1 files changed, 137 insertions, 53 deletions
diff --git a/doc/install.html b/doc/install.html
index f9c326d8..0fdde485 100644
--- a/doc/install.html
+++ b/doc/install.html
@@ -1,8 +1,8 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<!DOCTYPE html>
 <html>
 <head>
 <title>Installation</title>
-<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+<meta charset="utf-8">
 <meta name="Copyright" content="Copyright (C) 2005-2026">
 <meta name="Language" content="en">
 <link rel="stylesheet" type="text/css" href="bluequad.css" media="screen">
@@ -60,9 +60,13 @@ td.compatx {
 <a href="ext_ffi_semantics.html">FFI Semantics</a>
 </li></ul>
 </li><li>
+<a href="ext_buffer.html">String Buffers</a>
+</li><li>
 <a href="ext_jit.html">jit.* Library</a>
 </li><li>
 <a href="ext_c_api.html">Lua/C API</a>
+</li><li>
+<a href="ext_profiler.html">Profiler</a>
 </li></ul>
 </li><li>
 <a href="https://luajit.org/status.html">Status <span class="ext">&raquo;</span></a>
@@ -113,7 +117,7 @@ hold all user-configurable settings:
 <li><tt>Makefile</tt> has settings for <b>installing</b> LuaJIT (POSIX
 only).</li>
 <li><tt>src/Makefile</tt> has settings for <b>compiling</b> LuaJIT
-under POSIX, MinGW or Cygwin.</li>
+under POSIX or MinGW.</li>
 <li><tt>src/msvcbuild.bat</tt> has settings for compiling LuaJIT with
 MSVC (Visual Studio).</li>
 </ul>
@@ -121,6 +125,13 @@ MSVC (Visual Studio).</li>
 Please read the instructions given in these files, before changing
 any settings.
 </p>
+<p>
+All LuaJIT 64 bit ports use 64 bit GC objects by default (<tt>LJ_GC64</tt>).
+For x64, you can select the old 32-on-64 bit mode by adding
+<tt>XCFLAGS=-DLUAJIT_DISABLE_GC64</tt> to the make command.
+Please check the note about the
+<a href="extensions.html#string_dump">bytecode format</a> differences, too.
+</p>
 <h2 id="posix">POSIX Systems (Linux, macOS, *BSD etc.)</h2>
 <h3>Prerequisites</h3>
@@ -154,9 +165,12 @@ You can add an extra prefix to the search paths by appending the
 make PREFIX=/home/myself/lj2
 </pre>
 <p>
-Please use the LuaJIT 2.1 branch to compile for
+Note for macOS: you <b>must</b> set the <tt>MACOSX_DEPLOYMENT_TARGET</tt>
-<b id="osx">macOS (OSX)</b>.
+environment variable to a value supported by your toolchain:
 </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
@@ -181,15 +195,13 @@ Obviously the prefixes given during build and installation need to be the same.
 <h2 id="windows">Windows Systems</h2>
 <h3>Prerequisites</h3>
 <p>
-Either install one of the open source SDKs
+Either install the open source SDK <a href="http://mingw.org/"><span class="ext">&raquo;</span>&nbsp;MinGW</a>,
-(<a href="http://mingw.org/"><span class="ext">&raquo;</span>&nbsp;MinGW</a> or
+which comes with a modified GCC plus the required development headers.
-<a href="https://www.cygwin.com/"><span class="ext">&raquo;</span>&nbsp;Cygwin</a>), which come with a modified
-GCC plus the required development headers.
 Or install Microsoft's Visual Studio (MSVC).
 </p>
 <h3>Building with MSVC</h3>
 <p>
-Open a "Visual Studio Command Prompt" (either x86 or x64), <tt>cd</tt> to the
+Open a "Visual Studio Command Prompt" (x86, x64 or ARM64), <tt>cd</tt> to the
 directory with the source code and run these commands:
 </p>
 <pre class="code">
@@ -200,9 +212,12 @@ msvcbuild
 Check the <tt>msvcbuild.bat</tt> file for more options.
 Then follow the installation instructions below.
