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-rw-r--r--documentation/poky-ref-manual/ref-classes.xml3
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diff --git a/documentation/poky-ref-manual/ref-classes.xml b/documentation/poky-ref-manual/ref-classes.xml
index 09b3161fb7..e2bf9fed99 100644
--- a/documentation/poky-ref-manual/ref-classes.xml
+++ b/documentation/poky-ref-manual/ref-classes.xml
@@ -567,6 +567,9 @@
567 <link linkend='var-BBCLASSEXTEND'><filename>BBCLASSEXTEND</filename></link> variable. 567 <link linkend='var-BBCLASSEXTEND'><filename>BBCLASSEXTEND</filename></link> variable.
568 When you do, the <link linkend='var-B'><filename>B</filename></link> variable must support the 568 When you do, the <link linkend='var-B'><filename>B</filename></link> variable must support the
569 recipe's ability to build variants in different working directories. 569 recipe's ability to build variants in different working directories.
570 Most autotools-based recipes support separating these directories.
571 The Yocto Project defaults to using separate directories for <filename>gcc</filename>
572 and some kernel recipes.
570 Alternatively, you can make sure that separate recipes exist that each 573 Alternatively, you can make sure that separate recipes exist that each
571 use the <filename>BBCLASSEXTEND</filename> variable to build each variant. 574 use the <filename>BBCLASSEXTEND</filename> variable to build each variant.
572 The separate recipes can inherit a single target recipe. 575 The separate recipes can inherit a single target recipe.