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# a waf tool to add autoconf-like macros to the configure section
# and for SAMBA_ macros for building libraries, binaries etc
import Build, os, sys, Options, Utils, Task, re, fnmatch, Logs
from TaskGen import feature, before
from Configure import conf
from Logs import debug
import shlex
# TODO: make this a --option
LIB_PATH="shared"
# sigh, python octal constants are a mess
MODE_644 = int('644', 8)
MODE_755 = int('755', 8)
@conf
def SET_TARGET_TYPE(ctx, target, value):
'''set the target type of a target'''
cache = LOCAL_CACHE(ctx, 'TARGET_TYPE')
if target in cache and cache[target] != 'EMPTY':
Logs.error("ERROR: Target '%s' in directory %s re-defined as %s - was %s" % (target, ctx.curdir, value, cache[target]))
sys.exit(1)
LOCAL_CACHE_SET(ctx, 'TARGET_TYPE', target, value)
debug("task_gen: Target '%s' created of type '%s' in %s" % (target, value, ctx.curdir))
return True
def GET_TARGET_TYPE(ctx, target):
'''get target type from cache'''
cache = LOCAL_CACHE(ctx, 'TARGET_TYPE')
if not target in cache:
return None
return cache[target]
######################################################
# this is used as a decorator to make functions only
# run once. Based on the idea from
# http://stackoverflow.com/questions/815110/is-there-a-decorator-to-simply-cache-function-return-values
runonce_ret = {}
def runonce(function):
def runonce_wrapper(*args):
if args in runonce_ret:
return runonce_ret[args]
else:
ret = function(*args)
runonce_ret[args] = ret
return ret
return runonce_wrapper
def ADD_LD_LIBRARY_PATH(path):
'''add something to LD_LIBRARY_PATH'''
if 'LD_LIBRARY_PATH' in os.environ:
oldpath = os.environ['LD_LIBRARY_PATH']
else:
oldpath = ''
newpath = oldpath.split(':')
if not path in newpath:
newpath.append(path)
os.environ['LD_LIBRARY_PATH'] = ':'.join(newpath)
def needs_private_lib(bld, target):
'''return True if a target links to a private library'''
for lib in getattr(target, "final_libs", []):
t = bld.name_to_obj(lib, bld.env)
if t and getattr(t, 'private_library', False):
return True
return False
def install_rpath(target):
'''the rpath value for installation'''
bld = target.bld
bld.env['RPATH'] = []
ret = set()
if bld.env.RPATH_ON_INSTALL:
ret.add(bld.EXPAND_VARIABLES(bld.env.LIBDIR))
if bld.env.RPATH_ON_INSTALL_PRIVATE and needs_private_lib(bld, target):
ret.add(bld.EXPAND_VARIABLES(bld.env.PRIVATELIBDIR))
return list(ret)
def build_rpath(bld):
'''the rpath value for build'''
rpaths = [os.path.normpath('%s/%s' % (bld.env.BUILD_DIRECTORY, d)) for d in ("shared", "shared/private")]
bld.env['RPATH'] = []
if bld.env.RPATH_ON_BUILD:
return rpaths
for rpath in rpaths:
ADD_LD_LIBRARY_PATH(rpath)
return []
@conf
def LOCAL_CACHE(ctx, name):
'''return a named build cache dictionary, used to store
state inside other functions'''
if name in ctx.env:
return ctx.env[name]
ctx.env[name] = {}
return ctx.env[name]
@conf
def LOCAL_CACHE_SET(ctx, cachename, key, value):
'''set a value in a local cache'''
cache = LOCAL_CACHE(ctx, cachename)
cache[key] = value
@conf
def ASSERT(ctx, expression, msg):
'''a build assert call'''
if not expression:
raise Utils.WafError("ERROR: %s\n" % msg)
Build.BuildContext.ASSERT = ASSERT
def SUBDIR(bld, subdir, list):
'''create a list of files by pre-pending each with a subdir name'''
ret = ''
for l in TO_LIST(list):
ret = ret + os.path.normpath(os.path.join(subdir, l)) + ' '
return ret
Build.BuildContext.SUBDIR = SUBDIR
def dict_concat(d1, d2):
'''concatenate two dictionaries d1 += d2'''
for t in d2:
if t not in d1:
d1[t] = d2[t]
def exec_command(self, cmd, **kw):
'''this overrides the 'waf -v' debug output to be in a nice
unix like format instead of a python list.
