| diff --git a/clang/lib/DirectoryWatcher/linux/DirectoryWatcher-linux.cpp b/clang/lib/DirectoryWatcher/linux/DirectoryWatcher-linux.cpp |
| index 176d6d6abf3..a6d63bf24b8 100644 |
| --- a/clang/lib/DirectoryWatcher/linux/DirectoryWatcher-linux.cpp |
| +++ b/clang/lib/DirectoryWatcher/linux/DirectoryWatcher-linux.cpp |
| @@ -33,6 +33,13 @@ namespace { |
| using namespace llvm; |
| using namespace clang; |
| |
| +#define EPOLL_CLOEXEC -1 |
| +#define IN_CLOEXEC -1 |
| +#define O_CLOEXEC -1 |
| +static int epoll_create1(int flags) { return -1; } |
| +static int inotify_init1(int flags) { return -1; } |
| +static int pipe2(int *fds, int flags) { return -1; } |
| + |
| /// Pipe for inter-thread synchronization - for epoll-ing on multiple |
| /// conditions. It is meant for uni-directional 1:1 signalling - specifically: |
| /// no multiple consumers, no data passing. Thread waiting for signal should |
