diff -Nrup a/converter/other/cameratopam/camera.c b/converter/other/cameratopam/camera.c
--- a/converter/other/cameratopam/camera.c	2023-03-27 09:01:14.000000000 +0200
+++ b/converter/other/cameratopam/camera.c	2023-12-09 15:17:33.910374277 +0100
@@ -2,6 +2,7 @@
 #define _XOPEN_SOURCE 500
     /* Make sure putenv is in stdlib.h, strcaseeq is in nstring.h */
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>