BACnet Stack @ SourceForge.net Build using Code Blocks Q1: GNU GCC Compiler, undefined reference to closesocket A1: Under Project->Build Options->Linker settings, add "ws2_32" to Link Libraries. Q2: GNU GCC Compiler, creating a DLL A2: Under Project->Build Options->Linker settings, add "user32" to Link Libraries. Q3: GNU GCC Compiler, undefined reference to _GetAdaptersInfo A3: Under Project->Build Options->Linker settings, add "iphlpapi" to Link Libraries. Q4: I don't see any Code::Blocks project files. How do I build? A4: Use cmake to generate the project file. For example: $ mkdir build && cd build $ cmake -G"CodeBlocks - Unix Makefiles" .. or any of the following generators depending on your compiler preference: CodeBlocks - MinGW Makefiles CodeBlocks - NMake Makefiles CodeBlocks - NMake Makefiles JOM CodeBlocks - Ninja CodeBlocks - Unix Makefiles