RE: ld includes entire archive (.a) when compiling .elf file

["Josh Keller" <jkeller at keytechinc dot com>]

I think this link may help:
http://m68hc11.serveftp.org/faq.php?file=faq/link/gc-1.txt

I will let you know how it works out.
-Josh

Joshua Keller
Key Technologies, Inc.
40 East Cross Street
Baltimore, MD 21230
Phone:  410-385-0200
Fax:      410-385-1114
jkeller@keytechinc.com
www.keytechinc.com
 

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-----Original Message-----
From: Daniel Jacobowitz [mailto:drow@false.org] 
Sent: Friday, March 10, 2006 6:02 PM
To: Josh Keller
Cc: binutils@sourceware.org; Reuben Johnston
Subject: Re: ld includes entire archive (.a) when compiling .elf file

On Fri, Mar 10, 2006 at 05:59:32PM -0500, Josh Keller wrote:
> Building with --gc-sections ends up giving me a 0-byte binary.  It 
> seems to think all my code is garbage (See below) ;)  I'm guessing 
> that I have to subdivide my code somehow to tell it what to remove,
etc.
> 
> I turned on the -f options and got the following error:
> /usr/local/gnu/lib/gcc-lib/arm-elf/3.3/../../../../arm-elf/bin/ld: -f 
> may not be used without -shared.

Then obviously you've passed it the wrong options... ah,
-ffunction-sections is not a linker option, it's a compiler option, so
no -Wl.

> Output from my compiler...
> 
> arm-elf-gcc  Cstartup.o   main.o Cstartup_SAM7.o irq.o pio.o
> interrupt_pit.o interrupt_Usart.o --output main.elf -nostartfiles 
> -Wl,-Map=main.map,--cref,--gc-sections -Iucos_ii -Lucos_ii -lucos_ii 
> -TAT91SAM7S64-ROM.ld

Try using the linker option -e to specify the function at the start of
execution.

--
Daniel Jacobowitz
CodeSourcery