Creating library blender.lib and object blender.exp LINK : warning LNK4049: locally defined symbol "__iob" imported libz_st.lib(gzio.o) : error LNK2001: unresolved external symbol __alloca blender.exe : fatal error LNK1120: 1 unresolved externals scons: *** [blender.exe] Error 1120 scons: building terminated because of errors. C:\Soc Blender\blender>