Install ROOT Files with CMake

When “make install” is called for the main project, some files from ROOT
(binaries, libraries, config files, .rootmap files, etc.) are copied to
the installation prefix given to CMake.

cmake/build-root-submodule.cmake

@@ -93,3 +93,12 @@ AddRootLibraryTarget(LIBNAME HistPainter DEPENDENCIES Gpad Graf Hist MathCore Ma
 AddRootLibraryTarget(LIBNAME Smatrix DEPENDENCIES Core MathCore)
 AddRootLibraryTarget(LIBNAME RooFitCore DEPENDENCIES Core Hist Graf Matrix Tree Minuit RIO MathCore Foam Smatrix)
 AddRootLibraryTarget(LIBNAME RooFit DEPENDENCIES Core RooFitCore Tree RIO Matrix MathCore)
+
+include(GNUInstallDirs)
+
+install(DIRECTORY "${PROJECT_BINARY_DIR}/root_install/bin/" TYPE BIN USE_SOURCE_PERMISSIONS)
+install(DIRECTORY "${PROJECT_BINARY_DIR}/root_install/lib/" TYPE LIB USE_SOURCE_PERMISSIONS)
+install(DIRECTORY "${PROJECT_BINARY_DIR}/root_install/etc/" TYPE SYSCONF USE_SOURCE_PERMISSIONS)
+install(DIRECTORY "${PROJECT_BINARY_DIR}/root_install/fonts/" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/fonts/truetype/")
+install(DIRECTORY "${PROJECT_BINARY_DIR}/root_install/man/" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/man/")
+install(FILES "${PROJECT_BINARY_DIR}/root_install/LICENSE" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/root/")