diff '--color=auto' -ur jpilot-1.8.2-orig/configure.in jpilot-1.8.2/configure.in
--- jpilot-1.8.2-orig/configure.in	2014-05-18 04:19:06.000000000 +0200
+++ jpilot-1.8.2/configure.in	2025-03-19 10:43:56.927172082 +0100
@@ -331,7 +331,10 @@
 save_LIBS="$LIBS"
 LIBS="$LIBS $PILOT_LIBS"
 
-AC_TRY_COMPILE([#include <pi-version.h>], [
+AC_TRY_COMPILE([
+#include <stdlib.h>
+#include <pi-version.h>
+], [
    exit(0);
 ], ,
  AC_MSG_ERROR([pilot-link header pi-version.h not found])