diff --git a/win/installer/BuildInstaller.cmake b/win/installer/BuildInstaller.cmake
new file mode 100644
index 0000000..dfb44e8
--- /dev/null
+++ b/win/installer/BuildInstaller.cmake
@@ -0,0 +1,39 @@
+# This file is included from the top-level CMakeLists.txt.  We just store it
+# here to avoid cluttering up that file.
+
+# Detect a 64-bit build and give that installer a different name
+if(CMAKE_SIZEOF_VOID_P MATCHES 8)
+  set(INST_NAME ${CMAKE_PROJECT_NAME}64-${VERSION})
+  set(INST_DEFS -DWIN64)
+else()
+  set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION})
+endif()
+
+if(MSVC_IDE)
+  set(INSTALLERDIR "$(OutDir)")
+  set(BUILDDIRDEF "-DBUILD_DIR=${INSTALLERDIR}\\")
+else()
+  set(INSTALLERDIR .)
+  set(BUILDDIRDEF "-DBUILD_DIR=")
+endif()
+
+set(INST_DEPS vncviewer)
+
+if(BUILD_WINVNC)
+  set(INST_DEFS ${INST_DEFS} -DBUILD_WINVNC)
+  set(INST_DEPS ${INST_DEPS} winvnc4 wm_hooks vncconfig)
+endif()
+
+if(GNUTLS_FOUND)
+  set(INST_DEFS ${INST_DEFS} -DHAVE_GNUTLS)
+endif()
+
+configure_file(win/installer/tigervnc.iss.in tigervnc.iss)
+
+add_custom_target(installer
+  iscc -o${INSTALLERDIR} ${INST_DEFS} ${BUILDDIRDEF} -F${INST_NAME} tigervnc.iss
+  DEPENDS ${INST_DEPS}
+  SOURCES tigervnc.iss)
+
+install(FILES ${CMAKE_SOURCE_DIR}/win/README_BINARY.txt
+  ${CMAKE_SOURCE_DIR}/LICENCE.txt DESTINATION .)