Compilation and Installation

Use PuTTY to log in to the server as the root user.
Run the following command to go to the main program installation directory:
```
cd /path/to/WANNIER90
```
Run the following command to decompress the main program installation package:
```
tar -xvf wannier90-3.1.0.tar.gz
```
Run the following command to go to the directory generated after decompression:
```
cd wannier90-3.1.0
```
Run the following command to perform build Wannier90:
```
cp ./config/make.inc.gfort ./make.inc
```
Run the following commands to modify the make.inc file:
1. Open the make.inc file.
```
vi make.inc
```
2. Press i to go to the insert mode.
  - Uncomment lines 7 and 8, and modify line 8 as follows:
```
MPIF90 = mpif90
```
  - Modify line 10 as follows:
```
FCOPTS = -O3 -march=armv8.2-a -mcpu=tsv110
```
  - Uncomment line 21 and modify it as follows:
```
LIBDIR = /usr/lib64
```
  - Modify line 37 as follows:
```
LIBS = -L$(LIBDIR) -llapack -lblas -Wl,-rpath=/path/to/KPGCC/gcc-9.3.1-2020.12-aarch64-linux/lib64/libhpc -L/path/to/KPGCC/gcc-9.3.1-2020.12-aarch64-linux/lib64/libhpc -lmathlib -lm
```
3. Press Esc, type :wq!, and press Enter to save the file and exit.

Run the following command to configure the environment variables of the mathlib library:

export LD_LIBRARY_PATH=/path/to/KPGCC/gcc-9.3.1-2020.12-aarch64-linux/lib64/libhpc:$LD_LIBRARY_PATH

Run the following command to compile and install Wannie90:
```
make -j 16
```
After the compilation and installation are complete, two executable files postw90.x and wannier90.x are generated.

Parent topic: Wannier90 3.1.0 Porting Guide (CentOS 7.6)