Fix for version.sh when libvpx is checked out as git submodule
When using git submodules, .git may be a file instead of a directory.
The -d test was failing in that case; switched to -e.
BUG=https://bugs.chromium.org/p/webm/issues/detail?id=1215
Change-Id: Iedf0e92bfeb003b28a415945dc729e6ce58c4fe4
diff --git a/build/make/version.sh b/build/make/version.sh
index 46d559e..6e758d8 100755
--- a/build/make/version.sh
+++ b/build/make/version.sh
@@ -22,8 +22,9 @@
id=${3:-VERSION_STRING}
git_version_id=""
-if [ -d "${source_path}/.git" ]; then
+if [ -e "${source_path}/.git" ]; then
# Source Path is a git working copy. Check for local modifications.
+ # Note that git submodules may have a file as .git, not a directory.
export GIT_DIR="${source_path}/.git"
git_version_id=`git describe --match=v[0-9]* 2>/dev/null`
fi