 </p>
-<h3>Building with MinGW or Cygwin</h3>
 <p>
-Open a command prompt window and make sure the MinGW or Cygwin programs
+For an x64 to ARM64 cross-build run this first: <tt>vcvarsall.bat x64_arm64</tt>
+</p>
+<h3>Building with MinGW</h3>
+<p>
+Open a command prompt window and make sure the MinGW programs
 are in your path. Then <tt>cd</tt> to the directory of the git repository.
 Then run this command for MinGW:
 </p>
@@ -210,12 +225,6 @@ Then run this command for MinGW:
 mingw32-make
 </pre>
 <p>
-Or this command for Cygwin:
-</p>
-<pre class="code">
-make
-</pre>
-<p>
 Then follow the installation instructions below.
 </p>
 <h3>Installing LuaJIT</h3>
@@ -232,31 +241,53 @@ absolute path names &mdash; all modules are loaded relative to the
 directory where <tt>luajit.exe</tt> is installed
 (see <tt>src/luaconf.h</tt>).
 </p>
+<p>
+The final directory layout should look like this:
+</p>
+<pre class="code">
+├── luajit.exe
+├── lua51.dll
+├── <- put your own classic Lua/C API modules (*.dll) here
+└── lua
+    ├── <- put your own Lua modules (*.lua) here
+    └── jit
+        ├── bc.lua
+        └── (etc …)
+</pre>
 <h2 id="cross">Cross-compiling LuaJIT</h2>
 <p>
+First, let's clear up some terminology:
+</p>
+<ul>
+<li>Host: This is your development system, usually based on a x64 or x86 CPU.</li>
+<li>Target: This is the target system you want LuaJIT to run on, e.g. Android/ARM.</li>
+<li>Toolchain: This comprises a C compiler, linker, assembler and a matching C library.</li>
+<li>Host (or system) toolchain: This is the toolchain used to build native binaries for your host system.</li>
+<li>Cross-compile toolchain: This is the toolchain used to build binaries for the target system. They can only be run on the target system.</li>
+</ul>
+<p>
 The GNU Makefile-based build system allows cross-compiling on any host
-for any supported target, as long as both architectures have the same
+for any supported target:
-pointer size. If you want to cross-compile to any 32 bit target on an
-x64 OS, you need to install the multilib development package (e.g.
-<tt>libc6-dev-i386</tt> on Debian/Ubuntu) and build a 32 bit host part
-(<tt>HOST_CC="gcc -m32"</tt>). On some distro versions, multilib conflicts
-with cross-compilers. The workaround is to install the x86 cross-compiler
-package <tt>gcc-i686-linux-gnu</tt> and use it to build the host part
-(<tt>HOST_CC=i686-linux-gnu-gcc</tt>).
 </p>
+<ul>
+<li>Yes, you need a toolchain for both your host <em>and</em> your target!</li>
+<li>Both host and target architectures must have the same pointer size.</li>
+<li>E.g. if you want to cross-compile to a 32 bit target on a 64 bit host, you need to install the multilib development package (e.g. <tt>libc6-dev-i386</tt> on Debian/Ubuntu) and build a 32 bit host part (<tt>HOST_CC="gcc -m32"</tt>).</li>
+<li>On some distro versions, multilib conflicts with cross-compilers. The workaround is to install the x86 cross-compiler package <tt>gcc-i686-linux-gnu</tt> and use it to build the host part (<tt>HOST_CC=i686-linux-gnu-gcc</tt>).</li>
+<li>64 bit targets always require compilation on a 64 bit host.</li>
+</ul>
 <p>
 You need to specify <tt>TARGET_SYS</tt> whenever the host OS and the
-target OS differ, or you'll get assembler or linker errors. E.g. if
+target OS differ, or you'll get assembler or linker errors:
-you're compiling on a Windows or macOS host for embedded Linux or Android,
-you need to add <tt>TARGET_SYS=Linux</tt> to the examples below. For a
-minimal target OS, you may need to disable the built-in allocator in
-<tt>src/Makefile</tt> and use <tt>TARGET_SYS=Other</tt>. Don't forget to
-specify the same <tt>TARGET_SYS</tt> for the install step, too.
