bug#311: [Lnx-bbc-devel] -mcpu and ISO sizes

Seth David Schoen writes:

> What's odd about this is that uname -m gives exactly the same output
> on gar and garson -- including in the chroot.  Maybe that's not the
> whole story.
> 
> It is pretty clear that they do build binaries of different sizes for
> some reason.

OK,

Inside the chroot:

schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ gcc --vers ion
2.95.4
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ gcc -Os -o rescuept rescuept.c
/tmp/ccIsLHj1.o: In function `read_sectors':
/tmp/ccIsLHj1.o(.text+0x23): the `llseek' function may be dangerous; use `lseek64' instead.
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ ls -l resc uept
-rwxr-xr-x    1 schoen   schoen      11397 Feb  2 07:55 rescuept
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ gcc -o rescuept rescuept.c
/tmp/ccaqFhSp.o: In function `read_sectors':
/tmp/ccaqFhSp.o(.text+0x3b): the `llseek' function may be dangerous; use `lseek64' instead.
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ ls -l resc uept
-rwxr-xr-x    1 schoen   schoen      13319 Feb  2 07:55 rescuept
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$

Outside the chroot:

schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ gcc --version
2.95.4
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ gcc -Os -o  rescuept rescuept.c
/tmp/ccNaxgHy.o(.text+0x23): In function `read_sectors':
: the `llseek' function may be dangerous; use `lseek64' instead.
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ ls -l resc uept
-rwxr-xr-x    1 schoen   schoen      11365 Feb  1 23:55 rescuept
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ gcc -o res cuept rescuept.c
/tmp/cctub5vG.o(.text+0x3b): In function `read_sectors':
: the `llseek' function may be dangerous; use `lseek64' instead.
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$ ls -l resc uept
-rwxr-xr-x    1 schoen   schoen      13287 Feb  1 23:56 rescuept
schoen@requiem:~/gar/utils/util-linux/work/util-linux-2.11u/rescuept$

So even on the same machine and even without varying -m options (or -I
or -L), the gcc in the chroot and the gcc outside, which purport to be
the same gcc version, are yielding different-sized binaries _in every
case_.

In this case, as in a whole BBC build, building in the chroot seems to
yield binaries which are consistently larger than building outside.

-- 
Seth David Schoen <[email protected]> | Reading is a right, not a feature!
     http://www.loyalty.org/~schoen/   |                 -- Kathryn Myronuk
     http://vitanuova.loyalty.org/     |