When Google Logging Library is called by Python, how can we define the location of the log file?

Question

I am now calling a C++ library in Python with the help of CFFI. This C++ library uses Google Logging Library for logging message. I know that when I set up a C++ application that calls the library, I can easily control where the log file is located:

 #include <glog/logging.h>

   int main(int argc, char* argv[]) {
     // Initialize Google's logging library.
     google::InitGoogleLogging(argv[0]);

     // ...
     LOG(INFO) << "Found " << num_cookies << " cookies";
   }

However, now I am calling it from the Python codes. Then my question is how can I set up the log file so that the log information in the C++ library can be written to the defined log file. By the way, I have the source code of the C++ library, and I can compile it myself.

Answer 1

According to the docs, setting environment variable GLOG_log_dir should work:

GLOG_log_dir='/my/log/dir/' python my_code.py

According to the code, setting environment variable GOOGLE_LOG_DIR may also work.