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digitalmars.D.learn - pragma, dlls, etc

reply Robby <robby.lansaw gmail.com> writes:
I've spent the past couple of hours beating my head around this so I 
thought I would see if I can get some help.

Considering the following directory structure:

a/
   b/
   compile.bat
     c/
       d/
         my.dll
       main.d

compile.bat:

dmd -run b/c/main.d  -I../b -I../b/c/d/
pause

in main.d I have
pragma (lib, r"b/c/d/my.dll");

and I get Not a valid library file

Obviously there is, but is there something I'm missing?

I know I can put the dll in the system path and work on it from there, 
but doing so ruins all portability I'm striving for, any pointers?
Feb 06 2007
next sibling parent reply Mike Parker <aldacron71 yahoo.com> writes:
Robby wrote:
 I've spent the past couple of hours beating my head around this so I 
 thought I would see if I can get some help.
 
 Considering the following directory structure:
 
 a/
   b/
   compile.bat
     c/
       d/
         my.dll
       main.d
 
 compile.bat:
 
 dmd -run b/c/main.d  -I../b -I../b/c/d/
 pause
 
 in main.d I have
 pragma (lib, r"b/c/d/my.dll");
 
 and I get Not a valid library file
 
 Obviously there is, but is there something I'm missing?

You need to create an import library (my.lib) and link to that. DMD doesn't link directly to DLLs. In fact, most C and C++ compilers do not do this on Windows, either. MingW is the only one I know of that accepts DLLs on the command line in place of library archives.
Feb 07 2007
parent reply Robby <robby.lansaw gmail.com> writes:
Mike Parker wrote:
 Robby wrote:
 I've spent the past couple of hours beating my head around this so I 
 thought I would see if I can get some help.

 Considering the following directory structure:

 a/
   b/
   compile.bat
     c/
       d/
         my.dll
       main.d

 compile.bat:

 dmd -run b/c/main.d  -I../b -I../b/c/d/
 pause

 in main.d I have
 pragma (lib, r"b/c/d/my.dll");

 and I get Not a valid library file

 Obviously there is, but is there something I'm missing?

You need to create an import library (my.lib) and link to that. DMD doesn't link directly to DLLs. In fact, most C and C++ compilers do not do this on Windows, either. MingW is the only one I know of that accepts DLLs on the command line in place of library archives.

I've ran implib.exe against it and generated a my.lib file which I've put into the same directory as my.dll, and when I use: pragma (lib, r"b/c/d/my.lib"); I get an alert box stating "This application has failed to start because my.dll was not found" Sorry, that was in my draft.. didn't make it into the post though
Feb 07 2007
parent reply Kirk McDonald <kirklin.mcdonald gmail.com> writes:
Robby wrote:
 Mike Parker wrote:
 
 Robby wrote:

 I've spent the past couple of hours beating my head around this so I 
 thought I would see if I can get some help.

 Considering the following directory structure:

 a/
   b/
   compile.bat
     c/
       d/
         my.dll
       main.d

 compile.bat:

 dmd -run b/c/main.d  -I../b -I../b/c/d/
 pause

 in main.d I have
 pragma (lib, r"b/c/d/my.dll");

 and I get Not a valid library file

 Obviously there is, but is there something I'm missing?

You need to create an import library (my.lib) and link to that. DMD doesn't link directly to DLLs. In fact, most C and C++ compilers do not do this on Windows, either. MingW is the only one I know of that accepts DLLs on the command line in place of library archives.

I've ran implib.exe against it and generated a my.lib file which I've put into the same directory as my.dll, and when I use: pragma (lib, r"b/c/d/my.lib"); I get an alert box stating "This application has failed to start because my.dll was not found" Sorry, that was in my draft.. didn't make it into the post though

Windows expects to find the DLL in the same directory as the .exe, or in your Windows\system32 directory. -- Kirk McDonald Pyd: Wrapping Python with D http://pyd.dsource.org
Feb 07 2007
parent Max Samukha <samukha voliacable.com> writes:
On Wed, 7 Feb 2007 21:24:19 +0000 (UTC), John Reimer
<terminal.node gmail.com> wrote:

On Wed, 07 Feb 2007 00:43:00 -0800, Kirk McDonald wrote:

 Robby wrote:
 Mike Parker wrote:
 
 Robby wrote:

 I've spent the past couple of hours beating my head around this so I 
 thought I would see if I can get some help.

 Considering the following directory structure:

 a/
   b/
   compile.bat
     c/
       d/
         my.dll
       main.d

 compile.bat:

 dmd -run b/c/main.d  -I../b -I../b/c/d/
 pause

 in main.d I have
 pragma (lib, r"b/c/d/my.dll");

 and I get Not a valid library file

 Obviously there is, but is there something I'm missing?

You need to create an import library (my.lib) and link to that. DMD doesn't link directly to DLLs. In fact, most C and C++ compilers do not do this on Windows, either. MingW is the only one I know of that accepts DLLs on the command line in place of library archives.

I've ran implib.exe against it and generated a my.lib file which I've put into the same directory as my.dll, and when I use: pragma (lib, r"b/c/d/my.lib"); I get an alert box stating "This application has failed to start because my.dll was not found" Sorry, that was in my draft.. didn't make it into the post though

Windows expects to find the DLL in the same directory as the .exe, or in your Windows\system32 directory.

I believe windows will also look in a executable path set in the PATH environment.

And in the Windows and Windows\system directories
Feb 08 2007
prev sibling parent John Reimer <terminal.node gmail.com> writes:
On Wed, 07 Feb 2007 00:43:00 -0800, Kirk McDonald wrote:

 Robby wrote:
 Mike Parker wrote:
 
 Robby wrote:

 I've spent the past couple of hours beating my head around this so I 
 thought I would see if I can get some help.

 Considering the following directory structure:

 a/
   b/
   compile.bat
     c/
       d/
         my.dll
       main.d

 compile.bat:

 dmd -run b/c/main.d  -I../b -I../b/c/d/
 pause

 in main.d I have
 pragma (lib, r"b/c/d/my.dll");

 and I get Not a valid library file

 Obviously there is, but is there something I'm missing?

You need to create an import library (my.lib) and link to that. DMD doesn't link directly to DLLs. In fact, most C and C++ compilers do not do this on Windows, either. MingW is the only one I know of that accepts DLLs on the command line in place of library archives.

I've ran implib.exe against it and generated a my.lib file which I've put into the same directory as my.dll, and when I use: pragma (lib, r"b/c/d/my.lib"); I get an alert box stating "This application has failed to start because my.dll was not found" Sorry, that was in my draft.. didn't make it into the post though

Windows expects to find the DLL in the same directory as the .exe, or in your Windows\system32 directory.

I believe windows will also look in a executable path set in the PATH environment.
Feb 07 2007