+
+if env['checksums']:
+ SetOption ('max_drift', 0)
+
+prefix = env['prefix']
+bindir = os.path.join (prefix, 'bin')
+sharedir = os.path.join (prefix, 'share')
+libdir = os.path.join (prefix, 'lib')
+localedir = os.path.join (sharedir, 'locale')
+sharedir_package = os.path.join (sharedir, package.name)
+sharedir_package_version = os.path.join (sharedir_package, version)
+lilypondprefix = sharedir_package_version
+
+# post-option environment-update
+env.Append (
+ srcdir = srcdir,
+
+ bindir = bindir,
+ sharedir = sharedir,
+ lilypond_datadir = sharedir_package,
+ local_lilypond_datadir = sharedir_package_version,
+ lilypondprefix = lilypondprefix,
+ sharedir_package = sharedir_package,
+ sharedir_package_version = sharedir_package_version,
+ )
+