Added files from the example:
http://simmesimme.github.io/lessons/2011/11/02/ppa-launchpad-cmake/
after slight change in order to make launchpad compile gr-gsm.
diff --git a/debian/rules b/debian/rules
new file mode 100755
index 0000000..6b44c5b
--- /dev/null
+++ b/debian/rules
@@ -0,0 +1,27 @@
+#!/usr/bin/make -f
+
+BUILDDIR = build
+
+# secondly called by launchpad
+build:
+ mkdir $(BUILDDIR);
+ cd $(BUILDDIR); cmake -DCMAKE_INSTALL_PREFIX=../debian/tmp/usr ..
+ make -C $(BUILDDIR)
+
+# thirdly called by launchpad
+binary: binary-indep binary-arch
+
+binary-indep:
+ # nothing to be done
+
+binary-arch:
+ cd $(BUILDDIR); cmake -P cmake_install.cmake
+ mkdir debian/tmp/DEBIAN
+ dpkg-gencontrol -pgr-gsm
+ dpkg --build debian/tmp ..
+
+# firstly called by launchpad
+clean:
+ rm -rf $(BUILDDIR)
+
+.PHONY: binary binary-arch binary-indep clean