vkQuake is packaged with .orig files in ${WRKSRC}/Misc/vq_pak/maps, these
 files will conflict with the makepatch script in
 ${PORTSDIR}/Mk/Scripts/smart_makepatch.sh, which results in a makepatch
 process that does not generate this patch. To get around this, remove
 ${WRKSRC}/Misc/vq_pak/maps when the patches need to be regenerated.

--- Quake/common.c.orig	2025-05-01 11:30:09 UTC
+++ Quake/common.c
@@ -2454,7 +2454,7 @@ void COM_InitFilesystem (void) // johnfitz -- modified
 	if (i && i < com_argc - 1)
 		q_strlcpy (com_basedir, com_argv[i + 1], sizeof (com_basedir));
 	else
-		q_strlcpy (com_basedir, host_parms->basedir, sizeof (com_basedir));
+		q_strlcpy (com_basedir, DATADIR, sizeof (com_basedir));
 
 	j = strlen (com_basedir);
 	if (j < 1)