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Re: c++ and whole-program optimization
On Tue, Jun 3, 2008 at 22:05, Philippe Suter <psuter@csail.mit.edu> wrote:
> I tried compiling a C++ project using the --combine and
> --whole-program flags, and passing all source files at once, but I get
> linker errors for essentially all functions called from main(). I seem
> to remember that I read somewhere that --combine and --whole-program
> only work with C code.. Is this a confirmed fact and the reason I'm
> getting these errors, or am I missing something?
Yes. The --combine option only ever worked in C. We are working on
proper link-time optimization support, but this will not be ready for
a while. See http://gcc.gnu.org/wiki/whopr for details.
Diego.