macOS Prerequisites

1. The following packages are required by the build scripts.

autoconf automake libtool pkg-config curl git

2. These optional packages should be installed only if you want to build corresponding external libraries.

cmake gcc gperf texinfo yasm nasm bison autogen wget gettext meson ninja ragel

• autogen required for libsndfile
• bison > 2.4, wget, gettext required for gnutls
• cmake > 3.9 required by libwebp and x265
• gcc required by freetype and fribidi
• gperf required by fontconfig
• meson > 0.56, ninja for dav1d
• nasm required for x264 and dav1d on x86/x86-64 platforms
• ragel required by harfbuzz
• texinfo required by gmp on some platforms
• yasm required for libvpx and x265 on some platforms

3. macOS builds require these additional packages.

• Xcode 8.0 or later
• macOS SDK 10.12 or later
• Command Line Tools