The base interface for OpenGL enumerates, which provides you all the C-API style enumerates
static int
GL_1PASS_EXT
GL_1PASS_SGIS
GL_2_BYTES
GL_2D
GL_2PASS_0_EXT
GL_2PASS_0_SGIS
GL_2PASS_1_EXT
GL_2PASS_1_SGIS
GL_2X_BIT_ATI
GL_3_BYTES
GL_3D
GL_3D_COLOR
GL_3D_COLOR_TEXTURE
GL_3DFX_multisample
GL_3DFX_tbuffer
GL_3DFX_texture_compression_FXT1
GL_4_BYTES
GL_422_AVERAGE_EXT
GL_422_EXT
GL_422_REV_AVERAGE_EXT
GL_422_REV_EXT
GL_4D_COLOR_TEXTURE
GL_4PASS_0_EXT
GL_4PASS_0_SGIS
GL_4PASS_1_EXT
GL_4PASS_1_SGIS
GL_4PASS_2_EXT
GL_4PASS_2_SGIS
GL_4PASS_3_EXT
GL_4PASS_3_SGIS
GL_4X_BIT_ATI
GL_8X_BIT_ATI
GL_ABGR_EXT
GL_ACCUM
GL_ACCUM_ALPHA_BITS
GL_ACCUM_BLUE_BITS
GL_ACCUM_BUFFER_BIT
GL_ACCUM_CLEAR_VALUE
GL_ACCUM_GREEN_BITS
GL_ACCUM_RED_BITS
GL_ACTIVE_TEXTURE
GL_ACTIVE_TEXTURE_ARB
GL_ACTIVE_VERTEX_UNITS_ARB
GL_ADD
GL_ADD_ATI
GL_ADD_SIGNED
GL_ADD_SIGNED_ARB
GL_ADD_SIGNED_EXT
GL_ALIASED_LINE_WIDTH_RANGE
GL_ALIASED_POINT_SIZE_RANGE
GL_ALL_ATTRIB_BITS
GL_ALL_CLIENT_ATTRIB_BITS
GL_ALL_COMPLETED_NV
GL_ALLOW_DRAW_FRG_HINT_PGI
GL_ALLOW_DRAW_MEM_HINT_PGI
GL_ALLOW_DRAW_OBJ_HINT_PGI
GL_ALLOW_DRAW_WIN_HINT_PGI
GL_ALPHA
GL_ALPHA_BIAS
GL_ALPHA_BITS
GL_ALPHA_MAX_CLAMP_INGR
GL_ALPHA_MAX_SGIX
GL_ALPHA_MIN_CLAMP_INGR
GL_ALPHA_MIN_SGIX
GL_ALPHA_SCALE
GL_ALPHA_TEST
GL_ALPHA_TEST_FUNC
GL_ALPHA_TEST_REF
GL_ALPHA12
GL_ALPHA12_EXT
GL_ALPHA16
GL_ALPHA16_EXT
GL_ALPHA4
GL_ALPHA4_EXT
GL_ALPHA8
GL_ALPHA8_EXT
GL_ALWAYS
GL_ALWAYS_FAST_HINT_PGI
GL_ALWAYS_SOFT_HINT_PGI
GL_AMBIENT
GL_AMBIENT_AND_DIFFUSE
GL_AND
GL_AND_INVERTED
GL_AND_REVERSE
GL_APPLE_specular_vector
GL_APPLE_transform_hint
GL_ARB_imaging
GL_ARB_matrix_palette
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_point_parameters
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_cube_map
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_crossbar
GL_ARB_texture_env_dot3
GL_ARB_transpose_matrix
GL_ARB_vertex_blend
GL_ARRAY_ELEMENT_LOCK_COUNT_EXT
GL_ARRAY_ELEMENT_LOCK_FIRST_EXT