Thanks to ita on #waf for this'''
import Utils, Logs
_cmd = cmd
if isinstance(cmd, list):
_cmd = ' '.join(cmd)
debug('runner: %s' % _cmd)
if self.log:
self.log.write('%s\n' % cmd)
kw['log'] = self.log
try:
if not kw.get('cwd', None):
kw['cwd'] = self.cwd
except AttributeError:
self.cwd = kw['cwd'] = self.bldnode.abspath()
return Utils.exec_command(cmd, **kw)
Build.BuildContext.exec_command = exec_command
def ADD_COMMAND(opt, name, function):
'''add a new top level command to waf'''
Utils.g_module.__dict__[name] = function
opt.name = function
Options.Handler.ADD_COMMAND = ADD_COMMAND
@feature('cc', 'cshlib', 'cprogram')
@before('apply_core','exec_rule')
def process_depends_on(self):
'''The new depends_on attribute for build rules
allow us to specify a dependency on output from
a source generation rule'''
if getattr(self , 'depends_on', None):
lst = self.to_list(self.depends_on)
for x in lst:
y = self.bld.name_to_obj(x, self.env)
self.bld.ASSERT(y is not None, "Failed to find dependency %s of %s" % (x, self.name))
y.post()
if getattr(y, 'more_includes', None):
self.includes += " " + y.more_includes
os_path_relpath = getattr(os.path, 'relpath', None)
if os_path_relpath is None:
# Python < 2.6 does not have os.path.relpath, provide a replacement
# (imported from Python2.6.5~rc2)
def os_path_relpath(path, start):
"""Return a relative version of a path"""
start_list = os.path.abspath(start).split("/")
path_list = os.path.abspath(path).split("/")
# Work out how much of the filepath is shared by start and path.
i = len(os.path.commonprefix([start_list, path_list]))
rel_list = ['..'] * (len(start_list)-i) + path_list[i:]
if not rel_list:
return start
return os.path.join(*rel_list)
def unique_list(seq):
'''return a uniquified list in the same order as the existing list'''
seen = {}
result = []
for item in seq:
if item in seen: continue
seen[item] = True
result.append(item)
return result
def TO_LIST(str, delimiter=None):
'''Split a list, preserving quoted strings and existing lists'''
if str is None:
return []
if isinstance(str, list):
return str
lst = str.split(delimiter)
# the string may have had quotes in it, now we
# check if we did have quotes, and use the slower shlex
# if we need to
for e in lst:
if e[0] == '"':
return shlex.split(str)
return lst
def subst_vars_error(string, env):
'''substitute vars, throw an error if a variable is not defined'''
lst = re.split('(\$\{\w+\})', string)
out = []
for v in lst:
if re.match('\$\{\w+\}', v):
vname = v[2:-1]
if not vname in env:
Logs.error("Failed to find variable %s in %s" % (vname, string))
sys.exit(1)
v = env[vname]
out.append(v)
return ''.join(out)
@conf
def SUBST_ENV_VAR(ctx, varname):
'''Substitute an environment variable for any embedded variables'''
return subst_vars_error(ctx.env[varname], ctx.env)
Build.BuildContext.SUBST_ENV_VAR = SUBST_ENV_VAR
def ENFORCE_GROUP_ORDERING(bld):
'''enforce group ordering for the project. This
makes the group ordering apply only when you specify
a target with --target'''
if Options.options.compile_targets:
@feature('*')
@before('exec_rule', 'apply_core', 'collect')
def force_previous_groups(self):
if getattr(self.bld, 'enforced_group_ordering', False) == True:
return
self.bld.enforced_group_ordering = True
def group_name(g):
tm = self.bld.task_manager
return [x for x in tm.groups_names if id(tm.groups_names[x]) == id(g)][0]
my_id = id(self)
bld = self.bld
stop = None
for g in bld.task_manager.groups:
for t in g.tasks_gen:
if id(t) == my_id:
stop = id(g)
debug('group: Forcing up to group %s for target %s',
group_name(g), self.name or self.target)
break
if stop != None:
break
if stop is None:
return
for i in xrange(len(bld.task_manager.groups)):
g = bld.task_manager.groups[i]
bld.task_manager.current_group = i
if id(g) == stop:
break
debug('group: Forcing group %s', group_name(g))
for t in g.tasks_gen:
if not getattr(t, 'forced_groups', False):
debug('group: Posting %s', t.name or t.target)
t.forced_groups = True
t.post()
Build.BuildContext.ENFORCE_GROUP_ORDERING = ENFORCE_GROUP_ORDERING
def recursive_dirlist(dir, relbase, pattern=None):
'''recursive directory list'''
ret = []
for f in os.listdir(dir):
f2 = dir + '/' + f
if os.path.isdir(f2):
