Uses std::atof which is defined in <cstdlib>
--- src/xalanc/PlatformSupport/DoubleSupport.cpp.orig	2020-06-07 19:17:25.000000000 +1000
+++ src/xalanc/PlatformSupport/DoubleSupport.cpp	2022-12-14 20:42:20.000000000 +1100
@@ -22,6 +22,7 @@
 #include <clocale>
 #include <cmath>
 #include <climits>
+#include <cstdlib>
 #include <limits>