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#!/usr/bin/env python
#
# The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
#
# This script attempts to be a drop-in replacement for gcc.
#
##===----------------------------------------------------------------------===##
import sys
import subprocess
def error(message):
print 'ccc: ' + message
sys.exit(1)
def run(args):
print ' '.join(args)
code = subprocess.call(args)
if code:
sys.exit(code)
def preprocess(args):
command = 'clang -E'.split()
run(command + args)
def compile(args):
command = 'clang -emit-llvm-bc'.split()
run(command + args)
def link(args):
command = 'llvm-ld -native'.split()
run(command + args)
def main(args):
action = 'link'
output = ''
compile_opts = ['-U__GNUC__']
link_opts = []
files = []
i = 0
while i < len(args):
arg = args[i]
if arg == '-E':
action = 'preprocess'
if arg == '-c':
action = 'compile'
if arg == '-o':
output = args[i+1]
i += 1
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if arg[:2] in ['-D', '-I', '-U']:
if not arg[2:]:
arg += args[i+1]
i += 1
compile_opts.append(arg)
if arg[:2] in ['-l', '-L', '-O']:
if arg == '-O': arg = '-O1'
if arg == '-Os': arg = '-O2'
link_opts.append(arg)
if arg[0] != '-':
files.append(arg)
i += 1
if not files:
error('no input files')
if action == 'preprocess':
args = compile_opts + files
preprocess(args)
if action == 'compile':
if not output:
output = files[0].replace('.c', '.o')
args = ['-o', output] + compile_opts + files
compile(args)
if action == 'link':
for i, file in enumerate(files):
if '.c' in file:
out = file.replace('.c', '.o')
args = ['-o', out] + compile_opts + [file]
compile(args)
files[i] = out
if not output:
output = 'a.out'
args = ['-o', output] + link_opts + files
link(args)
if __name__ == '__main__':
main(sys.argv[1:])