linux-source: Install kernel config files for linux-image packages

The kernel config files used to be uploaded to
http://kernel.alioth.debian.org/config/ or elsewhere, and people
occasionally request them, but we have no infrastructure to
automatically do that and I rarely remember to do it.  These are
presumably wanted as a starting point by people building custom
packages who don't want to download the linux-image package, so
add them to the linux-source-$UPSTREAMVERSION package.

We can already generate all the config files without any
cross-toolchain using the 'setup' target in rules.gen, except that the
'make prepare' command in rules.real will fail.  This command is
unnecessary as 'prepare' is a dependency of any build target we use
in our 'build-arch' rule, so remove it.

svn path=/dists/sid/linux/; revision=20400

debian/bin/gencontrol.py

@@ -73,10 +73,22 @@ class Gencontrol(Base):
                          ['source_%s_real' % featureset])
             makefile.add('source', ['source_%s' % featureset])
 
+        triplet_enabled = []
+        for arch in iter(self.config['base', ]['arches']):
+            for featureset in self.config['base', arch].get('featuresets', ()):
+                if self.config.merge('base', None, featureset).get('enabled', True):
+                    for flavour in self.config['base', arch, featureset]['flavours']:
+                        triplet_enabled.append('%s_%s_%s' %
+                                               (arch, featureset, flavour))
+
         makeflags = makeflags.copy()
         makeflags['ALL_FEATURESETS'] = ' '.join(fs_enabled)
+        makeflags['ALL_TRIPLETS'] = ' '.join(triplet_enabled)
         super(Gencontrol, self).do_main_makefile(makefile, makeflags, extra)
 
+        # linux-source-$UPSTREAMVERSION will contain all kconfig files
+        makefile.add('binary-indep', deps=['setup'])
+
     def do_main_packages(self, packages, vars, makeflags, extra):
         packages.extend(self.process_packages(self.templates["control.main"], self.vars))
 

debian/changelog

@@ -13,6 +13,8 @@ linux (3.10.1-2) UNRELEASED; urgency=low
   * [armhf/armmp] Enable NET_CALXEDA_XGMAC as module (Closes: #717269)
   * linux-source: Switch compression of tarball and patch to xz.  Disable
     compression of package (but use gzip, to keep old tools happy).
+  * linux-source: Install kernel config files for linux-image packages in
+    /usr/src/linux-config-$UPSTREAMVERSION directory
 
  -- Arnaud Patard <arnaud.patard@rtp-net.org>  Tue, 16 Jul 2013 08:19:29 +0200
 

debian/rules.real

@@ -145,7 +145,6 @@ ifdef CFLAGS_KERNEL
 endif
 	+$(MAKE_CLEAN) -C '$(SOURCE_DIR)' O='$(CURDIR)/$(DIR)' V=1 listnewconfig
 	+yes "" | $(MAKE_CLEAN) -C '$(SOURCE_DIR)' O='$(CURDIR)/$(DIR)' oldconfig >/dev/null
-	+$(MAKE_CLEAN) -C '$(SOURCE_DIR)' O='$(CURDIR)/$(DIR)' prepare
 	@$(stamp)
 
 $(STAMPS_DIR)/build_$(ARCH)_$(FEATURESET)_$(FLAVOUR)_$(TYPE): DIR=$(BUILD_DIR)/build_$(ARCH)_$(FEATURESET)_$(FLAVOUR)
@@ -495,11 +494,16 @@ install-udeb_$(ARCH):
 	dh_gencontrol
 	dh_builddeb
 
-install-source: DH_OPTIONS = -plinux-source-$(VERSION)
+install-source: PACKAGE_NAME = linux-source-$(VERSION)
+install-source: DH_OPTIONS = -p$(PACKAGE_NAME)
 install-source: $(BUILD_DIR)/linux-source-$(UPSTREAMVERSION).tar.xz $(foreach FEATURESET,$(filter-out none,$(ALL_FEATURESETS)),$(BUILD_DIR)/linux-patch-$(UPSTREAMVERSION)-$(FEATURESET).patch.xz)
 	dh_testdir
 	dh_testroot
+	dh_installdirs /usr/src/linux-config-$(UPSTREAMVERSION)
 	dh_install '$^' /usr/src
+	for triplet in $(ALL_TRIPLETS); do \
+	  xz -c $(BUILD_DIR)/build_$$triplet/.config >debian/$(PACKAGE_NAME)/usr/src/linux-config-$(UPSTREAMVERSION)/config.$$triplet.xz; \
+	done
 # We don't want to recompress, but -Znone is not compatible with older
 # tools and is currently rejected by dak.  -Zgzip -z0 has almost the
 # same effect.