Makefile: add 'clean_crystal' target (#4268)

It is useful in compiler development cycle. $ vim src/... # edit compiler sources (but incomplete) $ make crystal # oops! maked incompilable compiler... $ make crystal # failed because compiler does not work At such time I don't want to use `make clean` because it removes `libcrystal` and `llvmext` also. I don't want to build C++ files again, so I added `clean-crystal` target in Makefile. It removes the files built by `crystal` command. Now, we can use `make clean_crystal crystal` to recompile `crystal` after removing compiler itself.
crystal-lang · Jun 2, 2017 · cc16950 · cc16950
1 parent 2c8fead
commit cc16950
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/Makefile b/Makefile
@@ -123,8 +123,11 @@ $(LIB_CRYSTAL_TARGET): $(LIB_CRYSTAL_OBJS)
 	$(AR) -rcs $@ $^
 
 .PHONY: clean
-clean: ## Clean up built directories and files
-	rm -rf $(O)
-	rm -rf ./doc
+clean: clean_crystal ## Clean up built directories and files
 	rm -rf $(LLVM_EXT_OBJ)
 	rm -rf $(LIB_CRYSTAL_OBJS) $(LIB_CRYSTAL_TARGET)
+
+.PHONY: clean_crystal
+clean_crystal: ## Clean up crystal built files
+	rm -rf $(O)
+	rm -rf ./doc