patch from rick68:

make certain uninstall works more than once.

toolchain/ccache/ccache.mk

@@ -84,18 +84,21 @@ ccache-clean:
 	rm -rf  $(STAGING_DIR)/bin/$(GNU_TARGET_NAME)-gcc
 	rm -rf  $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-cc
 	rm -rf  $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gcc
-	[ -f $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-gcc ] && \
-		mv $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-gcc $(STAGING_DIR)/bin/
-	(cd $(STAGING_DIR)/bin; \
-		ln -fs $(REAL_GNU_TARGET_NAME)-gcc $(REAL_GNU_TARGET_NAME)-cc; \
-		ln -fs $(REAL_GNU_TARGET_NAME)-gcc $(GNU_TARGET_NAME)-cc; \
-		ln -fs $(REAL_GNU_TARGET_NAME)-gcc $(GNU_TARGET_NAME)-gcc;)
-	[ -f $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-c++ ] && \
+	if [ -f $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-gcc ] ; then \
+		mv $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-gcc $(STAGING_DIR)/bin/; \
+		(cd $(STAGING_DIR)/bin; \
+		    ln -fs $(REAL_GNU_TARGET_NAME)-gcc $(REAL_GNU_TARGET_NAME)-cc; \
+		    ln -fs $(REAL_GNU_TARGET_NAME)-gcc $(GNU_TARGET_NAME)-cc; \
+		    ln -fs $(REAL_GNU_TARGET_NAME)-gcc $(GNU_TARGET_NAME)-gcc); \
+	fi;
+	if [ -f $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-c++ ] ; then \
 		rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-c++; \
-		mv $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-c++ $(STAGING_DIR)/bin/
-	[ -f $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-g++ ] && \
+		mv $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-c++ $(STAGING_DIR)/bin/; \
+	fi;
+	if [ -f $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-g++ ] ; then \
 		rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-g++; \
-		mv $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-g++  $(STAGING_DIR)/bin/
+		mv $(STAGING_DIR)/bin-ccache/$(REAL_GNU_TARGET_NAME)-g++  $(STAGING_DIR)/bin/; \
+	fi;
 	rm -rf  $(STAGING_DIR)/bin-ccache/*
 	(cd $(STAGING_DIR)/bin; \
 		ln -fs $(REAL_GNU_TARGET_NAME)-g++ $(GNU_TARGET_NAME)-c++; \