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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 >> sys.stderr, 'ccc: ' + message
sys.exit(1)
def quote(arg):
if '"' in arg:
return repr(arg)
return arg
def run(args):
print ' '.join(map(quote, args))
code = subprocess.call(args)
if code > 255:
code = 1
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 -disable-internalize'.split()
run(command + args)
def extension(path):
return path.split(".")[-1]
def changeextension(path, newext):
i = path.rfind('.')
if i < 0:
return path
j = path.rfind('/', 0, i)
print path
if j < 0:
return path[:i] + "." + newext
return path[j+1:i] + "." + newext
def inferlanguage(extension):
if extension == "c":
return "c"
elif extension in ["cpp", "cc"]:
return "c++"
elif extension == "i":
return "c-cpp-output"
elif extension == "m":
return "objective-c"
elif extension == "mi":
return "objective-c-cpp-output"
else:
return "unknown"
def main(args):
action = 'link'
output = ''
compile_opts = []
link_opts = []
files = []
save_temps = 0
language = ''
i = 0
while i < len(args):
arg = args[i]
# Modes ccc supports
if arg == '-E':
action = 'preprocess'
if arg == '-c':
action = 'compile'
if arg.startswith('-print-prog-name'):
action = 'print-prog-name'
if arg == '-save-temps':
save_temps = 1
# Options with no arguments that should pass through
if arg in ['-v']:
compile_opts.append(arg)
link_opts.append(arg)
# Options with one argument that should be ignored
if arg in ['--param', '-u']:
i += 1
# Prefix matches for the compile mode
if arg[:2] in ['-D', '-I', '-U', '-F']:
if not arg[2:]:
arg += args[i+1]
i += 1
compile_opts.append(arg)
if arg[:5] in ['-std=']:
compile_opts.append(arg)
# Options with one argument that should pass through
if arg in ['-include', '-isysroot', '-arch']:
compile_opts.append(arg)
compile_opts.append(args[i+1])
i += 1
# Prefix matches for the link mode
if arg[:2] in ['-l', '-L', '-O', '-F']:
if arg == '-O': arg = '-O1'
if arg == '-Os': arg = '-O2'
link_opts.append(arg)
# Options with one argument that should pass through
if arg in ['-framework', '-isysroot', '-arch']:
link_opts.append(arg)
link_opts.append(args[i+1])
i += 1
# Input files
if arg == '-filelist':
f = open(args[i+1])
for line in f:
files.append(line.strip())
f.close()
i += 1
if arg == '-x':
language = args[i+1]
i += 1
if arg[0] != '-':
files.append(arg)
# Output file
if arg == '-o':
output = args[i+1]
i += 1
i += 1
if action == 'print-prog-name':
# assume we can handle everything
print sys.argv[0]
return
if not files:
error('no input files')
if action == 'preprocess' or save_temps:
for i, file in enumerate(files):
if not language:
language = inferlanguage(extension(file))
if save_temps and action != 'preprocess':
# Need a temporary output file
if language == 'c':
poutput = changeextension(file, "i");
elif language == 'objective-c':
poutput = changeextension(file, "mi");
else:
poutput = changeextension(file, "tmp." + extension(file))
files[i] = poutput
else:
poutput = output
if poutput:
args = ['-x', language, '-o', poutput, file] + compile_opts
else:
args = ['-x', language, file] + compile_opts
preprocess(args)
# Discard the explicit language after used once
language = ''
if action == 'compile' or save_temps:
for i, file in enumerate(files):
if not language:
language = inferlanguage(extension(file))
if save_temps and action != "compile":
# Need a temporary output file
coutput = changeextension(file, "o");
files[i] = coutput
elif not output:
coutput = changeextension(file, "o")
else:
coutput = output
args = ['-x', language, '-o', coutput, file] + compile_opts
compile(args)
language = ''
if action == 'link':
for i, file in enumerate(files):
ext = extension(file)
if ext != "o" and ext != "a":
out = changeextension(file, "o")
args = ['-o', out, file] + compile_opts
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:])
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