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import sys
import os
from os import listdir
from os.path import isfile, join
from subprocess import PIPE, Popen
# This is n list of files which are stable crates or simply are not crates,
# we don't check for the instability of these crates as they're all stable!
STABLE_CRATES = ['std', 'alloc', 'core', 'proc_macro',
'rsbegin.o', 'rsend.o', 'dllcrt2.o', 'crt2.o', 'clang_rt']
def convert_to_string(s):
if s.__class__.__name__ == 'bytes':
return s.decode('utf-8')
return s
def set_ld_lib_path():
var = os.environ.get("LD_LIB_PATH_ENVVAR")
rpath = os.environ.get("HOST_RPATH_DIR")
if var and rpath:
path = os.environ.get(var)
if path:
os.environ[var] = rpath + os.pathsep + path
else:
os.environ[var] = rpath
def exec_command(command, to_input=None):
child = None
if to_input is None:
child = Popen(command, stdout=PIPE, stderr=PIPE)
else:
child = Popen(command, stdout=PIPE, stderr=PIPE, stdin=PIPE)
stdout, stderr = child.communicate(input=to_input)
return (convert_to_string(stdout), convert_to_string(stderr))
def check_lib(lib):
if lib['name'] in STABLE_CRATES:
return True
print('verifying if {} is an unstable crate'.format(lib['name']))
stdout, stderr = exec_command([os.environ['RUSTC'], '-', '--crate-type', 'rlib',
'--extern', '{}={}'.format(lib['name'], lib['path'])],
to_input=('extern crate {};'.format(lib['name'])).encode('utf-8'))
if not 'use of unstable library feature' in '{}{}'.format(stdout, stderr):
print('crate {} "{}" is not unstable'.format(lib['name'], lib['path']))
print('{}{}'.format(stdout, stderr))
print('')
return False
return True
# Generate a list of all crates in the sysroot. To do this we list all files in
# rustc's sysroot, look at the filename, strip everything after the `-`, and
# strip the leading `lib` (if present)
def get_all_libs(dir_path):
return [{ 'path': join(dir_path, f), 'name': f[3:].split('-')[0] }
for f in listdir(dir_path)
if isfile(join(dir_path, f)) and f.endswith('.rlib') and f not in STABLE_CRATES]
set_ld_lib_path()
sysroot = exec_command([os.environ['RUSTC'], '--print', 'sysroot'])[0].replace('\n', '')
assert sysroot, "Could not read the rustc sysroot!"
libs = get_all_libs(join(sysroot, 'lib/rustlib/{}/lib'.format(os.environ['TARGET'])))
ret = 0
for lib in libs:
if not check_lib(lib):
# We continue so users can see all the not unstable crates.
ret = 1
sys.exit(ret)
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