docs: replace autotools intructions with meson equivalent

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>

docs/egl.html

@@ -33,13 +33,16 @@ directly dispatched to the drivers.</p>
 
 <ol>
 <li>
-<p>Run <code>configure</code> with the desired client APIs and enable
-the driver for your hardware.  For example</p>
+<p>Configure your build with the desired client APIs and enable
+the driver for your hardware.  For example:</p>
 
 <pre>
-  $ ./configure --enable-gles1 --enable-gles2 \
-                --with-dri-drivers=... \
-                --with-gallium-drivers=...
+$ meson configure \
+        -D egl=true \
+        -D gles1=true \
+        -D gles2=true \
+        -D dri-drivers=... \
+        -D gallium-drivers=...
 </pre>
 
 <p>The main library and OpenGL is enabled by default.  The first two options
@@ -61,7 +64,7 @@ or more EGL drivers.</p>
 time</p>
 
 <dl>
-<dt><code>--enable-egl</code></dt>
+<dt><code>-D egl=true</code></dt>
 <dd>
 
 <p>By default, EGL is enabled.  When disabled, the main library and the drivers
@@ -69,19 +72,11 @@ will not be built.</p>
 
 </dd>
 
-<dt><code>--with-egl-driver-dir</code></dt>
-<dd>
-
-<p>The directory EGL drivers should be installed to.  If not specified, EGL
-drivers will be installed to <code>${libdir}/egl</code>.</p>
-
-</dd>
-
-<dt><code>--with-platforms</code></dt>
+<dt><code>-D platforms=...</code></dt>
 <dd>
 
 <p>List the platforms (window systems) to support.  Its argument is a comma
-separated string such as <code>--with-platforms=x11,drm</code>.  It decides
+separated string such as <code>-D platforms=x11,drm</code>.  It decides
 the platforms a driver may support.  The first listed platform is also used by
 the main library to decide the native platform.</p>
 
@@ -90,15 +85,15 @@ the main library to decide the native platform.</p>
 and <code>haiku</code>.
 The <code>android</code> platform can either be built as a system
 component, part of AOSP, using <code>Android.mk</code> files, or
-cross-compiled using appropriate <code>configure</code> options.
+cross-compiled using appropriate options.
 The <code>haiku</code> platform can only be built with SCons.
 Unless for special needs, the build system should
 select the right platforms automatically.</p>
 
 </dd>
 
-<dt><code>--enable-gles1</code></dt>
-<dt><code>--enable-gles2</code></dt>
+<dt><code>-D gles1=true</code></dt>
+<dt><code>-D gles2=true</code></dt>
 <dd>
 
 <p>These options enable OpenGL ES support in OpenGL.  The result is one big
@@ -106,7 +101,7 @@ internal library that supports multiple APIs.</p>
 
 </dd>
 
-<dt><code>--enable-shared-glapi</code></dt>
+<dt><code>-D shared-glapi=true</code></dt>
 <dd>
 
 <p>By default, <code>libGL</code> has its own copy of <code>libglapi</code>.
@@ -134,9 +129,9 @@ runtime</p>
 <dd>
 
 <p>This variable specifies the native platform.  The valid values are the same
-as those for <code>--with-platforms</code>.  When the variable is not set,
+as those for <code>-D platforms=...</code>.  When the variable is not set,
 the main library uses the first platform listed in
-<code>--with-platforms</code> as the native platform.</p>
+<code>-D platforms=...</code> as the native platform.</p>
 
 <p>Extensions like <code>EGL_MESA_drm_display</code> define new functions to
 create displays for non-native platforms.  These extensions are usually used by