ref: fa6f6aa65a49d8660c0ca874c7af375932fa6bae
dir: /waflib/Tools/python.py/
#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! http://waf.googlecode.com/git/docs/wafbook/single.html#_obtaining_the_waf_file
import os,sys
from waflib import Utils,Options,Errors,Logs
from waflib.TaskGen import extension,before_method,after_method,feature
from waflib.Configure import conf
FRAG='''
#include <Python.h>
#ifdef __cplusplus
extern "C" {
#endif
void Py_Initialize(void);
void Py_Finalize(void);
#ifdef __cplusplus
}
#endif
int main(int argc, char **argv)
{
(void)argc; (void)argv;
Py_Initialize();
Py_Finalize();
return 0;
}
'''
INST='''
import sys, py_compile
py_compile.compile(sys.argv[1], sys.argv[2], sys.argv[3])
'''
DISTUTILS_IMP=['from distutils.sysconfig import get_config_var, get_python_lib']
@extension('.py')
def process_py(self,node):
try:
if not self.bld.is_install:
return
except AttributeError:
return
try:
if not self.install_path:
return
except AttributeError:
self.install_path='${PYTHONDIR}'
def inst_py(ctx):
install_from=getattr(self,'install_from',None)
if install_from:
install_from=self.path.find_dir(install_from)
install_pyfile(self,node,install_from)
self.bld.add_post_fun(inst_py)
def install_pyfile(self,node,install_from=None):
from_node=install_from or node.parent
tsk=self.bld.install_as(self.install_path+'/'+node.path_from(from_node),node,postpone=False)
path=tsk.get_install_path()
if self.bld.is_install<0:
Logs.info("+ removing byte compiled python files")
for x in'co':
try:
os.remove(path+x)
except OSError:
pass
if self.bld.is_install>0:
try:
st1=os.stat(path)
except OSError:
Logs.error('The python file is missing, this should not happen')
for x in['c','o']:
do_inst=self.env['PY'+x.upper()]
try:
st2=os.stat(path+x)
except OSError:
pass
else:
if st1.st_mtime<=st2.st_mtime:
do_inst=False
if do_inst:
lst=(x=='o')and[self.env['PYFLAGS_OPT']]or[]
(a,b,c)=(path,path+x,tsk.get_install_path(destdir=False)+x)
argv=self.env['PYTHON']+lst+['-c',INST,a,b,c]
Logs.info('+ byte compiling %r'%(path+x))
env=self.env.env or None
ret=Utils.subprocess.Popen(argv,env=env).wait()
if ret:
raise Errors.WafError('py%s compilation failed %r'%(x,path))
@feature('py')
def feature_py(self):
pass
@feature('pyext')
@before_method('propagate_uselib_vars','apply_link')
@after_method('apply_bundle')
def init_pyext(self):
self.uselib=self.to_list(getattr(self,'uselib',[]))
if not'PYEXT'in self.uselib:
self.uselib.append('PYEXT')
self.env.cshlib_PATTERN=self.env.cxxshlib_PATTERN=self.env.macbundle_PATTERN=self.env.pyext_PATTERN
self.env.fcshlib_PATTERN=self.env.dshlib_PATTERN=self.env.pyext_PATTERN
try:
if not self.install_path:
return
except AttributeError:
self.install_path='${PYTHONARCHDIR}'
@feature('pyext')
@before_method('apply_link','apply_bundle')
def set_bundle(self):
if Utils.unversioned_sys_platform()=='darwin':
self.mac_bundle=True
@before_method('propagate_uselib_vars')
@feature('pyembed')
def init_pyembed(self):
self.uselib=self.to_list(getattr(self,'uselib',[]))
if not'PYEMBED'in self.uselib:
self.uselib.append('PYEMBED')
@conf
def get_python_variables(self,variables,imports=None):
if not imports:
try:
imports=self.python_imports
except AttributeError:
imports=DISTUTILS_IMP
program=list(imports)
program.append('')
for v in variables:
program.append("print(repr(%s))"%v)
os_env=dict(os.environ)
try:
del os_env['MACOSX_DEPLOYMENT_TARGET']
except KeyError:
pass
try:
out=self.cmd_and_log(self.env.PYTHON+['-c','\n'.join(program)],env=os_env)
except Errors.WafError:
self.fatal('The distutils module is unusable: install "python-devel"?')
