mirror of
https://github.com/rust-lang/rust.git
synced 2025-11-04 06:56:14 +00:00
53 lines
1.5 KiB
Markdown
53 lines
1.5 KiB
Markdown
# git subtree sync
|
|
|
|
`rustc_codegen_gcc` is a subtree of the rust compiler. As such, it needs to be
|
|
sync from time to time to ensure changes that happened on their side are also
|
|
included on our side.
|
|
|
|
### How to install a forked git-subtree
|
|
|
|
Using git-subtree with `rustc` requires a patched git to make it work.
|
|
The PR that is needed is [here](https://github.com/gitgitgadget/git/pull/493).
|
|
Use the following instructions to install it:
|
|
|
|
```bash
|
|
git clone git@github.com:tqc/git.git
|
|
cd git
|
|
git checkout tqc/subtree
|
|
make
|
|
make install
|
|
cd contrib/subtree
|
|
make
|
|
cp git-subtree ~/bin
|
|
```
|
|
|
|
### Syncing with rust compiler
|
|
|
|
Do a sync with this command:
|
|
|
|
```bash
|
|
PATH="$HOME/bin:$PATH" ~/bin/git-subtree push -P compiler/rustc_codegen_gcc/ ../rustc_codegen_gcc/ sync_branch_name
|
|
cd ../rustc_codegen_gcc
|
|
git checkout master
|
|
git pull
|
|
git checkout sync_branch_name
|
|
git merge master
|
|
```
|
|
|
|
To send the changes to the rust repo:
|
|
|
|
```bash
|
|
cd ../rust
|
|
git pull origin master
|
|
git checkout -b subtree-update_cg_gcc_YYYY-MM-DD
|
|
PATH="$HOME/bin:$PATH" ~/bin/git-subtree pull --prefix=compiler/rustc_codegen_gcc/ https://github.com/rust-lang/rustc_codegen_gcc.git master
|
|
git push
|
|
|
|
# Immediately merge the merge commit into cg_gcc to prevent merge conflicts when syncing from rust-lang/rust later.
|
|
PATH="$HOME/bin:$PATH" ~/bin/git-subtree push -P compiler/rustc_codegen_gcc/ ../rustc_codegen_gcc/ sync_branch_name
|
|
```
|
|
|
|
TODO: write a script that does the above.
|
|
|
|
https://rust-lang.zulipchat.com/#narrow/stream/301329-t-devtools/topic/subtree.20madness/near/258877725
|