Index: git-2.53.0/t/unit-tests/clar/clar.h
===================================================================
--- git-2.53.0.orig/t/unit-tests/clar/clar.h
+++ git-2.53.0/t/unit-tests/clar/clar.h
@@ -11,7 +11,7 @@
 #include <stdlib.h>
 #include <limits.h>
 
-#if defined(_WIN32) && defined(CLAR_WIN32_LONGPATHS)
+#if defined(__GNU__) || defined(_WIN32) && defined(CLAR_WIN32_LONGPATHS)
 # define CLAR_MAX_PATH 4096
 #elif defined(_WIN32)
 # define CLAR_MAX_PATH MAX_PATH
