samba_waf18.py 14.1 KB
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# compatibility layer for building with more recent waf versions

import os, shlex, sys
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from waflib import Build, Configure, Node, Utils, Options, Logs, TaskGen
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from waflib import ConfigSet
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from waflib.TaskGen import feature, after
from waflib.Configure import conf, ConfigurationContext
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from waflib.Tools.flex import decide_ext

# This version of flexfun runs in tsk.get_cwd() as opposed to the
# bld.variant_dir: since input paths adjusted against tsk.get_cwd(), we have to
# use tsk.get_cwd() for the work directory as well.
def flexfun(tsk):
    env = tsk.env
    bld = tsk.generator.bld
    def to_list(xx):
        if isinstance(xx, str):
            return [xx]
        return xx
    tsk.last_cmd = lst = []
    lst.extend(to_list(env.FLEX))
    lst.extend(to_list(env.FLEXFLAGS))
    inputs = [a.path_from(tsk.get_cwd()) for a in tsk.inputs]
    if env.FLEX_MSYS:
        inputs = [x.replace(os.sep, '/') for x in inputs]
    lst.extend(inputs)
    lst = [x for x in lst if x]
    txt = bld.cmd_and_log(lst, cwd=tsk.get_cwd(), env=env.env or None, quiet=0)
    tsk.outputs[0].write(txt.replace('\r\n', '\n').replace('\r', '\n')) # issue #1207

TaskGen.declare_chain(
    name = 'flex',
    rule = flexfun, # issue #854
    ext_in = '.l',
    decider = decide_ext,
)

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Build.BuildContext.variant = 'default'
Build.CleanContext.variant = 'default'
Build.InstallContext.variant = 'default'
Build.UninstallContext.variant = 'default'
Build.ListContext.variant = 'default'
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def abspath(self, env=None):
    if env and hasattr(self, 'children'):
        return self.get_bld().abspath()
    return self.old_abspath()
Node.Node.old_abspath = Node.Node.abspath
Node.Node.abspath = abspath

def bldpath(self, env=None):
    return self.abspath()
    #return self.path_from(self.ctx.bldnode.parent)
Node.Node.bldpath = bldpath

def srcpath(self, env=None):
    return self.abspath()
    #return self.path_from(self.ctx.bldnode.parent)
Node.Node.srcpath = srcpath

def store_fast(self, filename):
    file = open(filename, 'wb')
    data = self.get_merged_dict()
    try:
        Build.cPickle.dump(data, file, -1)
    finally:
        file.close()
ConfigSet.ConfigSet.store_fast = store_fast

def load_fast(self, filename):
    file = open(filename, 'rb')
    try:
        data = Build.cPickle.load(file)
    finally:
        file.close()
    self.table.update(data)
ConfigSet.ConfigSet.load_fast = load_fast

@feature('c', 'cxx', 'd', 'asm', 'fc', 'includes')
@after('propagate_uselib_vars', 'process_source')
def apply_incpaths(self):
    lst = self.to_incnodes(self.to_list(getattr(self, 'includes', [])) + self.env['INCLUDES'])
    self.includes_nodes = lst
    cwdx = getattr(self.bld, 'cwdx', self.bld.bldnode)
    self.env['INCPATHS'] = [x.path_from(cwdx) for x in lst]

@conf
def define(self, key, val, quote=True, comment=None):
   assert key and isinstance(key, str)

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   if val is None:
       val = ()
   elif isinstance(val, bool):
       val = int(val)
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   # waf 1.5
   self.env[key] = val

   if isinstance(val, int) or isinstance(val, float):
           s = '%s=%s'
   else:
           s = quote and '%s="%s"' or '%s=%s'
   app = s % (key, str(val))

   ban = key + '='
   lst = self.env.DEFINES
   for x in lst:
           if x.startswith(ban):
                   lst[lst.index(x)] = app
                   break
   else:
           self.env.append_value('DEFINES', app)

   self.env.append_unique('define_key', key)

# compat15 removes this but we want to keep it
@conf
def undefine(self, key, from_env=True, comment=None):
    assert key and isinstance(key, str)

    ban = key + '='
    self.env.DEFINES = [x for x in self.env.DEFINES if not x.startswith(ban)]
    self.env.append_unique('define_key', key)
    # waf 1.5
    if from_env:
        self.env[key] = ()

class ConfigurationContext(Configure.ConfigurationContext):
    def init_dirs(self):
        self.setenv('default')
        self.env.merge_config_header = True
        return super(ConfigurationContext, self).init_dirs()

def find_program_samba(self, *k, **kw):
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    # Override the waf default set in the @conf decorator in Configure.py
    if 'mandatory' not in kw:
        kw['mandatory'] = False
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    ret = self.find_program_old(*k, **kw)
    return ret
Configure.ConfigurationContext.find_program_old = Configure.ConfigurationContext.find_program
Configure.ConfigurationContext.find_program = find_program_samba

