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#! /usr/bin/env python3
# Invoke sparse based on the contents of compile_commands.json,
# also working around several deficiencies in cgcc's command line
# parsing
import json
import subprocess
import os
import sys
import shlex
def cmdline_for_sparse(sparse, cmdline):
# Do not include the C compiler executable
skip = True
arg = False
out = sparse + ['-no-compile']
for x in cmdline:
if arg:
out.append(x)
arg = False
continue
if skip:
skip = False
continue
# prevent sparse from treating output files as inputs
if x == '-MF' or x == '-MQ' or x == '-o':
skip = True
continue
# cgcc ignores -no-compile if it sees -M or -MM?
if x.startswith('-M'):
continue
# sparse does not understand these!
if x == '-iquote' or x == '-isystem':
x = '-I'
if x == '-I':
arg = True
out.append(x)
return out
root_path = os.getenv('MESON_BUILD_ROOT')
def build_path(s):
return s if not root_path else os.path.join(root_path, s)
ccjson_path = build_path(sys.argv[1])
with open(ccjson_path, 'r') as fd:
compile_commands = json.load(fd)
sparse = sys.argv[2:]
sparse_env = os.environ.copy()
for cmd in compile_commands:
cmdline = shlex.split(cmd['command'])
cmd = cmdline_for_sparse(sparse, cmdline)
print('REAL_CC=%s' % shlex.quote(cmdline[0]),
' '.join((shlex.quote(x) for x in cmd)))
sparse_env['REAL_CC'] = cmdline[0]
r = subprocess.run(cmd, env=sparse_env, cwd=root_path)
if r.returncode != 0:
sys.exit(r.returncode)
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