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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-10-04 07:25:19 +0300 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-10-19 03:47:46 +0300 |
| commit | 69ea912fda74a673d330d23595385e5b73e3a2b9 (patch) | |
| tree | b1e7f945f216baa35fbeebdd6be72a602cd343cb | |
| parent | 9df3e7a7d7d6d92df7c58fb17f900fdc2d8b5031 (diff) | |
| download | linux-69ea912fda74a673d330d23595385e5b73e3a2b9.tar.xz | |
kbuild: remove unneeded link_multi_deps
Since commit c8589d1e9e01 ("kbuild: handle multi-objs dependency
appropriately"), $^ really represents all the prerequisite of the
composite object being built.
Hence, $(filter %.o,$^) contains all the objects to link together,
which is much simpler than link_multi_deps calculation.
Please note $(filter-out FORCE,$^) does not work here. When a single
object module is turned into a multi object module, $^ will contain
header files that were previously included for building the single
object, and recorded in the .*.cmd file. To filter out such headers,
$(filter %.o,$^) should be used here.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
| -rw-r--r-- | scripts/Makefile.build | 20 |
1 files changed, 2 insertions, 18 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build index cb0377427f94..f21b48d4a8f2 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -485,28 +485,12 @@ targets += $(obj)/lib-ksyms.o endif -# -# Rule to link composite objects -# -# Composite objects are specified in kbuild makefile as follows: -# <composite-object>-objs := <list of .o files> -# or -# <composite-object>-y := <list of .o files> -# or -# <composite-object>-m := <list of .o files> -# The -m syntax only works if <composite object> is a module -link_multi_deps = \ -$(filter $(addprefix $(obj)/, \ -$($(subst $(obj)/,,$(@:.o=-objs))) \ -$($(subst $(obj)/,,$(@:.o=-y))) \ -$($(subst $(obj)/,,$(@:.o=-m)))), $^) - quiet_cmd_link_multi-m = LD [M] $@ -cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secanalysis) +cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(filter %.o,$^) $(cmd_secanalysis) $(multi-used-m): FORCE $(call if_changed,link_multi-m) - @{ echo $(@:.o=.ko); echo $(link_multi_deps); \ + @{ echo $(@:.o=.ko); echo $(filter %.o,$^); \ $(cmd_undef_syms); } > $(MODVERDIR)/$(@F:.o=.mod) $(call multi_depend, $(multi-used-m), .o, -objs -y -m) |