Ingo Krabbe writes: > Am Dienstag, 27. Juni 2006 06:22 schrieb Binesh: > > We are trying to build an application for ARM-11 using gcc and the > > related auto make suite) that would occupy minimal size. > > > > After adding the -Os and -mthumb we noticed that the size of the > > stripped executable with a dependency on libc.so and libz.so was about > > 87K. > > However, when we statically linked it the stripped size grew to 510 K. > > We removed all code that uses any of string library or stdio and > > instead use only system calls such as ioctl, read, write, mmap and > > munmap. (verified using the symbol dumped out by readelf) > > Despite this the size remains at 510K. Don't guess why. Try linking with -Wl,-Map,app.map This will give you a map file that tells you exactly why everything gets linked. > > Trying to link with -nostdlib fails as it refers to undefined > > reference to ioctl, read, write, mmap and munmap. > > Trying to link with -nostartfiles brought down the size to only 502K. > > > > Do the sys call routines need std libs to be linked in? > > Is there an alternative to reduce the size of the statically linked > > exe? (Assuming that it might be difficult to migrate all code to asm) Can't you just use a small asm version of those syscalls? You've got source for glibc, so writing the syscalls should only take a few hours. Andrew.