ret.extend(recursive_dirlist(f2, relbase))
else:
if pattern and not fnmatch.fnmatch(f, pattern):
continue
ret.append(os_path_relpath(f2, relbase))
return ret
def mkdir_p(dir):
'''like mkdir -p'''
if not dir:
return
if dir.endswith("/"):
mkdir_p(dir[:-1])
return
if os.path.isdir(dir):
return
mkdir_p(os.path.dirname(dir))
os.mkdir(dir)
def SUBST_VARS_RECURSIVE(string, env):
'''recursively expand variables'''
if string is None:
return string
limit=100
while (string.find('${') != -1 and limit > 0):
string = subst_vars_error(string, env)
limit -= 1
return string
@conf
def EXPAND_VARIABLES(ctx, varstr, vars=None):
'''expand variables from a user supplied dictionary
This is most useful when you pass vars=locals() to expand
all your local variables in strings
'''
if isinstance(varstr, list):
ret = []
for s in varstr:
ret.append(EXPAND_VARIABLES(ctx, s, vars=vars))
return ret
if not isinstance(varstr, str):
return varstr
import Environment
env = Environment.Environment()
ret = varstr
# substitute on user supplied dict if avaiilable
if vars is not None:
for v in vars.keys():
env[v] = vars[v]
ret = SUBST_VARS_RECURSIVE(ret, env)
# if anything left, subst on the environment as well
if ret.find('${') != -1:
ret = SUBST_VARS_RECURSIVE(ret, ctx.env)
# make sure there is nothing left. Also check for the common
# typo of $( instead of ${
if ret.find('${') != -1 or ret.find('$(') != -1:
Logs.error('Failed to substitute all variables in varstr=%s' % ret)
sys.exit(1)
return ret
Build.BuildContext.EXPAND_VARIABLES = EXPAND_VARIABLES
def RUN_COMMAND(cmd,
env=None,
shell=False):
'''run a external command, return exit code or signal'''
if env:
cmd = SUBST_VARS_RECURSIVE(cmd, env)
status = os.system(cmd)
if os.WIFEXITED(status):
return os.WEXITSTATUS(status)
if os.WIFSIGNALED(status):
return - os.WTERMSIG(status)
Logs.error("Unknown exit reason %d for command: %s" (status, cmd))
return -1
# make sure we have md5. some systems don't have it
try:
from hashlib import md5
except:
try:
import md5
except:
import Constants
Constants.SIG_NIL = hash('abcd')
class replace_md5(object):
def __init__(self):
self.val = None
def update(self, val):
self.val = hash((self.val, val))
def digest(self):
return str(self.val)
def hexdigest(self):
return self.digest().encode('hex')
def replace_h_file(filename):
f = open(filename, 'rb')
m = replace_md5()
while (filename):
filename = f.read(100000)
m.update(filename)
f.close()
return m.digest()
Utils.md5 = replace_md5
Task.md5 = replace_md5
Utils.h_file = replace_h_file
def LOAD_ENVIRONMENT():
'''load the configuration environment, allowing access to env vars
from new commands'''
import Environment
env = Environment.Environment()
try:
env.load('.lock-wscript')
env.load(env.blddir + '/c4che/default.cache.py')
except:
pass
return env
def IS_NEWER(bld, file1, file2):
'''return True if file1 is newer than file2'''
t1 = os.stat(os.path.join(bld.curdir, file1)).st_mtime
t2 = os.stat(os.path.join(bld.curdir, file2)).st_mtime
return t1 > t2
Build.BuildContext.IS_NEWER = IS_NEWER
@conf
def RECURSE(ctx, directory):
'''recurse into a directory, relative to the curdir or top level'''
try:
visited_dirs = ctx.visited_dirs
except:
visited_dirs = ctx.visited_dirs = set()
d = os.path.join(ctx.curdir, directory)
if os.path.exists(d):
abspath = os.path.abspath(d)
else:
abspath = os.path.abspath(os.path.join(Utils.g_module.srcdir, directory))
ctxclass = ctx.__class__.__name__
key = ctxclass + ':' + abspath
if key in visited_dirs:
# already done it
return
visited_dirs.add(key)
relpath = os_path_relpath(abspath, ctx.curdir)
if ctxclass == 'Handler':
return ctx.sub_options(relpath)
if ctxclass == 'ConfigurationContext':
return ctx.sub_config(relpath)
if ctxclass == 'BuildContext':
return ctx.add_subdirs(relpath)
Logs.error('Unknown RECURSE context class', ctxclass)
raise
Options.Handler.RECURSE = RECURSE
Build.BuildContext.RECURSE = RECURSE
def CHECK_MAKEFLAGS(bld):
'''check for MAKEFLAGS environment variable in case we are being
called from a Makefile try to honor a few make command line flags'''
if not 'WAF_MAKE' in os.environ:
return
makeflags = os.environ.get('MAKEFLAGS')
if makeflags is None:
return
jobs_set = False
