configure a setup script in the install directory

CMakeLists.txt

@@ -46,6 +46,8 @@ endif()
 
 message(STATUS ${CMAKE_OSX_SYSROOT})
 
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/setup.sh.in ${CMAKE_INSTALL_PREFIX}/setup.sh @ONLY)
+
 # Determine current platform as minimum from SYSROOT
 if(APPLE)
   execute_process(COMMAND jq -r .MinimalDisplayName ${CMAKE_OSX_SYSROOT}/SDKSettings.json

setup.sh.in

@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+set -u
+
+function add_dep() {
+  pkg=$1
+  ver=$2
+  export CMAKE_PREFIX_PATH="@CMAKE_INSTALL_PREFIX@/$pkg/$ver:$CMAKE_PREFIX_PATH"
+}
+
+add_dep python @PYTHON_VERSION@
+add_dep tbb @TBB_VERSION@
+add_dep geant4 @GEANT4_VERSION@
+add_dep hepmc3 @HEPMC3_VERSION@
+add_dep pythia8 @PYTHIA8_VERSION@
+add_dep nlohmann_json @JSON_VERSION@
+add_dep root @ROOT_VERSION@
+add_dep podio @PODIO_VERSION@
+add_dep edm4hep @EDM4HEP_VERSION@
+add_dep dd4hep @DD4HEP_VERSION@
+add_dep boost @BOOST_VERSION@
+add_dep eigen @EIGEN_VERSION@