I try to install the MB-System on Ubuntu20, and it was easy to build through CMake. When I tried the command 'make', this error occured:
[ 59%] Building CXX object src/utilities/CMakeFiles/mbabsorption.dir/mbabsorption.cc.o
[ 59%] Linking CXX executable mbabsorption
/usr/bin/ld: ../mbio/libmbio.so.0: undefined reference to `proj_normalize_for_visualization'
collect2: error: ld returned 1 exit status
make[2]: *** [src/utilities/CMakeFiles/mbabsorption.dir/build.make:105: src/utilities/mbabsorption] Error 1
make[1]: *** [CMakeFiles/Makefile2:1826: src/utilities/CMakeFiles/mbabsorption.dir/all] Error 2
make: *** [Makefile:146: all] Error 2
Why this bug appear? Thank you!