Installing OPTIMIZED-ROUTINES

Use PuTTY to log in to the server as the root user.
Decompress the OPTIMIZED-ROUTINES installation package.
```
tar -xvf optimized-routines-20.02.tar.gz
```
Go to the directory generated after the decompression.
```
cd optimized-routines-20.02
```
Create a MATH directory.
```
mkdir -p /path/to/MATH
```
Copy the configuration file.
```
cp config.mk.dist config.mk
```
Modify the config.mk file.
1. Open the config.mk file.
```
vi config.mk
```
2. Press i to enter the edit mode.
  Modify the content in line 13.
```
CC = $(CROSS_COMPILE)clang
```
  Modify the content in line 19.
```
HOST_CC = clang
```
  After performing 6.a, press Esc, type :set nu, and press Enter to display the line number.
3. Press Esc, type :wq!, and press Enter to save the file and exit.
Perform the compilation and installation.
```
make
```
Copy the library file.
```
cp -r ./build/* /path/to/MATH
```

Add MATH to the environment variables.

export PATH=/path/to/MATH/bin:$PATH
export LD_LIBRARY_PATH=/path/to/MATH/lib:$LD_LIBRARY_PATH

Parent topic: Configuring the Compilation Environment