Morten Nobel's Blog

Compiling cross platform code can sometimes be tricky since the code often has to be modified slightly to satisfy different compilers. I’ll here describe the steps to compile the Irrlicht game engine for OS/X 10.8 Mountain Lion.

(Modified version of http://irrlicht3d.org/wiki/index.php?n=Main.InstallingIrrlicht )

Prerequisites: XCode 4.4 (or 4.5) installed. Install command line tools (Open XCode and goto preferences, choose the tab ‘Downloads’ and install next to the install line tools).

1. Download the Irrlicht SDK 1.7.3 LINK
2. Build the library (With Native Windowing Frameworks)
   1. Expand the archive, and navigate to ~/Downloads/irrlicht-1.7.3/source/Irrlicht/MacOSX
   2. Open MacOSX.xcodeproj with Xcode
   3. Select the build settings for the current project
      
   4. Change the following build settings (you may need to change from Basic to All in the line under build settings):
      1. Change Base SDK to Current OS X
      2. Change Architectures to Standard (32/64 bit Intel)
      3. Change Compiler for C/C++/Objective-C to LLVM GCC 4.2
   5. Do following changes in source code :
      1. CIrrDeviceMacOSX.mm:634 change to:
         GLint order = -1; // below window
      2. COpenGLSLMaterialRenderer.cpp:137-149 change to code block below
   6. Build all (this should create irrlicht/source/Irrlicht/MacOSX/build/Release/libIrrlicht.a )
3. Install the library and headers:
   1. Open the Terminal and type: sudo cp ~/Downloads/irrlicht-1.7.3/source/Irrlicht/MacOSX/build/Release/libIrrlicht.a /usr/local/lib/
   2. Type: sudo cp -r ~/Downloads/irrlicht-1.7.3/include /usr/local/include/irrlicht

___

COpenGLSLMaterialRenderer.cpp:137-149:

#if defined(GL_ARB_geometry_shader4) || defined(GL_EXT_geometry_shader4) || defined(GL_NV_geometry_shader4)
long long pLong =reinterpret_cast<long long>(Program);
GLuint p = (GLuint)pLong;
Driver->extGlProgramParameteri(p, GL_GEOMETRY_INPUT_TYPE_EXT, Driver->primitiveTypeToGL(inType));
Driver->extGlProgramParameteri(p, GL_GEOMETRY_OUTPUT_TYPE_EXT, Driver->primitiveTypeToGL(outType));
if (verticesOut==0)
Driver->extGlProgramParameteri(p, GL_GEOMETRY_VERTICES_OUT_EXT, Driver->MaxGeometryVerticesOut);
else
Driver->extGlProgramParameteri(p, GL_GEOMETRY_VERTICES_OUT_EXT, core::min_(verticesOut, Driver->MaxGeometryVerticesOut));
#elif defined(GL_NV_geometry_program4)
if (verticesOut==0)
Driver->extGlProgramVertexLimit(GL_GEOMETRY_PROGRAM_NV, Driver->MaxGeometryVerticesOut);
else
Driver->extGlProgramVertexLimit(GL_GEOMETRY_PROGRAM_NV, core::min_(verticesOut, Driver->MaxGeometryVerticesOut));
#endif