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From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: linux-kbuild@vger.kernel.org
Cc: Jani Nikula <jani.nikula@intel.com>,
	intel-gfx@lists.freedesktop.org, Sam Ravnborg <sam@ravnborg.org>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Michal Marek <michal.lkml@markovi.net>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/5] kbuild: treat an object as multi-used when $(foo-) is set
Date: Tue,  6 Aug 2019 15:39:19 +0900	[thread overview]
Message-ID: <20190806063923.1266-2-yamada.masahiro@socionext.com> (raw)
In-Reply-To: <20190806063923.1266-1-yamada.masahiro@socionext.com>

Currently, Kbuild treats an object as multi-used when any of
$(foo-objs), $(foo-y), $(foo-m) is set. It makes more sense to
check $(foo-) as well.

In the context of foo-$(CONFIG_FOO_FEATURE1), CONFIG_FOO_FEATURE1
could be unset.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

 scripts/Makefile.lib | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 41c50f9461e5..0a540599823e 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -41,9 +41,9 @@ obj-m		:= $(filter-out %/, $(obj-m))
 # Subdirectories we need to descend into
 subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
 
-# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object
-multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
-multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
+# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
+multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
+multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
 multi-used   := $(multi-used-y) $(multi-used-m)
 
 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
@@ -52,8 +52,8 @@ subdir-obj-y := $(filter %/built-in.a, $(obj-y))
 
 # Replace multi-part objects by their individual parts,
 # including built-in.a from subdirectories
-real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
-real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
+real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
+real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
 
 # DTB
 # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
-- 
2.17.1


  reply	other threads:[~2019-08-06  6:40 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-06  6:39 [PATCH 0/5] kbuild: allow big modules to sub-divide Makefiles Masahiro Yamada
2019-08-06  6:39 ` Masahiro Yamada [this message]
2019-08-19 14:53   ` [PATCH 1/5] kbuild: treat an object as multi-used when $(foo-) is set Masahiro Yamada
2019-08-06  6:39 ` [PATCH 2/5] kbuild: clean up modname calculation Masahiro Yamada
2019-08-06  6:39 ` [PATCH 3/5] kbuild: rename cmd_ar_builtin to cmd_ar_no_sym Masahiro Yamada
2019-08-06  6:39 ` [PATCH 4/5] kbuild: support composite objects spanning across multiple Makefiles Masahiro Yamada
2019-08-06  6:39 ` [PATCH 5/5] drm: i915: hierachize Makefiles Masahiro Yamada
2019-08-10  6:46 ` [PATCH 0/5] kbuild: allow big modules to sub-divide Makefiles Sam Ravnborg
2019-08-10  6:46   ` Sam Ravnborg

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