How can i compile using g++??

[Hyeon-Hoo]

/tmp/ccvT6nCV.o: In function main': main.cpp:(.text+0xda): undefined reference to fgr::CApp::ReadFeature(char const*)'
main.cpp:(.text+0xfa): undefined reference to fgr::CApp::ReadFeature(char const*)' main.cpp:(.text+0x109): undefined reference to fgr::CApp::NormalizePoints()'
main.cpp:(.text+0x118): undefined reference to fgr::CApp::AdvancedMatching()' main.cpp:(.text+0x12c): undefined reference to fgr::CApp::OptimizePairwise(bool)'
main.cpp:(.text+0x14c): undefined reference to `fgr::CApp::WriteTrans(char const*)'
collect2: error: ld returned 1 exit status

if i input in terminal using "g++ main.cpp", i got this error

Is there any way I can use it with g++ without using cmake?