Use XDG base dirs for ccache

zshenv

@@ -20,6 +20,7 @@ PATH=$HOME/.local/bin:$PATH
 MANPATH=$HOME/.local/share/man:$MANPATH
 INFOPATH=$HOME/.local/share/info:$INFOPATH
 
+# Add ccache to the PATH and use XDG base dir paths
 if [ `uname` = Darwin ]; then
   [ -f /usr/local/bin/ccache ] && \
     PATH=/usr/local/opt/ccache/libexec:$PATH
@@ -30,6 +31,8 @@ elif [ -f /usr/bin/ccache ]; then
     PATH=/usr/lib/ccache:$PATH
   fi
 fi
+export CCACHE_CONFIGPATH=$HOME/.config/ccache
+export CCACHE_DIR=$HOME/.cache/ccache
 
 # Remove duplicates from environment variables
 typeset -U fpath