@@ -159,19 +159,19 @@
 
     $ clang="clang -isysroot $(xcrun --sdk iphoneos --show-sdk-path)"
     $ export OBJC="$clang -arch armv7 -arch arm64"
     $ export OBJCPP="$clang -arch armv7 -E"
     $ export IPHONEOS_DEPLOYMENT_TARGET="9.0"
-    $ ./configure --prefix=/usr/local/ios --host=arm-apple-darwin
+    $ ./configure --prefix=/usr/local/ios --host=arm64-apple-darwin
 
   To build for the iOS simulator, use something like this:
 
     $ clang="clang -isysroot $(xcrun --sdk iphonesimulator --show-sdk-path)"
     $ export OBJC="$clang -arch i386 -arch x86_64"
     $ export OBJCPP="$clang -arch i386 -E"
     $ export IPHONEOS_DEPLOYMENT_TARGET="9.0"
-    $ ./configure --prefix=/usr/local/iossim --host=i386-apple-darwin
+    $ ./configure --prefix=/usr/local/iossim --host=x86_64-apple-darwin
 
 <h3 id="framework-in-xcode">Using the macOS or iOS framework in Xcode</h3>
 
   To use the macOS framework in Xcode, you need to add the `.framework`s to
   your project and add the following flags to `Other C Flags`:
@@ -315,11 +315,11 @@
   This creates a file `MyFirstApp.m`. The `-[applicationDidFinishLaunching]`
   method is called as soon as ObjFW finished all initialization. Use this as
   the entry point to your own code. For example, you could add the following
   line there to create a "Hello World":
 
-    [of_stdout writeLine: @"Hello World!"];
+    [OFStdOut writeLine: @"Hello World!"];
 
   You can compile your new app using `objfw-compile`:
 
     $ objfw-compile -o MyFirstApp MyFirstApp.m
 
@@ -363,10 +363,12 @@
    * A [Slack channel](https://objfw.nil.im/slack), bridged to the Matrix room
      above
    * A [Discord channel](https://objfw.nil.im/discord), bridged to the Matrix
      room above
    * A [Telegram room](https://t.me/objfw), bridged to the Matrix room above
+   * A [Gitter room](https://gitter.im/ObjFW/ObjFW), bridged to the Matrix room
+     above
 
   Please don't hesitate to join any or all of those!
 
 
 <h1 id="commercial-use">Commercial use</h1>