Cleanup of system and architecture support docs.

doc/install.html

@@ -14,25 +14,20 @@ table.compat {
 }
 table.compat td {
   border: 1px solid #bfcfff;
-  height: 2.5em;
+  height: 1.5em;
 }
 table.compat tr.compathead td {
   font-weight: bold;
   border-bottom: 2px solid #bfcfff;
 }
-tr.compathead td.compatos {
-  vertical-align: top;
+td.compatname, td.compatver {
+  width: 10%;
 }
-table.compat td.compatcpu {
-  width: 18%;
-  border-right: 2px solid #bfcfff;
+td.compatbits {
+  width: 5%;
 }
-td.compatos {
+td.compatx {
   width: 21%;
-  vertical-align: middle;
-}
-td.compatno {
-  background-color: #d0d0d0;
 }
 </style>
 </head>
@@ -91,62 +86,198 @@ For the impatient (on POSIX systems):
 <pre class="code">
 make &amp;&amp; sudo make install
 </pre>
+
+<h2 id="req">Requirements</h2>
+<h3 id="systems">Systems</h3>
+<p>
+LuaJIT currently builds out-of-the box on most systems:
+</p>
+<table class="compat">
+<tr class="compathead">
+<td class="compatname">OS</td>
+<td class="compatver">Min. Version</td>
+<td class="compatx">Requirements</td>
+<td class="compatx">LuaJIT Versions</td>
+</tr>
+<tr class="odd separate">
+<td class="compatname"><a href="#windows">Windows</a></td>
+<td class="compatver">7</td>
+<td class="compatx">x86 or x64, ARM64: TBA</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="even">
+<td class="compatname"><a href="#posix">Linux</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="odd">
+<td class="compatname"><a href="#posix">*BSD</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="even">
+<td class="compatname"><a href="#osx">macOS (OSX)</a></td>
+<td class="compatver">10.4</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">v2.1 &ndash;</td>
+</tr>
+<tr class="odd">
+<td class="compatname"><a href="#posix">POSIX</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">mmap, dlopen</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="even separate">
+<td class="compatname"><a href="#android">Android</a></td>
+<td class="compatver">4.0</td>
+<td class="compatx">Recent Android NDK</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="odd">
+<td class="compatname"><a href="#ios">iOS</a></td>
+<td class="compatver">3.0</td>
+<td class="compatx">Xcode iOS SDK</td>
+<td class="compatx">v2.1 &ndash;</td>
+</tr>
+<tr class="even separate">
+<td class="compatname"><a href="#consoles">PS3</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">PS3 SDK</td>
+<td class="compatx">v2.0 &ndash; v2.1 EOL</td>
+</tr>
+<tr class="odd">
+<td class="compatname"><a href="#consoles">PS4</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">PS4 SDK (ORBIS)</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="even">
+<td class="compatname"><a href="#consoles">PS5</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">PS5 SDK (PROSPERO)</td>
+<td class="compatx">v2.1 &ndash;</td>
+</tr>
+<tr class="odd">
+<td class="compatname"><a href="#consoles">PS Vita</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">PS Vita SDK (PSP2)</td>
+<td class="compatx">v2.0 &ndash; v2.1 EOL</td>
+</tr>
+<tr class="even">
+<td class="compatname"><a href="#consoles">Xbox 360</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">Xbox 360 SDK (XEDK)</td>
+<td class="compatx">v2.0 &ndash; v2.1 EOL</td>
+</tr>
+<tr class="odd">
+<td class="compatname"><a href="#consoles">Xbox One</a></td>
+<td class="compatver">&nbsp;</td>
+<td class="compatx">Xbox One SDK (DURANGO)</td>
+<td class="compatx">v2.1 &ndash;</td>
+</tr>
+</table>
 <p>
-LuaJIT currently builds out-of-the box on most systems.