self.to_log(out)
return_values=[]
for s in out.split('\n'):
s=s.strip()
if not s:
continue
if s=='None':
return_values.append(None)
elif(s[0]=="'"and s[-1]=="'")or(s[0]=='"'and s[-1]=='"'):
return_values.append(eval(s))
elif s[0].isdigit():
return_values.append(int(s))
else:break
return return_values
@conf
def check_python_headers(conf):
env=conf.env
if not env['CC_NAME']and not env['CXX_NAME']:
conf.fatal('load a compiler first (gcc, g++, ..)')
if not env['PYTHON_VERSION']:
conf.check_python_version()
pybin=conf.env.PYTHON
if not pybin:
conf.fatal('Could not find the python executable')
v='prefix SO LDFLAGS LIBDIR LIBPL INCLUDEPY Py_ENABLE_SHARED MACOSX_DEPLOYMENT_TARGET LDSHARED CFLAGS'.split()
try:
lst=conf.get_python_variables(["get_config_var('%s') or ''"%x for x in v])
except RuntimeError:
conf.fatal("Python development headers not found (-v for details).")
vals=['%s = %r'%(x,y)for(x,y)in zip(v,lst)]
conf.to_log("Configuration returned from %r:\n%r\n"%(pybin,'\n'.join(vals)))
dct=dict(zip(v,lst))
x='MACOSX_DEPLOYMENT_TARGET'
if dct[x]:
conf.env[x]=conf.environ[x]=dct[x]
env['pyext_PATTERN']='%s'+dct['SO']
all_flags=dct['LDFLAGS']+' '+dct['CFLAGS']
conf.parse_flags(all_flags,'PYEMBED')
all_flags=dct['LDFLAGS']+' '+dct['LDSHARED']+' '+dct['CFLAGS']
conf.parse_flags(all_flags,'PYEXT')
result=None
for name in('python'+env['PYTHON_VERSION'],'python'+env['PYTHON_VERSION']+'m','python'+env['PYTHON_VERSION'].replace('.','')):
if not result and env['LIBPATH_PYEMBED']:
path=env['LIBPATH_PYEMBED']
conf.to_log("\n\n# Trying default LIBPATH_PYEMBED: %r\n"%path)
result=conf.check(lib=name,uselib='PYEMBED',libpath=path,mandatory=False,msg='Checking for library %s in LIBPATH_PYEMBED'%name)
if not result and dct['LIBDIR']:
path=[dct['LIBDIR']]
conf.to_log("\n\n# try again with -L$python_LIBDIR: %r\n"%path)
result=conf.check(lib=name,uselib='PYEMBED',libpath=path,mandatory=False,msg='Checking for library %s in LIBDIR'%name)
if not result and dct['LIBPL']:
path=[dct['LIBPL']]
conf.to_log("\n\n# try again with -L$python_LIBPL (some systems don't install the python library in $prefix/lib)\n")
result=conf.check(lib=name,uselib='PYEMBED',libpath=path,mandatory=False,msg='Checking for library %s in python_LIBPL'%name)
if not result:
path=[os.path.join(dct['prefix'],"libs")]
conf.to_log("\n\n# try again with -L$prefix/libs, and pythonXY name rather than pythonX.Y (win32)\n")
result=conf.check(lib=name,uselib='PYEMBED',libpath=path,mandatory=False,msg='Checking for library %s in $prefix/libs'%name)
if result:
break
if result:
env['LIBPATH_PYEMBED']=path
env.append_value('LIB_PYEMBED',[name])
else:
conf.to_log("\n\n### LIB NOT FOUND\n")
if(Utils.is_win32 or sys.platform.startswith('os2')or dct['Py_ENABLE_SHARED']):
env['LIBPATH_PYEXT']=env['LIBPATH_PYEMBED']
env['LIB_PYEXT']=env['LIB_PYEMBED']
num='.'.join(env['PYTHON_VERSION'].split('.')[:2])
conf.find_program([''.join(pybin)+'-config','python%s-config'%num,'python-config-%s'%num,'python%sm-config'%num],var='PYTHON_CONFIG',mandatory=False)
includes=[]
if conf.env.PYTHON_CONFIG:
