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#!/bin/bash
set -ev
# Download & build RISC-V Clang toolchain & QEMU emulator.
# RISC-V Clang is for cross compile with the RISC-V Vector ISA.
# RISC-V QEMU is used to run the test suite.
#
# Requirements: Linux host w/ working C++ compiler, git, cmake, ninja, wget, tar
# NOTE: this script must be run from the top-level directory of the LIBYUV_SRC_DIR.
RISCV_TRIPLE="riscv64-unknown-linux-gnu"
RISCV_QEMU="qemu-riscv64"
LIBYUV_SRC_DIR=$(pwd)
BUILD_DIR="$LIBYUV_SRC_DIR"/build-toolchain-qemu
INSTALL_QEMU="$BUILD_DIR"/riscv-qemu
INSTALL_CLANG="$BUILD_DIR"/riscv-clang
LLVM_VERSION="16.0.0"
LLVM_NAME=llvm-project-"$LLVM_VERSION".src
RISCV_GNU_TOOLCHAIN="$BUILD_DIR"/riscv-gnu-toolchain
RISCV_CLANG_TOOLCHAIN="$BUILD_DIR"/"$LLVM_NAME"
QEMU_NAME="qemu-7.0.0"
mkdir -p "$BUILD_DIR"
cd "$BUILD_DIR"
# Download and install RISC-V GNU Toolchain (needed to build Clang)
if [ ! -d "$RISCV_GNU_TOOLCHAIN" ]
then
git clone git@github.com:riscv/riscv-gnu-toolchain.git
pushd "$RISCV_GNU_TOOLCHAIN"
git submodule update --init --recursive
./configure --with-cmodel=medany --prefix="$INSTALL_CLANG"
ionice nice make linux -j `nproc` install
popd
fi
# Download Clang toolchain & build cross compiler
if [ ! -d "$RISCV_CLANG_TOOLCHAIN" ]
then
wget https://github.com/llvm/llvm-project/releases/download/llvmorg-"$LLVM_VERSION"/"$LLVM_NAME".tar.xz
tar xvJf "$LLVM_NAME".tar.xz
pushd "$RISCV_CLANG_TOOLCHAIN"
cmake -DCMAKE_INSTALL_PREFIX="$INSTALL_CLANG" \
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_TARGETS_TO_BUILD="RISCV" \
-DLLVM_ENABLE_PROJECTS="clang" \
-DLLVM_DEFAULT_TARGET_TRIPLE="$RISCV_TRIPLE" \
-DLLVM_INSTALL_TOOLCHAIN_ONLY=On \
-DDEFAULT_SYSROOT=../sysroot \
-G "Ninja" "$RISCV_CLANG_TOOLCHAIN"/llvm
ionice nice ninja -j `nproc`
ionice nice ninja -j `nproc` install
popd
pushd "$INSTALL_CLANG"/bin
ln -sf clang "$RISCV_TRIPLE"-clang
ln -sf clang++ "$RISCV_TRIPLE"-clang++
popd
fi
# Download QEMU and build the riscv64 Linux usermode emulator
if [ ! -d "$QEMU_NAME" ]
then
wget https://download.qemu.org/"$QEMU_NAME".tar.xz
tar xvJf "$QEMU_NAME".tar.xz
pushd "$QEMU_NAME"
./configure --target-list=riscv64-linux-user --prefix="$INSTALL_QEMU"
ionice nice make -j `nproc` install
popd
fi
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