# CPack NSIS Generator

CPack Nullsoft Scriptable Install System (NSIS) generator specific options.

Changed in version 3.22: The NSIS generator requires NSIS 3.03 or newer.

## Variables specific to CPack NSIS generator

The following variables are specific to the graphical installers built on Windows Nullsoft Scriptable Install System.

CPACK_NSIS_INSTALL_ROOT

  The default installation directory presented to the end user by the NSIS installer is under this root dir. The full directory presented to the end user is: `${CPACK_NSIS_INSTALL_ROOT}/${CPACK_PACKAGE_INSTALL_DIRECTORY}`

CPACK_NSIS_MUI_ICON

  An icon filename. The name of a `*.ico` file used as the main icon for the generated install program.

CPACK_NSIS_MUI_UNIICON

  An icon filename. The name of a `*.ico` file used as the main icon for the generated uninstall program.

CPACK_NSIS_INSTALLER_MUI_ICON_CODE

  undocumented.

CPACK_NSIS_MUI_WELCOMEFINISHPAGE_BITMAP

  Added in version 3.5.

  The filename of a bitmap to use as the NSIS `MUI_WELCOMEFINISHPAGE_BITMAP`.

CPACK_NSIS_MUI_UNWELCOMEFINISHPAGE_BITMAP

  Added in version 3.5.

  The filename of a bitmap to use as the NSIS `MUI_UNWELCOMEFINISHPAGE_BITMAP`.

CPACK_NSIS_EXTRA_PREINSTALL_COMMANDS

  Extra NSIS commands that will be added to the beginning of the install Section, before your install tree is available on the target system.

CPACK_NSIS_EXTRA_INSTALL_COMMANDS

  Extra NSIS commands that will be added to the end of the install Section, after your install tree is available on the target system.

CPACK_NSIS_EXTRA_UNINSTALL_COMMANDS

  Extra NSIS commands that will be added to the uninstall Section, before your install tree is removed from the target system.

CPACK_NSIS_COMPRESSOR

  The arguments that will be passed to the NSIS `SetCompressor` command.

CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL

  Ask about uninstalling previous versions first. If this is set to `ON`, then an installer will look for previous installed versions and if one is found, ask the user whether to uninstall it before proceeding with the install.

CPACK_NSIS_MODIFY_PATH

  Modify `PATH` toggle. If this is set to `ON`, then an extra page will appear in the installer that will allow the user to choose whether the program directory should be added to the system `PATH` variable.

CPACK_NSIS_DISPLAY_NAME

  The display name string that appears in the Windows Apps & features in Control Panel

CPACK_NSIS_PACKAGE_NAME

  The title displayed at the top of the installer.

CPACK_NSIS_INSTALLED_ICON_NAME

  A path to the executable that contains the installer icon.

CPACK_NSIS_HELP_LINK

  URL to a web site providing assistance in installing your application.

CPACK_NSIS_URL_INFO_ABOUT

  URL to a web site providing more information about your application.

CPACK_NSIS_CONTACT

  Contact information for questions and comments about the installation process.

CPACK_NSIS_<compName>_INSTALL_DIRECTORY

  Added in version 3.7.

  Custom install directory for the specified component `<compName>` instead of `$INSTDIR`.

CPACK_NSIS_CREATE_ICONS_EXTRA

  Additional NSIS commands for creating Start Menu shortcuts.

CPACK_NSIS_DELETE_ICONS_EXTRA

  Additional NSIS commands to uninstall Start Menu shortcuts.

CPACK_NSIS_EXECUTABLES_DIRECTORY

  Creating NSIS Start Menu links assumes that they are in `bin` unless this variable is set. For example, you would set this to `exec` if your executables are in an exec directory.

CPACK_NSIS_MUI_FINISHPAGE_RUN

  Specify an executable to add an option to run on the finish page of the NSIS installer.

CPACK_NSIS_MENU_LINKS

  Specify links in `[application]` menu. This should contain a list of pair `link` `link name`. The link may be a URL or a path relative to installation prefix. Like:

      set(CPACK_NSIS_MENU_LINKS
        "doc/cmake-@CMake_VERSION_MAJOR@.@CMake_VERSION_MINOR@/cmake.html"
        "CMake Help" "https://cmake.org" "CMake Web Site")

CPACK_NSIS_UNINSTALL_NAME

  Added in version 3.17.

  Specify the name of the program to uninstall the version. Default is `Uninstall`.

CPACK_NSIS_WELCOME_TITLE

  Added in version 3.17.

  The title to display on the top of the page for the welcome page.

CPACK_NSIS_WELCOME_TITLE_3LINES

  Added in version 3.17.

  Display the title in the welcome page on 3 lines instead of 2.

CPACK_NSIS_FINISH_TITLE

  Added in version 3.17.

  The title to display on the top of the page for the finish page.

CPACK_NSIS_FINISH_TITLE_3LINES

  Added in version 3.17.

  Display the title in the finish page on 3 lines instead of 2.

CPACK_NSIS_MUI_HEADERIMAGE

  Added in version 3.17.

  The image to display on the header of installers pages.

CPACK_NSIS_MANIFEST_DPI_AWARE

  Added in version 3.18.

  If set, declares that the installer is DPI-aware.

CPACK_NSIS_BRANDING_TEXT

  Added in version 3.20.

  If set, updates the text at the bottom of the install window. To set the string to blank, use a space (" ").

CPACK_NSIS_BRANDING_TEXT_TRIM_POSITION

  Added in version 3.20.

  If set, trim down the size of the control to the size of the branding text string. Allowed values for this variable are `LEFT`, `CENTER` or `RIGHT`. If not specified, the default behavior is `LEFT`.

CPACK_NSIS_EXECUTABLE

  Added in version 3.21.

  If set, specify the name of the NSIS executable. Default is `makensis`.

CPACK_NSIS_IGNORE_LICENSE_PAGE

  Added in version 3.22.

  If set, do not display the page containing the license during installation.

CPACK_NSIS_EXECUTABLE_PRE_ARGUMENTS

  Added in version 3.25.

  This variable is a semicolon-separated list of arguments to prepend to the nsis script to run. If the arguments do not start with a `/` or a `-`, it will add one automatically to the corresponding arguments. The command that will be run is:

      makensis.exe <preArgs>... "nsisFileName.nsi" <postArgs>...

  where `<preArgs>...` is constructed from `CPACK_NSIS_EXECUTABLE_PRE_ARGUMENTS` and `<postArgs>...` is constructed from `CPACK_NSIS_EXECUTABLE_POST_ARGUMENTS`.

CPACK_NSIS_EXECUTABLE_POST_ARGUMENTS

  Added in version 3.25.

  This variable is a semicolon-separated list of arguments to append to the nsis script to run. If the arguments do not start with a `/` or a `-`, it will add one automatically to the corresponding arguments. The command that will be run is:

      makensis.exe <preArgs>... "nsisFileName.nsi" <postArgs>...

  where `<preArgs>...` is constructed from `CPACK_NSIS_EXECUTABLE_PRE_ARGUMENTS` and `<postArgs>...` is constructed from `CPACK_NSIS_EXECUTABLE_POST_ARGUMENTS`.

CPACK_NSIS_CRC_CHECK

  Added in version 4.2.

  Specifies whether or not the installer will perform a CRC on itself before allowing an install. Allowed values for this variable are `on`, `off`, and `force`. If not specified, the default behavior is `on`.