Trouble compiling when using ogl-es branch of Irrlicht

[sunnystormy]

I tried compiling a test program that utilized the ogl-es branch, and this is the error that appeared in my console:

Code: Select all

../../Engine/irrlicht/lib/Linux/libIrrlicht.a(COGLESExtensionHandler.o): In function `irr::video::COGLES1ExtensionHandler::initExtensions()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/COGLESExtensionHandler.cpp:262: undefined reference to `eglGetProcAddress'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/COGLESExtensionHandler.cpp:263: undefined reference to `eglGetProcAddress'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/COGLESExtensionHandler.cpp:264: undefined reference to `eglGetProcAddress'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/COGLESExtensionHandler.cpp:265: undefined reference to `eglGetProcAddress'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/COGLESExtensionHandler.cpp:266: undefined reference to `eglGetProcAddress'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(COGLESExtensionHandler.o):/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/COGLESExtensionHandler.cpp:267: more undefined references to `eglGetProcAddress' follow
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::initialize(irr::SIrrlichtCreationParameters const&, irr::video::SExposedVideoData const&)':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:52: undefined reference to `eglGetDisplay'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:70: undefined reference to `eglInitialize'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::terminate()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:92: undefined reference to `eglMakeCurrent'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:94: undefined reference to `eglTerminate'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::generateSurface()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:164: undefined reference to `eglChooseConfig'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:253: undefined reference to `eglCreateWindowSurface'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:256: undefined reference to `eglCreateWindowSurface'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:263: undefined reference to `eglBindAPI'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:267: undefined reference to `eglSwapInterval'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::destroySurface()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:278: undefined reference to `eglMakeCurrent'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:280: undefined reference to `eglDestroySurface'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::generateContext()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:314: undefined reference to `eglCreateContext'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::destroyContext()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:333: undefined reference to `eglMakeCurrent'
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:334: undefined reference to `eglDestroyContext'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::activateContext(irr::video::SExposedVideoData const&)':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:341: undefined reference to `eglMakeCurrent'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::swapBuffers()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:358: undefined reference to `eglSwapBuffers'
../../Engine/irrlicht/lib/Linux/libIrrlicht.a(CEGLManager.o): In function `irr::video::CEGLManager::testEGLError()':
/home/michael/Code/CPlusPlus/Amanita/Engine/irrlicht/source/Irrlicht/CEGLManager.cpp:364: undefined reference to `eglGetError'
collect2: error: ld returned 1 exit status
make: *** [Makefile:12: make] Error 1

I wanted to some help in figuring this one out. I'm only using the OpenGL renderer in my code, yet, am getting a lot of errors for EGL. Thanks!

--EDIT:

I'm looking at the Makefile for Irrlicht, and I'm not seeing any includes or library paths for EGL, GLES, or GLES2... could this be the problem?

[CuteAlien]

Hm, not sure why you want to use the ogl-es branch without using OpenGL ES.
That's kinda the feature why this branch exists :-)
You could disable it in the IrrCompileConfig.h by commenting out _IRR_COMPILE_WITH_OGLES1_ and _IRR_COMPILE_WITH_OGLES2_. Or also by passing -DNO_IRR_COMPILE_WITH_OGLES1_ -DNO_IRR_COMPILE_WITH_OGLES2_ to the compiler (which disables those defines). But not sure if it's tested much, as this branch really is made for ES, so people might not have used it much with that disabled.

There's no paths on Linux because in Linux libraries tend to be installed in default paths, so includes are usually found.
The linking happens not in the library Makefile but in the Makefiles of the examples (or your project).
There you can have LDFLAGS like: -lGL -lEGL -lGLESv1_CM -lGLESv2

[sunnystormy]

Good point!

I was really just trying to get it to compile because I'm working on a project that will allow users to tap into OpenGL or OpenGL ES for the graphics backend.

Thanks for your help!