 </p>
+<ul>
+<li>E.g. if you're compiling on a Windows or macOS host for embedded Linux or Android, you need to add <tt>TARGET_SYS=Linux</tt> to the examples below.</li>
+<li>For a minimal target OS, you may need to disable the built-in allocator in <tt>src/Makefile</tt> and use <tt>TARGET_SYS=Other</tt>.</li>
+<li>Don't forget to specify the same <tt>TARGET_SYS</tt> for the install step, too.</li>
+</ul>
 <p>
-The examples below only show some popular targets &mdash; please check
+Here are some examples where host and target have the same CPU:
-the comments in <tt>src/Makefile</tt> for more details.
 </p>
 <pre class="code">
 # Cross-compile to a 32 bit binary on a multilib x64 OS
@@ -274,34 +305,44 @@ use the canonical toolchain triplets for Linux.
 </p>
 <p>
 Since there's often no easy way to detect CPU features at runtime, it's
-important to compile with the proper CPU or architecture settings. You
+important to compile with the proper CPU or architecture settings:
-can specify these when building the toolchain yourself. Or add
+</o>
-<tt>-mcpu=...</tt> or <tt>-march=...</tt> to <tt>TARGET_CFLAGS</tt>. For
+<ul>
-ARM it's important to have the correct <tt>-mfloat-abi=...</tt> setting,
+<li>The best way to get consistent results is to specify the correct settings when building the toolchain yourself.</li>
-too. Otherwise, LuaJIT may not run at the full performance of your target
+<li>For a pre-built, generic toolchain add <tt>-mcpu=...</tt> or <tt>-march=...</tt> and other necessary flags to <tt>TARGET_CFLAGS</tt>.</li>
-CPU.
+<li>For ARM it's important to have the correct <tt>-mfloat-abi=...</tt> setting, too. Otherwise LuaJIT may not run at the full performance of your target CPU.</li>
+<li>For MIPS it's important to select a supported ABI (o32 on MIPS32, n64 on MIPS64) and consistently compile your project either with hard-float or soft-float compiler settings.</li>
+</ul>
+<p>
+Here are some examples for targets with a different CPU than the host:
 </p>
 <pre class="code">
 # ARM soft-float
 make HOST_CC="gcc -m32" CROSS=arm-linux-gnueabi- \
     TARGET_CFLAGS="-mfloat-abi=soft"
-# ARM soft-float ABI with VFP (example for Cortex-A8)
+# ARM soft-float ABI with VFP (example for Cortex-A9)
 make HOST_CC="gcc -m32" CROSS=arm-linux-gnueabi- \
-     TARGET_CFLAGS="-mcpu=cortex-a8 -mfloat-abi=softfp"
+     TARGET_CFLAGS="-mcpu=cortex-a9 -mfloat-abi=softfp"
-# ARM hard-float ABI with VFP (armhf, requires recent toolchain)
+# ARM hard-float ABI with VFP (armhf, most modern toolchains)
 make HOST_CC="gcc -m32" CROSS=arm-linux-gnueabihf-
+# ARM64
+make CROSS=aarch64-linux-gnu-
 # PPC
 make HOST_CC="gcc -m32" CROSS=powerpc-linux-gnu-
-# PPC/e500v2 (fast interpreter only)
-make HOST_CC="gcc -m32" CROSS=powerpc-e500v2-linux-gnuspe-
-# MIPS big-endian
+# MIPS32 big-endian
-make HOST_CC="gcc -m32" CROSS=mips-linux-
+make HOST_CC="gcc -m32" CROSS=mips-linux-gnu-
-# MIPS little-endian
+# MIPS32 little-endian
-make HOST_CC="gcc -m32" CROSS=mipsel-linux-
+make HOST_CC="gcc -m32" CROSS=mipsel-linux-gnu-
+# MIPS64 big-endian
+make CROSS=mips-linux- TARGET_CFLAGS="-mips64r2 -mabi=64"
+# MIPS64 little-endian
+make CROSS=mipsel-linux- TARGET_CFLAGS="-mips64r2 -mabi=64"
 </pre>
 <p>
 You can cross-compile for <b id="android">Android</b> using the <a href="https://developer.android.com/ndk/"><span class="ext">&raquo;</span>&nbsp;Android NDK</a>.
@@ -309,8 +350,17 @@ Please adapt the environment variables to match the install locations and the
 desired target platform. E.g. Android&nbsp;4.1 corresponds to ABI level&nbsp;16.
