|
|
@@ -1,66 +0,0 @@
|
|
|
-The Utilities/cmliblzma directory contains a reduced distribution
|
|
|
-of the liblzma source tree with only the library source code and
|
|
|
-CMake build system. It is not a submodule; the actual content is part
|
|
|
-of our source tree and changes can be made and committed directly.
|
|
|
-
|
|
|
-We update from upstream using Git's "subtree" merge strategy. A
|
|
|
-special branch contains commits of upstream liblzma snapshots and
|
|
|
-nothing else. No Git ref points explicitly to the head of this
|
|
|
-branch, but it is merged into our history.
|
|
|
-
|
|
|
-Update liblzma from upstream as follows. Create a local branch to
|
|
|
-explicitly reference the upstream snapshot branch head:
|
|
|
-
|
|
|
- git branch liblzma-upstream c289e634
|
|
|
-
|
|
|
-Use a temporary directory to checkout the branch:
|
|
|
-
|
|
|
- mkdir liblzma-tmp
|
|
|
- cd liblzma-tmp
|
|
|
- git init
|
|
|
- git pull .. liblzma-upstream
|
|
|
- rm -rf *
|
|
|
-
|
|
|
-Now place the (reduced) liblzma content in this directory. See
|
|
|
-instructions shown by
|
|
|
-
|
|
|
- git log c289e634
|
|
|
-
|
|
|
-for help extracting the content from the upstream svn repo. Then run
|
|
|
-the following commands to commit the new version. Substitute the
|
|
|
-appropriate date and version number:
|
|
|
-
|
|
|
- git add --all
|
|
|
-
|
|
|
- GIT_AUTHOR_NAME='liblzma upstream' \
|
|
|
- GIT_AUTHOR_EMAIL='[email protected]' \
|
|
|
- GIT_AUTHOR_DATE='Sun Jun 30 19:55:49 2013 +0300' \
|
|
|
- git commit -m 'liblzma 5.0.5-gb69900ed (reduced)' &&
|
|
|
- git commit --amend
|
|
|
-
|
|
|
-Edit the commit message to describe the procedure used to obtain the
|
|
|
-content. Then push the changes back up to the main local repository:
|
|
|
-
|
|
|
- git push .. HEAD:liblzma-upstream
|
|
|
- cd ..
|
|
|
- rm -rf liblzma-tmp
|
|
|
-
|
|
|
-Create a topic in the main repository on which to perform the update:
|
|
|
-
|
|
|
- git checkout -b update-liblzma master
|
|
|
-
|
|
|
-Merge the liblzma-upstream branch as a subtree:
|
|
|
-
|
|
|
- git merge -s recursive -X subtree=Utilities/cmliblzma \
|
|
|
- liblzma-upstream
|
|
|
-
|
|
|
-If there are conflicts, resolve them and commit. Build and test the
|
|
|
-tree. Commit any additional changes needed to succeed.
|
|
|
-
|
|
|
-Finally, run
|
|
|
-
|
|
|
- git rev-parse --short=8 liblzma-upstream
|
|
|
-
|
|
|
-to get the commit from which the liblzma-upstream branch must be started
|
|
|
-on the next update. Edit the "git branch liblzma-upstream" line above to
|
|
|
-record it, and commit this file.
|