Warn if RISCV unset (#601)

.circleci/do-rtl-build.sh

@@ -53,15 +53,20 @@ else
 fi
 
 # enter the verilator directory and build the specific config on remote server
-run "make -C $REMOTE_SIM_DIR clean"
 run "export RISCV=\"$TOOLS_DIR\"; \
      export LD_LIBRARY_PATH=\"$LD_LIB_DIR\"; \
      export PATH=\"$REMOTE_VERILATOR_DIR/bin:\$PATH\"; \
      export VERILATOR_ROOT=\"$REMOTE_VERILATOR_DIR\"; \
      export COURSIER_CACHE=\"$REMOTE_WORK_DIR/.coursier-cache\"; \
+     make -C $REMOTE_SIM_DIR clean; \
      make -j$REMOTE_MAKE_NPROC -C $REMOTE_SIM_DIR JAVA_ARGS=\"$REMOTE_JAVA_ARGS\" ${mapping[$1]}"
 run "rm -rf $REMOTE_CHIPYARD_DIR/project"
 
+# copy back the final build
+
+
+run "rm -rf $REMOTE_CHIPYARD_DIR/project"
+
 # copy back the final build
 mkdir -p $LOCAL_CHIPYARD_DIR
 copy $SERVER:$REMOTE_CHIPYARD_DIR/ $LOCAL_CHIPYARD_DIR