Build.BuildContext.ENFORCE_GROUP_ORDERING = Utils.nada
Build.BuildContext.AUTOCLEANUP_STALE_FILES = Utils.nada

@conf
def check(self, *k, **kw):
    '''Override the waf defaults to inject --with-directory options'''

    # match the configuration test with speficic options, for example:
    # --with-libiconv -> Options.options.iconv_open -> "Checking for library iconv"
    self.validate_c(kw)

    additional_dirs = []
    if 'msg' in kw:
        msg = kw['msg']
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        for x in Options.OptionsContext.parser.parser.option_list:
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             if getattr(x, 'match', None) and msg in x.match:
                 d = getattr(Options.options, x.dest, '')
                 if d:
                     additional_dirs.append(d)

    # we add the additional dirs twice: once for the test data, and again if the compilation test suceeds below
    def add_options_dir(dirs, env):
        for x in dirs:
             if not x in env.CPPPATH:
                 env.CPPPATH = [os.path.join(x, 'include')] + env.CPPPATH
             if not x in env.LIBPATH:
                 env.LIBPATH = [os.path.join(x, 'lib')] + env.LIBPATH

    add_options_dir(additional_dirs, kw['env'])

    self.start_msg(kw['msg'], **kw)
    ret = None
    try:
        ret = self.run_build(*k, **kw)
    except self.errors.ConfigurationError:
        self.end_msg(kw['errmsg'], 'YELLOW', **kw)
        if Logs.verbose > 1:
            raise
        else:
            self.fatal('The configuration failed')
    else:
        kw['success'] = ret
        # success! time for brandy
        add_options_dir(additional_dirs, self.env)

    ret = self.post_check(*k, **kw)
    if not ret:
        self.end_msg(kw['errmsg'], 'YELLOW', **kw)
        self.fatal('The configuration failed %r' % ret)
    else:
        self.end_msg(self.ret_msg(kw['okmsg'], kw), **kw)
    return ret

@conf
def CHECK_LIBRARY_SUPPORT(conf, rpath=False, version_script=False, msg=None):
    '''see if the platform supports building libraries'''

    if msg is None:
        if rpath:
            msg = "rpath library support"
        else:
            msg = "building library support"

    def build(bld):
        lib_node = bld.srcnode.make_node('libdir/liblc1.c')
        lib_node.parent.mkdir()
        lib_node.write('int lib_func(void) { return 42; }\n', 'w')
        main_node = bld.srcnode.make_node('main.c')
        main_node.write('int main(void) {return !(lib_func() == 42);}', 'w')
        linkflags = []
        if version_script:
            script = bld.srcnode.make_node('ldscript')
            script.write('TEST_1.0A2 { global: *; };\n', 'w')
            linkflags.append('-Wl,--version-script=%s' % script.abspath())
        bld(features='c cshlib', source=lib_node, target='lib1', linkflags=linkflags, name='lib1')
        o = bld(features='c cprogram', source=main_node, target='prog1', uselib_local='lib1')
        if rpath:
            o.rpath = [lib_node.parent.abspath()]
        def run_app(self):
             args = conf.SAMBA_CROSS_ARGS(msg=msg)
             env = dict(os.environ)
             env['LD_LIBRARY_PATH'] = self.inputs[0].parent.abspath() + os.pathsep + env.get('LD_LIBRARY_PATH', '')
             self.generator.bld.cmd_and_log([self.inputs[0].abspath()] + args, env=env)
        o.post()
        bld(rule=run_app, source=o.link_task.outputs[0])

    # ok, so it builds
    try:
        conf.check(build_fun=build, msg='Checking for %s' % msg)
    except conf.errors.ConfigurationError:
        return False
    return True

@conf
def CHECK_NEED_LC(conf, msg):
    '''check if we need -lc'''
    def build(bld):
        lib_node = bld.srcnode.make_node('libdir/liblc1.c')
        lib_node.parent.mkdir()
        lib_node.write('#include <stdio.h>\nint lib_func(void) { FILE *f = fopen("foo", "r");}\n', 'w')
        bld(features='c cshlib', source=[lib_node], linkflags=conf.env.EXTRA_LDFLAGS, target='liblc')
    try:
        conf.check(build_fun=build, msg=msg, okmsg='-lc is unnecessary', errmsg='-lc is necessary')
    except conf.errors.ConfigurationError:
        return False
    return True

# already implemented on "waf -v"
def order(bld, tgt_list):
    return True
Build.BuildContext.check_group_ordering = order

@conf
def CHECK_CFG(self, *k, **kw):
    if 'args' in kw:
        kw['args'] = shlex.split(kw['args'])
    if not 'mandatory' in kw:
        kw['mandatory'] = False
    kw['global_define'] = True
    return self.check_cfg(*k, **kw)
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def cmd_output(cmd, **kw):

