On 04/24/2018 09:24 PM, green wrote:
> linux versions 3.7, 3.8 and uberpov will not write or read EXR file formats.
> trying to write gives a command-line-option error, whereas trying to read an EXR
> gives a more useful
> 
> This unofficial POV-Ray  binary was built without support for the OpenEXR file
> format.  You must either  use an official POV-Ray binary or recompile the
> POV-Ray sources on a system  providing you with the OpenEXR library to make use
> of this facility.
>   Alternatively, you may use any of the following built-in formats: HDR.
> Fatal error in parser: Cannot open file.
> Render failed
> 
> how does one do that?
> 
> this is ubuntu 16.04  kernel 4.4.108, the following libraries are installed;
>     libopenexr-dev
>     libopenexr22
>     openexr
> and associated
>     libilmbase-dev
>     libilmbase12
> all of these are version 2.2.0-10ubuntu2
> 
> thank you.
> 
> 
works fine on my system:

POV-Ray 3.8.0-alpha.9322209.unofficial

Copyright 1991-2017 Persistence of Vision Raytracer Pty. Ltd.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Built-in features:
   I/O restrictions:          enabled
   X Window display:          enabled (using SDL)
   Supported image formats:   gif tga iff ppm pgm hdr png jpeg tiff openexr
   Unsupported image formats: -

Compilation settings:
   Build architecture:  x86_64-suse-linux-gnu
   Built/Optimized for: x86_64-suse-linux-gnu (using -march=native)
   Compiler vendor:     gnu
   Compiler version:    g++ -std=gnu++11 4.8
   Compiler flags:      -pipe -Wno-multichar -Wno-write-strings 
-fno-enforce-eh-specs -Wno-non-template-friend -s -O3 -ffast-math 
-march=native -pthread

and i sourced these libraries from opensuse repositories during build:

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