Re: uClibc vs. eglibc size on ARM

[Khem Raj <raj dot khem at gmail dot com>]

On Mon, Oct 22, 2012 at 12:36 PM, Johannes Stezenbach <js@sig21.net> wrote:
> On Mon, Oct 22, 2012 at 12:09:43PM -0700, Khem Raj wrote:
>> On Mon, Oct 22, 2012 at 11:18 AM, Johannes Stezenbach <js@sig21.net> wrote:
>> > On Mon, Oct 22, 2012 at 09:36:24AM -0700, Khem Raj wrote:
>> >> On Mon, Oct 22, 2012 at 6:22 AM, Johannes Stezenbach <js@sig21.net> wrote:
>> >> >
>> >> > The minimal eglibc config for eglibc-1.16 (libm needed by gcc,
>> >> > the other options to un-break eglibc build):
>> >> >
>> >> > OPTION_EGLIBC_INET = y
>> >> > OPTION_EGLIBC_LIBM = y
>> >> > OPTION_EGLIBC_NSSWITCH = y
>> >> > OPTION_EGLIBC_RTLD_DEBUG = y
>> >> > OPTION_POSIX_C_LANG_WIDE_CHAR = y
>> >> > OPTION_POSIX_WIDE_CHAR_DEVICE_IO = y
>> >>
>> >> check option-groups.config file in eglibc's top build dir. I wonder if
>> >> others options were turned of or not.
>> >
>> > I started with all options off and then enabled them one by one
>> > until it built, looking at the failures to figure out which
>> > option might be responsible.   OPTION_EGLIBC_RTLD_DEBUG was
>> > the first one, which depends on OPTION_POSIX_WIDE_CHAR_DEVICE_IO
>> > which in turn depends on OPTION_POSIX_C_LANG_WIDE_CHAR.
>> > OPTION_EGLIBC_NSSWITCH and OPTION_EGLIBC_INET were next.
>> > OPTION_EGLIBC_LIBM is needed by gcc (eglibc itself builz
>> > without it).
>> >
>>
>> and it did not change size of libc compared to when you have all options
>> on ? is that what you observed ?
>
> Apprently my first mail was too long to read...
> It contained numbers for full eglibc vs. minimal eglibc vs. uClibc,
> for public record because it would have saved me from doing
> the experiments myself if I had been able to find those numbers on the net.
>

revising back I see that the size of libc.so goes down from ~1.11Mb to
~770Kb so there is size reduction its just not in area where you are
expecting your message somehow gave a hint that size of libc did not
reduce at all.

>
> Johannes

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