-Here's the compatibility matrix for the supported combinations of
-operating systems, CPUs and compilers:
+The codebase has compatibility defines for some more systems, but
+without official support.
 </p>
+<h3 id="toolchains">Toolchains</h3>
+<p>
+Building LuaJIT requires a recent toolchain based on GCC, Clang/LLVM or
+MSVC++.
+</p>
+<p>
+The Makefile-based build system requires GNU Make and supports
+cross-builds. Batch files are provided for MSVC++ builds and console
+cross-builds.
+</p>
+<h3 id="architectures">CPU Architectures</h3>
 <table class="compat">
 <tr class="compathead">
-<td class="compatcpu">CPU / OS</td>
-<td class="compatos"><a href="#posix">Linux</a> or<br><a href="#android">Android</a></td>
-<td class="compatos"><a href="#posix">*BSD, Other</a></td>
-<td class="compatos"><a href="#posix">macOS 10.4+</a> or<br><a href="#ios">iOS 3.0+</a></td>
-<td class="compatos"><a href="#windows">Windows XP<br>or later</a></td>
+<td class="compatname">CPU</td>
+<td class="compatbits">Bits</td>
+<td class="compatx">Requirements</td>
+<td class="compatx">Variants</td>
+<td class="compatx">LuaJIT Versions</td>
 </tr>
 <tr class="odd separate">
-<td class="compatcpu">x86 (32 bit)</td>
-<td class="compatos">GCC 4.x+<br>GCC 3.4</td>
-<td class="compatos">GCC 4.x+<br>GCC 3.4</td>
-<td class="compatos">XCode 5.0+<br>Clang</td>
-<td class="compatos">MSVC<br>MinGW, Cygwin</td>
+<td class="compatname">x86</td>
+<td class="compatbits">32</td>
+<td class="compatx">v2.1+: SSE2</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="even">
+<td class="compatname">x64</td>
+<td class="compatbits">64</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">v2.0 &ndash;</td>
+</tr>
+<tr class="odd">
+<td class="compatname">ARM</td>
+<td class="compatbits">32</td>
+<td class="compatx">ARMv5+, ARM9E+</td>
+<td class="compatx">hard-fp + soft-fp</td>
+<td class="compatx">v2.0 &ndash;</td>
 </tr>
 <tr class="even">
-<td class="compatcpu">x64 (64 bit)</td>
-<td class="compatos">GCC 4.x+</td>
-<td class="compatos">ORBIS (<a href="#ps4">PS4</a>)</td>
-<td class="compatos">XCode 5.0+<br>Clang</td>
-<td class="compatos">MSVC</td>
+<td class="compatname">ARM64</td>
+<td class="compatbits">64</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">ARM64le + ARM64be</td>
+<td class="compatx">v2.1 &ndash;</td>
 </tr>
 <tr class="odd">
-<td class="compatcpu"><a href="#cross2">ARMv5+<br>ARM9E+</a></td>
-<td class="compatos">GCC 4.2+</td>
-<td class="compatos">GCC 4.2+<br>PSP2 (<a href="#psvita">PS VITA</a>)</td>
-<td class="compatos">XCode 5.0+<br>Clang</td>
-<td class="compatos compatno">&nbsp;</td>
+<td class="compatname">PPC32</td>
+<td class="compatbits">32</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">hard-fp + soft-fp</td>
+<td class="compatx">v2.0 &ndash; v2.1 EOL</td>
 </tr>
 <tr class="even">
-<td class="compatcpu"><a href="#cross2">PPC</a></td>
-<td class="compatos">GCC 4.3+</td>
-<td class="compatos">GCC 4.3+<br>GCC 4.1 (<a href="#ps3">PS3</a>)</td>
-<td class="compatos compatno">&nbsp;</td>
-<td class="compatos">XEDK (<a href="#xbox360">Xbox 360</a>)</td>
+<td class="compatname">PPC/e500</td>
+<td class="compatbits">32</td>