GL_ARRAY_OBJECT_BUFFER_ATI
GL_ARRAY_OBJECT_OFFSET_ATI
GL_ASYNC_DRAW_PIXELS_SGIX
GL_ASYNC_HISTOGRAM_SGIX
GL_ASYNC_MARKER_SGIX
GL_ASYNC_READ_PIXELS_SGIX
GL_ASYNC_TEX_IMAGE_SGIX
GL_ATI_envmap_bumpmap
GL_ATI_fragment_shader
GL_ATI_pn_triangles
GL_ATI_vertex_array_object
GL_ATI_vertex_streams
GL_ATTENUATION_EXT
GL_ATTRIB_ARRAY_POINTER_NV
GL_ATTRIB_ARRAY_SIZE_NV
GL_ATTRIB_ARRAY_STRIDE_NV
GL_ATTRIB_ARRAY_TYPE_NV
GL_ATTRIB_STACK_DEPTH
GL_AUTO_NORMAL
GL_AUX_BUFFERS
GL_AUX0
GL_AUX1
GL_AUX2
GL_AUX3
GL_AVERAGE_EXT
GL_AVERAGE_HP
GL_BACK
GL_BACK_LEFT
GL_BACK_NORMALS_HINT_PGI
GL_BACK_RIGHT
GL_BGR
GL_BGR_EXT
GL_BGRA
GL_BGRA_EXT
GL_BIAS_BIT_ATI
GL_BIAS_BY_NEGATIVE_ONE_HALF_NV
GL_BINORMAL_ARRAY_EXT
GL_BINORMAL_ARRAY_POINTER_EXT
GL_BINORMAL_ARRAY_STRIDE_EXT
GL_BINORMAL_ARRAY_TYPE_EXT
GL_BITMAP
GL_BITMAP_TOKEN
GL_BLEND
GL_BLEND_COLOR
GL_BLEND_COLOR_EXT
GL_BLEND_DST
GL_BLEND_DST_ALPHA_EXT
GL_BLEND_DST_RGB_EXT
GL_BLEND_EQUATION
GL_BLEND_EQUATION_EXT
GL_BLEND_SRC
GL_BLEND_SRC_ALPHA_EXT
GL_BLEND_SRC_RGB_EXT
GL_BLUE
GL_BLUE_BIAS
GL_BLUE_BIT_ATI
GL_BLUE_BITS
GL_BLUE_MAX_CLAMP_INGR
GL_BLUE_MIN_CLAMP_INGR
GL_BLUE_SCALE
GL_BUMP_ENVMAP_ATI
GL_BUMP_NUM_TEX_UNITS_ATI
GL_BUMP_ROT_MATRIX_ATI
GL_BUMP_ROT_MATRIX_SIZE_ATI
GL_BUMP_TARGET_ATI
GL_BUMP_TEX_UNITS_ATI
GL_BYTE
GL_C3F_V3F
GL_C4F_N3F_V3F
GL_C4UB_V2F
GL_C4UB_V3F
GL_CALLIGRAPHIC_FRAGMENT_SGIX
GL_CCW
GL_CLAMP
GL_CLAMP_TO_BORDER
GL_CLAMP_TO_BORDER_ARB
GL_CLAMP_TO_BORDER_SGIS
GL_CLAMP_TO_EDGE
GL_CLAMP_TO_EDGE_SGIS
GL_CLEAR
GL_CLIENT_ACTIVE_TEXTURE
GL_CLIENT_ACTIVE_TEXTURE_ARB
GL_CLIENT_ALL_ATTRIB_BITS
GL_CLIENT_ATTRIB_STACK_DEPTH
GL_CLIENT_PIXEL_STORE_BIT
GL_CLIENT_VERTEX_ARRAY_BIT
GL_CLIP_FAR_HINT_PGI
GL_CLIP_NEAR_HINT_PGI
GL_CLIP_PLANE0
GL_CLIP_PLANE1
GL_CLIP_PLANE2
GL_CLIP_PLANE3
GL_CLIP_PLANE4
GL_CLIP_PLANE5
GL_CLIP_VOLUME_CLIPPING_HINT_EXT
GL_CMYK_EXT
GL_CMYKA_EXT
GL_CND_ATI
GL_CND0_ATI
GL_COEFF
GL_COLOR
GL_COLOR_ALPHA_PAIRING_ATI
GL_COLOR_ARRAY
GL_COLOR_ARRAY_COUNT_EXT
