SOLVED. Re: [Haskell-cafe] Linker Errors For OpenGL / GLUT 'Hello World' Program.

Hello,

ghc -package GLUT -lglut Hello1.hs -o Hello1 --- works!  :)

I'm not sure why I must specify "-package GLUT" and "-lglut" but that
prevents the linker errors.  Also, shouldn't configure correctly figure out
how to link the GLUT libraries?  Can someone explain?

Thank you.
__
Donnie

On Sat, Sep 20, 2008 at 9:47 PM, Donnie Jones <[email protected]> wrote:

> Hello Clifford,
>
> Thank you for the quick reply.
> I was able to get a test C program that draws a triangle with GLUT to work:
> gcc -lglut triangle.o -o triangle.exe
>
> However, when building the Haskell GLUT 'Hello World' it uses, -lGLU to
> link GLUT, but that does not work; however, from the config.log output
> configure seems to think that -lGL should work.  Is there a way I can change
> the build to use -lglut?  Maybe with configure I can specify that -lglut is
> the correct way to link the GLUT libraries?
>
> Thank you!
> __
> Donnie
>
> On Sat, Sep 20, 2008 at 3:42 PM, Clifford Beshers <
> [email protected]> wrote:
> It works for me.  I'm running Ubuntu Hardy with some packages built by us
> at SeeReason (see debs.seereason.com).
>
> It looks like ghc can't find your glut libraries (not the Haskell wrappers,
> but the real GLUT libs). Try 'ghc -v --make ' and look at the linking lines
> and see what GHC is specifying (mine shows a -lglut).  Try compiling an
> example C program against GLUT and see if that works.
>
> My package list looks like this:
> beshers@blue:~/haskell$ dpkg -l \*glut\*
> Desired=Unknown/Install/
>
> Remove/Purge/Hold
> |
> Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
> |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err:
> uppercase=bad)
> ||/ Name           Version        Description
>
> +++-==============-==============-============================================
> un  freeglut-dev   <none>         (no description available)
> ii  freeglut3      2.4.0-6        OpenGL Utility Toolkit
> ii  freeglut3-dev  2.4.0-6        OpenGL Utility Toolkit development files
> un  glut-doc       <none>         (no description available)
> un  glutg3         <none>         (no description available)
> un  glutg3-dev     <none>         (no description available)
> ii  libghc6-glut-d 2.1.1.1-2+3see Haskell GLUT binding for GHC
> un  libghc6-glut-d <none>         (no description available)
> un  libghc6-glut-p <none>         (no description available)
> un  libglut        <none>         (no description available)
> un  libglut-dev    <none>         (no description available)
> pn  libglut3       <none>         (no description available)
> un  libglut3-dev   <none>         (no description available)
>
>
>
> On Sat, Sep 20, 2008 at 1:13 PM, Donnie Jones <[email protected]> wrote:
>
>> Hello Brandon,
>>
>> On Sat, Sep 20, 2008 at 1:02 PM, Brandon S. Allbery KF8NH <
>> [email protected]> wrote:
>>
>>> On 2008 Sep 20, at 12:57, Donnie Jones wrote:
>>>
>>> checking GL/gl.h usability... yes
>>> checking GL/gl.h presence... yes
>>> checking for GL/gl.h... yes
>>> checking OpenGL/gl.h usability... no
>>> checking OpenGL/gl.h presence... no
>>> checking for OpenGL/gl.h... no
>>> checking GL/glu.h usability... yes
>>> checking GL/glu.h presence... yes
>>> checking for GL/glu.h... yes
>>> checking OpenGL/glu.h usability... no
>>> checking OpenGL/glu.h presence... no
>>> checking for OpenGL/glu.h... no
>>>
>>> That looks like to me that the gl.h and glu.h header files were found and
>>> are usable (in some cases).  I am able to build
>>>
>>>
>>> Yes, you have the header.  But it says nothing about whether -lGLU was
>>> found, and that's where your problems are.
>>> Also, that's configure output, not config.log output (which has a
>>> transcript of the tests, not just the summary).
>>>
>>>
>> ### Relevant lines that include "-lGL" or "-lGLU" in config.log ###
>> configure:4634: checking for GL library
>> configure:4670: gcc -o conftest -g -O2    conftest.c -lGL -lm   >&5
>> configure:4676: $? = 0
>> configure:4696: result: -lGL -lm
>> configure:4773: checking for GLU library
>> configure:4809: gcc -o conftest -g -O2    conftest.c -lglu32 -lGL -lm
>> >&5
>> /usr/bin/ld: cannot find -lglu32
>> collect2: ld returned 1 exit status
>> configure:4815: $? = 1
>> configure: failed program was:
>> | /* confdefs.h.  */
>> | #define PACKAGE_NAME "Haskell OpenGL package"
>> | #define PACKAGE_TARNAME "OpenGL"
>> | #define PACKAGE_VERSION "2.2.1"
>> | #define PACKAGE_STRING "Haskell OpenGL package 2.2.1"
>> | #define PACKAGE_BUGREPORT "[email protected]"
>> | /* end confdefs.h.  */
>> | #include <GL/glu.h>
>> | int
>> | main ()
>> | {
>> | gluNewQuadric()
>> |   ;
>> |   return 0;
>> | }
>> configure:4809: gcc -o conftest -g -O2    conftest.c -lGLU -lGL -lm   >&5
>> configure:4815: $? = 0
>> configure:4835: result: -lGLU -lGL -lm
>> ...
>> fp_cv_check_GLU_lib='-lGLU -lGL -lm '
>> fp_cv_check_GL_lib='-lGL -lm '
>> ...
>> GLU_LIBS=' -lGLU -lGL -lm '
>> ...
>> GL_LIBS=' -lGL -lm '
>> ...
>> #define GLU_LIBS "-lGLU" ,"-lGL" ,"-lm"
>> ########################################
>>
>> It seems like the OpenGL and GLUT libraries are found (after -lglu32
>> fails, I am using Debian Linux).  I am not sure what to try now.
>>
>> Thank you for the help.  :)
>> __
>> Donnie
>>
>>
>

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