cogl-path: Remove own glu.h version

cogl-path uses types from glu.h, but to avoid a build dependency on glu,
it kept a minified copy of glu.h in tree. Drop this file and just use
the actual glu.h. To avoid linking to libGLU.so, just use the
includepath, instead of actually adding glu as a real dependency.

This means we can remove an includepath meant to make it possible to
include <GL/glu.h>.

.gitlab-ci/Dockerfile

@@ -5,7 +5,7 @@ RUN dnf -y update && dnf -y upgrade && \
     dnf builddep -y mutter && \
 
     # Until Fedora catches up with meson build-deps
-    dnf install -y meson xorg-x11-server-Xorg gnome-settings-daemon-devel egl-wayland-devel xorg-x11-server-Xwayland && \
+    dnf install -y meson xorg-x11-server-Xorg gnome-settings-daemon-devel egl-wayland-devel xorg-x11-server-Xwayland mesa-libGLU-devel && \
 
     # For running unit tests
     dnf install -y xorg-x11-server-Xvfb mesa-dri-drivers dbus dbus-x11 && \

cogl/cogl-path/meson.build

@@ -33,10 +33,9 @@ cogl_path_sources = [
   'tesselator/tesselator.h',
   'tesselator/tessmono.c',
   'tesselator/tessmono.h',
-  'tesselator/GL/glu.h',
 ]
 
-cogl_path_includepath = include_directories('.', 'tesselator')
+cogl_path_includepath = include_directories('.')
 
 libmutter_cogl_path_enum_types = gnome.mkenums('cogl-path-enum-types',
   sources: 'cogl-path-types.h',
@@ -49,10 +48,15 @@ libmutter_cogl_path_enum_types_h = libmutter_cogl_path_enum_types[1]
 
 cogl_path_sources += libmutter_cogl_path_enum_types
 
+cogl_path_c_args = [
+  cogl_c_args,
+  '-I@0@'.format(glu_dep.get_pkgconfig_variable('includedir')),
+]
+
 libmutter_cogl_path = shared_library('mutter-cogl-path-' + libmutter_api_version,
   sources: [cogl_path_sources, cogl_path_public_headers],
   soversion: '0.0.0',
-  c_args: cogl_c_args,
+  c_args: cogl_path_c_args,
   include_directories: [cogl_includepath, cogl_path_includepath],
   link_depends: 'libmutter-cogl-path.map',
   dependencies: [libmutter_cogl_dep, cogl_deps],

cogl/cogl-path/tesselator/GL/glu.h

@@ -1,47 +0,0 @@
-/*
- * Cogl
- *
- * A Low Level GPU Graphics and Utilities API
- *
- * Copyright (C) 2010 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 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.
- *
- */
-
-/* This is just a wrapper to use our simplified version of glu.h so
-   that the tesselator code can still #include <GL/glu.h> */
-
-#include "../tesselator.h"
-
-/* These aren't defined on GLES and we don't really want the
-   tesselator code to use them but we're also trying to avoid
-   modifying the C files so we just force them to be empty here */
-
-#undef GLAPI
-#define GLAPI
-
-#undef GLAPIENTRY
-#define GLAPIENTRY
-
-/* GLES doesn't define a GLdouble type so lets just force it to a
-   regular double */
-#define GLdouble double

meson.build

@@ -120,6 +120,7 @@ xinerama_dep = dependency('xinerama')
 ice_dep = dependency('ice')
 atk_dep = dependency('atk', version: atk_req)
 libcanberra_dep = dependency('libcanberra', version: libcanberra_req)
+glu_dep = dependency('glu')
 
 # For now always require X11 support
 have_x11 = true