Compiling the Source Code

Go to the installation directory using the following command. You can replace /home with your actual installation path.
1

cd /home

Download the source code.

       
            git clone --recursive --shallow-submodules https://github.com/ClickHouse/ClickHouse.git -b v24.3.11.7-lts --single-branch --depth=1
cd ClickHouse
git submodule sync
git submodule update --init --recursive

This process is time-consuming because a large number of files need to be synchronized.

After the source code is downloaded and the submodules are updated, perform the following steps to check the integrity of the source code.

Create a check script in the /home/ClickHouse directory.
1

vi file_check.sh

Press i to enter the insert mode and add the following content to the file. Check that each file directory contains files and is not empty.

#!/bin/bash
base_dir=$(cd $(dirname "$0")&&pwd)
flag=0
for dir in $(ls -d "$base_dir"/contrib/*/);
do
   file_count=$(ls -1 "$dir" | wc -l)
   if [ "$file_count" -eq 0 ]; then
       echo "Directory with 0 files: $dir"
       flag=1
   fi
done
if [ $flag -eq 0 ]; then
   echo "Check completed. No empty folder found in the contrib directory."
fi

Press Esc, type :wq!, and press Enter to save the file and exit.

Run the script.

         
              chmod +x file_check.sh
./file_check.sh

Upon successful validation, the message "Check complete. No empty folder found in the contrib directory." is displayed.

Modify compilation options.

Go to the /home/ClickHouse/cmake directory and open the cpu_features.cmake file.

         
              cd /home/ClickHouse/cmake
vi cpu_features.cmake

Press i to enter the insert mode and modify the NO_ARMV81_OR_HIGHER compilation option (line 26 in the current version) as follows:

         
              set (COMPILER_FLAGS "${COMPILER_FLAGS} -march=armv8.2-a+simd+crypto+dotprod")

SIMD instructions are added to NO_ARMV81_OR_HIGHER, and -DENABLE_THINLTO=ON is added to the compilation options. This can improve the performance.

Press Esc, type :wq!, and press Enter to save the file and exit.

Build and compile ClickHouse.

       
            cd /home/ClickHouse/
mkdir build
cmake -DPARALLEL_COMPILE_JOBS=`nproc` -DENABLE_CLICKHOUSE_SELF_EXTRACTING=1 -DNO_ARMV81_OR_HIGHER=1 -DENABLE_BUILD_PROFILING=ON -DPARALLEL_LINK_JOBS=32 -DENABLE_THINLTO=ON -DENABLE_TESTS=OFF -DENABLE_RUST=OFF -S . -B build

If the following information is displayed, the build is successful:

After the build is complete, the structure of the build directory is as follows (run the ls ./build command to view it).

       
            cmake --build build -j `nproc`

After the compilation is complete, the following files are generated in the build/programs directory (run the ll ./build/programs command to view the files).

Install ClickHouse. When the message "Enter password for the default user" is displayed, press Enter.
```
./build/programs/clickhouse install
```

Parent topic: Porting Guide (openEuler)