GL_COLOR_ARRAY_EXT
GL_COLOR_ARRAY_LIST_IBM
GL_COLOR_ARRAY_LIST_STRIDE_IBM
GL_COLOR_ARRAY_PARALLEL_POINTERS_INTEL
GL_COLOR_ARRAY_POINTER
GL_COLOR_ARRAY_POINTER_EXT
GL_COLOR_ARRAY_SIZE
GL_COLOR_ARRAY_SIZE_EXT
GL_COLOR_ARRAY_STRIDE
GL_COLOR_ARRAY_STRIDE_EXT
GL_COLOR_ARRAY_TYPE
GL_COLOR_ARRAY_TYPE_EXT
GL_COLOR_BUFFER_BIT
GL_COLOR_CLEAR_VALUE
GL_COLOR_INDEX
GL_COLOR_INDEX1_EXT
GL_COLOR_INDEX12_EXT
GL_COLOR_INDEX16_EXT
GL_COLOR_INDEX2_EXT
GL_COLOR_INDEX4_EXT
GL_COLOR_INDEX8_EXT
GL_COLOR_INDEXES
GL_COLOR_LOGIC_OP
GL_COLOR_MATERIAL
GL_COLOR_MATERIAL_FACE
GL_COLOR_MATERIAL_PARAMETER
GL_COLOR_MATRIX
GL_COLOR_MATRIX_SGI
GL_COLOR_MATRIX_STACK_DEPTH
GL_COLOR_MATRIX_STACK_DEPTH_SGI
GL_COLOR_SUM_CLAMP_NV
GL_COLOR_SUM_EXT
GL_COLOR_TABLE
GL_COLOR_TABLE_ALPHA_SIZE
GL_COLOR_TABLE_ALPHA_SIZE_EXT
GL_COLOR_TABLE_ALPHA_SIZE_SGI
GL_COLOR_TABLE_BIAS
GL_COLOR_TABLE_BIAS_SGI
GL_COLOR_TABLE_BLUE_SIZE
GL_COLOR_TABLE_BLUE_SIZE_EXT
GL_COLOR_TABLE_BLUE_SIZE_SGI
GL_COLOR_TABLE_FORMAT
GL_COLOR_TABLE_FORMAT_EXT
GL_COLOR_TABLE_FORMAT_SGI
GL_COLOR_TABLE_GREEN_SIZE
GL_COLOR_TABLE_GREEN_SIZE_EXT
GL_COLOR_TABLE_GREEN_SIZE_SGI
GL_COLOR_TABLE_INTENSITY_SIZE
GL_COLOR_TABLE_INTENSITY_SIZE_EXT
GL_COLOR_TABLE_INTENSITY_SIZE_SGI
GL_COLOR_TABLE_LUMINANCE_SIZE
GL_COLOR_TABLE_LUMINANCE_SIZE_EXT
GL_COLOR_TABLE_LUMINANCE_SIZE_SGI
GL_COLOR_TABLE_RED_SIZE
GL_COLOR_TABLE_RED_SIZE_EXT
GL_COLOR_TABLE_RED_SIZE_SGI
GL_COLOR_TABLE_SCALE
GL_COLOR_TABLE_SCALE_SGI
GL_COLOR_TABLE_SGI
GL_COLOR_TABLE_WIDTH
GL_COLOR_TABLE_WIDTH_EXT
GL_COLOR_TABLE_WIDTH_SGI
GL_COLOR_WRITEMASK
GL_COLOR3_BIT_PGI
GL_COLOR4_BIT_PGI
GL_COMBINE
GL_COMBINE_ALPHA
GL_COMBINE_ALPHA_ARB
GL_COMBINE_ALPHA_EXT
GL_COMBINE_ARB
GL_COMBINE_EXT
GL_COMBINE_RGB
GL_COMBINE_RGB_ARB
GL_COMBINE_RGB_EXT
GL_COMBINE4_NV
GL_COMBINER_AB_DOT_PRODUCT_NV
GL_COMBINER_AB_OUTPUT_NV
GL_COMBINER_BIAS_NV
GL_COMBINER_CD_DOT_PRODUCT_NV
GL_COMBINER_CD_OUTPUT_NV
GL_COMBINER_COMPONENT_USAGE_NV
GL_COMBINER_INPUT_NV
GL_COMBINER_MAPPING_NV
