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Re: [patch] Allow building libgfortran as a DLL

From: Dave Korn <dave dot korn dot cygwin at googlemail dot com>
To: FX <fxcoudert at gmail dot com>
Cc: Dave Korn <dave dot korn dot cygwin at googlemail dot com>, Steve Kargl <sgk at troutmask dot apl dot washington dot edu>, tprince at computer dot org, Tobias Burnus <tobias dot burnus at physik dot fu-berlin dot de>, fortran at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
Date: Sun, 09 Aug 2009 19:04:45 +0100
Subject: Re: [patch] Allow building libgfortran as a DLL
References: <20090803065932.GA6467@physik.fu-berlin.de> <4A78085F.6010703@gmail.com> <4A78342C.8050509@aol.com> <4A783CD7.2060206@gmail.com> <20090804192302.GA37435@troutmask.apl.washington.edu> <4A7967A2.6000802@gmail.com> <65A585F8-5327-472D-BA9C-C219E5561E53@gmail.com> <4A7EFF0F.9000409@gmail.com> <ABC0D9CA-1C74-465A-958E-E02D839C9013@gmail.com>

FX wrote:
>>  If you wanted to do something about that, recent versions of ld(**) will
>> accept an ELF version script on PE platforms.  No actual symbol
>> versioning
>> happens (yet?), but it acts as a filter on the auto-export feature so
>> that only
>> the symbols that are supposed to be visible get exported.  (I intend
>> to do this
>> for libstdc++ as a follow-on patch once I've got the initial DLL
>> support committed.)
> 
> It turns out it's what happened for my tests with the cross-compiler (as
> I stated in http://gcc.gnu.org/ml/fortran/2009-07/msg00254.html, though
> I did not analyse it further). This is good to know.

  Ah, I missed that.

  For users with older versions of LD, it will silently ignore the version
script.  Not sure if you want to worry about that or not.

    cheers,
      DaveK

References:
- Re: [patch] Allow building libgfortran as a DLL
  - From: Tobias Burnus
- Re: [patch] Allow building libgfortran as a DLL
  - From: Dave Korn
- Re: [patch] Allow building libgfortran as a DLL
  - From: Tim Prince
- Re: [patch] Allow building libgfortran as a DLL
  - From: Dave Korn
- Re: [patch] Allow building libgfortran as a DLL
  - From: Steve Kargl
- Re: [patch] Allow building libgfortran as a DLL
  - From: Dave Korn
- Re: [patch] Allow building libgfortran as a DLL
  - From: FX
- Re: [patch] Allow building libgfortran as a DLL
  - From: Dave Korn
- Re: [patch] Allow building libgfortran as a DLL
  - From: FX

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