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RE: [avr-gcc-list] How to skip c-runtime init

From: Larry Barello
Subject: RE: [avr-gcc-list] How to skip c-runtime init
Date: Wed, 18 May 2005 09:29:32 -0700

-nostartfiles deletes the interrupt vector table, but I still end up with
fragments for initializing data and clearing BSS.

-nostdlib deletes all libc stuff (eeprom_read_byte(), etc) which are easy
enough to replace.

Is the "nostartfiles" behavior correct?  Or is there some other essential
tidbit I am missing?

-----Original Message-----
From: Šak Andrej [mailto:address@hidden
Sent: Tuesday, May 17, 2005 11:49 PM
To: Larry Barello; AVR GCC List
Subject: RE: [avr-gcc-list] How to skip c-runtime init

You can try -nostartfiles option for linking.

from  man avr-gcc:

           Do not use the standard system startup files when linking.  The
           standard system libraries are used normally, unless -nostdlib or
           -nodefaultlibs is used.


> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden
> On Behalf Of Larry Barello
> Sent: Tuesday, May 17, 2005 3:11 PM
> To: AVR GCC List
> Subject: [avr-gcc-list] How to skip c-runtime init
> I would like to use GCC and skip the c-runtime init module
> completely (I'll initialize my few variables at the start of
> "main()").  I am writing a bootloader, of course...
> I vaguely recall doing this in the past, but cannot remember
> how it is done, nor find it in the libc FAQ.
> TIA.
> ----
> Larry Barello
> http://www.barello.net
> _______________________________________________
> AVR-GCC-list mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/avr-gcc-list

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