diff -up kdelibs-3.5.10/kimgio/jp2.cpp.me kdelibs-3.5.10/kimgio/jp2.cpp
--- kdelibs-3.5.10/kimgio/jp2.cpp.me 2020-09-15 10:31:41.874769189 +0200
+++ kdelibs-3.5.10/kimgio/jp2.cpp 2020-09-15 10:32:38.515076930 +0200
@@ -12,6 +12,9 @@
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
+
+#include <unistd.h>
+
#include <ktempfile.h>
#include <qcolor.h>
#include <qcstring.h>