Geant4Make is the Geant4 GNU Make toolchain formerly used to build the toolkit and applications. It is installed for backwards compatibility with the Geant4 Examples and your existing applications which use a GNUmakefile and the Geant4Make binmake.gmk file.

Geant4Make is configured by environment variables, so to use this toolchain to build applications you need to source the setup script CMAKE_INSTALL_PREFIX/share/Geant4-9.5.0/geant4make/geant4make.(c)sh as appropriate for your shell.

The usage of Geant4Make and syntax of the needed GNUMakefile is described in the FAQ and Appendices of the Geant4 User's Guide for Application Developers.

Please note that this toolchain is provided purely for conveniance and backwards compatibility. We encourage you to use, or migrate your applications to, the new CMake and geant4-config tools described below.

Geant4 provides a CMake module, Geant4Config.cmake, located in

      +- CMAKE_INSTALL_PREFIX
          +- lib/         
             +- Geant4-9.5.0/
                +- Geant4Config.cmake
    

for use by CMake's find_package command.

This allows you to use CMake to easily build your own Geant4 application, and can be used on all platforms transparently. To do this, your CMake script needs to call find_package

      find_package(Geant4)
    

and you need to point CMake to the location of the Geant4Config.cmake file via the CMake option Geant4_DIR.

The usage of CMake to build a Geant4 application using this module is described in more detail in the Appendices of the Geant4 User's Guide for Application Developers. We welcome feedback, suggestions for improvement and bug reports on Geant4Config.cmake.

On Unix platforms only, a simple config script is provided in

      +- CMAKE_INSTALL_PREFIX
          +- bin/         
             +- geant4-config
    

This script may be run and passed arguments to obtain the installation location of Geant4, the compile and link flags needed to build an application against Geant4, and the features the install of Geant4 provides. You can pass the --help argument to obtain the usage of the script:

      $ geant4-config --help
      Usage: geant4-config [OPTION...]
        --prefix                output installation prefix of Geant4
        --version               output version for Geant4
        --libs                  output all linker flags
        --cflags                output all preprocessor
                                and compiler flags

        --libs-without-gui      output linker flags without 
                                GUI components
        --cflags-without-gui    output preprocessor and compiler
                                flags without GUI components

        --has-feature FEATURE   output yes if FEATURE is supported,
                                or no if not supported

      Known Features:
       clhep[yes]
       expat[no]
       gdml[no]
       qt[no]
       motif[no]
       raytracer-x11[no]
       opengl-x11[no]
       openinventor[no]

      Help options:
        -?, --help              show this help message
        --usage                 display brief usage message
      

If you are on Unix and do not wish to use CMake to build applications, we recommend the use of geant4-config. We welcome feedback, suggestions for improvement and bug reports on geant4-config.