From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nausicaa2.coritel.it (host254-130-static.190-82-b.business.telecomitalia.it [82.190.130.254]) by ozlabs.org (Postfix) with ESMTP id 42700DDE19 for ; Mon, 12 May 2008 20:02:54 +1000 (EST) Message-ID: <482815D3.8020309@coritel.it> Date: Mon, 12 May 2008 12:02:59 +0200 From: Marco Stornelli MIME-Version: 1.0 To: Ramkumar J Subject: Re: Compiling applications using cross compiler packs libc References: <4f8c3030805120212r730ded9dv23dfcc29119ebfe5@mail.gmail.com> In-Reply-To: <4f8c3030805120212r730ded9dv23dfcc29119ebfe5@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Cc: linuxppc-embedded@ozlabs.org List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Ramkumar J ha scritto: > Hi All, > > I am trying to execute a compiled simple stand-alone application ( > TestApp_Memory.c compiled with gcc 4.1.0 cross compiler for ppc [ I have > installed this through crosstool on a Linux PC ] ) on the ML403 Board > instead of using the compiler-set provided by XPS. I tried many options ( > like --static to gcc) to make the object file little as produced by the XPS > Compiler Set. I find that when static is provided, the glibc is also packed > up as a part of application though I never make any calls to the glibc > libraries. If I dont provide the --static, the gcc produces a code assuming > the library as shared and hence I get an interp section. > Is there any way to produce the code with only the application and NOT the > glibc ( As XPS compilers does). Am I missing out something. Is there any > specific flags. I find even nodefaultlib does not work. > > For Eg: This is another example I tried > > int main() > { > int a = 5; > int b = 10; > int c = 15; > > c = a + b; > > c += 12; > > return 0; > } > > With --static compilation, size is about 500K for the above code though the > useful content is too less. objdump reveals unneccessary calls to the libc. > Any suggestions would be helpful. > > Thanks and Regards, > Ramkumar > > > > ------------------------------------------------------------------------ > > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded You shouldn't use --static but -Os to have a "little" program. With static you include all the libraries in your application therefore you have a bigger application. In addition libc are basic libraries so you have to use it. If you have size problems you can use uclibc.