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Re: Linking EFI applications with x86_64-pc-mingw32-ld

2012/4/2 Shea Levy <>:
> On 04/02/2012 03:50 PM, Kai Tietz wrote:
>> 2012/4/2 Andreas Schwab<>:
>>> NightStrike<> ?writes:
>>>> I don't know the answer to your question, but at the very least, you
>>>> should try using the x86_64-w64-mingw32 target. ?Notice that the
>>>> middle part of the triplet is not -pc-.
>>> The vendor part of the triplet is just for information.
>>> Andreas.
>> Right, ?the vendor-part in triplet for binutils is just for
>> information. ?But yes, it is possible to link EFI COFF code by it.
>> You need to specify the proper entry-point (by -e option) and you need
>> to set the proper sub-system ?There are pre-defined aliases for
>> sub-systems
>> "native" (1)
>> "windows" (2)
>> "console" (3)
>> "posix" (7)
>> "wince" (9)
>> "xbox" (14)
>> So can specify subsystem by ld's option '-subsystem=". ?The argument
>> of this option is either one of the strings above or a number.
>> Regards,
>> Kai
> Thanks, this is getting me closer to what I want. Now, I have an object file
> that just has a .text section, but, when linked with x86_64-w64-mingw32-ld
> -e main -subsystem=10, a .idata section is added. Additionally, .text is
> extended with several zeros (for alignment I'm guessing?) and the symbol
> table is claiming there's a (completely 0-filled) __CTOR_LIST__ and
> __DTOR_LIST__ in the middle of the added 0s. Can the added section and
> padding be safely removed?
> Cheers,
> Shea Levy

Sure, they can.  Best would be if you are using a specific spec-file
for ld here.  (see option -T script-file).  By it you can tell ld not
to generate __CTOR_LIST__, DTOR_LIST, and/or specific other section.
Also you can change by it the section alignments and other stuff.


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