[CMake] Problems with CPack 2.8.8

[NoRulez]

Hello,

i've upgraded my cmake installation from 2.8.7 to 2.8.8. After the upgrade the cpack has an unwanted behavior.

When i run cpack from the build directory (in cpack 2.8.7) then cpack iterates over all configured CPACK_GENERATORs and creates the installer/archives.
But with cpack 2.8.8 I get only the options from cpack.
Is this a bug or did I need to configure something else in 2.8.8?

cpack version 2.8.8
Usage

  cpack -G <generator> [options]

Options
  -G <generator>              = Use the specified generator to generate
                                package.
  -C <Configuration>          = Specify the project configuration
  -D <var>=<value>            = Set a CPack variable.
  --config <config file>      = Specify the config file.
  --verbose,-V                = enable verbose output
  --debug                     = enable debug output (for CPack developers)
  -P <package name>           = override/define CPACK_PACKAGE_NAME
  -R <package version>        = override/define CPACK_PACKAGE_VERSION
  -B <package directory>      = override/define CPACK_PACKAGE_DIRECTORY
  --vendor <vendor name>      = override/define CPACK_PACKAGE_VENDOR
  --help-command cmd [file]   = Print help for a single command and exit.
  --help-command-list [file]  = List available commands and exit.
  --help-commands [file]      = Print help for all commands and exit.
  --help-variable var [file]  = Print help for a single variable and exit.
  --help-variable-list [file] = List documented variables and exit.
  --help-variables [file]     = Print help for all variables and exit.
  --copyright [file]          = Print the CMake copyright and exit.
  --help,-help,-usage,-h,-H,/?= Print usage information and exit.
  --help-full [file]          = Print full help and exit.
  --help-html [file]          = Print full help in HTML format.
  --help-man [file]           = Print full help as a UNIX man page and exit.
  --version,-version,/V [file]= Show program name/version banner and exit.

Generators
  NSIS                        = Null Soft Installer
  STGZ                        = Self extracting Tar GZip compression
  TBZ2                        = Tar BZip2 compression
  TGZ                         = Tar GZip compression
  TZ                          = Tar Compress compression
  ZIP                         = ZIP file format

Best Regards
NoRulez
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