# we need to use shlex.split to cope with the escaping of spaces
# in makeflags
for opt in shlex.split(makeflags):
# options can come either as -x or as x
if opt[0:2] == 'V=':
Options.options.verbose = Logs.verbose = int(opt[2:])
if Logs.verbose > 0:
Logs.zones = ['runner']
if Logs.verbose > 2:
Logs.zones = ['*']
elif opt[0].isupper() and opt.find('=') != -1:
# this allows us to set waf options on the make command line
# for example, if you do "make FOO=blah", then we set the
# option 'FOO' in Options.options, to blah. If you look in wafsamba/wscript
# you will see that the command line accessible options have their dest=
# set to uppercase, to allow for passing of options from make in this way
# this is also how "make test TESTS=testpattern" works, and
# "make VERBOSE=1" as well as things like "make SYMBOLCHECK=1"
loc = opt.find('=')
setattr(Options.options, opt[0:loc], opt[loc+1:])
elif opt[0] != '-':
for v in opt:
if v == 'j':
jobs_set = True
elif v == 'k':
Options.options.keep = True
elif opt == '-j':
jobs_set = True
elif opt == '-k':
Options.options.keep = True
if not jobs_set:
# default to one job
Options.options.jobs = 1
Build.BuildContext.CHECK_MAKEFLAGS = CHECK_MAKEFLAGS
option_groups = {}
def option_group(opt, name):
'''find or create an option group'''
global option_groups
if name in option_groups:
return option_groups[name]
gr = opt.add_option_group(name)
option_groups[name] = gr
return gr
Options.Handler.option_group = option_group
def save_file(filename, contents, create_dir=False):
'''save data to a file'''
if create_dir:
mkdir_p(os.path.dirname(filename))
try:
f = open(filename, 'w')
f.write(contents)
f.close()
except:
return False
return True
def load_file(filename):
'''return contents of a file'''
try:
f = open(filename, 'r')
r = f.read()
f.close()
except:
return None
return r
def reconfigure(ctx):
'''rerun configure if necessary'''
import Configure, samba_wildcard, Scripting
if not os.path.exists(".lock-wscript"):
raise Utils.WafError('configure has not been run')
bld = samba_wildcard.fake_build_environment()
Configure.autoconfig = True
Scripting.check_configured(bld)
def map_shlib_extension(ctx, name, python=False):
'''map a filename with a shared library extension of .so to the real shlib name'''
if name is None:
return None
if name[-1:].isdigit():
# some libraries have specified versions in the wscript rule
return name
(root1, ext1) = os.path.splitext(name)
if python:
(root2, ext2) = os.path.splitext(ctx.env.pyext_PATTERN)
else:
(root2, ext2) = os.path.splitext(ctx.env.shlib_PATTERN)
return root1+ext2
Build.BuildContext.map_shlib_extension = map_shlib_extension
def apply_pattern(filename, pattern):
'''apply a filename pattern to a filename that may have a directory component'''
dirname = os.path.dirname(filename)
if not dirname:
return pattern % filename
basename = os.path.basename(filename)
return os.path.join(dirname, pattern % basename)
def make_libname(ctx, name, nolibprefix=False, version=None, python=False):
"""make a library filename
Options:
nolibprefix: don't include the lib prefix
version : add a version number
python : if we should use python module name conventions"""
if python:
libname = apply_pattern(name, ctx.env.pyext_PATTERN)
else:
libname = apply_pattern(name, ctx.env.shlib_PATTERN)
if nolibprefix and libname[0:3] == 'lib':
libname = libname[3:]
if version:
if version[0] == '.':
version = version[1:]
(root, ext) = os.path.splitext(libname)
if ext == ".dylib":
# special case - version goes before the prefix
libname = "%s.%s%s" % (root, version, ext)
else:
libname = "%s%s.%s" % (root, ext, version)
return libname
Build.BuildContext.make_libname = make_libname
def get_tgt_list(bld):
'''return a list of build objects for samba'''
targets = LOCAL_CACHE(bld, 'TARGET_TYPE')
# build a list of task generators we are interested in
tgt_list = []
for tgt in targets:
type = targets[tgt]
if not type in ['SUBSYSTEM', 'MODULE', 'BINARY', 'LIBRARY', 'ASN1', 'PYTHON']:
continue
t = bld.name_to_obj(tgt, bld.env)
if t is None:
Logs.error("Target %s of type %s has no task generator" % (tgt, type))
sys.exit(1)
tgt_list.append(t)
return tgt_list
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