Re: [GtkGLExt] Problems getting gtkglext to work under Cygwin

["Douglas A. Vechinski" <douglas vechinski dynetics com>]

Naofumi Yasufuku wrote:

> On 04.2.27 5:09 AM, "Douglas A. Vechinski" <douglas vechinski dynetics com>
> wrote:
>  
>
> > I have also tried downloading the gtkglext-win32-1.0.5.zip file from
> > sourceforge which I thought would be a precompiled version that I could
> > use under Cygwin.  Unzipped the files in /usr/local.  I then try
> > compiling siimple.c.  It compiled with no errors.  However when I tried
> > executing it I get an error that it was unable to located
> > libgdk-win32-2.0-0.dll.  There is a libgdk-win32-2.0.dll.a under /lib
> > but it doesn't seem to work.
> >
> >    
>
> You have to set DLL path to PATH environment variable. If you are using
> Tor's win32 GTK+ binary, DLLs are located under bin/ directory.
>
> Regards,
> --Naofumi

I had also downloaded Tor'x GTK+ binarys and had the PATH environment 
variable set  but still had problems.  I was trying to used pre-compiled 
binaries  of the packages and only resorted to trying to compile 
GtkGLext when I was having problems.

Okay, let me reiterate my goals.  My primary goal is to be able to 
compile a gtkglext code under the Cygwin environment so that the 
executable run under win32 (i.e. so an Xserver is not necessary).  My 
secondary goal is they same as my primary goal plus being able to throw 
the -mno-cygwin flag so that the executable does not require the 
cygwin1.dll.

Now, I downloaded precompiled packages atk, pango, glib, gtk+ from 
http://web.sfc.keio.ac.jp/~s01397ms/cygwin had the cygwin setup 
installer install them.  I have been able to compile some gtk+ examples 
which appear to run under win32 (i.e. I used `pkg-config --cflags --libs 
gtk+-win32-2.0`).

Next, I downloaded the pre-compiled gtkglext-win32-1.0.5.zip file from 
sourceforge and unzipped then under /usr/local on my Cygwin 
installation.  I then changed the prefix line to /usr/local for 
/usr/local/lib/pkgconfig/gdkglext-win32-1.0.pc and 
/usr/local/lib/pkgconfig/gtkglext-win32-1.0.pc

When I try compiling a simple gtkglext example, (using gcc -o simple 
simple.c `pkg-config --cflags --libs gtkglext-win32-1.0`)  it compiles 
but when executed it complains that it can't find 
libgdk-win32-2.0-0.dll.  The closest file I have is 
libgdk-win32-2.0.dll.a under the /lib under cygwin and I have 
c:\cygwin\bin and c:\cygwin\lib and c:\cygwin\usr\local\bin include in 
my windows PATH environment variable.

So my questions are:

Should it be possible to achieve my primary goal with the pre-compiled 
packages I described above? 

If so, does my description of their installation sound right and the 
alteration of the .pc files?

If so, why does the resulting executable want the extra -0 in the name 
of the libgdk file?

Assuming I can get something working, what effect will trying to compile 
with -mno-cygwin have on compiling and execution?

If the above setup won't work for some reason, what do I need to do as 
far as setup inorder to use Tor's GTK+ binarys but compiling under 
Cygwin?  Would this route be more "desirable" for end-users, i.e. the 
people who just want to run/use the code.  Would they just need to 
install Tor's dlls and set the PATH appropriately?

Lot's of questions, I hope I have provide enough details.  ( I had also 
made a brief stab at trying to get GtkGLext to work under X11 under 
Cygwin and had problems but I don't want to chase this rabbit just yet.  
Hopefully I can eventually get one of the above to work first.)