cfg_altoptions.py (2825B)
1 #!/usr/bin/python 2 # -*- coding: utf-8 -*- 3 # Tool to extend c_config.check_cfg() 4 5 __author__ = __maintainer__ = "Jérôme Carretero <cJ-waf@zougloub.eu>" 6 __copyright__ = "Jérôme Carretero, 2014" 7 8 """ 9 10 This tool allows to work around the absence of ``*-config`` programs 11 on systems, by keeping the same clean configuration syntax but inferring 12 values or permitting their modification via the options interface. 13 14 Note that pkg-config can also support setting ``PKG_CONFIG_PATH``, 15 so you can put custom files in a folder containing new .pc files. 16 This tool could also be implemented by taking advantage of this fact. 17 18 Usage:: 19 20 def options(opt): 21 opt.load('c_config_alt') 22 opt.add_package_option('package') 23 24 def configure(cfg): 25 conf.load('c_config_alt') 26 conf.check_cfg(...) 27 28 Known issues: 29 30 - Behavior with different build contexts... 31 32 """ 33 34 import os 35 import functools 36 from waflib import Configure, Options, Errors 37 38 def name_to_dest(x): 39 return x.lower().replace('-', '_') 40 41 42 def options(opt): 43 def x(opt, param): 44 dest = name_to_dest(param) 45 gr = opt.get_option_group("configure options") 46 gr.add_option('--%s-root' % dest, 47 help="path containing include and lib subfolders for %s" \ 48 % param, 49 ) 50 51 opt.add_package_option = functools.partial(x, opt) 52 53 54 check_cfg_old = getattr(Configure.ConfigurationContext, 'check_cfg') 55 56 @Configure.conf 57 def check_cfg(conf, *k, **kw): 58 if k: 59 lst = k[0].split() 60 kw['package'] = lst[0] 61 kw['args'] = ' '.join(lst[1:]) 62 63 if not 'package' in kw: 64 return check_cfg_old(conf, **kw) 65 66 package = kw['package'] 67 68 package_lo = name_to_dest(package) 69 package_hi = package.upper().replace('-', '_') # TODO FIXME 70 package_hi = kw.get('uselib_store', package_hi) 71 72 def check_folder(path, name): 73 try: 74 assert os.path.isdir(path) 75 except AssertionError: 76 raise Errors.ConfigurationError( 77 "%s_%s (%s) is not a folder!" \ 78 % (package_lo, name, path)) 79 return path 80 81 root = getattr(Options.options, '%s_root' % package_lo, None) 82 83 if root is None: 84 return check_cfg_old(conf, **kw) 85 else: 86 def add_manual_var(k, v): 87 conf.start_msg('Adding for %s a manual var' % (package)) 88 conf.env["%s_%s" % (k, package_hi)] = v 89 conf.end_msg("%s = %s" % (k, v)) 90 91 92 check_folder(root, 'root') 93 94 pkg_inc = check_folder(os.path.join(root, "include"), 'inc') 95 add_manual_var('INCLUDES', [pkg_inc]) 96 pkg_lib = check_folder(os.path.join(root, "lib"), 'libpath') 97 add_manual_var('LIBPATH', [pkg_lib]) 98 add_manual_var('LIB', [package]) 99 100 for x in kw.get('manual_deps', []): 101 for k, v in sorted(conf.env.get_merged_dict().items()): 102 if k.endswith('_%s' % x): 103 k = k.replace('_%s' % x, '') 104 conf.start_msg('Adding for %s a manual dep' \ 105 %(package)) 106 conf.env["%s_%s" % (k, package_hi)] += v 107 conf.end_msg('%s += %s' % (k, v)) 108 109 return True 110