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Subject: Re: Linking DXE3 with libraries
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On 1/28/23, Andris Pavenis (andris DOT pavenis AT iki DOT fi) [via
djgpp AT delorie DOT com] <djgpp AT delorie DOT com> wrote:
> I have not used DXE myself, so my thoughts could be inaccurate
>
> Some general thoughts:
>
> - DXE loader has no way to found symbols of running executable (which
> requests to load DXE) unless
> one tells where they are located

General issue

> - linking DXE directly with libraries (like libstdcxx.a or libc.a) will
> cause duplicate copy of symbols.

Linking with libc.a can be especially problematic.

However, if you have a dxe written in c++, and especially if your
exe is C-only, linking dxe with libstdc++ is a good thing

As for duplication of symbols: Well that's a known general issue
because djgpp libc is a static library.

> I tried to run DXE3RES under x86_64 Linux, but is seems that DXE3RES is
> broken when compiled for
> 64-bit systems:
>
> [andris AT ap ~]$ i686-pc-msdosdjgpp-dxe3res -o tmp.c
> /usr/i686-pc-msdosdjgpp/lib/libc.a
> /usr/i686-pc-msdosdjgpp/lib/libc.a: Exec format error

You should run dxe3res against a dxe module, not an archive,
like: dxe3gen -o tmp.c my.dxe

As for rest of your notes, I will try looking at them later.