✨feat: 使用cmake编译，并支持自动版本号

tcpdump.c

@@ -44,7 +44,6 @@
 #define MESA_DUMP		(1) 
 #if MESA_DUMP
 #include "mesa_pkt_dump.h"
-const int tcpdump_mesa_version_VERSION_20181114 = 20181114;
 int tcpdump_data_offset = 0; /* 用于跳过某些底层数据, 如vxlan, 可以直接获取或设置过滤条件看vxlan的内层数据包内容 */
 unsigned char tcpdump_thread_index_array[64]; /* 开启捕包线程id数组, 靠长度决定id数量, 每个占1字节, 命令行输入支持逗号分隔 */
 int tcpdump_thread_index_array_num = 0;
@@ -151,6 +150,12 @@ The Regents of the University of California.  All rights reserved.\n";
 
 #include "print.h"
 
+#ifdef GIT_VERSION
+const char *tcpdump_mesa_version = (const char *)GIT_VERSION;
+#else
+const char *tcpdump_mesa_version = "GIT_VERSION_UNKNOWN";
+#endif
+
 #ifndef PATH_MAX
 #define PATH_MAX 1024
 #endif
@@ -3223,7 +3228,7 @@ print_usage(void)
 	(void)fprintf(stderr,
 "----------------------------------------------------------------------------------------------.\n");
 	(void)fprintf(stderr,
-"\t\tThe follow args is customized for tcpdump_mesa(%d):\n", tcpdump_mesa_version_VERSION_20181114);
+"\t\tThe follow args is customized for tcpdump_mesa(%s):\n", tcpdump_mesa_version);
 	(void)fprintf(stderr,
 "\t\t[ -a ] enable perceptive mode, can detect loss packet number.\n");
 	(void)fprintf(stderr,