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Avoiding "warning: jobserver unavailable: using -j1. Add `+' to parent make rule." in src:debian-installer?



Hi,

src:debian-installer has a few definitions in build/Makefile to
recurse once or many times depending on a few parameters. That
currently leads to some:
| make[1]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule.

Since I suspect we want that to be sequential anyway, I guess we could
specify -j1 on that rule explicitly (see attached patch), thoughts?

Mraw,
KiBi.
From bde88aec7b74d2d5683e503c607f47d576d998e8 Mon Sep 17 00:00:00 2001
From: Cyril Brulebois <kibi@debian.org>
Date: Thu, 6 Jun 2013 22:55:14 +0200
Subject: [PATCH] Specify -j1 for the submake definition.

That's what happens anyway, and warnings go away accordingly.
---
 build/Makefile   |    2 +-
 debian/changelog |    2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/build/Makefile b/build/Makefile
index 54a2fde..9e7833e 100644
--- a/build/Makefile
+++ b/build/Makefile
@@ -108,7 +108,7 @@ endif
 
 # Useful command sequences
 define submake
-  $(ROOTCMD) $(MAKE) --no-print-directory
+  $(ROOTCMD) $(MAKE) --no-print-directory -j1
 endef
 
 define recurse_once
diff --git a/debian/changelog b/debian/changelog
index 10ff1f8..53aceb5 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -18,6 +18,8 @@ debian-installer (2013XXXX) UNRELEASED; urgency=low
     - doc/i18n/languages.xsl
   * Bump linux kernel version from 3.2.0-4 to 3.9-1.
   * Set DEBIAN_VERSION to just '8'.
+  * Specify -j1 for the submake definition in build/Makefile; that's what
+    happens anyway, and warnings go away accordingly.
 
   [ Philipp Kern ]
   * s390(x): Remove the tape image flavour (no longer supported by
-- 
1.7.10.4

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