+<td class="compatx">e500v2</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">v2.0 EOL</td>
 </tr>
 <tr class="odd">
-<td class="compatcpu"><a href="#cross2">PPC/e500v2</a></td>
-<td class="compatos">GCC 4.3+</td>
-<td class="compatos">GCC 4.3+</td>
-<td class="compatos compatno">&nbsp;</td>
-<td class="compatos compatno">&nbsp;</td>
+<td class="compatname">MIPS32</td>
+<td class="compatbits">32</td>
+<td class="compatx">MIPS32r1 &ndash; r5</td>
+<td class="compatx">hard-fp + soft-fp</td>
+<td class="compatx">v2.0 &ndash;</td>
 </tr>
 <tr class="even">
-<td class="compatcpu"><a href="#cross2">MIPS</a></td>
-<td class="compatos">GCC 4.3+</td>
-<td class="compatos">GCC 4.3+</td>
-<td class="compatos compatno">&nbsp;</td>
-<td class="compatos compatno">&nbsp;</td>
+<td class="compatname">MIPS64</td>
+<td class="compatbits">64</td>
+<td class="compatx">MIPS64r1 &ndash; r5</td>
+<td class="compatx">hard-fp + soft-fp</td>
+<td class="compatx">v2.1 &ndash;</td>
+</tr>
+<tr class="odd">
+<td class="compatname">MIPS64</td>
+<td class="compatbits">64</td>
+<td class="compatx">MIPS64r6</td>
+<td class="compatx">hard-fp + soft-fp</td>
+<td class="compatx">v2.1 EOL</td>
+</tr>
+<tr class="even">
+<td class="compatname">RISC-V</td>
+<td class="compatbits">64</td>
+<td class="compatx">RVA22+</td>
+<td class="compatx">&nbsp;</td>
+<td class="compatx">TBA</td>
 </tr>
 </table>
+<p>
+There are no plans to add historic architectures or to continue support
+for end-of-life (EOL) architectures, for which no new CPUs are commonly
+available anymore. Likewise, there are no plans to support marginal
+and/or de-facto-dead architectures.
+</p>
 
 <h2>Configuring LuaJIT</h2>
 <p>
@@ -199,7 +330,7 @@ which is probably the default on your system, anyway. Simply run:
 make
 </pre>
 <p>
-This always builds a native x86, x64 or PPC binary, depending on the host OS
+This always builds a native binary, depending on the host OS
 you're running this command on. Check the section on
 <a href="#cross">cross-compilation</a> for more options.
 </p>
@@ -212,12 +343,9 @@ You can add an extra prefix to the search paths by appending the
 make PREFIX=/home/myself/lj2
 </pre>
 <p>
-Note for macOS: you <b>must</b> set the <tt>MACOSX_DEPLOYMENT_TARGET</tt>
-environment variable to a value supported by your toolchain:
+Please use the LuaJIT 2.1 branch to compile for
+<b id="osx">macOS (OSX)</b>.
 </p>
-<pre class="code">
-MACOSX_DEPLOYMENT_TARGET=XX.YY make
-</pre>
 <h3>Installing LuaJIT</h3>
 <p>
 The top-level Makefile installs LuaJIT by default under
@@ -470,16 +598,6 @@ the DLL). You may link LuaJIT statically on Windows only if you don't
 intend to load Lua/C modules at runtime.
 </li></ul>
 </li>
-<li>
-<i>Important: this relates to LuaJIT 2.0 only &mdash; use LuaJIT 2.1 to
-avoid these complications.</i><br>
-If you're building a 64 bit application on macOS which links directly or
-indirectly against LuaJIT, you need to link your main executable
-with these flags:
-<pre class="code">
--pagezero_size 10000 -image_base 100000000
-</pre>
-</li>
 </ul>
 <p>Additional hints for initializing LuaJIT using the C API functions:</p>
 <ul>