amosbird / build-llvm

Script to build latest llvm, clang, lldb, and include-what-you-use

Track and build llvm master and friends

Currently builds head of:

• llvm
• clang
• clang-tools-extra
• include-what-you-use
• compiler-rt
• lldb (optionally, currently disabled)

Depends

• c++11 compiler
• ninja
• cmake
• git

Usage

To build and install everything first ensure ninja and cmake are on your path.

Then do:

./build.sh

Then prepare to wait for ~30 minutes.

Installs into /opt/llvm/ by default. Do:

export PATH=/opt/llvm/bin:${PATH}

To use your custom clang++

Or request installation in a custom directory:

PREFIX=/usr/local ./build.sh

You can re-run ./build.sh at any time. It will pull the latest updates and re-build. Fairly frequently you will hit compiler errors because the llvm, clang, or other developers have let things get out of sync. To avoid this I plan to modify the script to use tags, but not gotten around to this yet.