Adapt README for macOS support

1 files changed, 8 insertions, 6 deletions

diff --git a/README.md b/README.md
index 2834bbef..ebe99257 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,8 @@ It is based on [libFuzzer](https://llvm.org/docs/LibFuzzer.html) and brings many
 The JVM bytecode is executed inside the fuzzer process, which ensures fast execution speeds and allows seamless fuzzing of
 native libraries.
 
+Jazzer supports x64 Linux and (experimentally) macOS 10.15.
+
 ## News: Jazzer available in OSS-Fuzz
 
 [Code Intelligence](https://code-intelligence.com) and Google have teamed up to bring support for Java, Kotlin, and other JVM-based languages to [OSS-Fuzz](https://github.com/google/oss-fuzz), Google's project for large-scale fuzzing of open-souce software. Read [the blogpost](https://security.googleblog.com/2021/03/fuzzing-java-in-oss-fuzz.html) over at the Google Security Blog.
@@ -20,7 +22,7 @@ If you want to learn more about Jazzer, OSS-Fuzz, and the role fuzzing plays in
 ## Installation
 
 The preferred way to install Jazzer is to compile it from source using [Bazel](https://bazel.build), but binary distributions
-are also available. At the moment Jazzer is only available for x64 Linux.
+for x64 Linux are also available.
 
 ### Using Bazel
 
@@ -29,18 +31,18 @@ Jazzer has the following dependencies when being built from source:
 * JDK 8 or later (e.g. [OpenJDK](https://openjdk.java.net/))
 * [Clang](https://clang.llvm.org/) 9.0 or later (using a recent version is strongly recommended)
 
-Jazzer uses [Bazelisk](https://github.com/bazelbuild/bazelisk) to automatically download and install Bazel. Building
-Jazzer from source and running it thus only requires the following assuming the dependencies are installed:
+Jazzer uses [Bazelisk](https://github.com/bazelbuild/bazelisk) to automatically download and install Bazel on Linux.
+Building Jazzer from source and running it thus only requires the following assuming the dependencies are installed:
 
 ```bash
 git clone https://github.com/CodeIntelligenceTesting/jazzer
 cd jazzer
-# If Bazel is installed, use (note the double dash):
-bazel run //:jazzer -- <arguments>
-# If Bazel is not installed, use (note the double dash):
+# Note the double dash used to pass <arguments> to Jazzer rather than Bazel.
 ./bazelisk-linux-amd64 run //:jazzer -- <arguments>
 ```
 
+On macOS, Bazel needs to be installed manually as described in the [official instructions](https://docs.bazel.build/versions/4.0.0/install-os-x.html).
+
 ### Using the provided binaries
 
 Binary releases are available under [Releases](https://github.com/CodeIntelligenceTesting/jazzer/releases) and are built