| # Copyright 2012-2015 The Meson development team |
| |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """A library of random helper functionality.""" |
| |
| import platform, subprocess, operator, os, shutil, re, sys |
| |
| from glob import glob |
| |
| class MesonException(Exception): |
| def __init__(self, *args, **kwargs): |
| Exception.__init__(self, *args, **kwargs) |
| |
| class File: |
| def __init__(self, is_built, subdir, fname): |
| self.is_built = is_built |
| self.subdir = subdir |
| self.fname = fname |
| |
| def __str__(self): |
| return os.path.join(self.subdir, self.fname) |
| |
| def __repr__(self): |
| ret = '<File: {0}' |
| if not self.is_built: |
| ret += ' (not built)' |
| ret += '>' |
| return ret.format(os.path.join(self.subdir, self.fname)) |
| |
| @staticmethod |
| def from_source_file(source_root, subdir, fname): |
| if not os.path.isfile(os.path.join(source_root, subdir, fname)): |
| raise MesonException('File %s does not exist.' % fname) |
| return File(False, subdir, fname) |
| |
| @staticmethod |
| def from_built_file(subdir, fname): |
| return File(True, subdir, fname) |
| |
| @staticmethod |
| def from_absolute_file(fname): |
| return File(False, '', fname) |
| |
| def rel_to_builddir(self, build_to_src): |
| if self.is_built: |
| return os.path.join(self.subdir, self.fname) |
| else: |
| return os.path.join(build_to_src, self.subdir, self.fname) |
| |
| def endswith(self, ending): |
| return self.fname.endswith(ending) |
| |
| def split(self, s): |
| return self.fname.split(s) |
| |
| def __eq__(self, other): |
| return (self.fname, self.subdir, self.is_built) == (other.fname, other.subdir, other.is_built) |
| |
| def __hash__(self): |
| return hash((self.fname, self.subdir, self.is_built)) |
| |
| def get_compiler_for_source(compilers, src): |
| for comp in compilers: |
| if comp.can_compile(src): |
| return comp |
| raise RuntimeError('No specified compiler can handle file {!s}'.format(src)) |
| |
| def classify_unity_sources(compilers, sources): |
| compsrclist = {} |
| for src in sources: |
| comp = get_compiler_for_source(compilers, src) |
| if comp not in compsrclist: |
| compsrclist[comp] = [src] |
| else: |
| compsrclist[comp].append(src) |
| return compsrclist |
| |
| def flatten(item): |
| if not isinstance(item, list): |
| return item |
| result = [] |
| for i in item: |
| if isinstance(i, list): |
| result += flatten(i) |
| else: |
| result.append(i) |
| return result |
| |
| def is_osx(): |
| return platform.system().lower() == 'darwin' |
| |
| def is_linux(): |
| return platform.system().lower() == 'linux' |
| |
| def is_windows(): |
| platname = platform.system().lower() |
| return platname == 'windows' or 'mingw' in platname |
| |
| def is_debianlike(): |
| return os.path.isfile('/etc/debian_version') |
| |
| def exe_exists(arglist): |
| try: |
| p = subprocess.Popen(arglist, stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
| p.communicate() |
| if p.returncode == 0: |
| return True |
| except FileNotFoundError: |
| pass |
| return False |
| |
| def detect_vcs(source_dir): |
| vcs_systems = [ |
| dict(name = 'git', cmd = 'git', repo_dir = '.git', get_rev = 'git describe --dirty=+', rev_regex = '(.*)', dep = '.git/logs/HEAD'), |
| dict(name = 'mercurial', cmd = 'hg', repo_dir = '.hg', get_rev = 'hg id -i', rev_regex = '(.*)', dep = '.hg/dirstate'), |
| dict(name = 'subversion', cmd = 'svn', repo_dir = '.svn', get_rev = 'svn info', rev_regex = 'Revision: (.*)', dep = '.svn/wc.db'), |
