1 files changed, 3 insertions, 0 deletions
diff --git a/src/disk_interface.cc b/src/disk_interface.cc
index 3233144..090e94e 100644
--- a/src/disk_interface.cc
+++ b/src/disk_interface.cc
@@ -146,6 +146,9 @@ bool RealDiskInterface::WriteFile(const string& path, const string& contents) {
 
 bool RealDiskInterface::MakeDir(const string& path) {
   if (::MakeDir(path) < 0) {
+    if (errno == EEXIST) {
+      return true;
+    }
     Error("mkdir(%s): %s", path.c_str(), strerror(errno));
     return false;
   }