@@ -837,13 +837,21 @@
 	AC_DEFINE(OF_HAVE_FILES, 1, [Whether we have files])
 	AC_SUBST(USE_SRCS_FILES, '${SRCS_FILES}')
 	AC_SUBST(OFHASH, "ofhash")
 	AC_SUBST(OFZIP, "ofzip")
 
-	AC_CHECK_TYPE(off64_t, [
-		AC_DEFINE(OF_HAVE_OFF64_T, 1, [Whether we have off64_t])
-	])
+	case "$host_os" in
+		msdosdjgpp*)
+			dnl DJGPP has the type, but it's not really usable.
+			;;
+		*)
+			AC_CHECK_TYPE(off64_t, [
+				AC_DEFINE(OF_HAVE_OFF64_T, 1,
+					[Whether we have off64_t])
+			])
+			;;
+	esac
 
 	AC_CHECK_HEADERS([pwd.h grp.h])
 	AC_CHECK_FUNC(chmod, [
 		AC_DEFINE(OF_HAVE_CHMOD, 1, [Whether we have chmod()])
 	])