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Subject[PATCH] kbuild: add comment about grouped target
Date
GNU Make commit 8c888d95f618 ("[SV 8297] Implement "grouped targets"
for explicit rules.") added the '&:' syntax.

I think '&:' is a perfect fit here, but we cannot use it any time
soon. Just add a TODO comment.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

Makefile | 1 +
1 file changed, 1 insertion(+)

diff --git a/Makefile b/Makefile
index 593d8f1bbe90..4fd51f045440 100644
--- a/Makefile
+++ b/Makefile
@@ -674,6 +674,7 @@ $(KCONFIG_CONFIG):
#
# This exploits the 'multi-target pattern rule' trick.
# The syncconfig should be executed only once to make all the targets.
+# (Note: use the grouped target '&:' when we bump to GNU Make 4.3)
%/auto.conf %/auto.conf.cmd: $(KCONFIG_CONFIG)
$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
else # !may-sync-config
--
2.17.1
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