for incstr in conf.cmd_and_log([conf.env.PYTHON_CONFIG,'--includes']).strip().split():
if(incstr.startswith('-I')or incstr.startswith('/I')):
incstr=incstr[2:]
if incstr not in includes:
includes.append(incstr)
conf.to_log("Include path for Python extensions (found via python-config --includes): %r\n"%(includes,))
env['INCLUDES_PYEXT']=includes
env['INCLUDES_PYEMBED']=includes
else:
conf.to_log("Include path for Python extensions ""(found via distutils module): %r\n"%(dct['INCLUDEPY'],))
env['INCLUDES_PYEXT']=[dct['INCLUDEPY']]
env['INCLUDES_PYEMBED']=[dct['INCLUDEPY']]
if env['CC_NAME']=='gcc':
env.append_value('CFLAGS_PYEMBED',['-fno-strict-aliasing'])
env.append_value('CFLAGS_PYEXT',['-fno-strict-aliasing'])
if env['CXX_NAME']=='gcc':
env.append_value('CXXFLAGS_PYEMBED',['-fno-strict-aliasing'])
env.append_value('CXXFLAGS_PYEXT',['-fno-strict-aliasing'])
if env.CC_NAME=="msvc":
from distutils.msvccompiler import MSVCCompiler
dist_compiler=MSVCCompiler()
dist_compiler.initialize()
env.append_value('CFLAGS_PYEXT',dist_compiler.compile_options)
env.append_value('CXXFLAGS_PYEXT',dist_compiler.compile_options)
env.append_value('LINKFLAGS_PYEXT',dist_compiler.ldflags_shared)
try:
conf.check(header_name='Python.h',define_name='HAVE_PYTHON_H',uselib='PYEMBED',fragment=FRAG,errmsg=':-(')
except conf.errors.ConfigurationError:
xx=conf.env.CXX_NAME and'cxx'or'c'
flags=['--cflags','--libs','--ldflags']
for f in flags:
conf.check_cfg(msg='Asking python-config for pyembed %s flags'%f,path=conf.env.PYTHON_CONFIG,package='',uselib_store='PYEMBED',args=[f])
conf.check(header_name='Python.h',define_name='HAVE_PYTHON_H',msg='Getting pyembed flags from python-config',fragment=FRAG,errmsg='Could not build a python embedded interpreter',features='%s %sprogram pyembed'%(xx,xx))
for f in flags:
conf.check_cfg(msg='Asking python-config for pyext %s flags'%f,path=conf.env.PYTHON_CONFIG,package='',uselib_store='PYEXT',args=[f])
conf.check(header_name='Python.h',define_name='HAVE_PYTHON_H',msg='Getting pyext flags from python-config',features='%s %sshlib pyext'%(xx,xx),fragment=FRAG,errmsg='Could not build python extensions')
@conf
def check_python_version(conf,minver=None):
assert minver is None or isinstance(minver,tuple)
pybin=conf.env['PYTHON']
if not pybin:
conf.fatal('could not find the python executable')
cmd=pybin+['-c','import sys\nfor x in sys.version_info: print(str(x))']
Logs.debug('python: Running python command %r'%cmd)
lines=conf.cmd_and_log(cmd).split()
assert len(lines)==5,"found %i lines, expected 5: %r"%(len(lines),lines)
pyver_tuple=(int(lines[0]),int(lines[1]),int(lines[2]),lines[3],int(lines[4]))
result=(minver is None)or(pyver_tuple>=minver)
if result:
pyver='.'.join([str(x)for x in pyver_tuple[:2]])
conf.env['PYTHON_VERSION']=pyver
if'PYTHONDIR'in conf.environ:
pydir=conf.environ['PYTHONDIR']
else:
if Utils.is_win32:
(python_LIBDEST,pydir)=conf.get_python_variables(["get_config_var('LIBDEST') or ''","get_python_lib(standard_lib=0, prefix=%r) or ''"%conf.env['PREFIX']])
else:
