diff --git a/config/mh-go32 b/config/mh-go32
index a13a4635646..f496b5b260e 100644
--- a/config/mh-go32
+++ b/config/mh-go32
@@ -1,3 +1,10 @@
+# We don't want to use debugging information on DOS.  Unfortunately,
+# this requires that we set CFLAGS.
+CFLAGS=-O2 -fno-omit-frame-pointer
+
+# We set MAKEINFOFLAGS to not split .info files, because the resulting
+# file names don't work on DOS.
 MAKEINFOFLAGS=--no-split
 
+# This does some sort of DOS specific installation, I guess.
 INSTALL_DOSREL=install-dosrel