Compilation and Installation

Use PuTTY to log in to the server as the root user.
Go to the Wannier90 installation package directory.
```
cd /path/to/WANNIER90
```
Decompress the Wannier90 installation package.
```
tar -xvf wannier90-3.1.0.tar.gz
```
Go to the directory generated after the decompression.
```
cd wannier90-3.1.0
```
Build Wannier90.
```
cp ./config/make.inc.gfort ./make.inc
```
Modify the make.inc file.
1. Open the make.inc file.
```
vi make.inc
```
2. Press i to enter the edit mode and modify the file as follows:
  - Modify line 4 as follows:
```
F90=flang
```
  - Uncomment lines 7 and 8, and modify line 8 as follows:
```
MPIF90 = mpif90
```
  - Uncomment line 21 and modify it as follows:
```
LIBDIR=/path/to/OPENBLAS/lib
```
  - Modify line 37 as follows:
```
LIBS = -L$(LIBDIR) -lopenblas
```
    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.
Compile and install Wannier90.
```
make
make install
```
After the compilation and installation are complete, two executable files postw90.x and wannier90.x are generated in the wannier90-3.1.0 directory.

Parent topic: Wannier90 3.1.0 Porting Guide (openEuler 21.03)