diff -Nru libsigc++-2.0-2.2.10/debian/changelog libsigc++-2.0-2.2.10/debian/changelog
--- libsigc++-2.0-2.2.10/debian/changelog	2011-08-24 08:47:30.000000000 -0700
+++ libsigc++-2.0-2.2.10/debian/changelog	2011-12-01 10:32:40.000000000 -0800
@@ -1,3 +1,12 @@
+libsigc++-2.0 (2.2.10-0ubuntu2) precise; urgency=low
+
+  * Convert to multiarch:
+    - Pass --libdir with multiarch path to configure
+    - Adjust .install files to refer to /usr/lib subdirs
+    - Add multiarch Pre-Depends
+
+ -- Evan Broder <evan@ebroder.net>  Tue, 29 Nov 2011 14:57:05 -0800
+
 libsigc++-2.0 (2.2.10-0ubuntu1) oneiric; urgency=low
 
   * New upstream version
diff -Nru libsigc++-2.0-2.2.10/debian/control libsigc++-2.0-2.2.10/debian/control
--- libsigc++-2.0-2.2.10/debian/control	2011-08-24 08:47:30.000000000 -0700
+++ libsigc++-2.0-2.2.10/debian/control	2011-12-04 12:48:42.000000000 -0800
@@ -11,10 +11,12 @@
 
 Package: libsigc++-2.0-0c2a
 Section: libs
+Pre-Depends: multiarch-support
 Depends: ${misc:Depends}, ${shlibs:Depends}
 Conflicts: libsigc++-1.9-0, libsigc++-2.0-0, libsigc++-2.0-0c2
 Replaces: libsigc++-1.9-0, libsigc++-2.0-0, libsigc++-2.0-0c2
 Architecture: any
+Multi-Arch: same
 Description: type-safe Signal Framework for C++ - runtime
  This library implements a full callback system for use in widget
  libraries, abstract interfaces, and general programming. It provides
@@ -27,10 +29,12 @@
 
 Package: libsigc++-2.0-dev
 Section: libdevel
+Pre-Depends: multiarch-support
 Conflicts: libsigc++-1.9-dev
 Replaces: libsigc++-1.9-dev
 Depends: libsigc++-2.0-${Soname} (= ${binary:Version}), pkg-config, ${misc:Depends}
 Suggests: libsigc++-2.0-doc
+Multi-Arch: same
 Architecture: any
 Description: type-safe Signal Framework for C++ - development files
  This library implements a full callback system for use in widget
diff -Nru libsigc++-2.0-2.2.10/debian/libsigc++-2.0-dev.install libsigc++-2.0-2.2.10/debian/libsigc++-2.0-dev.install
--- libsigc++-2.0-2.2.10/debian/libsigc++-2.0-dev.install	2011-08-24 08:47:30.000000000 -0700
+++ libsigc++-2.0-2.2.10/debian/libsigc++-2.0-dev.install	2011-11-29 15:02:02.000000000 -0800
@@ -1,6 +1,6 @@
 usr/include
-usr/lib/*.a
-usr/lib/*.la
-usr/lib/*.so
-usr/lib/pkgconfig
-usr/lib/sigc++-2.0
+usr/lib/*/*.a
+usr/lib/*/*.la
+usr/lib/*/*.so
+usr/lib/*/pkgconfig
+usr/lib/*/sigc++-2.0
diff -Nru libsigc++-2.0-2.2.10/debian/libsigc++-2.0.soname.install libsigc++-2.0-2.2.10/debian/libsigc++-2.0.soname.install
--- libsigc++-2.0-2.2.10/debian/libsigc++-2.0.soname.install	2011-08-24 08:47:30.000000000 -0700
+++ libsigc++-2.0-2.2.10/debian/libsigc++-2.0.soname.install	2011-11-29 14:56:37.000000000 -0800
@@ -1 +1 @@
-usr/lib/*.so.*
+usr/lib/*/*.so.*
diff -Nru libsigc++-2.0-2.2.10/debian/rules libsigc++-2.0-2.2.10/debian/rules
--- libsigc++-2.0-2.2.10/debian/rules	2011-08-24 08:47:30.000000000 -0700
+++ libsigc++-2.0-2.2.10/debian/rules	2011-11-29 15:23:18.000000000 -0800
@@ -18,6 +18,7 @@
 else
 CROSS= --build $(DEB_BUILD_GNU_TYPE)
 endif
+DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
 
 # Which automake version to use.
 AUTOMAKE_VERSION=1.10
@@ -100,7 +101,7 @@
 
 	ACLOCAL=$(ACLOCAL) AUTOMAKE=$(AUTOMAKE) autoreconf
 	test -d builddir || mkdir builddir
-	cd builddir && ../configure --prefix=/usr --enable-shared --enable-static $(CROSS)
+	cd builddir && ../configure --prefix=/usr --libdir=\$${prefix}/lib/$(DEB_HOST_MULTIARCH) --enable-shared --enable-static $(CROSS)
 
 	touch config-stamp