公司其他同事大多做C#的，公司內部暫時也沒用提供自己的C++日志庫，由於項目較緊急，所以就准備選一個開源日志庫使用，由於以前做過java，用的Log4j比較強大，但是查了下，其使用起來有點復雜。所以就想到最偉大的公司google了，其Glog使用還是比較簡單的，源碼下下來直接用VS編譯生成lib和dll庫，源碼文件中都有現成的vs工程。
開源項目首頁：https://code.google.com/p/google-glog/
Glog項目路徑： https://code.google.com/p/google-glog/downloads/list
第一步，下載glog-0.3.3.tar.gz，解壓，直接打開google-glog.sln工程文件，如果vs版本不對，讓其自動轉換
第二步，編譯，在Debug下生成libglog.dll、 libglog.lib、libglog_static.lib
第三步，將頭文件和lib庫拷貝到自己的工程下，由於我暫時是window下使用，頭文件使用 \glog-0.3.3\src\windows\glog
第四步，引用到自己工程下，編譯發現報錯：
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
1> SessionMgr.cpp
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
1> SessionFactory.cpp
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
1> RealTimeStreamSession.cpp
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
1> main.cpp
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
1> GNumGenerator.cpp
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
1> DevicControlSession.cpp
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
1> CatalogSesssion.cpp
1>d:\workspace\video\videomanage\devicemgr\lib\glog\glog\log_severity.h(55): fatal error C1189: #error : ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
進入log_severity.h頭文件查看，是一個宏定義的地方出現了沖突：
#ifndef GLOG_NO_ABBREVIATED_SEVERITIES
# ifdef ERROR
# error ERROR macro is defined. Define GLOG_NO_ABBREVIATED_SEVERITIES before including logging.h. See the document for detail.
# endif
const int INFO = GLOG_INFO, WARNING = GLOG_WARNING,
ERROR = GLOG_ERROR, FATAL = GLOG_FATAL;
#endif
解決方法：
在工程加上預編譯宏GLOG_NO_ABBREVIATED_SEVERITIES
C/C++ --> 預處理器 --> 預處理器定義 --> 加上GLOG_NO_ABBREVIATED_SEVERITIES宏 保存，編譯通過~
第五步，自己的項目中使用
#include "glog/logging.h"
int _tmain(int argc, _TCHAR* argv[])
{
google::InitGoogleLogging((const char *)argv[0]); //參數為自己的可執行文件名
google::SetLogDestination(google::GLOG_INFO,"./myInfo");
LOG(INFO) << "This is a <Warn> log message..." << ;
.....................
}
搞定，後面就是將這些日志在工程中使用起來了。
