This morning I realized that I can’t build git version of Synfig on my friend’s PC. Build failed on the first stage after invoking “autoreconf –install –force” for synfig-core.
Using “git grep libltdl” I’ve found commented “AC_CONFIG_SUBDIRS(libltdl)” line in synfig-core/configure.ac and comment above:
# this line is required for libtool 1.5.26 but must not be present for libtool 2.2.4...
I was sure that there should be a way to resolve that incompatibility. After googling around a bit I have found similar case described on this page: https://gnunet.org/mantis/view.php?id=1340.