fix: Makefile detect OS error.

src/Makefile

 #CC:=gcc
-VERSION:=1.6.6
+VERSION:=1.6.7
+
 CFLAGS+= -Wall -fPIC -DDEBUG -DVERSION=\"$(VERSION)\"
 
 objects= config.o auth.o
 
-all: gdut-drcom 
-	@echo gdut-drcom
+# detect OS
+ifeq ($(OS), Windows_NT)
+# windows
+LIBS+= -lws2_32
+CFLAGS+= -DWIN32
+#CFLAGS+=-m32
+DLLNAME=gdut-drcom.dll.$(VERSION)
+RM=del
+else
+# unix like
+DLLNAME=gdut-drcom.so.$(VERSION)
+RM=rm -f
+endif
 
+# crypto lib
 ifeq ($(cryptlib), polarssl)
 CFLAGS+=-D__WITH_POLARSSL__
-LIBS:=-lpolarssl
+LIBS+=-lpolarssl
 else ifeq ($(cryptlib), gcrypt)
 CFLAGS+=-D__WITH_GCRYPT__
-LIBS:=-lgcrypt
+LIBS+=-lgcrypt
 else ifeq ($(cryptlib), openssl)
 CFLAGS+=-D__WITH_OPENSSL__
-LIBS:=-lcrypto
+LIBS+=-lcrypto
 else
+# default
 objects+= md5.o md4.o sha1.o
 endif
 
-ifeq ($(LANG),)
-LIBS+= -lws2_32
-#CFLAGS+=-m32
-DLLNAME=gdut-drcom.dll.$(VERSION)
-else
-DLLNAME=gdut-drcom.so.$(VERSION)
-endif
+all: gdut-drcom 
+	@echo gdut-drcom
 
 gdut-drcom: $(objects) gdut-drcom.o
 	$(CC) *.o -o gdut-drcom $(CFLAGS) $(LIBS)
 
 dll: $(objects)
+	@echo gdut-drcom shared library
 	$(CC) -shared $(objects) -o $(DLLNAME) $(CFLAGS) $(LIBS)
 
 gdut-drcom.o: gdut-drcom.c
@@ -47,8 +57,4 @@ md5.o md4.o sha1.o:
 
 .PHONY : clean
 clean:
-ifeq ($(LANG),)
-	del gdut-drcom.exe *.o *.dll.$(VERSION)
-else
-	$(RM) gdut-drcom *.o *.so.$(VERSION)
-endif
+	$(RM) gdut-drcom $(DLLNAME) *.o 

src/auth.c

@@ -324,6 +324,7 @@ HEART_BEAT_START:
 int exit_auth(void)
 {
     fprintf(drcom_config.log_file, "gdut-drcom heart-beat exiting!\r\n");
+    fclose(drcom_config.log_file);
     drcom_config.exit = 1;
     return 0;
 }

src/gdut-drcom.c

@@ -119,5 +119,6 @@ static void print_help(char *name)
     fprintf(stdout, "    [-c, --config-file <file>]          The path to config file.\n");
     fprintf(stdout, "    [-l, --log-file <file>]             The path to log file, default as stdout.\n");
     fprintf(stdout, "    [-h, --help]                        Print this message.\n");
+    fprintf(stdout, "    [-v, --version]                     Print version infomatuon..\n");
 }