在RISC-V的学习以及TVM-VTA的学习中，使用到了Verilator，因此记录其编译安装的方式。

Verilato作为开源的Verilog仿真器，使用方便。

1. Prepare

OS: Ubuntu 18.04.3 Dependence Instation:[1]

sudo apt-get install git make autoconf g++ flex bison   # First time prerequisites
sudo apt-get install libfl2     # Ubuntu only (ignore if gives error)
sudo apt-get install libfl-dev  # Ubuntu only (ignore if gives error)

Clone source with git:

git clone http://git.veripool.org/git/verilator  $VerilatorSourcePATH  # Only first time

2. Compile & Install

编译前，对编译的版本选择：

cd verilator
git pull                   # Make sure we're up-to-date
git tag                    # See what versions exist
# git checkout master      # Use development branch (e.g. recent bug fix)
# git checkout stable      # Use most recent release
# git checkout v{version}  # Switch to specified release version

编译安装：

autoconf        # Create ./configure script
./configure --prefix=$VERILATOR_ROOT
# --prefix=/path/to/install 指定安装的目录

make -j`nproc` # make
# -j`nproc` 指定最大核心编译， 也可指定 -jn

sudo make install # install to path

安装后配置-环境变量设定：

# Verilator
export VERILATOR_ROOT=/path/to/install
export MYPATH=$MYPATH:$VERILATOR_ROOT/bin:$VERILATOR_ROOT/share/verilator/bin
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$VERILATOR_ROOT/share/pkgconfig
export MANPATH=$MANPATH:$VERILATOR_ROOT/share/man
export CPLUS_INCLUDE_PATH=$VERILATOR_ROOT/share/verilator/include

3. Problems

4. Reference

[1]: Installing Verilator, [OL], 2019-08-27, https://www.veripool.org/projects/verilator/wiki/Installing

5. Update Logs

2019.08.27: Write the Base Document.