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[PATCH 9/9] kbuild: rpm-pkg: do not force -jN in submake

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  [PATCH 9/9] kbuild: rpm-pkg: do not force -jN in submake Masahiro Yamada <yamada.masahiro@socionext.com> - 2017-09-30 03:20 +0200

#1742435 — [PATCH 9/9] kbuild: rpm-pkg: do not force -jN in submake

The spec file always passes %{?_smp_mflags}, but we have two
problems here.

[1] "make -jN rpm-pkg" emits the following warning message:

    make[2]: warning: -jN forced in submake: disabling jobserver mode.

[2] We can not specify the number of jobs that run in parallel.
    Whether we give -jN or not from the top Makefile, the spec file
    always passes ${?_smp_mflags} to the build commands.

${?_smp_mflags} will be useful when we run rpmbuild by hand.  When we
invoke it from Makefile, -jN is propagated down to submake; it should
not be overridden because we want to respect the number of jobs given
by the user.  Set _smp_mflags to empty string in this case.

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

 scripts/package/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/package/Makefile b/scripts/package/Makefile
index 70eea1e..9ed96aef 100644
--- a/scripts/package/Makefile
+++ b/scripts/package/Makefile
@@ -50,7 +50,8 @@ rpm-pkg rpm: FORCE
 	$(MAKE) clean
 	$(CONFIG_SHELL) $(MKSPEC) >$(objtree)/kernel.spec
 	$(call cmd,src_tar,$(KERNELPATH),kernel.spec)
-	+rpmbuild $(RPMOPTS) --target $(UTS_MACHINE) -ta $(KERNELPATH).tar.gz
+	+rpmbuild $(RPMOPTS) --target $(UTS_MACHINE) -ta $(KERNELPATH).tar.gz \
+	--define='_smp_mflags %{nil}'
 
 # binrpm-pkg
 # ---------------------------------------------------------------------------
-- 
2.7.4

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