File format not recognized error while including libs of casablanca into my project

Here is the error while including libs of casablanca into my project, can someone please provide some suggestions I tried make clean but that doesn't seems to work.

/usr/bin/ld: cannot find /opt/casablanca/Release/build.release/Binaries: File format not recognized collect2: error: ld returned 1 exit status /home/knils/source/Makefile:88: recipe for target '/home/knils/bin/linux5_64_DBG/target' failed make: *** [/home/knils/bin/linux5_64_DBG/target] Error 1