Add build profile and config/defines for disabling linux-source

Add a new "pkg.linux.nosource" to let users disable building the
linux-source-* package, and allow to set "source: false" to modify
the default behaviour when no rofile is used.
When doing development builds this can save up to 15 minutes of build
time, especially on IO-strapped build workers.

debian/bin/gencontrol.py

@@ -48,6 +48,7 @@ class Gencontrol(Base):
             'libc-dev': config.SchemaItemBoolean(),
             'tools-unversioned': config.SchemaItemBoolean(),
             'tools-versioned': config.SchemaItemBoolean(),
+            'source': config.SchemaItemBoolean(),
         }
     }
 
@@ -111,6 +112,8 @@ class Gencontrol(Base):
         makeflags['ALL_TRIPLETS'] = ' '.join(triplet_enabled)
         if not self.config.merge('packages').get('docs', True):
             makeflags['DO_DOCS'] = False
+        if not self.config.merge('packages').get('source', True):
+            makeflags['DO_SOURCE'] = False
         super(Gencontrol, self).do_main_makefile(makefile, makeflags, extra)
 
         # linux-source-$UPSTREAMVERSION will contain all kconfig files

debian/changelog

@@ -3,6 +3,9 @@ linux (4.17~rc3-1~exp2) UNRELEASED; urgency=medium
   [ Luca Boccassi ]
   * Disable building linux-doc-* and tools documentation when the "nodoc"
     build profile is used.
+  * Add new "pkg.linux.nosource" build profile that disables building the
+    linux-source-* package, and a "[packages] source" option for the
+    debian/config/defines file that defines the default behaviour.
 
   [ John Paul Adrian Glaubitz ]
   * [m68k] Enable CONFIG_PATA_GAYLE as module.

debian/rules.real

@@ -71,7 +71,11 @@ ifneq ($(DO_DOCS),False)
     build-indep: $(STAMPS_DIR)/build-doc
   endif
 endif
-binary-indep: install-source
+ifeq (,$(filter pkg.linux.nosource,$(DEB_BUILD_PROFILES)))
+  ifneq ($(DO_SOURCE),False)
+    binary-indep: install-source
+  endif
+endif
 binary-indep: install-support
 
 ifneq ($(DO_TOOLS_VERSIONED),False)

debian/templates/control.main.in

@@ -1,5 +1,5 @@
 Package: @source_basename@-source-@version@
-Build-Profiles: <!stage1>
+Build-Profiles: <!stage1 !pkg.linux.nosource>
 Architecture: all
 Section: kernel
 Depends: binutils, xz-utils, ${misc:Depends}