4,7 @@ ccflags-y += $(EXTRA_CFLAGS)
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cppflags-y += $(EXTRA_CPPFLAGS)
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cppflags-y += $(EXTRA_CPPFLAGS)
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ldflags-y += $(EXTRA_LDFLAGS)
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ldflags-y += $(EXTRA_LDFLAGS)
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#
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# flags that take effect in current and sub directories
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# flags that take effect in sub directories
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export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
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export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
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export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
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export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
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@@ -14,14 +13,16 @@ export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
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# When an object is listed to be built compiled-in and modular,
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# When an object is listed to be built compiled-in and modular,
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# only build the compiled-in version
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# only build the compiled-in version
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obj-m := $(filter-out $(obj-y),$(obj-m))
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obj-m := $(filter-out $(obj-y),$(obj-m))
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# Libraries are always collected in one lib file.
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# Libraries are always collected in one lib file.
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# Filter out objects already built-in
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# Filter out objects already built-in
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lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
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lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
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# Determine modorder.
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# Unfortunately, we don't have information about ordering between -y
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# and -m subdirs. Just put -y's first.
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modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
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# Handle objects in subdirs
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# Handle objects in subdirs
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# ---------------------------------------------------------------------------
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# ---------------------------------------------------------------------------
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@@ -29,12 +30,6 @@ lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
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# and add the directory to the list of dirs to descend into: $(subdir-y)
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# and add the directory to the list of dirs to descend into: $(subdir-y)
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# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
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# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
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# and add the directory to the list of dirs to descend into: $(subdir-m)
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# and add the directory to the list of dirs to descend into: $(subdir-m)
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# Determine modorder.
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# Unfortunately, we don't have information about ordering between -y
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# and -m subdirs. Just put -y's first.
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modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
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__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
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__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
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subdir-y += $(__subdir-y)
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subdir-y += $(__subdir-y)
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__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
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__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
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@@ -43,10 +38,9 @@ obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
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obj-m := $(filter-out %/, $(obj-m))
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obj-m := $(filter-out %/, $(obj-m))
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# Subdirectories we need to descend into
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# Subdirectories we need to descend into
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subdir-ym := $(sort $(subdir-y) $(subdir-m))
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subdir-ym := $(sort $(subdir-y) $(subdir-m))
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# if $(foo-objs) exists, foo.o is a composite object
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# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object
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multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
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multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
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multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
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multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
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multi-used := $(multi-used-y) $(multi-used-m)
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multi-used := $(multi-used-y) $(multi-used-m)
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@@ -90,8 +84,7 @@ subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
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obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
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obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
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# These flags are needed for modversions and compiling, so we define them here
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# These flags are needed for modversions and compiling, so we define them here
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# already
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# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
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# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
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# end up in (or would, if it gets compiled in)
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# end up in (or would, if it gets compiled in)
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# Note: Files that end up in two or more modules are compiled without the
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# Note: Files that end up in two or more modules are compiled without the
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# KBUILD_MODNAME definition. The reason is that any made-up name would
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# KBUILD_MODNAME definition. The reason is that any made-up name would
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