Is it recomendable to recompile the dependent libraries of a project with ICC in order to gain performance improvement across all steps or doesn't this make any diffrence when i am compiling only the target project with ICC?
If (i) the code in the libraries gets pulled into the executable by the linker, (ii) the executable spends a significant fraction of its run time in the library code, and (iii) the library code is not already optimized: definitely yes.
