Ports: Update glu to 9.0.3

This necessitates a switch to the Meson build system. A nice side effect
of this is that we now build & install the shared library for glu as
well.

Ports/glu/patches/0001-Build-Manually-find-LibGL.patch

@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jelle Raaijmakers <jelle@gmta.nl>
+Date: Sun, 11 Feb 2024 22:25:59 +0100
+Subject: [PATCH] Build: Manually find LibGL
+
+We don't have a working pkgconfig to find it, so get rid of it and
+manually find the library using the C compiler.
+---
+ meson.build | 11 ++---------
+ 1 file changed, 2 insertions(+), 9 deletions(-)
+
+diff --git a/meson.build b/meson.build
+index 7949e300ac60e0ff6955dedfd9a050cfa3010f4a..18dd4f497e7a43be3e36915bb5430e8891a3a9fb 100644
+--- a/meson.build
++++ b/meson.build
+@@ -18,7 +18,8 @@ gl_provider = get_option('gl_provider')
+ if gl_provider == 'glvnd'
+   gl_provider = 'opengl'
+ endif
+-dep_gl = dependency(gl_provider)
++cc = meson.get_compiler('c')
++dep_gl = cc.find_library('gl', has_headers : 'GL/gl.h')
+ 
+ inc_include = include_directories('include')
+ 
+@@ -28,11 +29,3 @@ install_headers(
+   'include/GL/glu.h',
+   subdir : 'GL',
+ )
+-
+-pkgconf = import('pkgconfig')
+-pkgconf.generate(
+-  libglu,
+-  name : 'glu',
+-  description : 'Mesa OpenGL Utility Library',
+-  requires: dep_gl
+-)

Ports/glu/patches/0002-Build-Do-not-hide-symbols-by-default.patch

@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jelle Raaijmakers <jelle@gmta.nl>
+Date: Sun, 11 Feb 2024 23:47:48 +0100
+Subject: [PATCH] Build: Do not hide symbols by default
+
+For some reason, the functions glu exports end up as LOCAL entries in
+the shared library. Remove this default visibility to set them to
+GLOBAL.
+---
+ src/meson.build | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/src/meson.build b/src/meson.build
+index 57d3b4a6163828445872f73ca4a92f2d202ac768..9ee969636950760354fb8990cc0bb7ea789098b5 100644
+--- a/src/meson.build
++++ b/src/meson.build
+@@ -103,7 +103,6 @@ libglu = library(
+     'libnurbs/nurbtess',
+     inc_include,
+   ],
+-  gnu_symbol_visibility : 'hidden',
+   dependencies : [dep_gl],
+   version : '1.3.1',
+   darwin_versions  : [ '5.0.0', '5.1.0' ],

Ports/glu/patches/ReadMe.md

@@ -0,0 +1,17 @@
+# Patches for glu on SerenityOS
+
+## `0001-Build-Manually-find-LibGL.patch`
+
+Build: Manually find LibGL
+
+We don't have a working pkgconfig to find it, so get rid of it and
+manually find the library using the C compiler.
+
+## `0002-Build-Do-not-hide-symbols-by-default.patch`
+
+Build: Do not hide symbols by default
+
+For some reason, the functions glu exports end up as LOCAL entries in
+the shared library. Remove this default visibility to set them to
+GLOBAL.
+