From: Anders Norlander <anorland@hem2.passagen.se>
To: "Richard Hellicar (EML)" <Rick.Hellicar@eml.ericsson.se>
Cc: "'cygwin@sourceware.cygnus.com'" <cygwin@sourceware.cygnus.com>
Subject: Re: import libraries for 3rd-party DLLs
Date: Thu, 11 Mar 1999 00:23:00 -0000 [thread overview]
Message-ID: <36E77B04.6F9A36F7@hem2.passagen.se> (raw)
In-Reply-To: <5F052F2A01FBD11184F00008C7A4A8005D57E7@eukbant101.ericsson.se>
Richard Hellicar (EML) wrote:
>
> Hello,
>
>
> I'm trying to create an "import library" to allow me to use gcc with a
> third-party DLL.
> I tried the .lib files supplied with the DLL, but neither worked (one was
> for MS, which
> did compile, but complained about entry points when executed, the other for
> Borland).
>
> The Cygwin User's Guide (Delorie, Humblet, Noer) suggests a method in
> Chapter 4
> ("Linking against DLLs"). However, if I run nm on *any* dll, not just the
> one I'm trying
> to use, it tells me "No symbols in xyz.dll"
The method suggested in the user's guide doesn't work if the
dll is stripped. (Hint: shouldn't this be mentioned in the ug?).
> 1. Should I expect either the MS or Borland .lib files to be compatible ?
Generally, no, and certainly not Borland lib files.
There are, however, patches to make gnu tools more MS compatible.
> 2. Is there a way of converting incompatible lib files ?
Depends on which format it is and if it is an import library
or a regular object library. At least in MSVC 6, I think MS
changed the format for import libraries and possibly other .lib
files as well. This stops the `nm ...' method of creating def
files from MS import libraries from working.
> 3. Why doesn't nm find symbols in *any* DLL (try: for i in
> /winnt/system32/*.DLL; do nm $i; done)
See above
> 4. exactly what *is* supposed to be in a .def file; should the @4,@8 stuff
> be in
> there or not ? Semi-colons ?
The @x are the total size of the parameters passed to a function using
the stdcall (standard win32) calling convention. Those functions are
decorated that way by the compiler.
Semi-colons are comments.
Regards,
Anders
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WARNING: multiple messages have this Message-ID
From: Anders Norlander <anorland@hem2.passagen.se>
To: "Richard Hellicar (EML)" <Rick.Hellicar@eml.ericsson.se>
Cc: "'cygwin@sourceware.cygnus.com'" <cygwin@sourceware.cygnus.com>
Subject: Re: import libraries for 3rd-party DLLs
Date: Wed, 31 Mar 1999 19:45:00 -0000 [thread overview]
Message-ID: <36E77B04.6F9A36F7@hem2.passagen.se> (raw)
Message-ID: <19990331194500.u1JqnfFBi8dFDAI_ZKAtBvsa9RTik2DDRsdxZUmQZb8@z> (raw)
In-Reply-To: <5F052F2A01FBD11184F00008C7A4A8005D57E7@eukbant101.ericsson.se>
Richard Hellicar (EML) wrote:
>
> Hello,
>
>
> I'm trying to create an "import library" to allow me to use gcc with a
> third-party DLL.
> I tried the .lib files supplied with the DLL, but neither worked (one was
> for MS, which
> did compile, but complained about entry points when executed, the other for
> Borland).
>
> The Cygwin User's Guide (Delorie, Humblet, Noer) suggests a method in
> Chapter 4
> ("Linking against DLLs"). However, if I run nm on *any* dll, not just the
> one I'm trying
> to use, it tells me "No symbols in xyz.dll"
The method suggested in the user's guide doesn't work if the
dll is stripped. (Hint: shouldn't this be mentioned in the ug?).
> 1. Should I expect either the MS or Borland .lib files to be compatible ?
Generally, no, and certainly not Borland lib files.
There are, however, patches to make gnu tools more MS compatible.
> 2. Is there a way of converting incompatible lib files ?
Depends on which format it is and if it is an import library
or a regular object library. At least in MSVC 6, I think MS
changed the format for import libraries and possibly other .lib
files as well. This stops the `nm ...' method of creating def
files from MS import libraries from working.
> 3. Why doesn't nm find symbols in *any* DLL (try: for i in
> /winnt/system32/*.DLL; do nm $i; done)
See above
> 4. exactly what *is* supposed to be in a .def file; should the @4,@8 stuff
> be in
> there or not ? Semi-colons ?
The @x are the total size of the parameters passed to a function using
the stdcall (standard win32) calling convention. Those functions are
decorated that way by the compiler.
Semi-colons are comments.
Regards,
Anders
--
Want to unsubscribe from this list?
Send a message to cygwin-unsubscribe@sourceware.cygnus.com
next prev parent reply other threads:[~1999-03-11 0:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-03-10 9:00 Richard Hellicar (EML)
1999-03-11 0:23 ` Anders Norlander [this message]
1999-03-31 19:45 ` Anders Norlander
1999-03-31 19:45 ` Richard Hellicar (EML)
1999-03-10 9:39 Jim.Totten
1999-03-31 19:45 ` Jim.Totten
1999-03-11 2:14 Rik Hellicar
1999-03-31 19:45 ` Rik Hellicar
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