pkg-llvm-svn2git

The collection of scripts and configuration files in this repository allow pkg-llvm's active SVN repositories to be converted to git repositories, namely:

• emscripten
• iwyu
• libcxx
• llvm-defaults
• llvmlite
• llvm-toolchain
• openmprtl

Steps

1. Clone this repository to a location herein referred to as DIR

2. Install subversion, git and svn-all-fast-export

3. Run the following commands in order:

   ./do-sync
   ./do-export
   ./do-fixup
   ./do-repack

The final git repositories are then located in DIR/git/foo.git, with DIR/git/foo.git.orig containing all the pre-rewrite commits in case they are required.

do-sync

This will create a local mirror of svn://anonscm.debian.org/svn/pkg-llvm in DIR/svn/pkg-llvm. If re-running, remove DIR/svn first.

do-export

This simply runs svn-all-fast-export using the authors mapping and rules in this repository, creating git repositories inside DIR/git. If re-running, remove DIR/git first.

do-fixup

This performs several rewriting steps to tidy up the history. Detached tags are recreated to point to the right commit, superfluous merges are removed, and subdirectory tags are reconstructed to point to a complete tree (some repositories have their tags containing the contents of the debian directory). If re-running, remove DIR/git and re-run do-export first, as this modifies the repositories in-place.

do-repack

This moves each repository DIR/git/foo to DIR/git/foo.git.orig, creates a new bare clone in DIR/git/foo.git without all the pre-rewrite commits and repacks.

do-authors

This was used to generate the list of SVN authors from the history, and will overwrite authors.txt. If re-running, full names and email addresses need to be looked up manually to complete the regenerated file.