import os
import os.path
import re
+import sys
+import subprocess
import SCons.Action
import SCons.Builder
import fixes
+import source_list
def quietCommandLines(env):
# Quiet command lines
# TODO: handle import statements with multiple modules
# TODO: handle from import statements
-import_re = re.compile(r'^import\s+(\S+)$', re.M)
+import_re = re.compile(r'^\s*import\s+(\S+)\s*$', re.M)
def python_scan(node, env, path):
# http://www.scons.org/doc/0.98.5/HTML/scons-user/c2781.html#AEN2789
if os.path.exists(file):
results.append(env.File(file))
break
+ #print node, map(str, results)
return results
python_scanner = SCons.Scanner.Scanner(function = python_scan, skeys = ['.py'])
env.AddMethod(code_generate, 'CodeGenerate')
+def _pkg_check_modules(env, name, modules):
+ '''Simple wrapper for pkg-config.'''
+
+ env['HAVE_' + name] = False
+
+ # For backwards compatability
+ env[name.lower()] = False
+
+ if env['platform'] == 'windows':
+ return
+
+ if not env.Detect('pkg-config'):
+ return
+
+ if subprocess.call(["pkg-config", "--exists", ' '.join(modules)]) != 0:
+ return
+
+ # Strip version expressions from modules
+ modules = [module.split(' ', 1)[0] for module in modules]
+
+ # Other flags may affect the compilation of unrelated targets, so store
+ # them with a prefix, (e.g., XXX_CFLAGS, XXX_LIBS, etc)
+ try:
+ flags = env.ParseFlags('!pkg-config --cflags --libs ' + ' '.join(modules))
+ except OSError:
+ return
+ prefix = name + '_'
+ for flag_name, flag_value in flags.iteritems():
+ assert '_' not in flag_name
+ env[prefix + flag_name] = flag_value
+
+ env['HAVE_' + name] = True
+
+def pkg_check_modules(env, name, modules):
+
+ sys.stdout.write('Checking for %s (%s)...' % (name, ' '.join(modules)))
+ _pkg_check_modules(env, name, modules)
+ result = env['HAVE_' + name]
+ sys.stdout.write(' %s\n' % ['no', 'yes'][int(bool(result))])
+
+ # XXX: For backwards compatability
+ env[name.lower()] = result
+
+
+def pkg_use_modules(env, names):
+ '''Search for all environment flags that match NAME_FOO and append them to
+ the FOO environment variable.'''
+
+ names = env.Flatten(names)
+
+ for name in names:
+ prefix = name + '_'
+
+ if not 'HAVE_' + name in env:
+ raise Exception('Attempt to use unknown module %s' % name)
+
+ if not env['HAVE_' + name]:
+ raise Exception('Attempt to use unavailable module %s' % name)
+
+ flags = {}
+ for flag_name, flag_value in env.Dictionary().iteritems():
+ if flag_name.startswith(prefix):
+ flag_name = flag_name[len(prefix):]
+ if '_' not in flag_name:
+ flags[flag_name] = flag_value
+ if flags:
+ env.MergeFlags(flags)
+
+
+def createPkgConfigMethods(env):
+ env.AddMethod(pkg_check_modules, 'PkgCheckModules')
+ env.AddMethod(pkg_use_modules, 'PkgUseModules')
+
+
+def parse_source_list(env, filename, names=None):
+ # parse the source list file
+ parser = source_list.SourceListParser()
+ src = env.File(filename).srcnode()
+
+ cur_srcdir = env.Dir('.').srcnode().abspath
+ top_srcdir = env.Dir('#').abspath
+ top_builddir = os.path.join(top_srcdir, env['build_dir'])
+
+ # Normalize everything to / slashes
+ cur_srcdir = cur_srcdir.replace('\\', '/')
+ top_srcdir = top_srcdir.replace('\\', '/')
+ top_builddir = top_builddir.replace('\\', '/')
+
+ # Populate the symbol table of the Makefile parser.
+ parser.add_symbol('top_srcdir', top_srcdir)
+ parser.add_symbol('top_builddir', top_builddir)
+
+ sym_table = parser.parse(src.abspath)
+
+ if names:
+ if isinstance(names, basestring):
+ names = [names]
+
+ symbols = names
+ else:
+ symbols = sym_table.keys()
+
+ # convert the symbol table to source lists
+ src_lists = {}
+ for sym in symbols:
+ val = sym_table[sym]
+ srcs = []
+ for f in val.split():
+ if f:
+ # Process source paths
+ if f.startswith(top_builddir + '/src'):
+ # Automake puts build output on a `src` subdirectory, but
+ # SCons does not, so strip it here.
+ f = top_builddir + f[len(top_builddir + '/src'):]
+ if f.startswith(cur_srcdir + '/'):
+ # Prefer relative source paths, as absolute files tend to
+ # cause duplicate actions.
+ f = f[len(cur_srcdir + '/'):]
+ srcs.append(f)
+
+ src_lists[sym] = srcs
+
+ # if names are given, concatenate the lists
+ if names:
+ srcs = []
+ for name in names:
+ srcs.extend(src_lists[name])
+
+ return srcs
+ else:
+ return src_lists
+
+def createParseSourceListMethod(env):
+ env.AddMethod(parse_source_list, 'ParseSourceList')
+
+
def generate(env):
"""Common environment generation code"""
- if env.get('quiet', True):
+ verbose = env.get('verbose', False) or not env.get('quiet', True)
+ if not verbose:
quietCommandLines(env)
# Custom builders and methods
createConvenienceLibBuilder(env)
createCodeGenerateMethod(env)
+ createPkgConfigMethods(env)
+ createParseSourceListMethod(env)
# for debugging
#print env.Dump()
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