chore: add cmake support

Signed-off-by: Zixuan Liu <[email protected]>

Author: nodece

.gitignore

@@ -351,4 +351,7 @@ MigrationBackup/
 .ionide/
 
 .idea/
-*.iml
+*.iml
+
+# CMake work directory
+cmake-build/

README.md

@@ -119,13 +119,18 @@ https://casbin.org/docs/en/tutorials
 #### Unix
 - `Clone` the repository in your target client project
 - Change the current working directory to the `casbin-cpp` directory and build the library through following commands:
+    - ***Make***
     ```shell
-        $ make
-        $ make library
+    $ make
+    $ make library
+    ```
+    - ***CMake***
+    ```shell
+    $ make build
     ```
 - To get rid of intermediate files generated during building of library:
     ```shell
-        $ make clean
+    $ make clean
     ```
 - Now, you can use the file present in `lib` directory, created through `archiver`, as a static library
 

makefile

@@ -1,36 +1,37 @@
-#Define C/C++ compiler variables
+# Define C/C++ compiler variables
 CXX := g++
 AR := ar
 
-#Define compiler flags
+# Define compiler flags
 OBJ_FLAG := -c
-FILE_FLAG :=  -o
+FILE_FLAG := -o
 STD_FLAG := -std=c++11
 
-#Define archive flags
+# Define archive flags
 AR_FLAG := crv
 AR_NAME := casbin.a
 
-#Define directory variables
+# Define directory variables
 SRC_DIR := casbin
 OBJ_DIR := obj
 LIB_DIR := lib
 
-#Define extension variables
+# Define extension variables
 SRC_EXT := cpp
 OBJ_EXT := o
 LIB_EXT := a
 INC_EXT := h
 
-#Define make directory command variable
+# Define make directory command variable
 MKDIR_P := mkdir -p
 
-#Get source cpp files
+# Get source cpp files
 SRC_FILES := $(shell find $(SRC_DIR) -type f -name *.$(SRC_EXT))
 INC_DIRS := $(shell find $(SRC_DIR) -type d)
 INC_FLAG_DIRS := $(addprefix -I /, $(INC_DIRS))
 OBJ_DIRS := $(addprefix $(OBJ_DIR)/, $(INC_DIRS))
 
+.PHONY: object
 object:
 	$(foreach OBJ_DIR, $(OBJ_DIRS),\
 		$(MKDIR_P) $(OBJ_DIR);\
@@ -42,10 +43,18 @@ object:
 #Get object files
 OBJ_FILES := $(shell find $(OBJ_DIR) -type f -name *.$(OBJ_EXT))
 
+.PHONY: library
 library:
 	$(MKDIR_P) $(LIB_DIR)
 	$(AR) $(AR_FLAG) $(AR_NAME) $(OBJ_FILES)
 	mv $(AR_NAME) $(LIB_DIR)/$(AR_NAME)
 
+.PHONY: clean
 clean:
 	rm -r $(OBJ_DIR)
+
+.PHONY: build
+build:
+	rm -rf cmake-build
+	mkdir cmake-build
+	cd cmake-build ; cmake .. ; make