#!/usr/bin/env python

#
# Compare the results of native and cross-compiled configure tests
#

from __future__ import print_function
import sys
import difflib

exceptions = [
    'BUILD_DIRECTORY', 'SELFTEST_PREFIX', 'defines',
    'CROSS_COMPILE', 'CROSS_ANSWERS', 'CROSS_EXECUTE',
    'LIBSOCKET_WRAPPER_SO_PATH',
    'LIBNSS_WRAPPER_SO_PATH',
    'LIBPAM_WRAPPER_SO_PATH',
    'LIBUID_WRAPPER_SO_PATH',
    'LIBRESOLV_WRAPPER_SO_PATH',
]

base_lines = list()
base_fname = ''

found_diff = False

for fname in sys.argv[1:]:
    lines = list()
    f = open(fname, 'r')
    for line in f:
        if line.startswith("cfg_files ="):
            # waf writes configuration files as absolute paths
            continue
        if len(line.split('=', 1)) == 2:
            key = line.split('=', 1)[0].strip()
            if key in exceptions:
                continue
        lines.append(line)
    f.close()
    if base_fname:
        diff = list(difflib.unified_diff(base_lines, lines, base_fname, fname))
        if diff:
            print('configuration files %s and %s do not match' % (base_fname, fname))
            for l in diff:
                sys.stdout.write(l)
            found_diff = True
    else:
        base_fname = fname
        base_lines = lines

if found_diff:
    sys.exit(1)