--- tuxracer-0.61-original/configure	2021-12-23 14:26:17.978567580 +0000
+++ tuxracer-0.61/configure	2021-12-24 12:12:08.718881004 +0000
@@ -1674,7 +1674,7 @@
 
 ; return 0; }
 EOF
-if { (eval echo configure:1678: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if [ "$ac_func" = "isnan" ]; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3415,7 +3415,7 @@
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
-LIBS="-lSDL_mixer  $LIBS"
+LIBS="-lSDL2_mixer  $LIBS"
 cat > conftest.$ac_ext <<EOF
 #line 3423 "configure"
 #include "confdefs.h"
@@ -3452,7 +3452,7 @@
 
 	if test "x$have_SDL_mixer" = "xyes" ; then 
 	    TR_CPPFLAGS="$TR_CPPFLAGS -DHAVE_SDL_MIXER=1" 
-	    TR_LIBS="$TR_LIBS -lSDL_mixer"
+	    TR_LIBS="$TR_LIBS -lSDL2_mixer"
 	else
 	    echo "*** SDL_mixer not found.  Configuring without audio support."
 	fi