Created
January 18, 2021 16:30
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build minimal llvm+clang+lld - needs a big llvm-project clone at __SOURCE
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#!/usr/bin/env bash | |
set -e | |
################################################################################ | |
# | |
# note: if building with gcc you might need ~1.5-2.0 GiB per concurrent job | |
# | |
# apt install git vim ruby cmake ninja-build | |
# | |
################################################################################ | |
__JOBS=`nproc` | |
__PROJECT=~/work/llvm | |
__SOURCE=$__PROJECT/llvm-project | |
__LLVM_TAG="llvmorg-11.0.0" | |
__LLVM_PRODUCT="llvm-11.0.0" | |
__LLVM_INSTALL_ROOT=/opt/$__LLVM_PRODUCT | |
mkdir -p `dirname $__SOURCE` | |
if [ ! -d $__SOURCE ]; then | |
echo "GIT: cloning llvm-project..." | |
git clone https://github.com/llvm/llvm-project.git $__SOURCE | |
fi | |
cd $__SOURCE | |
echo "GIT: switch to ${__LLVM_TAG}" | |
git switch --detach $__LLVM_TAG | |
git describe --always | |
################################################################################ | |
# | |
# build: llvm+clang+lld | |
# | |
################################################################################ | |
__BUILD=$__PROJECT/_build/$__LLVM_PRODUCT | |
__PREFIX=$__LLVM_INSTALL_ROOT | |
__PROJECTS="clang;lld" | |
if [ ! -f $__PREFIX/bin/llvm-config ]; then | |
if [ -d $__BUILD ]; then | |
echo "already exists: $__BUILD" | |
exit 1 | |
fi | |
mkdir -p $__BUILD | |
cd $__BUILD | |
cmake -G "Ninja" \ | |
-DCMAKE_BUILD_TYPE="Release" \ | |
-DCMAKE_INSTALL_PREFIX="$__PREFIX" \ | |
-DCMAKE_PREFIX_PATH="$__PREFIX" \ | |
-DLLVM_ENABLE_PROJECTS="$__PROJECTS" \ | |
-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR" \ | |
-DLLVM_ENABLE_LIBXML2="OFF" \ | |
-DLLVM_ENABLE_TERMINFO="OFF" \ | |
"$__SOURCE/llvm" | |
ninja -j$__JOBS install | |
fi |
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