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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Tool to extend c_config.check_cfg()
__author__ = __maintainer__ = "Jérôme Carretero <cJ-waf@zougloub.eu>"
__copyright__ = "Jérôme Carretero, 2014"
"""
This tool allows to work around the absence of ``*-config`` programs
on systems, by keeping the same clean configuration syntax but inferring
values or permitting their modification via the options interface.
Note that pkg-config can also support setting ``PKG_CONFIG_PATH``,
so you can put custom files in a folder containing new .pc files.
This tool could also be implemented by taking advantage of this fact.
Usage::
def options(opt):
opt.load('c_config_alt')
opt.add_package_option('package')
def configure(cfg):
conf.load('c_config_alt')
conf.check_cfg(...)
Known issues:
- Behavior with different build contexts...
"""
import os
import functools
from waflib import Configure, Options, Errors
def name_to_dest(x):
return x.lower().replace('-', '_')
def options(opt):
def x(opt, param):
dest = name_to_dest(param)
gr = opt.get_option_group("configure options")
gr.add_option('--%s-root' % dest,
help="path containing include and lib subfolders for %s" \
% param,
)
opt.add_package_option = functools.partial(x, opt)
check_cfg_old = getattr(Configure.ConfigurationContext, 'check_cfg')
@Configure.conf
def check_cfg(conf, *k, **kw):
if k:
lst = k[0].split()
kw['package'] = lst[0]
kw['args'] = ' '.join(lst[1:])
if not 'package' in kw:
return check_cfg_old(conf, **kw)
package = kw['package']
package_lo = name_to_dest(package)
package_hi = package.upper().replace('-', '_') # TODO FIXME
package_hi = kw.get('uselib_store', package_hi)
def check_folder(path, name):
try:
assert os.path.isdir(path)
except AssertionError:
raise Errors.ConfigurationError(
"%s_%s (%s) is not a folder!" \
% (package_lo, name, path))
return path
root = getattr(Options.options, '%s_root' % package_lo, None)
if root is None:
return check_cfg_old(conf, **kw)
else:
def add_manual_var(k, v):
conf.start_msg('Adding for %s a manual var' % (package))
conf.env["%s_%s" % (k, package_hi)] = v
conf.end_msg("%s = %s" % (k, v))
check_folder(root, 'root')
pkg_inc = check_folder(os.path.join(root, "include"), 'inc')
add_manual_var('INCLUDES', [pkg_inc])
pkg_lib = check_folder(os.path.join(root, "lib"), 'libpath')
add_manual_var('LIBPATH', [pkg_lib])
add_manual_var('LIB', [package])
for x in kw.get('manual_deps', []):
for k, v in sorted(conf.env.get_merged_dict().items()):
if k.endswith('_%s' % x):
k = k.replace('_%s' % x, '')
conf.start_msg('Adding for %s a manual dep' \
%(package))
conf.env["%s_%s" % (k, package_hi)] += v
conf.end_msg('%s += %s' % (k, v))
return True
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