Neuroevolution paper source code build failed : Linker error

$ uname -a
Linux titanic 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u3 (2016-01-17) x86_64 GNU/Linux
$ ./build.sh
Builiding HyperNEAT
[  8%] Built target CakeFixedDepthLib
[ 10%] Built target ClicheExe
[ 12%] Built target ClicheLib
Scanning dependencies of target NEATLib_pch_dephelp
[ 13%] Building CXX object NEAT/CMakeFiles/NEATLib_pch_dephelp.dir/NEATLib_pch_dephelp.cxx.o
Linking CXX static library ../../../out/libNEATLib_pch_dephelp.a
[ 13%] Built target NEATLib_pch_dephelp
[ 14%] Generating NEAT_Defines.h.gch/NEATLib_Release.h++
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crt1.o: In function `_start':
/build/glibc-h_iKOs/glibc-2.19/csu/../sysdeps/x86_64/start.S:118: undefined reference to `main'
collect2: error: ld returned 1 exit status
NEAT/CMakeFiles/pch_Generate_NEATLib.dir/build.make:53: recipe for target 'NEAT/NEAT_Defines.h.gch/NEATLib_Release.h++' failed
make[2]: *** [NEAT/NEAT_Defines.h.gch/NEATLib_Release.h++] Error 1
CMakeFiles/Makefile2:285: recipe for target 'NEAT/CMakeFiles/pch_Generate_NEATLib.dir/all' failed
make[1]: *** [NEAT/CMakeFiles/pch_Generate_NEATLib.dir/all] Error 2
Makefile:76: recipe for target 'all' failed
make: *** [all] Error 2
$