| dict(name = 'bazaar', cmd = 'bzr', repo_dir = '.bzr', get_rev = 'bzr revno', rev_regex = '(.*)', dep = '.bzr'), |
| ] |
| |
| segs = source_dir.replace('\\', '/').split('/') |
| for i in range(len(segs), -1, -1): |
| curdir = '/'.join(segs[:i]) |
| for vcs in vcs_systems: |
| if os.path.isdir(os.path.join(curdir, vcs['repo_dir'])) and shutil.which(vcs['cmd']): |
| vcs['wc_dir'] = curdir |
| return vcs |
| return None |
| |
| def grab_leading_numbers(vstr): |
| result = [] |
| for x in vstr.split('.'): |
| try: |
| result.append(int(x)) |
| except ValueError: |
| break |
| return result |
| |
| numpart = re.compile('[0-9.]+') |
| |
| def version_compare(vstr1, vstr2): |
| match = numpart.match(vstr1.strip()) |
| if match is None: |
| raise MesonException('Uncomparable version string %s.' % vstr1) |
| vstr1 = match.group(0) |
| if vstr2.startswith('>='): |
| cmpop = operator.ge |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('<='): |
| cmpop = operator.le |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('!='): |
| cmpop = operator.ne |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('=='): |
| cmpop = operator.eq |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('='): |
| cmpop = operator.eq |
| vstr2 = vstr2[1:] |
| elif vstr2.startswith('>'): |
| cmpop = operator.gt |
| vstr2 = vstr2[1:] |
| elif vstr2.startswith('<'): |
| cmpop = operator.lt |
| vstr2 = vstr2[1:] |
| else: |
| cmpop = operator.eq |
| varr1 = grab_leading_numbers(vstr1) |
| varr2 = grab_leading_numbers(vstr2) |
| return cmpop(varr1, varr2) |
| |
| def default_libdir(): |
| if is_debianlike(): |
| try: |
| pc = subprocess.Popen(['dpkg-architecture', '-qDEB_HOST_MULTIARCH'], |
| stdout=subprocess.PIPE, |
| stderr=subprocess.DEVNULL) |
| (stdo, _) = pc.communicate() |
| if pc.returncode == 0: |
| archpath = stdo.decode().strip() |
| return 'lib/' + archpath |
| except Exception: |
| pass |
| if os.path.isdir('/usr/lib64') and not os.path.islink('/usr/lib64'): |
| return 'lib64' |
| return 'lib' |
| |
| def default_libexecdir(): |
| # There is no way to auto-detect this, so it must be set at build time |
| return 'libexec' |
| |
| def default_prefix(): |
| return 'c:/' if is_windows() else '/usr/local' |
| |
| def get_library_dirs(): |
| if is_windows(): |
| return ['C:/mingw/lib'] # Fixme |
| if is_osx(): |
| return ['/usr/lib'] # Fix me as well. |
| # The following is probably Debian/Ubuntu specific. |
| # /usr/local/lib is first because it contains stuff |
| # installed by the sysadmin and is probably more up-to-date |
| # than /usr/lib. If you feel that this search order is |
| # problematic, please raise the issue on the mailing list. |
| unixdirs = ['/usr/local/lib', '/usr/lib', '/lib'] |
| plat = subprocess.check_output(['uname', '-m']).decode().strip() |
| # This is a terrible hack. I admit it and I'm really sorry. |
| # I just don't know what the correct solution is. |
| if plat == 'i686': |
| plat = 'i386' |
| if plat.startswith('arm'): |
| plat = 'arm' |
| unixdirs += glob('/usr/lib/' + plat + '*') |
| if os.path.exists('/usr/lib64'): |
| unixdirs.append('/usr/lib64') |
| unixdirs += glob('/lib/' + plat + '*') |
| if os.path.exists('/lib64'): |
| unixdirs.append('/lib64') |
| unixdirs += glob('/lib/' + plat + '*') |
| return unixdirs |
| |
| |
| def do_replacement(regex, line, confdata): |
| match = re.search(regex, line) |
| while match: |
| varname = match.group(1) |
| if varname in confdata.keys(): |
| (var, desc) = confdata.get(varname) |
| if isinstance(var, str): |
