brac37 <MichieldeB@xxxxxxx> writes: > I have read that g++ supports the Borland model for removing duplicate > template instantiation (elf_i368, ld version 2.20 >= 2.8). However, when I > compile with the -frepro option, my executable gets smaller? What is the > reason of that? I assume you know that -frepo does not select the Borland model, which is what g++ does by default. When using -frepo object files should be smaller, but the executable should be approximately the same size, not counting debug info. What does the "size" program report? When using the default Borland model with released versions of g++ the duplicate debug info is not eliminated. This should be much better with the next release of gcc, 4.6. > Another thing is that when I compile with -fno-implicit-templates > -DNO_IMPLICIT_TEMPLATES, my object file gets very large, because I do every > possible template instantiation, but I do not care. What I do care is that > the linker ld does not throw away unused template instantiation when > generating the executable. Can I tell ld to do so? Yes, by using the --gc-sections option. From the compiler driver, write -Wl,--gc-sections. Ian
