diff -r 5b24ad070bb0 -r f675a4e99fb5 make/project.xml
--- a/make/project.xml	Sun Nov 30 13:29:35 2025 +0100
+++ b/make/project.xml	Sun Nov 30 13:55:12 2025 +0100
@@ -12,7 +12,9 @@
         <var name="build_dir">\${root_dir}/build</var>
         <var name="docs_dir">\${root_dir}/build/docs</var>
         <var name="dist_dir">\${root_dir}/dist</var>
-        <var name="DOXYGEN" exec="true" option-help="path of the Doxygen executable">command -v doxygen</var>
+        <var name="DOXYGEN" exec="true" option-help="path of the Doxygen executable">
+            command -v doxygen || echo '/bin/false'
+        </var>
         <var name="MKDIR">/bin/mkdir -p</var>
         <var name="RMFILE">/bin/rm -f</var>
         <var name="RMDIR">/bin/rm -f -R</var>