based on OpenCASCADE
igescnv.exe IGESorSTEP_File -o objbasename -edge [0,1] -one [0,1] -timeout min
ex) igescnv.exe model.igs -o model
ex) igescnv_write.exe CP.dat -o igesFile.igs
CP.dat is the control point data file. https://github.com/Sanaxen/OBJ-to-IGES
Visual Studio
OpenCASCADE7.1.0-vc10-64