diff options
Diffstat (limited to 'Configure.py')
| -rw-r--r-- | Configure.py | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/Configure.py b/Configure.py index 5762eb6..e733394 100644 --- a/Configure.py +++ b/Configure.py @@ -508,23 +508,27 @@ def find_binary(self, filenames, exts, paths): @conf def run_build(self, *k, **kw): """ - Create a temporary build context to execute a build. A reference to that build - context is kept on self.test_bld for debugging purposes, and you should not rely - on it too much (read the note on the cache below). - The parameters given in the arguments to this function are passed as arguments for - a single task generator created in the build. Only three parameters are obligatory: + Create a temporary build context to execute a build. A temporary reference to that build + context is kept on self.test_bld for debugging purposes. + The arguments to this function are passed to a single task generator for that build. + Only three parameters are mandatory: :param features: features to pass to a task generator created in the build :type features: list of string :param compile_filename: file to create for the compilation (default: *test.c*) :type compile_filename: string - :param code: code to write in the filename to compile + :param code: input file contents :type code: string - Though this function returns *0* by default, the build may set an attribute named *retval* on the + Though this function returns *0* by default, the build may bind attribute named *retval* on the build context object to return a particular value. See :py:func:`waflib.Tools.c_config.test_exec_fun` for example. - This function also features a cache which can be enabled by the following option:: + The temporary builds creates a temporary folder; the name of that folder is calculated + by hashing input arguments to this function, with the exception of :py:class:`waflib.ConfigSet.ConfigSet` + objects which are used for both reading and writing values. + + This function also features a cache which is disabled by default; that cache relies + on the hash value calculated as indicated above:: def options(opt): opt.add_option('--confcache', dest='confcache', default=0, @@ -538,7 +542,10 @@ def run_build(self, *k, **kw): buf = [] for key in sorted(kw.keys()): v = kw[key] - if hasattr(v, '__call__'): + if isinstance(v, ConfigSet.ConfigSet): + # values are being written to, so they are excluded from contributing to the hash + continue + elif hasattr(v, '__call__'): buf.append(Utils.h_fun(v)) else: buf.append(str(v)) |