chore: add verilator compile rule

Author: maksyuki

rtl/scripts/install.sh

@@ -40,18 +40,36 @@ install_package() {
 }
 
 install_verilator() {
-    ubt20_64_package_list=("git" "perl" "python3" "make" "g++" "libfl2" "libfl-dev" "zlibc" "zlib1g" "zlib1g-dev" "ccache" "libgoogle-perftools-dev" "numactl" "perl-doc")
+    ubt20_64_package_list=("git" "perl" "python3" "make" "autoconf" "g++" "flex" "bison" "ccache"
+    "libgoogle-perftools-dev" "numactl" "perl-doc" "libfl2" "libfl-dev" "zlibc" "zlib1g" "zlib1g-dev")
     for package in ${ubt20_64_package_list[@]} ; do
         install_package $package
     done
 
-    dpkg -s verilator >/dev/null 2>&1 && {
-        echo "verilator has been installed."
-    } || {
-        wget -O /tmp/verilator_4_204_amd64.deb https://gitee.com/oscpu/install/attach_files/817254/download/verilator_4_204_amd64.deb
-        sudo dpkg -i /tmp/verilator_4_204_amd64.deb
-        rm /tmp/verilator_4_204_amd64.deb
-    }
+    git clone https://github.com/verilator/verilator   # Only first time
+
+    # Every time you need to build:
+    # unsetenv VERILATOR_ROOT  # For csh; ignore error if on bash
+    unset VERILATOR_ROOT  # For bash
+    cd verilator
+    git pull         # Make sure git repository is up-to-date
+    git tag          # See what versions exist
+    #git checkout master      # Use development branch (e.g. recent bug fixes)
+    #git checkout stable      # Use most recent stable release
+    git checkout v4.204  # Switch to specified release version
+
+    autoconf         # Create ./configure script
+    ./configure      # Configure and create Makefile
+    make -j `nproc`  # Build Verilator itself (if error, try just 'make')
+    sudo make install
+
+    # dpkg -s verilator >/dev/null 2>&1 && {
+    #     echo "verilator has been installed."
+    # } || {
+    #     wget -O /tmp/verilator_4_204_amd64.deb https://gitee.com/oscpu/install/attach_files/817254/download/verilator_4_204_amd64.deb
+    #     sudo dpkg -i /tmp/verilator_4_204_amd64.deb
+    #     rm /tmp/verilator_4_204_amd64.deb
+    # }
 }
 
 install_mill() {