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#!/usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2005-2015 (ita)
"base for all c/c++ programs and libraries"
import os, sys, re
from waflib import Utils, Build, Errors
from waflib.Configure import conf
def get_extensions(lst):
"""
:param lst: files to process
:list lst: list of string or :py:class:`waflib.Node.Node`
:return: list of file extensions
:rtype: list of string
"""
ret = []
for x in Utils.to_list(lst):
try:
if not isinstance(x, str):
x = x.name
ret.append(x[x.rfind('.') + 1:])
except Exception:
pass
return ret
def sniff_features(**kw):
"""
Look at the source files and return the features for a task generator (mainly cc and cxx)::
snif_features(source=['foo.c', 'foo.cxx'], type='shlib')
# returns ['cxx', 'c', 'cxxshlib', 'cshlib']
:param source: source files to process
:type source: list of string or :py:class:`waflib.Node.Node`
:param type: object type in *program*, *shlib* or *stlib*
:type type: string
:return: the list of features for a task generator processing the source files
:rtype: list of string
"""
exts = get_extensions(kw['source'])
type = kw['_type']
feats = []
# watch the order, cxx will have the precedence
for x in 'cxx cpp c++ cc C'.split():
if x in exts:
feats.append('cxx')
break
if 'c' in exts or 'vala' in exts:
feats.append('c')
for x in 'f f90 F F90 for FOR'.split():
if x in exts:
feats.append('fc')
break
if 'd' in exts:
feats.append('d')
if 'java' in exts:
feats.append('java')
return 'java'
if type in ('program', 'shlib', 'stlib'):
will_link = False
for x in feats:
if x in ('cxx', 'd', 'fc', 'c'):
feats.append(x + type)
will_link = True
if not will_link and not kw.get('features', []):
raise Errors.WafError('Cannot link from %r, try passing eg: features="cprogram"?' % kw)
return feats
def set_features(kw, _type):
kw['_type'] = _type
kw['features'] = Utils.to_list(kw.get('features', [])) + Utils.to_list(sniff_features(**kw))
@conf
def program(bld, *k, **kw):
"""
Alias for creating programs by looking at the file extensions::
def build(bld):
bld.program(source='foo.c', target='app')
# equivalent to:
# bld(features='c cprogram', source='foo.c', target='app')
"""
set_features(kw, 'program')
return bld(*k, **kw)
@conf
def shlib(bld, *k, **kw):
"""
Alias for creating shared libraries by looking at the file extensions::
def build(bld):
bld.shlib(source='foo.c', target='app')
# equivalent to:
# bld(features='c cshlib', source='foo.c', target='app')
"""
set_features(kw, 'shlib')
return bld(*k, **kw)
@conf
def stlib(bld, *k, **kw):
"""
Alias for creating static libraries by looking at the file extensions::
def build(bld):
bld.stlib(source='foo.cpp', target='app')
# equivalent to:
# bld(features='cxx cxxstlib', source='foo.cpp', target='app')
"""
set_features(kw, 'stlib')
return bld(*k, **kw)
@conf
def objects(bld, *k, **kw):
"""
Alias for creating object files by looking at the file extensions::
def build(bld):
bld.objects(source='foo.c', target='app')
# equivalent to:
# bld(features='c', source='foo.c', target='app')
"""
set_features(kw, 'objects')
return bld(*k, **kw)
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