Update build instructions.

Author: Mike Pall

doc/install.html

@@ -112,23 +112,23 @@ <h1>Installation</h1>
 </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">GCC 4.x<br>GCC 3.4</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, MSVC/EE<br>WinSDK<br>MinGW, Cygwin</td>
 </tr>
 <tr class="even">
 <td class="compatcpu">x64 (64 bit)</td>
-<td class="compatos">GCC 4.x</td>
+<td class="compatos">GCC 4.x+</td>
 <td class="compatos">ORBIS (<a href="#ps4">PS4</a>)</td>
-<td class="compatos">GCC 4.x</td>
+<td class="compatos">XCode 5.0+<br>Clang</td>
 <td class="compatos">MSVC + SDK v7.0<br>WinSDK v7.0</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">GCC 4.2+</td>
+<td class="compatos">XCode 5.0+<br>Clang</td>
 <td class="compatos compatno">&nbsp;</td>
 </tr>
 <tr class="even">
@@ -439,8 +439,7 @@ <h2 id="cross">Cross-compiling LuaJIT</h2>
 make HOST_CC="gcc -m32" CROSS=$NDKP TARGET_FLAGS="$NDKF"
 </pre>
 <p>
-You can cross-compile for <b id="ios">iOS 3.0+</b> (iPhone/iPad) using the <a href="http://developer.apple.com/devcenter/ios/index.action"><span class="ext">&raquo;</span>&nbsp;iOS SDK</a>.
-The environment variables need to match the iOS SDK version:
+You can cross-compile for <b id="ios">iOS 3.0+</b> (iPhone/iPad) using the <a href="http://developer.apple.com/devcenter/ios/index.action"><span class="ext">&raquo;</span>&nbsp;iOS SDK</a>:
 </p>
 <p style="font-size: 8pt;">
 Note: <b>the JIT compiler is disabled for iOS</b>, because regular iOS Apps
@@ -450,13 +449,11 @@ <h2 id="cross">Cross-compiling LuaJIT</h2>
 Or use Android. :-p
 </p>
 <pre class="code">
-IXCODE=`xcode-select -print-path`
-ISDK=$IXCODE/Platforms/iPhoneOS.platform/Developer
-ISDKVER=iPhoneOS6.0.sdk
-ISDKP=$ISDK/usr/bin/
-ISDKF="-arch armv7 -isysroot $ISDK/SDKs/$ISDKVER"
-make HOST_CC="gcc -m32 -arch i386" CROSS=$ISDKP TARGET_FLAGS="$ISDKF" \
-     TARGET_SYS=iOS
+ISDKP=$(xcrun --sdk iphoneos --show-sdk-path)
+ICC=$(xcrun --sdk iphoneos --find clang)
+ISDKF="-arch armv7 -isysroot $ISDKP"
+make HOST_CC="clang -m32 -arch i386" CROSS="$(dirname $ICC)/" \
+     TARGET_FLAGS="$ISDKF" TARGET_SYS=iOS
 </pre>
 
 <h3 id="consoles">Cross-compiling for consoles</h3>