| pass |
| elif isinstance(var, int): |
| var = str(var) |
| else: |
| raise RuntimeError('Tried to replace a variable with something other than a string or int.') |
| else: |
| var = '' |
| line = line.replace('@' + varname + '@', var) |
| match = re.search(regex, line) |
| return line |
| |
| def do_mesondefine(line, confdata): |
| arr = line.split() |
| if len(arr) != 2: |
| raise MesonException('#mesondefine does not contain exactly two tokens: %s', line.strip()) |
| varname = arr[1] |
| try: |
| (v, desc) = confdata.get(varname) |
| except KeyError: |
| return '/* #undef %s */\n' % varname |
| if isinstance(v, bool): |
| if v: |
| return '#define %s\n' % varname |
| else: |
| return '#undef %s\n' % varname |
| elif isinstance(v, int): |
| return '#define %s %d\n' % (varname, v) |
| elif isinstance(v, str): |
| return '#define %s %s\n' % (varname, v) |
| else: |
| raise MesonException('#mesondefine argument "%s" is of unknown type.' % varname) |
| |
| |
| def do_conf_file(src, dst, confdata): |
| try: |
| with open(src, encoding='utf-8') as f: |
| data = f.readlines() |
| except Exception as e: |
| raise MesonException('Could not read input file %s: %s' % (src, str(e))) |
| # Only allow (a-z, A-Z, 0-9, _, -) as valid characters for a define |
| # Also allow escaping '@' with '\@' |
| regex = re.compile(r'[^\\]?@([-a-zA-Z0-9_]+)@') |
| result = [] |
| for line in data: |
| if line.startswith('#mesondefine'): |
| line = do_mesondefine(line, confdata) |
| else: |
| line = do_replacement(regex, line, confdata) |
| result.append(line) |
| dst_tmp = dst + '~' |
| with open(dst_tmp, 'w') as f: |
| f.writelines(result) |
| shutil.copymode(src, dst_tmp) |
| replace_if_different(dst, dst_tmp) |
| |
| def dump_conf_header(ofilename, cdata): |
| with open(ofilename, 'w') as ofile: |
| ofile.write('''/* |
| * Autogenerated by the Meson build system. |
| * Do not edit, your changes will be lost. |
| */ |
| |
| #pragma once |
| |
| ''') |
| for k in sorted(cdata.keys()): |
| (v, desc) = cdata.get(k) |
| if desc: |
| ofile.write('/* %s */\n' % desc) |
| if isinstance(v, bool): |
| if v: |
| ofile.write('#define %s\n\n' % k) |
| else: |
| ofile.write('#undef %s\n\n' % k) |
| elif isinstance(v, (int, str)): |
| ofile.write('#define %s %s\n\n' % (k, v)) |
| else: |
| raise MesonException('Unknown data type in configuration file entry: ' + k) |
| |
| def replace_if_different(dst, dst_tmp): |
| # If contents are identical, don't touch the file to prevent |
| # unnecessary rebuilds. |
| different = True |
| try: |
| with open(dst, 'r') as f1, open(dst_tmp, 'r') as f2: |
| if f1.read() == f2.read(): |
| different = False |
| except FileNotFoundError: |
| pass |
| if different: |
| os.replace(dst_tmp, dst) |
| else: |
| os.unlink(dst_tmp) |
| |
| def stringlistify(item): |
| if isinstance(item, str): |
| item = [item] |
| if not isinstance(item, list): |
| raise MesonException('Item is not an array') |
| for i in item: |
| if not isinstance(i, str): |
| raise MesonException('List item not a string.') |
| return item |
| |
| def expand_arguments(args): |
| expended_args = [] |
| for arg in args: |
| if not arg.startswith('@'): |
| expended_args.append(arg) |
| continue |
| |
| args_file = arg[1:] |
| try: |
| with open(args_file) as f: |
| extended_args = f.read().split() |
| expended_args += extended_args |
| except Exception as e: |
| print('Error expanding command line arguments, %s not found' % args_file) |
| print(e) |
| return None |
| return expended_args |
