为降低变化成本，在根目录增加Makefile。

Makefile

@@ -0,0 +1,41 @@
+BUILD_DIR = $(CURDIR)/build
+LOCAL_DIR = $(CURDIR)
+DEBUG_FLAGS = -DCMAKE_BUILD_TYPE=Debug
+REL_FLAGS = -DCMAKE_BUILD_TYPE=RelWithDebInfo
+
+ifneq ($(INSTALL_PREFIX),)
+DEBUG_FLAGS += -DCMAKE_INSTALL_PREFIX=$(INSTALL_PREFIX)
+REL_FLAGS += -DCMAKE_INSTALL_PREFIX=$(INSTALL_PREFIX)
+endif
+
+all: _make_build_dir _compile_rel
+
+PHONY: all _make_build_dir _compile_debug _compile_rel _install \
+	   build_release build_debug install
+
+_make_build_dir:
+	mkdir -p $(BUILD_DIR)
+
+_compile_debug:
+	cd $(BUILD_DIR) && cmake $(LOCAL_DIR) $(DEBUG_FLAGS) && make
+
+_compile_rel:
+	cd $(BUILD_DIR) && cmake $(LOCAL_DIR) $(REL_FLAGS) && make
+
+_install:
+	cd $(BUILD_DIR) && make install
+_package:
+	cd $(BUILD_DIR) && make package
+_clean:
+	rm -rf $(BUILD_DIR)
+	
+# Release Version, No Debug Symbol and Optimized with -O2
+release: _make_build_dir _compile_rel
+# Debug Version, Optimized with -O0
+debug: _make_build_dir _compile_debug
+# Install
+install: _install
+# Package
+package: _package
+# Clean
+clean: _clean