I am Xuetianyu, a FPGA enthusiast, and my research direction is FPGA architecture exploration.

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OpenROAD supports RTL to GDS Flow, a back-end physical implementation of chip design.

Download and compile Code

1.1 Code Download and Dependent Installation

Open the terminal and enter

git clone --recursive https://github.com/The-OpenROAD-Project/OpenROAD.git
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To install dependencies, type:

cd OpenROAD
sudo ./etc/DependencyInstaller.sh -run
sudo ./etc/DependencyInstaller.sh -dev
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Boost, SWIg, Eigen, lemon, and spdlog will be automatically installed.

Install some libraries for compilation:

sudo apt-get install libspdlog-dev
sudo apt install tcl-dev
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Second, code compilation

2.1 Manual Compilation

Open the terminal in the OpenROAD folder and type;

mkdir build
mkdir install 
cd build 
cmake .. -DCMAKE_INSTALL_PREFIX=/home/jc-cao/Disk_sda3/Fudan_FPGA/OpenROAD/install
make DESTDIR=/home/jc-cao/Disk_sda3/Fudan_FPGA/OpenROAD/install install
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Make install takes a long time. Wait patiently. Then I got stuck at 52%:I don’t know how to solve this problem. The library has been downloaded, but it just doesn’t work. Note:-DCMAKE_INSTALL_PREFIX 和 DESTDIRAre used to specify the installation folder path.

2.2 Official Script Compilation

Instead, try the official one-click compilation script. Type in the OpenROAD folder:

./etc/Build.sh 
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Note: Install to by default/usr/localIn the path, I have enough space on my hard drive, so I’ll go to the default location.Wait patiently for compilation to complete.It reached 100%, but some errors were reported. After testing, repeat the script several times until no error is reported.

2.3 Functional Test

Finally, test whether the compilation is successful:

Test the tool first. /test/regression
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There are many tool units for the test, so wait patiently:No problem! Then test the flow

# run all flow tests. /test/regression flow
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This test will take a long time, and my computer CPU (i7) is almost full. OK, there is a small problem, skywater130nm PDK hd was not downloaded at the time, we will debug later, after the test, we can confirm that OpenROAD compilation is complete, you can use OpenROAD happily, then I will blog to explain how to use OpenROAD for digital IC design

2.4 Problems encountered and solutions

CMake Error at/usr/share/CMake - 3.16 / Modules/FindPackageHandleStandardArgs. CMake: 146 (the message) : Could NOT find SWIG (missing: SWIG_EXECUTABLE SWIG_DIR) (Required is at least version"3.0")
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Solution: Go to the official website to download SWIG, I downloaded swiG-4.0.0, after downloading, first decompress, then open the terminal, enter:

./configure
make
sudo make install	
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To install the pcRE, go to the official website to download pcRE, decompress the download, open the terminal, enter:

./configure
make
sudo make install
cd ./.libs
sudo mv -v libpcre.so.* /usr/lib/
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Check the swig version:

swig -version
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Installation successful!

(2)

CMake Error at src/dpo/CMakeLists.txt:41 (find_package):
  By not providing "FindLEMON.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "LEMON", but
  CMake did not find one.

  Could not find a package configuration file provided by "LEMON" with any of
  the following names:

    LEMONConfig.cmake
    lemon-config.cmake

  Add the installation prefix of "LEMON" to CMAKE_PREFIX_PATH or set
  "LEMON_DIR" to a directory containing one of the above files.  If "LEMON"
  provides a separate development package or SDK, be sure it has been
  installed.
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Problem analysis: Library LEMON is missing. Download and install itThe solution: Go download it firstLEMONAnd I chose yesLemon - 1. Tar. Gz: After decompressing, enter the folder, open the terminal, and enter:

mkdir build
cd build
cmake ..
make
sudo make install
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Then set lemon’s path variable in the first line of OpenROAD/ cmakelists. TXT:

set(LEMON_DIR /usr/local/include/lemon)
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(3)

OpenROAD/SRC/utl/CMakeFiles/utl dir/LoggerTCL_wrap CXX: 166:10: fatal error: TCL. H: don't have that file or directoryCopy the code

Problem analysis: CAN’t find TCL, H, but CLEARLY I have installed TCL. /usr/include/tcl8.6 It turns out that TCL8.6 won’t work. Another version will be installed. Solution: The installation command is:

sudo apt install tcl-dev
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Third, summary

Feeling every time to build an open source tools, especially when large tool is very troublesome, very easy to get wrong, but with the joint efforts of developers, now out CMake such great convenient code compilation, cross-platform tools, believe that later set up development environment will be more and more relaxed, open source EDA tools of ecological will be getting better and better.

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