GCC Compile error with v1-8 [SOLVED]

[merlinblack]

After updating my copy of ogre I found there is a compile error in OgreImage.cpp which is easily fixed by adding

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#include <OgreMath.h>

What struck me as odd, was that it looks like it might have been like that for a little while. Is it working for everyone else without the include?

This seems to only affect v1-8. I'm using GNU gcc 4.6.1 on Ubuntu Linux.

Here are the errors:

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/home/nigel/prog/ogre/OgreMain/src/OgreImage.cpp: In static member function ‘static void Ogre::Image::applyGamma(Ogre::uchar*, Ogre::Real, size_t, Ogre::uchar)’:
/home/nigel/prog/ogre/OgreMain/src/OgreImage.cpp:557:13: error: incomplete type ‘Ogre::Math’ used in nested name specifier
/home/nigel/prog/ogre/OgreMain/src/OgreImage.cpp:558:13: error: incomplete type ‘Ogre::Math’ used in nested name specifier
/home/nigel/prog/ogre/OgreMain/src/OgreImage.cpp:559:13: error: incomplete type ‘Ogre::Math’ used in nested name specifier

I would send a patch - however I don't have access to a scanner or fax to do the contributor form at the moment.

Merry Christmas if you celebrate it!

[Shockeye]

I had the same problem, compiling on Ubuntu. But no problems on Windows (VC2008)
I wonder if there is a gcc compiler flag that would make a difference?
(I've only just start experimenting with Linux, so I haven't a clue...)

[merlinblack]

My hunch is that there isn't a flag you can tweak, since this is an error rather than a warning. I wonder if it is GCC in general or just this version. I'll try it on OSX10.6 and see what happens.

I must have only narrowly missed your post while searching!

EDIT: According to my twitter feed, David has patched it. Thanks!

[JDongian]

I'm quite sure this isn't fixed yet, as when I was building 1.8 recently on Arch Linux, I ran into this issue and needed to add the #include manually myself.