build failure on macOS: Bus error in BUILD_JIGSAW_TOOLS

[Alan Snyder]

I have just started getting a reliable build failure on macOS, even with a new clone of the client repo.

I’m not sure what might have changed, other than using a new SDK (from macOS 10.14) and Xcode 10.

The key lines are:

Compiling 4 files for BUILD_JIGSAW_TOOLS
make[3]: *** [/Volumes/A/JDK/client2/build/macosx-x86_64-normal-server-release/jdk/_packages_attribute.done] Bus error: 10
make[2]: *** [exploded-image-optimize] Error 2