#!/usr/bin/python

import re
import sys

try:
    import subprocess
except ImportError:
    # Older Python versions don't have the subprocess module.  In this case, we
    # don't filter the warnings.
    import os
    os.execvp(sys.argv[1], sys.argv[1:])

undefined_warning = re.compile('WARNING: "(.*?)" \[.*?\] undefined!')
duplicate_warning = re.compile("WARNING: [^ ]*: '(.*?)' exported twice. Previous.*")

actually_defined = ['sin', 'cos', 'acos', 'atan2',
    'rt_task_wait_period', 'rt_sem_wait', 'rt_sem_delete',
    'rt_task_init_cpuid', 'rt_set_periodic_mode', 'count2nano',
    'rt_task_resume', 'rt_release_irq', 'rtf_create', 'rt_sem_init',
    'rt_request_irq', 'rt_free_timer', 'rt_sem_wait_if',
    'rt_linux_use_fpu', 'rt_get_cpu_time_ns', 'rt_sem_signal',
    'rtf_destroy', 'rt_shm_alloc', 'rt_shm_free', 'rt_startup_irq',
    'stop_rt_timer', 'rtf_put', 'rt_whoami', 'rt_task_suspend',
    'rt_task_delete', 'rt_printk', 'start_rt_timer', 'rtf_get',
    'rt_task_make_periodic', 'rt_shutdown_irq', 'rt_get_time',
    'nano2count']

permitted_duplicates = ['kinematicsType', 'kinematicsForward',
    'kinematicsInverse']

kbuild = subprocess.Popen(sys.argv[1:], stderr=subprocess.PIPE)
for line in kbuild.stderr:
    #print undefined_warning.match(line),  duplicate_warning.match(line), repr(line)[:60]
    m = undefined_warning.match(line)
    if m and m.group(1) in actually_defined: continue

    m = duplicate_warning.match(line)
    if m and m.group(1) in permitted_duplicates: continue

    sys.stderr.write(line)

raise SystemExit, kbuild.wait()