python_LIBDEST=None
(pydir,)=conf.get_python_variables(["get_python_lib(standard_lib=0, prefix=%r) or ''"%conf.env['PREFIX']])
if python_LIBDEST is None:
if conf.env['LIBDIR']:
python_LIBDEST=os.path.join(conf.env['LIBDIR'],"python"+pyver)
else:
python_LIBDEST=os.path.join(conf.env['PREFIX'],"lib","python"+pyver)
if'PYTHONARCHDIR'in conf.environ:
pyarchdir=conf.environ['PYTHONARCHDIR']
else:
(pyarchdir,)=conf.get_python_variables(["get_python_lib(plat_specific=1, standard_lib=0, prefix=%r) or ''"%conf.env['PREFIX']])
if not pyarchdir:
pyarchdir=pydir
if hasattr(conf,'define'):
conf.define('PYTHONDIR',pydir)
conf.define('PYTHONARCHDIR',pyarchdir)
conf.env['PYTHONDIR']=pydir
conf.env['PYTHONARCHDIR']=pyarchdir
pyver_full='.'.join(map(str,pyver_tuple[:3]))
if minver is None:
conf.msg('Checking for python version',pyver_full)
else:
minver_str='.'.join(map(str,minver))
conf.msg('Checking for python version',pyver_tuple,">= %s"%(minver_str,)and'GREEN'or'YELLOW')
if not result:
conf.fatal('The python version is too old, expecting %r'%(minver,))
PYTHON_MODULE_TEMPLATE='''
import %s as current_module
version = getattr(current_module, '__version__', None)
if version is not None:
print(str(version))
else:
print('unknown version')
'''
@conf
def check_python_module(conf,module_name,condition=''):
msg='Python module %s'%module_name
if condition:
msg='%s (%s)'%(msg,condition)
conf.start_msg(msg)
try:
ret=conf.cmd_and_log(conf.env['PYTHON']+['-c',PYTHON_MODULE_TEMPLATE%module_name])
except Exception:
conf.end_msg(False)
conf.fatal('Could not find the python module %r'%module_name)
ret=ret.strip()
if condition:
conf.end_msg(ret)
if ret=='unknown version':
conf.fatal('Could not check the %s version'%module_name)
from distutils.version import LooseVersion
def num(*k):
if isinstance(k[0],int):
return LooseVersion('.'.join([str(x)for x in k]))
else:
return LooseVersion(k[0])
d={'num':num,'ver':LooseVersion(ret)}
ev=eval(condition,{},d)
if not ev:
conf.fatal('The %s version does not satisfy the requirements'%module_name)
else:
if ret=='unknown version':
conf.end_msg(True)
else:
conf.end_msg(ret)
def configure(conf):
try:
conf.find_program('python',var='PYTHON')
except conf.errors.ConfigurationError:
Logs.warn("could not find a python executable, setting to sys.executable '%s'"%sys.executable)
conf.env.PYTHON=sys.executable
if conf.env.PYTHON!=sys.executable:
Logs.warn("python executable %r differs from system %r"%(conf.env.PYTHON,sys.executable))
conf.env.PYTHON=conf.cmd_to_list(conf.env.PYTHON)
v=conf.env
v['PYCMD']='"import sys, py_compile;py_compile.compile(sys.argv[1], sys.argv[2])"'
v['PYFLAGS']=''
v['PYFLAGS_OPT']='-O'
v['PYC']=getattr(Options.options,'pyc',1)
v['PYO']=getattr(Options.options,'pyo',1)
def options(opt):
opt.add_option('--nopyc',action='store_false',default=1,help='Do not install bytecode compiled .pyc files (configuration) [Default:install]',dest='pyc')
opt.add_option('--nopyo',action='store_false',default=1,help='Do not install optimised compiled .pyo files (configuration) [Default:install]',dest='pyo')