ENH: Turn off CPACK_BINARY_TBZ2 and CPACK_BINARY_ZIP by default. Strictly speaking, this changes behavior from cpack 2.6, but now that cpack returns a non-zero exit code when it encounters an error, and it is an error to try to use a generator that is not available... It makes sense to turn these off by default since not everybody has these generators installed. It is easy for a project to turn these options back on if they need to: simply set(CPACK_BINARY_TBZ2 ON) or set(CPACK_BINARY_ZIP ON) before include(CPack) in your CMakeLists.txt...

Modules/CPack.cmake

@@ -716,14 +716,14 @@ if(NOT CPACK_GENERATOR)
       endif(APPLE)
       option(CPACK_BINARY_STGZ "Enable to build STGZ packages"    ON)
       option(CPACK_BINARY_TGZ  "Enable to build TGZ packages"     ON)
-      option(CPACK_BINARY_TBZ2 "Enable to build TBZ2 packages"    ON)
+      option(CPACK_BINARY_TBZ2 "Enable to build TBZ2 packages"    OFF)
       option(CPACK_BINARY_DEB  "Enable to build Debian packages"  OFF)
       option(CPACK_BINARY_RPM  "Enable to build RPM packages"     OFF)
       option(CPACK_BINARY_NSIS "Enable to build NSIS packages"    OFF)
     endif(CYGWIN)
   else(UNIX)
     option(CPACK_BINARY_NSIS "Enable to build NSIS packages" ON)
-    option(CPACK_BINARY_ZIP  "Enable to build ZIP packages" ON)
+    option(CPACK_BINARY_ZIP  "Enable to build ZIP packages" OFF)
   endif(UNIX)
   
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_BUNDLE       Bundle)