CMake: Add debian package target

Change-Id: I114c861e5537a010d622b31d0c335752b45f3d2e
Reviewed-on: https://code.wireshark.org/review/29360
Reviewed-by: Anders Broman <a.broman58@gmail.com>

CMakeLists.txt

@@ -2687,6 +2687,7 @@ endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
 	find_program(RPMBUILD_EXECUTABLE rpmbuild)
+	find_program(DPKG_BUILDPACKAGE_EXECUTABLE dpkg-buildpackage)
 	find_program(GIT_EXECUTABLE git)
 endif()
 
@@ -2779,6 +2780,13 @@ if(RPMBUILD_EXECUTABLE)
 	)
 endif()
 
+if(DPKG_BUILDPACKAGE_EXECUTABLE)
+	add_custom_target(deb-package
+		COMMAND ${DPKG_BUILDPACKAGE_EXECUTABLE} -us -uc
+		WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+	)
+endif()
+
 set(CLEAN_C_FILES
 	${dumpcap_FILES}
 	${wireshark_FILES}

Vagrantfile

@@ -18,6 +18,8 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   # Install and build the various things (including wireshark!)
   config.vm.define "ubuntu", autostart: false do |deb|
     deb.vm.box = "ubuntu/xenial64"
+    # XXX: Mounting to /vagrant (the default) won't work for building a
+    # Debian package.
 
     deb.vm.provision "shell" do |s|
       s.path = 'tools/debian-setup.sh'