check_curl.py

#!/usr/bin/env python3
# coding: utf-8

import os
import sys
import subprocess
import tempfile
baseDir = os.path.abspath(os.path.dirname(__file__))


def check_curl():
    buildDir = os.path.join(baseDir, 'build')
    if not os.path.exists(buildDir):
        os.makedirs(buildDir)
    (fd, name) = tempfile.mkstemp(dir=buildDir, suffix='.h')
    try:
        handle = os.fdopen(fd, 'w')
        handle.write('#include <curl/curl.h>')
        handle.close()

        # This command won't work for Windows or Android build environments but we
        # don't want to use curl there anyway
        command = ['/usr/bin/env', 'gcc', '-E', name]
        process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        process.communicate()

        if process.returncode:
            # call failed, curl not available
            sys.stdout.write('0')
        else:
            # call succeeded, curl can be used
            sys.stdout.write('1')
    finally:
        os.remove(name)

if __name__ == '__main__':
    check_curl()