Hi John, Thanks! You were infact correct, it does prefix with an '_'. This produces an executable of only 4kb now. (a 50% saving) When I try to execute the program I get a 'bus error', presumably because the cleanup/startup code is not run. I know this is getting a bit off the topic of GCC, but does anyone know what the stdlib does / what I need to do to make the program startup/cleanup nicely? Thanks, -Adrian On Sun, Feb 14, 2010 at 4:59 PM, John Graham <johngavingraham@xxxxxxxxxxxxxx> wrote: >> If I try and pass the entry point to LD, I get: >> gcc tiny.c -c -nostdlib -m32 >> ld tiny.o -e main >> ld: could not find entry point "main" (perhaps missing crt1.o) for >> inferred architecture i386 > > On my machine, that would work just fine - maybe gcc mangles function > names slightly on OSX, like prefixing with an '_'? Try running nm on > tiny.o and you'll see all its symbols - from your source, you should > only see one, the symbol marking the start of main(). Use the name of > that symbol as the -e argument to ld. >
