Linker script question and/or bug
Michael Eager
eager@eagercon.com
Mon Dec 25 09:34:00 GMT 2006
Nick Clifton wrote:
> Hi Michael,
>> This works if the symbol is defined before the linker
>> script, but not if it is in the other order:
>>
>> Works: ld -defsym _START=0x8000000 -Tscript.ld
>> Fails: ld -Tscript.ld -defsym _START=0x8000000
>>
>> This is because the linker script is parsed as soon
>> as the -T option is seen, rather than after all command
>> line options are processed. This is a problem because
>> gcc doesn't treat the default linker script the same
>> as one specified as a linker option: the default
>> linker script is passed early on the command line,
>> while options specified by -Wl,... are tagged on at
>> the end of the command line.
>
> Why not pass the linker script name as a gcc command line option as
> well. ie:
>
> gcc -Wl,-defym,_START=0x800000 -Wl,-Tscript.ld
That works. But if you specify the options in the
reverse order, it fails.
I'll post a patch which moves processing user-specified
linker scripts to the same place as default linker scripts.
--
Michael Eager eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306 650-325-8077
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