 </p>
 <pre class="code">
-# Android/ARM, armeabi-v7a (ARMv7 VFP), Android 4.1+ (JB)
+# Android/ARM64, aarch64, Android 5.0+ (L)
+NDKDIR=/opt/android/ndk
+NDKBIN=$NDKDIR/toolchains/llvm/prebuilt/linux-x86_64/bin
+NDKCROSS=$NDKBIN/aarch64-linux-android-
+NDKCC=$NDKBIN/aarch64-linux-android21-clang
+make CROSS=$NDKCROSS \
+     STATIC_CC=$NDKCC DYNAMIC_CC="$NDKCC -fPIC" \
+     TARGET_LD=$NDKCC TARGET_AR="$NDKBIN/llvm-ar rcus" \
+     TARGET_STRIP=$NDKBIN/llvm-strip
+# Android/ARM, armeabi-v7a (ARMv7 VFP), Android 4.1+ (JB)
 NDKDIR=/opt/android/ndk
 NDKBIN=$NDKDIR/toolchains/llvm/prebuilt/linux-x86_64/bin
 NDKCROSS=$NDKBIN/arm-linux-androideabi-
@@ -321,9 +371,23 @@ make HOST_CC="gcc -m32" CROSS=$NDKCROSS \
     TARGET_STRIP=$NDKBIN/llvm-strip
 </pre>
 <p>
-Please use the LuaJIT 2.1 branch to compile for
+You can cross-compile for <b id="ios">iOS 3.0+</b> (iPhone/iPad) using the <a href="https://developer.apple.com/ios/"><span class="ext">&raquo;</span>&nbsp;iOS SDK</a>:
-<b id="ios">iOS</b> (iPhone/iPad).
+</p>
+<p style="font-size: 8pt;">
+Note: <b>the JIT compiler is disabled for iOS</b>, because regular iOS Apps
+are not allowed to generate code at runtime. You'll only get the performance
+of the LuaJIT interpreter on iOS. This is still faster than plain Lua, but
+much slower than the JIT compiler. Please complain to Apple, not me.
+Or use Android. :-p
 </p>
+<pre class="code">
+# iOS/ARM64
+ISDKP=$(xcrun --sdk iphoneos --show-sdk-path)
+ICC=$(xcrun --sdk iphoneos --find clang)
+ISDKF="-arch arm64 -isysroot $ISDKP"
+make DEFAULT_CC=clang CROSS="$(dirname $ICC)/" \
+     TARGET_FLAGS="$ISDKF" TARGET_SYS=iOS
+</pre>
 <h3 id="consoles">Cross-compiling for consoles</h3>
 <p>
@@ -367,15 +431,35 @@ and run the build command given in the table:
 <td class="compatx"><tt>ps4build</tt></td>
 </tr>
 <tr class="even">
+<td class="compatname"><b id="ps5">PS5</b></td>
+<td class="compatbits">64</td>
+<td class="compatx"><tt>ps5build</tt></td>
+</tr>
+<tr class="odd">
 <td class="compatname"><b id="psvita">PS Vita</b></td>
 <td class="compatbits">32</td>
 <td class="compatx"><tt>psvitabuild</tt></td>
 </tr>
-<tr class="odd">
+<tr class="even">
 <td class="compatname"><b id="xbox360">Xbox 360</b></td>
 <td class="compatbits">32</td>
 <td class="compatx"><tt>xedkbuild</tt></td>
 </tr>
+<tr class="odd">
+<td class="compatname"><b id="xboxone">Xbox One</b></td>
+<td class="compatbits">64</td>
+<td class="compatx"><tt>xb1build</tt></td>
+</tr>
+<tr class="even">
+<td class="compatname"><b id="nx32">Nintendo Switch NX32</b></td>
+<td class="compatbits">32</td>
+<td class="compatx"><tt>nxbuild</tt></td>
+</tr>
+<tr class="odd">
+<td class="compatname"><b id="nx64">Nintendo Switch NX64</b></td>
+<td class="compatbits">64</td>
+<td class="compatx"><tt>nxbuild</tt></td>
+</tr>
 </table>
 <p>
 Please check out the comments in the corresponding <tt>*.bat</tt>