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Update tutorial.rst to clarify that the env attribute is shared between the cnf and bld parameters to their respective methods.

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Dotan Cohen 2020-09-06 11:44:16 +00:00 committed by Thomas Nagy
parent 2831c75093
commit 6fba8d3742
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docs/sphinx/tutorial.rst
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@ -62,7 +62,7 @@ by using the *${}* symbol, which reads the values from the attribute bld.env::
bld(rule='echo ${MESSAGE}', always=True) bld(rule='echo ${MESSAGE}', always=True)
The bld object is an instance of :py:class:`waflib.Build.BuildContext`, its *env* attribute is an instance :py:class:`waflib.ConfigSet.ConfigSet`. The bld object is an instance of :py:class:`waflib.Build.BuildContext`, its *env* attribute is an instance :py:class:`waflib.ConfigSet.ConfigSet`.
The values are set in this object to be shared/stored/loaded easily. Here is how to do the same thing by sharing data between the configuration and build:: This object is also accessible as an attribute on the `configure()` method's `cnf` parameter. Therefore, values can be shared/stored/loaded easily:
def configure(cnf): def configure(cnf):
cnf.env.MESSAGE = 'Hello, world!' cnf.env.MESSAGE = 'Hello, world!'