Hi! I'm working on generating stacktraces (in Linux) for unhandled exceptions and other situations for D1+Tango and I came across a problem that I can't find any way to fix but to do it in the compiler.

The problem is I need to pass -ldl to the linker, but for some reason it has to be passed *after* the standard library. Since DMD pass all the -L flags before it, I came up with a patch that adds a new -sL flag that places the passed flags at the end of the linking commands.

I know Walter is not a fan of compiler flags, but I really don't see other option (besides writing the linker command manually, which is not really a good option). If you know another way to fix this, please let me know. If not, please consider reviewing the patch and merging it after any needed changes. In particular I don't know what to do with the switch in windows, I don't know if this is needed and I don't know the windows linker flags, so in the patch I just placed these flags after the regular linker flags.

Thanks you.

(patch against DMD 1.071)

-- 
Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
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41% of all people take people with curly hair less seriously
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Could you add this in the form of a github pull request? Thanks!

On 11/1/2011 5:53 AM, Leandro Lucarella wrote:
> Hi! I'm working on generating stacktraces (in Linux) for unhandled exceptions and other situations for D1+Tango and I came across a problem that I can't find any way to fix but to do it in the compiler.
>
> The problem is I need to pass -ldl to the linker, but for some reason it has to be passed *after* the standard library. Since DMD pass all the -L flags before it, I came up with a patch that adds a new -sL flag that places the passed flags at the end of the linking commands.
>
> I know Walter is not a fan of compiler flags, but I really don't see other option (besides writing the linker command manually, which is not really a good option). If you know another way to fix this, please let me know. If not, please consider reviewing the patch and merging it after any needed changes. In particular I don't know what to do with the switch in windows, I don't know if this is needed and I don't know the windows linker flags, so in the patch I just placed these flags after the regular linker flags.
>
> Thanks you.
>

Does this mean the d1 implementation will be significantly different from the d2 implementation?  Why?

On Tue, 1 Nov 2011, Leandro Lucarella wrote:

> Date: Tue, 1 Nov 2011 09:53:02 -0300
> From: Leandro Lucarella <luca at llucax.com.ar>
> Reply-To: Discuss the internals of DMD <dmd-internals at puremagic.com>
> To: dmd-internals at puremagic.com
> Subject: [dmd-internals] [PATCH] Add -sL swith to pass linker flags at the end
>      of the linker command
> 
> Hi! I'm working on generating stacktraces (in Linux) for unhandled exceptions and other situations for D1+Tango and I came across a problem that I can't find any way to fix but to do it in the compiler.
> 
> The problem is I need to pass -ldl to the linker, but for some reason it has to be passed *after* the standard library. Since DMD pass all the -L flags before it, I came up with a patch that adds a new -sL flag that places the passed flags at the end of the linking commands.
> 
> I know Walter is not a fan of compiler flags, but I really don't see other option (besides writing the linker command manually, which is not really a good option). If you know another way to fix this, please let me know. If not, please consider reviewing the patch and merging it after any needed changes. In particular I don't know what to do with the switch in windows, I don't know if this is needed and I don't know the windows linker flags, so in the patch I just placed these flags after the regular linker flags.
> 
> Thanks you.
> 
> (patch against DMD 1.071)
> 
> -- 
> Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
> ----------------------------------------------------------------------
> GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145  104C 949E BFB6 5F5A 8D05)
> ----------------------------------------------------------------------
> 41% of all people take people with curly hair less seriously
> 
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Walter Bright, el  1 de noviembre a las 12:33 me escribiste:
> Could you add this in the form of a github pull request? Thanks!

http://permalink.gmane.org/gmane.comp.lang.d.dmd.devel/2530

Thank you.

-- 
Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
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GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145  104C 949E BFB6 5F5A 8D05)
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... los cuales son susceptibles a una creciente variedad de ataques previsibles,
tales como desbordamiento del tamp?n, falsificaci?n de par?metros, ...
	-- Stealth - ISS LLC - Seguridad de IT

Brad Roberts, el  1 de noviembre a las 14:13 me escribiste:
> Does this mean the d1 implementation will be significantly different from the d2 implementation?  Why?

I don't understand what are you talking about, but I would say no,
I don't see why it should be any differences between D1 and D2. In fact,
I just tried and it applies cleanly to the master branch too.

-- 
Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
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GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145  104C 949E BFB6 5F5A 8D05)
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If you don't know what direction you should take
You don't know where you are

Leandro Lucarella, el  7 de noviembre a las 09:05 me escribiste:
> Walter Bright, el  1 de noviembre a las 12:33 me escribiste:
> > Could you add this in the form of a github pull request? Thanks!
> 
> http://permalink.gmane.org/gmane.comp.lang.d.dmd.devel/2530

Crap. https://github.com/D-Programming-Language/dmd/pull/497

-- 
Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
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GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145  104C 949E BFB6 5F5A 8D05)
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Y vos, me dijiste que soy, un abismo de silencio.
Ser?, porque vos no escuchas, que yo grito por dentro.