[rtems-source-builder commit] doc: add example of a local patch

[Gedare Bloom]

Module:    rtems-source-builder
Branch:    master
Commit:    cac72a2aea711f671816d7c41bb1cfe66d54ee37
Changeset: http://git.rtems.org/rtems-source-builder/commit/?id=cac72a2aea711f671816d7c41bb1cfe66d54ee37

Author:    Gedare Bloom <gedare at rtems.org>
Date:      Mon Aug  1 14:43:29 2016 -0400

doc: add example of a local patch

---

 doc/source-builder.txt | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/doc/source-builder.txt b/doc/source-builder.txt
index 70b5d98..3bcc397 100644
--- a/doc/source-builder.txt
+++ b/doc/source-builder.txt
@@ -826,7 +826,7 @@ Packages being built by the RSB need patches from time to time and the RSB
 supports patching upstream packages. The patches are held in a seperate
 directory called +patches+ relative to the configuration directory you are
 building. For example +%{\_topdir}/patches:%{\_sbdir}/patches+. Patches are
-declared in the configuraiton files in a similar manner to the package's source
+declared in the configuration files in a similar manner to the package's source
 so please refer to the +%source+ documentation. Patches, like the source, are
 to be made publically available for configurations that live in the RSB package
 and are downloaded on demand.
@@ -900,8 +900,14 @@ To test a patch simply copy it to your local +patches+ directory. The RSB will
 see the patch is present and will not attempt to download it. Once you are
 happy with the patch submit it to the project and a core developer will review
 it and add it to the RTEMS Tools git repository.
-
-File Checksums
+For example, to test a local patch for newlib, add the following two lines to
+the .cfg file in +rtems/config/tools/+ that is included by the bset you use:
+-------------------------------------------------------------
+%patch add newlib file://0001-this-is-a-newlib-patch.patch <1>
+%hash md5 0001-this-is-a-newlib-patch.diff 77d070878112783292461bd6e7db17fb <2>
+-------------------------------------------------------------
+<1> The diff file prepended with +file://+ to tell RSB this is a local file.
+<2> The output from md5sum on the diff file.
 
 Cross and Canadian Cross Building
 ---------------------------------