Hi,
I am trying to install Freeling 4.0 on Ubuntu 18.04.4 LTS.
I downloaded the 4.0 version available at this link https://github.com/TALP-UPC/FreeLing/tree/4.0

While compiling (make command) I get the following error:


libtool: link: g++ -I../../src/include -I../../src/libtreeler -I../../src/libfoma -O3 -Wall -fPIC -std=gnu++0x -Wall -fPIC -o .libs/analyzer sample_analyzer/main.o -L../../src/libfreeling /home/fabioaffe/FreeLing-4.0/src/libfreeling/.libs/libfreeling.so -lboost_regex -lboost_system -lz -lboost_program_options -lpthread
/home/fabioaffe/FreeLing-4.0/src/libfreeling/.libs/libfreeling.so: undefined reference to `boost::re_detail_106501::icu_regex_traits_implementation::do_transform(int const*, int const*, icu_65::Collator const*) const'
/home/fabioaffe/FreeLing-4.0/src/libfreeling/.libs/libfreeling.so: undefined reference to `u_tolower_65'
collect2: error: ld returned 1 exit status
Makefile:457: recipe for target 'analyzer' failed
make[2]: *** [analyzer] Error 1
make[2]: Leaving directory '/home/fabioaffe/FreeLing-4.0/src/main'
Makefile:356: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/fabioaffe/FreeLing-4.0/src'
Makefile:439: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1


I think all dependencies are ok.
Any ideas? Has anyone else encountered this problem?