- PATH="${HOME}/local/bin:/usr/lib/ccache:${HOME}/bin:${PATH}"
- LD_LIBRARY_PATH="${HOME}/local/lib"
+ case "${PATH}" in
+ *:${HOME}/local/bin:*)
+ ;;
+ *)
+ PATH="/usr/lib/ccache:${HOME}/local/bin:${HOME}/bin:${PATH}"
+ LD_LIBRARY_PATH="${HOME}/local/lib"
+ ;;
+ esac