Using Eclipse CDT
In the root folder of each OpenV2G release you will find Eclipse project files which can be used to import OpenV2G into your Eclipse CDT environment. If necessary you should modify the tool chain in the project properties (Properties-->C/C++ Build -->Tool Chain Editor).
In the Release and Debug folder you will find makefiles which can be used to compile the OpenV2G project in release or debug mode. Depending on which C compiler you are using you should modify your compiler command within the makefiles and all *.mk files.