[libvirt] version script and non-existent symbols

The current version script refers to symbols that don't exist in the code. What is the purpose of this? The Solaris linker (quite correctly, I think) generates hanging references to such symbols. If it's just for documentation, such symbols should be commented out in the script. But there is another more basic problem. If I configure out various components, such as storage, which is necessary in order to compile, then /those/ symbols don't exist, and the build fails as above. I think the solution to the latter is to provide stubs that return failure codes for every symbol that can be ./configured out. So we'd introduce a stubs.c file that has these for everything, and compile each of the stubs if the relevant WITH_ option isn't set. Finally, C-style comments aren't supported with the Solaris linker. Since both linkers support # as a comment delimiter, any objections to changing it to do that? regards john