Also, to support OpenGL ES 2, you’ll need to make various changes to panda/src/iphonedisplay, for instance you’ll need to edit it to request a GLES2 context instead of GLES1.
But unless you feel like writing a shader for every bit of geometry, I recommend just compiling with HAVE_GLES2 set to nothing and compiling with just OpenGL ES 1 for now.