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diff --git a/src/mapi/glapi/gen/apiexec.py b/src/mapi/glapi/gen/apiexec.py
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+++ b/src/mapi/glapi/gen/apiexec.py
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+# Copyright (C) 2015 Intel Corporation
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+class exec_info():
+    """Information relating GL APIs to a function.
+
+    Each of the four attributes of this class, compatibility, core, es1, and
+    es2, specify the minimum API version where a function can possibly exist
+    in Mesa.  The version is specified as an integer of (real GL version *
+    10).  For example, glCreateProgram was added in OpenGL 2.0, so
+    compatibility=20 and core=31.
+
+    If the attribute is None, then it cannot be supported by that
+    API.  For example, glNewList was removed from core profiles, so
+    compatibility=10 and core=None.
+
+    Each of the attributes that is not None must have a valid value.  The
+    valid ranges are:
+
+        compatiblity: [10, 30]
+        core: [31, )
+        es1: [10, 11]
+        es2: [20, )
+
+    These ranges are enforced by the constructor.
+    """
+    def __init__(self, compatibility=None, core=None, es1=None, es2=None):
+        if compatibility is not None:
+            assert isinstance(compatibility, int)
+            assert compatibility >= 10
+            assert compatibility <= 30
+
+        if core is not None:
+            assert isinstance(core, int)
+            assert core >= 31
+
+        if es1 is not None:
+            assert isinstance(es1, int)
+            assert es1 == 10 or es1 == 11
+
+        if es2 is not None:
+            assert isinstance(es2, int)
+            assert es2 >= 20
+
+        self.compatibility = compatibility
+        self.core = core
+        self.es1 = es1
+        self.es2 = es2
+
+functions = {
+    # OpenGL 3.1 / GL_ARB_texture_buffer_object.  Mesa only exposes this
+    # extension with core profile.
+    "TexBuffer": exec_info(core=31),
+
+    # OpenGL 3.2 / GL_ARB_geometry_shader4.  Mesa does not support
+    # GL_ARB_geometry_shader4, so OpenGL 3.2 is required.
+    "FramebufferTexture": exec_info(core=32),
+
+    # OpenGL 4.0 / GL_ARB_gpu_shader_fp64.  The extension spec says:
+    #
+    #     "OpenGL 3.2 and GLSL 1.50 are required."
+    "Uniform1d": exec_info(core=32),
+    "Uniform2d": exec_info(core=32),
+    "Uniform3d": exec_info(core=32),
+    "Uniform4d": exec_info(core=32),
+    "Uniform1dv": exec_info(core=32),
+    "Uniform2dv": exec_info(core=32),
+    "Uniform3dv": exec_info(core=32),
+    "Uniform4dv": exec_info(core=32),
+    "UniformMatrix2dv": exec_info(core=32),
+    "UniformMatrix3dv": exec_info(core=32),
+    "UniformMatrix4dv": exec_info(core=32),
+    "UniformMatrix2x3dv": exec_info(core=32),
+    "UniformMatrix2x4dv": exec_info(core=32),
+    "UniformMatrix3x2dv": exec_info(core=32),
+    "UniformMatrix3x4dv": exec_info(core=32),
+    "UniformMatrix4x2dv": exec_info(core=32),
+    "UniformMatrix4x3dv": exec_info(core=32),
+    "GetUniformdv": exec_info(core=32),
+
+    # OpenGL 4.1 / GL_ARB_vertex_attrib_64bit.  The extension spec says:
+    #
+    #     "OpenGL 3.0 and GLSL 1.30 are required.
+    #
+    #     ARB_gpu_shader_fp64 (or equivalent functionality) is required."
+    #
+    # For Mesa this effectively means OpenGL 3.2 is required.  It seems
+    # unlikely that Mesa will ever get support for any of the NV extensions
+    # that add "equivalent functionality."
+    "VertexAttribL1d": exec_info(core=32),
+    "VertexAttribL2d": exec_info(core=32),
+    "VertexAttribL3d": exec_info(core=32),
+    "VertexAttribL4d": exec_info(core=32),
+    "VertexAttribL1dv": exec_info(core=32),
+    "VertexAttribL2dv": exec_info(core=32),
+    "VertexAttribL3dv": exec_info(core=32),
+    "VertexAttribL4dv": exec_info(core=32),
+    "VertexAttribLPointer": exec_info(core=32),
+    "GetVertexAttribLdv": exec_info(core=32),
+
+    # OpenGL 4.1 / GL_ARB_viewport_array.  The extension spec says:
+    #
+    #     "OpenGL 3.2 or the EXT_geometry_shader4 or ARB_geometry_shader4
+    #     extensions are required."
+    #
+    # Mesa does not support either of the geometry shader extensions, so
+    # OpenGL 3.2 is required.
+    "ViewportArrayv": exec_info(core=32),
+    "ViewportIndexedf": exec_info(core=32),
+    "ViewportIndexedfv": exec_info(core=32),
+    "ScissorArrayv": exec_info(core=32),
+    "ScissorIndexed": exec_info(core=32),
+    "ScissorIndexedv": exec_info(core=32),
+    "DepthRangeArrayv": exec_info(core=32),
+    "DepthRangeIndexed": exec_info(core=32),
+    # GetFloati_v also GL_ARB_shader_atomic_counters
+    # GetDoublei_v also GL_ARB_shader_atomic_counters
+
+    # OpenGL 4.3 / GL_ARB_texture_buffer_range.  Mesa can expose the extension
+    # with OpenGL 3.1.
+    "TexBufferRange": exec_info(core=31),
+}