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Re: Increased binary size in RedHat 7 using gcc
- To: Pawan Singh <psingh at turnstone dot com>
- Subject: Re: Increased binary size in RedHat 7 using gcc
- From: "H . J . Lu" <hjl at valinux dot com>
- Date: Wed, 14 Feb 2001 10:15:32 -0800
- Cc: "'gcc at gcc dot gnu dot org'" <gcc at gcc dot gnu dot org>
- References: <33DF29A0C402D411B70500508B104731012FEBD9@mail2.turnstone.com>
On Wed, Feb 14, 2001 at 09:59:07AM -0800, Pawan Singh wrote:
> We are recently trying to move from RedHat 6.0 to RedHat 7.0. We are using
> the following compiler:
>
> gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
>
> What we are finding is that almost every executable file is bigger on RedHat
> 7.0 than on RedHat 6.0 using the exact same gcc compiler for exact same code
> using the same Makefile. It is causing us a lot of problem because this is
> for an embedded use and we cannot afford the code size increase. On looking
> at the output of "size" on the executable, I can see that the "text" segment
> has increased in size. It is as if the compiler is generating more
> instructions for the same code.
>
I used -Os. It seems to make a big difference in size.
--
H.J. Lu (hjl@valinux.com)