The usual way to get around Microsoft command line length limit is with a multi-step build. For example, link groups of objects into larger objects or libraries, then link them together. You might note that this is often done in open software, for example, in the g++ and gfortran library builds.
I recognize that this tends to defeat the convenience of Visual Studio. There, my colleagues tend to work with large source files containing many subroutines, so that the number of .obj files required stays within Microsoft limits. Others prefer to group objects into .dll each of which is under the limit.
