1 files changed, 8 insertions, 0 deletions
diff --git a/src/util.h b/src/util.h
index 188528c..30544ca 100644
--- a/src/util.h
+++ b/src/util.h
@@ -12,6 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#ifndef NINJA_UTIL_H_
+#define NINJA_UTIL_H_
+
 // Dump a backtrace to stderr.
 // |skip_frames| is how many frames to skip;
 // DumpBacktrace implicitly skips itself already.
@@ -19,3 +22,8 @@ void DumpBacktrace(int skip_frames);
 
 // Log a fatal message, dump a backtrace, and exit.
 void Fatal(const char* msg, ...);
+
+// Log an error message.
+void Error(const char* msg, ...);
+
+#endif // NINJA_UTIL_H_