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    silent = False
    if 'silent' in kw:
        silent = kw['silent']
        del(kw['silent'])

    if 'e' in kw:
        tmp = kw['e']
        del(kw['e'])
        kw['env'] = tmp

    kw['shell'] = isinstance(cmd, str)
    kw['stdout'] = Utils.subprocess.PIPE
    if silent:
        kw['stderr'] = Utils.subprocess.PIPE

    try:
        p = Utils.subprocess.Popen(cmd, **kw)
        output = p.communicate()[0]
    except OSError as e:
        raise ValueError(str(e))

    if p.returncode:
        if not silent:
            msg = "command execution failed: %s -> %r" % (cmd, str(output))
            raise ValueError(msg)
        output = ''
    return output
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Utils.cmd_output = cmd_output
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@TaskGen.feature('c', 'cxx', 'd')
@TaskGen.before('apply_incpaths', 'propagate_uselib_vars')
@TaskGen.after('apply_link', 'process_source')
def apply_uselib_local(self):
    """
    process the uselib_local attribute
    execute after apply_link because of the execution order set on 'link_task'
    """
    env = self.env
    from waflib.Tools.ccroot import stlink_task

    # 1. the case of the libs defined in the project (visit ancestors first)
    # the ancestors external libraries (uselib) will be prepended
    self.uselib = self.to_list(getattr(self, 'uselib', []))
    self.includes = self.to_list(getattr(self, 'includes', []))
    names = self.to_list(getattr(self, 'uselib_local', []))
    get = self.bld.get_tgen_by_name
    seen = set()
    seen_uselib = set()
    tmp = Utils.deque(names) # consume a copy of the list of names
    if tmp:
        if Logs.verbose:
            Logs.warn('compat: "uselib_local" is deprecated, replace by "use"')
    while tmp:
        lib_name = tmp.popleft()
        # visit dependencies only once
        if lib_name in seen:
            continue

        y = get(lib_name)
        y.post()
        seen.add(lib_name)

        # object has ancestors to process (shared libraries): add them to the end of the list
        if getattr(y, 'uselib_local', None):
            for x in self.to_list(getattr(y, 'uselib_local', [])):
                obj = get(x)
                obj.post()
                if getattr(obj, 'link_task', None):
                    if not isinstance(obj.link_task, stlink_task):
                        tmp.append(x)

        # link task and flags
        if getattr(y, 'link_task', None):

            link_name = y.target[y.target.rfind(os.sep) + 1:]
            if isinstance(y.link_task, stlink_task):
                env.append_value('STLIB', [link_name])
            else:
                # some linkers can link against programs
                env.append_value('LIB', [link_name])

            # the order
            self.link_task.set_run_after(y.link_task)

            # for the recompilation
            self.link_task.dep_nodes += y.link_task.outputs

            # add the link path too
            tmp_path = y.link_task.outputs[0].parent.bldpath()
            if not tmp_path in env['LIBPATH']:
                env.prepend_value('LIBPATH', [tmp_path])

        # add ancestors uselib too - but only propagate those that have no staticlib defined
        for v in self.to_list(getattr(y, 'uselib', [])):
            if v not in seen_uselib:
                seen_uselib.add(v)
                if not env['STLIB_' + v]:
                    if not v in self.uselib:
                        self.uselib.insert(0, v)

        # if the library task generator provides 'export_includes', add to the include path
        # the export_includes must be a list of paths relative to the other library
        if getattr(y, 'export_includes', None):
            self.includes.extend(y.to_incnodes(y.export_includes))

@TaskGen.feature('cprogram', 'cxxprogram', 'cstlib', 'cxxstlib', 'cshlib', 'cxxshlib', 'dprogram', 'dstlib', 'dshlib')
@TaskGen.after('apply_link')
def apply_objdeps(self):
    "add the .o files produced by some other object files in the same manner as uselib_local"
    names = getattr(self, 'add_objects', [])
    if not names:
        return
    names = self.to_list(names)

    get = self.bld.get_tgen_by_name
    seen = []
    while names:
        x = names[0]

        # visit dependencies only once
        if x in seen:
            names = names[1:]
            continue

        # object does not exist ?
        y = get(x)

        # object has ancestors to process first ? update the list of names
        if getattr(y, 'add_objects', None):
            added = 0
            lst = y.to_list(y.add_objects)
            lst.reverse()
            for u in lst:
                if u in seen:
                    continue
                added = 1
                names = [u]+names
            if added:
                continue # list of names modified, loop

        # safe to process the current object
        y.post()
        seen.append(x)

        for t in getattr(y, 'compiled_tasks', []):
            self.link_task.inputs.extend(t.outputs)

@TaskGen.after('apply_link')
def process_obj_files(self):
    if not hasattr(self, 'obj_files'):
        return
    for x in self.obj_files:
        node = self.path.find_resource(x)
        self.link_task.inputs.append(node)

@TaskGen.taskgen_method
def add_obj_file(self, file):
    """Small example on how to link object files as if they were source
    obj = bld.create_obj('cc')
    obj.add_obj_file('foo.o')"""
    if not hasattr(self, 'obj_files'):
        self.obj_files = []
    if not 'process_obj_files' in self.meths:
        self.meths.append('process_obj_files')
    self.obj_files.append(file)