LLVMBackend

Keybinding Markup

---
title: LLVMBackend
---

# Docs

*   <http://llvm.org/docs/GettingStarted.html> 
*   <http://jonathan2251.github.io/lbd/about.html>

# Source

git clone http://llvm.org/git/llvm.git
    # upstream is SVN so always rebase master
    git config branch.master.rebase true
    # clangc
    cd tools
    git clone http://llvm.org/git/clang.git
    git config branch.master.rebase true

# Build

## Prerequisites

sudo apt-get build-dep llvm clang
    sudo apt-get install ninja-build ccache

## Extra RAM

Had 4GB with 6GB zram0. Bumping zram0 to 8GB worked.

cat /sys/block/zram0/disksize   # current size, readonly while in use
    swapoff /dev/zram0
    rmmod zram  # what's the proper way to disable a zram dev?
    modprobe zram
    echo 8G > /sys/block/zram0/disksize
    mkswap /dev/zram0
    swapon /dev/zram0

## Compile

mkdir build && cd build
    cmake -G Ninja \
        -DLLVM\_TARGETS\_TO_BUILD="X86;MSP430" \
        -DCMAKE\_INSTALL\_PREFIX=/usr/local \
        -DLLVM\_BUILD\_LLVM_DYLIB=true \
        ../
    ninja

[1]: LLVMBackend?action=sourceblock&num=1
 [2]: LLVMBackend?action=sourceblock&num=2
 [3]: LLVMBackend?action=sourceblock&num=3
 [4]: LLVMBackend?action=sourceblock&num=4

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