Bug 258319 – dev-games/ogre-1.6.1 fails to compile with gcc 4.3

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Franz Trischberger 2009-02-09 11:55:29 UTC]

I get the following error when trying to compile ogre:

###
OgreEXRCodecDll.cpp: In function 'void Ogre::dllStartPlugin()':                                                                                                      
OgreEXRCodecDll.cpp:37: error: cannot allocate an object of abstract type 'Ogre::EXRCodec'                                                                           
../../../PlugIns/EXRCodec/include/OgreEXRCodec.h:40: note:   because the following virtual functions are pure within 'Ogre::EXRCodec':                               
../../../OgreMain/include/OgreCodec.h:153: note:        virtual Ogre::String Ogre::Codec::magicNumberToFileExt(const char*, size_t) const                            
make[3]: *** [OgreEXRCodecDll.lo] Error 1                                                                                                                            
make[3]: *** Waiting for unfinished jobs....                                                                                                                         
make[3]: Leaving directory `/var/tmp/paludis/dev-games-ogre-1.6.1/work/ogre/PlugIns/EXRCodec/src'
###

This is how I tried to install it:

* dev-games/ogre [U 1.4.9 -> 1.6.1]
    cegui cg devil doc double-precision examples gtk openexr threads build_options: split strip

I think it is an upstream issue (not implemented a pure virtual function).

Reproducible: Always

[Comment 1 Mr. Bones. (RETIRED) 2009-02-09 19:19:26 UTC]

reopen with your emerge --info output

[Comment 2 Franz Trischberger 2009-02-09 21:20:48 UTC]

Created attachment 181487 [details]
paludis --info

Th eproblem is, tha Ogre::Codec defines a pure virtual function

		virtual String magicNumberToFileExt(const char *magicNumberPtr, size_t maxbytes) const = 0;

in OgreCodec.h, line 153.
And neither Ogre::ImageCodec, norOgre::EXRCodec implement this.
So in OgreEXRCodecDll.cpp line 37, when they try to instantiate a new object, this MUST fail...

mEXRCodec = new EXRCodec;

[Comment 3 Franz Trischberger 2009-02-09 21:24:50 UTC]

Created attachment 181488 [details]
emerge --info

[Comment 4 Franz Trischberger 2009-02-09 21:25:27 UTC]

Reopen with emerge --info

[Comment 5 Roman Karshiev 2009-02-11 08:45:06 UTC]

Created attachment 181611 [details]
Same error

[Comment 6 Roman Karshiev 2009-02-11 08:46:01 UTC]

Created attachment 181612 [details]
emerge --info

[Comment 7 Renan T. Inácio 2009-02-15 18:37:32 UTC]

It seems Ogre from 1.6.0 does not support the OpenEXR anymore, as EXR support is already provided in FreeImage: http://www.ogre3d.org/forums/viewtopic.php?f=2&t=45636

It compiles fine building with -openexr, but I didn't test for EXR capabilities.

[Comment 8 Roman Karshiev 2009-02-17 11:19:48 UTC]

> It compiles fine building with -openexr

Don't help to me :-/

[Comment 9 Alexey Antipovsky 2009-03-01 21:00:17 UTC]

(In reply to comment #8)

Try to unmerge any earlier version of Ogre fitst -- looks like problem is here

[Comment 10 Roman Karshiev 2009-03-06 08:27:20 UTC]

> Try to unmerge any earlier version of Ogre fitst

Do not help to me :(

[Comment 11 basic 2009-03-09 14:02:39 UTC]

afaik, the openexr code in ogre is no longer maintained, they use freeimage instead. Speaking of which, now that freeimage is no longer hardmasked, should the freeimage use flag be restored?

[Comment 12 Michael Prager 2009-04-11 11:34:52 UTC]

USE="-openexr freeimage" emerge ogre

works for me.

[Comment 13 Mr. Bones. (RETIRED) 2009-04-12 01:52:55 UTC]

Try 1.6.2.