How to manually load shaders in Ogre. Copied from http://www.ogre3d.org/forums/viewtopic.php?f=2&t=73197

ogre_shaders.cpp

    Ogre::HighLevelGpuProgramPtr vertex = Ogre::HighLevelGpuProgramManager::getSingletonPtr()->createProgram( "basicVS", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, "glsl", Ogre::GpuProgramType::GPT_VERTEX_PROGRAM);
             vertex->setSourceFile( "basic.vert" );

             Ogre::HighLevelGpuProgramPtr fragment = Ogre::HighLevelGpuProgramManager::getSingletonPtr()->createProgram( "basicFS", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, "glsl", Ogre::GpuProgramType::GPT_FRAGMENT_PROGRAM);
             fragment->setSourceFile( "basic.frag" );

             //Creating new material
             Ogre::MaterialPtr matPtr = Ogre::MaterialManager::getSingletonPtr()->create( "ProgramShader", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME );

             Ogre::Pass* pass = matPtr->getTechnique(0)->getPass(0);

             //pass settings
             pass->setLightingEnabled( false );
             
             pass->setVertexProgram( vertex->getName() );
             pass->setFragmentProgram( fragment->getName() );

             entity->setMaterialName( matPtr->getName() );