GL_COMBINER_MUX_SUM_NV
GL_COMBINER_SCALE_NV
GL_COMBINER_SUM_OUTPUT_NV
GL_COMBINER0_NV
GL_COMBINER1_NV
GL_COMBINER2_NV
GL_COMBINER3_NV
GL_COMBINER4_NV
GL_COMBINER5_NV
GL_COMBINER6_NV
GL_COMBINER7_NV
GL_COMP_BIT_ATI
GL_COMPILE
GL_COMPILE_AND_EXECUTE
GL_COMPRESSED_ALPHA
GL_COMPRESSED_ALPHA_ARB
GL_COMPRESSED_INTENSITY
GL_COMPRESSED_INTENSITY_ARB
GL_COMPRESSED_LUMINANCE
GL_COMPRESSED_LUMINANCE_ALPHA
GL_COMPRESSED_LUMINANCE_ALPHA_ARB
GL_COMPRESSED_LUMINANCE_ARB
GL_COMPRESSED_RGB
GL_COMPRESSED_RGB_ARB
GL_COMPRESSED_RGB_FXT1_3DFX
GL_COMPRESSED_RGB_S3TC_DXT1_EXT
GL_COMPRESSED_RGBA
GL_COMPRESSED_RGBA_ARB
GL_COMPRESSED_RGBA_FXT1_3DFX
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
GL_COMPRESSED_TEXTURE_FORMATS
GL_COMPRESSED_TEXTURE_FORMATS_ARB
GL_CON_0_ATI
GL_CON_1_ATI
GL_CON_10_ATI
GL_CON_11_ATI
GL_CON_12_ATI
GL_CON_13_ATI
GL_CON_14_ATI
GL_CON_15_ATI
GL_CON_16_ATI
GL_CON_17_ATI
GL_CON_18_ATI
GL_CON_19_ATI
GL_CON_2_ATI
GL_CON_20_ATI
GL_CON_21_ATI
GL_CON_22_ATI
GL_CON_23_ATI
GL_CON_24_ATI
GL_CON_25_ATI
GL_CON_26_ATI
GL_CON_27_ATI
GL_CON_28_ATI
GL_CON_29_ATI
GL_CON_3_ATI
GL_CON_30_ATI
GL_CON_31_ATI
GL_CON_4_ATI
GL_CON_5_ATI
GL_CON_6_ATI
GL_CON_7_ATI
GL_CON_8_ATI
GL_CON_9_ATI
GL_CONSERVE_MEMORY_HINT_PGI
GL_CONST_EYE_NV
GL_CONSTANT
GL_CONSTANT_ALPHA
GL_CONSTANT_ALPHA_EXT
GL_CONSTANT_ARB
GL_CONSTANT_ATTENUATION
GL_CONSTANT_BORDER
GL_CONSTANT_BORDER_HP
GL_CONSTANT_COLOR
GL_CONSTANT_COLOR_EXT
GL_CONSTANT_COLOR0_NV
GL_CONSTANT_COLOR1_NV
GL_CONSTANT_EXT
GL_CONVOLUTION_1D
GL_CONVOLUTION_1D_EXT
GL_CONVOLUTION_2D
GL_CONVOLUTION_2D_EXT
GL_CONVOLUTION_BORDER_COLOR
GL_CONVOLUTION_BORDER_COLOR_HP
GL_CONVOLUTION_BORDER_MODE
GL_CONVOLUTION_BORDER_MODE_EXT
GL_CONVOLUTION_FILTER_BIAS
GL_CONVOLUTION_FILTER_BIAS_EXT
GL_CONVOLUTION_FILTER_SCALE
GL_CONVOLUTION_FILTER_SCALE_EXT
GL_CONVOLUTION_FORMAT
GL_CONVOLUTION_FORMAT_EXT
GL_CONVOLUTION_HEIGHT
GL_CONVOLUTION_HEIGHT_EXT
GL_CONVOLUTION_HINT_SGIX
GL_CONVOLUTION_WIDTH