Better patch. Thanks to Maxy for improvement hints!
diff --git a/debian/changelog b/debian/changelog
index 0bb6373..476924b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+libnova (0.16-2.1) UNRELEASED; urgency=medium
+
+ * Non-maintainer upload.
+ * Complete Multi-Arch (Closes: #873605).
+
+ --
+
libnova (0.16-2) unstable; urgency=medium
* Add new patch: Use-CFLAGS-from-environment.patch.
diff --git a/debian/control b/debian/control
index 8477fac..1f7e4b0 100644
--- a/debian/control
+++ b/debian/control
@@ -20,8 +20,10 @@ Description: celestial mechanics, astrometry and astrodynamics library
Package: libnova-dev
Architecture: any
+Multi-Arch: same
Section: libdevel
Depends: libnova-0.16-0 (= ${binary:Version}),
+ libnova-dev-bin (= ${binary:Version}),
${misc:Depends},
${shlibs:Depends}
Description: development files for libnova astronomical library
@@ -29,3 +31,17 @@ Description: development files for libnova astronomical library
Astrometry and Astrodynamics library.
.
This package contains the development files.
+
+Package: libnova-dev-bin
+Architecture: any
+Multi-Arch: foreign
+Section: libdevel
+Depends: ${misc:Depends},
+ ${shlibs:Depends}
+Breaks: libnova-dev (<< 0.16-2)
+Replaces: libnova-dev (<< 0.16-2)
+Description: development config tool for libnova astronomical library
+ libnova is a general purpose, double precision, Celestial Mechanics,
+ Astrometry and Astrodynamics library.
+ .
+ This package contains the libnovaconfig tool.
diff --git a/debian/libnova-dev-bin.install b/debian/libnova-dev-bin.install
new file mode 100644
index 0000000..e5d5508
--- /dev/null
+++ b/debian/libnova-dev-bin.install
@@ -0,0 +1 @@
+usr/bin/libnovaconfig
diff --git a/debian/libnova-dev.manpages b/debian/libnova-dev-bin.manpages
similarity index 100%
rename from debian/libnova-dev.manpages
rename to debian/libnova-dev-bin.manpages
diff --git a/debian/libnova-dev.install b/debian/libnova-dev.install
index 839cf32..53a73ec 100644
--- a/debian/libnova-dev.install
+++ b/debian/libnova-dev.install
@@ -1,4 +1,3 @@
-usr/bin/libnovaconfig
usr/include/libnova/aberration.h
usr/include/libnova/airmass.h
usr/include/libnova/angular_separation.h
