Prerequisites

• Xcode
• ccache(1) installed in /usr/local/bin

Configuring ccache

The maximum cache size is 5GB by default, but a WebKit Debug build can require 20GB or more:

• ccache --max-size=20G

Building with ccache

• make ARGS="WK_USE_CCACHE=YES"
• build-webkit WK_USE_CCACHE=YES
• Build in the Xcode UI by adding WK_USE_CCACHE = YES; to Tools/ccache/ccache.xcconfig (FIXME: this dirties the working directory).

Viewing cache statistics

• ccache -s