Index: openexr-3.1.5/src/bin/exrcheck/main.cpp
===================================================================
--- openexr-3.1.5.orig/src/bin/exrcheck/main.cpp
+++ openexr-3.1.5/src/bin/exrcheck/main.cpp
@@ -13,6 +13,7 @@
 # include <unistd.h>
 #endif
 #include <vector>
+#include <cstdint>
 
 using namespace OPENEXR_IMF_NAMESPACE;
 using std::cout;