dev-manual: Edits to "Building Software from an External Source" section.
(From yocto-docs rev: 0fcc12bad0ac3020f8985000e77829fc58588031) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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It is important to know that the <filename>externalsrc.bbclass</filename> assumes that the
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source directory <filename>S</filename> and the Build Directory
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<ulink url='&YOCTO_DOCS_REF_URL;#var-B'><filename>B</filename></ulink>
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are different even though by default these directories are the same.
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are different even though these directories are the same by default.
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This assumption is important because it supports building different variants of the recipe
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by using the
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<ulink url='&YOCTO_DOCS_REF_URL;#var-BBCLASSEXTEND'><filename>BBCLASSEXTEND</filename></ulink>
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@ -3732,7 +3732,7 @@
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You could allow the Build Directory to be the same as the source directory but you would
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not be able to build more than one variant of the recipe.
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Consequently, if you are building multiple variants of the recipe, you need to establish a
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Build Directory that is different than the source directory.
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Build Directory that is different than the Source Directory.
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</para>
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</section>
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