cppflags.patch

   1 --- graphviz-2.47.2/configure.ac.orig   2023-07-07 01:21:15.427742856 +0200
   2 +++ graphviz-2.47.2/configure.ac        2023-07-07 01:49:04.518671957 +0200
   3 @@ -739,7 +739,7 @@
   4                         false)
   5                 ])
   6            ac_save_CFLAGS="$CFLAGS"
   7 -          ac_save_CPPFLAGS="$save_CPPFLAGS"
   8 +          ac_save_CPPFLAGS="$CPPFLAGS"
   9            CFLAGS="$CFLAGS $GUILE_INCLUDES"
  10            CPPFLAGS="$CPPFLAGS $GUILE_INCLUDES"
  11            AC_CHECK_HEADER(libguile.h,,[