tree 7cfb8b09dbf63b5c658e9b6763497b362e2ad7f3
parent 7ed9683f7d0b93d524028a9ad2b954a6d0be8e19
author Peter Collingbourne <peter@pcc.me.uk> 1547157427 +0000
committer Peter Collingbourne <peter@pcc.me.uk> 1547157427 +0000

gn build: Use "git rev-parse --git-dir" to discover the path to the .git directory.

This makes it compatible with worktrees.

Differential Revision: https://reviews.llvm.org/D56422

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350897 91177308-0d34-0410-b5e6-96231b3b80d8