diff -Naur graphviz-2.44.1-orig/configure.ac graphviz-2.44.1/configure.ac
--- graphviz-2.44.1-orig/configure.ac	2020-06-29 11:47:18.000000000 +0300
+++ graphviz-2.44.1/configure.ac	2020-10-30 13:16:53.166940100 +0300
@@ -294,7 +294,7 @@
   TCLSH=$withval,)
 
 if test "x$TCLSH" = "x"; then
-  AC_PATH_PROGS(TCLSH,[tclsh8.6 tclsh8.5 tclsh8.4 tclsh8.3 tclsh],[],[/usr/bin])
+  AC_PATH_PROGS(TCLSH,[tclsh86 tclsh8.6 tclsh85 tclsh8.5 tclsh84 tclsh8.4 tclsh83 tclsh8.3 tclsh],[],[/usr/bin])
 #  if test "x$TCLSH" = "x"; then
 #    AC_MSG_ERROR([Unable to find a tclsh. Tclsh is a required program for building graphviz, independent of wether tcl-based graphviz products are built])
 #    use_tcl="No (tclsh unavailable)"
@@ -2696,8 +2696,8 @@
   LDFLAGS="$LDFLAGS $GLUT_LIBS"
 
   AC_CHECK_HEADER(GL/glut.h,
-    AC_CHECK_LIB(glut,main,
-      [GLUT_LIBS="$GLUT_LIBS -lglut"
+    AC_CHECK_LIB(freeglut,main,
+      [GLUT_LIBS="$GLUT_LIBS -lfreeglut"
       use_glut="Yes"
       AC_DEFINE_UNQUOTED(HAVE_GLUT,1,[Define if you have the GLUT library])],
       use_glut="No (missing libglut)"