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| author |   Scott Rifenbark <scott.m.rifenbark@intel.com> | 2014-06-02 17:22:00 +0300 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2014-06-18 10:30:44 +0100 |
| commit | d57b5e514917593e5547a327d5306b42da4064d1 (patch) | |
| tree | 84c6cb4008d7aac0e4833158f540f617ed131316 /documentation/ref-manual/closer-look.xml | |
| parent | a456afa06c56dd87da74c40d886fbcc4dce20e02 (diff) | |
| download | openembedded-core-contrib-d57b5e514917593e5547a327d5306b42da4064d1.tar.gz | |
ref-manual: Updated the do_fetch closer look for checksum behavior.
Fixes [YOCTO #5521]
I created a brief note in the do_fetch subsection of the
"Taking a Closer Look" section to deal with how the build
system uses checksums during do_fetch to re-execute stuff
if a file:// listed in the SRC_URI has had its contents
modified.
(From yocto-docs rev: 7b857635f2663af7c1d5e8aa87239472a5b47919)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'documentation/ref-manual/closer-look.xml')
| -rw-r--r-- | documentation/ref-manual/closer-look.xml | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/documentation/ref-manual/closer-look.xml b/documentation/ref-manual/closer-look.xml index 7546215ae6..f0ed967228 100644 --- a/documentation/ref-manual/closer-look.xml +++ b/documentation/ref-manual/closer-look.xml @@ -713,8 +713,19 @@ <link linkend='ref-tasks-fetch'><filename>do_fetch</filename></link> and <link linkend='ref-tasks-unpack'><filename>do_unpack</filename></link> - tasks fetch the source files - and unpack them into the work directory. + tasks fetch the source files and unpack them into the work + directory. + <note> + For every local file (e.g. <filename>file://</filename>) + that is part of a recipe's + <link linkend='var-SRC_URI'><filename>SRC_URI</filename></link> + statement, the OpenEmbedded build system takes a checksum + of the file for the recipe and inserts the checksum into + the signature for the <filename>do_fetch</filename>. + If any local file has been modified, the + <filename>do_fetch</filename> task and all tasks that + depend on it are re-executed. + </note> By default, everything is accomplished in the <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>, which has a defined structure. |