1 Do not require libltdl.la for building.
3 diff -u -r ../graphviz-2.40.1/configure ./configure
4 --- ../graphviz-2.40.1/configure 2016-12-25 04:04:52.000000000 +0100
5 +++ ./configure 2017-08-11 14:35:43.459379008 +0200
6 @@ -19556,15 +19556,6 @@
10 -if test -n "$with_ltdl_lib"; then
11 - if test -f "$with_ltdl_lib/libltdl.la"; then :
13 - as_fn_error $? "invalid ltdl library directory: \`$with_ltdl_lib'" "$LINENO" 5
19 case ,$with_included_ltdl,$with_ltdl_include,$with_ltdl_lib, in
21 case $enable_ltdl_convenience in