Python call makefile compiling and capture make's output
makefile, python, subprocess
Solution
You can check the return value of the make process by
make_process.poll()
This returns "None" if the process is still running, or the error code if it's finished. If you just want the output to end up on the console there is no need to do this manually The output goes to the console anyway, and can do it like this:
make_process = subprocess.Popen("make clean all", stderr=subprocess.STDOUT)
if make_process.wait() != 0:
something_went_wrong();
Problem
A job in Jenkins calls my python script, in which I want to call `make` to compile my UT codes, and raise `sys.exit(1)` if a compiling error like "make: *** [ ] Error 1" occurs. I also need to print output in real time. Here's my python script: ``` make_process = subprocess.Popen("make clean all;", shell=True, stdout=subprocess.PIPE, stderr=sys.stdout.fileno()) while True: line = make_process.stdout.readline() if not line:break print line, #output to console in time sys.stdout.flush() ``` But how do I capture the `make` error and let this python script fail? Note: - make_process.wait() is 0 when make error happens. - this answer doesn't work for me: Running shell command from Python and capturing the output Update: It turned out to be a makefile issue. See the comments on the accepted answer. But for this python question, pentadecagon gave the right answer.