Re: [Openexr-user] Missing Cg for Viewers, was: missing half.h?

[Piotr Stanczyk]

Hi Bill, 

Sorry for the delay in getting back to you.  I spent some time playing around 
on my system here. I downloaded the latest Cg toolkit,  Feb2011, and added that 
to the --with-cg-prefix option to the ./configure command. 

I tried various installation locations of the Cg toolkit to test this out and I 
get the build coming out just fine.

Looking at your log it looks like the GLU library cannot be found, do you have 
that installed in a specific location that the configure script cannot see?

Piotr




________________________________________
From: Bill Elswick address@hidden
Sent: 08 July 2011 16:16
To: Piotr Stanczyk
Cc: address@hidden
Subject: RE: [Openexr-user] Missing Cg for Viewers, was: missing half.h?

Hi Piotr,

Here is the relevant part of the configure script output:


> ./configure: line 20679: dnlCG_LD: command not found
> checking for Cg... no
> *** The Cg test program could not be compiled.
> *** Possible reasons:
> ***     - The Cg libraries and includes are not installed.
> ***     - configure cannot find Cg (use the
> ***       --with-cg-prefix option to tell configure where
> ***       to find it).
> ***     - Your version of Cg is out of date.  Please update it
> ***       to the latest version.
> ***
> *** The exrdisplay program will not be built with fragment shader
> *** support because the fragment shader support depends on Cg.

And here is the relevant part of config.log:

> configure:20706: checking for Cg
> configure:20807: g++ -o conftest -g -O2   -lGL -lCg -lCgGL -lGLU -lpthread 
> -lglut conftest.cc  >&5
> /usr/bin/ld: cannot find -lGLU
> collect2: ld returned 1 exit status
> configure:20813: $? = 1
> configure: failed program was:
> | /* confdefs.h.  */
> |
> | #define PACKAGE_NAME "OpenEXR_Viewers"
> | #define PACKAGE_TARNAME "openexr_viewers"
> | #define PACKAGE_VERSION "1.0.2"
> | #define PACKAGE_STRING "OpenEXR_Viewers 1.0.2"
> | #define PACKAGE_BUGREPORT ""
> | #define PACKAGE "openexr_viewers"
> | #define VERSION "1.0.2"
> | #ifdef __cplusplus
> | extern "C" void exit (int) throw ();
> | #endif
> | #define STDC_HEADERS 1
> | #define HAVE_SYS_TYPES_H 1
> | #define HAVE_SYS_STAT_H 1
> | #define HAVE_STDLIB_H 1
> | #define HAVE_STRING_H 1
> | #define HAVE_MEMORY_H 1
> | #define HAVE_STRINGS_H 1
> | #define HAVE_INTTYPES_H 1
> | #define HAVE_STDINT_H 1
> | #define HAVE_UNISTD_H 1
> | #define HAVE_DLFCN_H 1
> | /* end confdefs.h.  */
> |
> |     #include <GL/gl.h>
> |     #include <Cg/cg.h>
> |     #include <Cg/cgGL.h>
> | int
> | main ()
> | {
> |
> |         cgCreateContext ();
> |
> |   ;
> |   return 0;
> | }
> configure:20854: result: no
>

Thanks,
--Bill

On Fri, 2011-07-08 at 05:35 +0000, Piotr Stanczyk wrote:
> Hi Bill,
>
> what are you seeing in the log file?
> I'll check those missing includes for the viewers project; I though we 
> scrubbed that one for those too  ... (seems earlier versions of gcc were more 
> sympathetic to these)
>
> Piotr
>
> ________________________________________
> From: address@hidden address@hidden on behalf of Bill Elswick address@hidden
> Sent: 07 July 2011 16:12
> To: David Doria; address@hidden
> Subject: [Openexr-user] Missing Cg for Viewers, was: missing half.h?
>
> At 03:03 PM 7/7/2011, David Doria wrote:
> >When building OpenEXR, it complained that memset was not defined, so I
> >had to add #include <cstring> to OpenEXR/ImathMatrix.
> >
> >Then memcpy was not defined in exrenvmap/blurImage.cpp which could
> >again be fixed with: #include <cstring>
>  >
> We just ran into these two same problems, in our case the solution
> was to #include <string.h> which seemed reasonable since memset and
> memcpy are C library functions. This is on Ubuntu 10.04.02
>
> Does anyone know what version or package of Cg is required to make
> openexr_viewers? Configure can't find it and unfortunately it does
> not indicate specifically what is needed. We installed the NVidia Cg
> Toolkit Installer from the Ubuntu repo and ran it, and it seems to
> have worked, but the configure script still says it can't find Cg.
>
> Thanks,
> --Bill
>
>
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