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135 lines
4.2 KiB
Python
135 lines
4.2 KiB
Python
# functions for handling cross-compilation
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import Utils, Logs, sys, os, Options, re
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from Configure import conf
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real_Popen = None
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ANSWER_UNKNOWN = (254, "")
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ANSWER_FAIL = (255, "")
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ANSWER_OK = (0, "")
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cross_answers_incomplete = False
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def add_answer(ca_file, msg, answer):
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'''add an answer to a set of cross answers'''
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try:
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f = open(ca_file, 'a')
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except:
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Logs.error("Unable to open cross-answers file %s" % ca_file)
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sys.exit(1)
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if answer == ANSWER_OK:
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f.write('%s: OK\n' % msg)
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elif answer == ANSWER_UNKNOWN:
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f.write('%s: UNKNOWN\n' % msg)
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elif answer == ANSWER_FAIL:
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f.write('%s: FAIL\n' % msg)
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else:
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(retcode, retstring) = answer
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f.write('%s: (%d, "%s")' % (msg, retcode, retstring))
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f.close()
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def cross_answer(ca_file, msg):
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'''return a (retcode,retstring) tuple from a answers file'''
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try:
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f = open(ca_file, 'r')
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except:
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add_answer(ca_file, msg, ANSWER_UNKNOWN)
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return ANSWER_UNKNOWN
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for line in f:
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line = line.strip()
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if line == '' or line[0] == '#':
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continue
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if line.find(':') != -1:
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a = line.split(':')
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thismsg = a[0].strip()
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if thismsg != msg:
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continue
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ans = a[1].strip()
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if ans == "OK" or ans == "YES":
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f.close()
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return ANSWER_OK
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elif ans == "UNKNOWN":
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f.close()
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return ANSWER_UNKNOWN
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elif ans == "FAIL" or ans == "NO":
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f.close()
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return ANSWER_FAIL
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elif ans[0] == '"':
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return (0, ans.strip('"'))
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elif ans[0] == "'":
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return (0, ans.strip("'"))
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else:
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m = re.match('\(\s*(-?\d+)\s*,\s*\"(.*)\"\s*\)', ans)
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if m:
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f.close()
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return (int(m.group(1)), m.group(2))
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else:
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raise Utils.WafError("Bad answer format '%s' in %s" % (line, ca_file))
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f.close()
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add_answer(ca_file, msg, ANSWER_UNKNOWN)
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return ANSWER_UNKNOWN
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class cross_Popen(Utils.pproc.Popen):
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'''cross-compilation wrapper for Popen'''
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def __init__(*k, **kw):
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(obj, args) = k
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if '--cross-execute' in args:
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# when --cross-execute is set, then change the arguments
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# to use the cross emulator
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i = args.index('--cross-execute')
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newargs = args[i+1].split()
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newargs.extend(args[0:i])
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args = newargs
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elif '--cross-answers' in args:
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# when --cross-answers is set, then change the arguments
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# to use the cross answers if available
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i = args.index('--cross-answers')
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ca_file = args[i+1]
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msg = args[i+2]
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ans = cross_answer(ca_file, msg)
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if ans == ANSWER_UNKNOWN:
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global cross_answers_incomplete
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cross_answers_incomplete = True
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(retcode, retstring) = ans
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args = ['/bin/sh', '-c', "echo -n '%s'; exit %d" % (retstring, retcode)]
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real_Popen.__init__(*(obj, args), **kw)
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@conf
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def SAMBA_CROSS_ARGS(conf, msg=None):
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'''get exec_args to pass when running cross compiled binaries'''
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if not conf.env.CROSS_COMPILE:
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return []
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global real_Popen
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if real_Popen is None:
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real_Popen = Utils.pproc.Popen
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Utils.pproc.Popen = cross_Popen
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ret = []
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if conf.env.CROSS_EXECUTE:
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ret.extend(['--cross-execute', conf.env.CROSS_EXECUTE])
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elif conf.env.CROSS_ANSWERS:
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if msg is None:
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raise Utils.WafError("Cannot have NULL msg in cross-answers")
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ret.extend(['--cross-answers', os.path.join(Options.launch_dir, conf.env.CROSS_ANSWERS), msg])
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if ret == []:
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raise Utils.WafError("Cannot cross-compile without either --cross-execute or --cross-answers")
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return ret
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@conf
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def SAMBA_CROSS_CHECK_COMPLETE(conf):
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'''check if we have some unanswered questions'''
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global cross_answers_incomplete
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if conf.env.CROSS_COMPILE and cross_answers_incomplete:
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raise Utils.WafError("Cross answers file %s is incomplete" % conf.env.CROSS_ANSWERS)
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return True
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