Prevent Visual Studio from relinking when dependency change -

i have visual studio 2012 solution have several dll projects. maindll depends on smalldll. if make local change in smalldll - without changing exported api - small change in local function - maindll gets relinked.

question 1: rational behind relinking maindll - smalldll not built maindll - picked @ runtime? if build smalldll, maindll works fine. if change smalldll's api, of headers change, of maindll's files have recompiled - relink justified, why relink local change?

question 2: there way prevent such relinking? need dependency between maindll's project , smalldll's, when run maindll's project after making change smalldll, want smalldll rebuilt.

thanks lot!

in visualstudio 2008, check "build , run" options through "options" / "projects , solutions" / "build , run" / "on run, when projects out of date", , select "prompt build" or "never build". if choose not rebuild automatically, remember have manually when interfaces change.