Compilation and Installation

Use PuTTY to log in to the server as the root user.
Go to the SPIDER installation directory.
```
cd /path/to/SPIDER
```
Decompress the installation package.
```
tar -xvf spiderweb.24.08.tar.gz
```
Go to the web module directory generated after the decompression.
```
cd web/src
```
Install the dependencies.
```
yum install motif libXp libXt libX11 libSM libxcb libXau libXp-devel motif-devel
```
If there is no output after you run the echo $DISPLAY command, open the shell window again.
Compile the web module.
```
make -f Makefile_linux_dir64
```
Go to the SPIDER module directory generated after the decompression.
```
cd ../../spider/src
```

Modify the configuration file. For details, see Table 1.

**Table 1** Modifying the configuration file
File Name	Procedure
star2doc.f	Open the star2doc.f file. vi star2doc.f Set the line number. :set nu Press i to enter the insert mode. Modify line 358 as follows: 358 READ(CTOKEN(1:NCHAR),) IDLIST Press Esc, type :wq!, and press Enter* to save the file and exit.
pw3sr.f	Open the pw3sr.f file. vi pw3sr.f Set the line number. :set nu Press i to enter the insert mode. Modify lines 37 and 38 as follows: 37 INTEGER :: NX,NY,NZ 38 REAL :: Q(NX+2-MOD(NX,2),NY,NZ) Press Esc, type :wq!, and press Enter to save the file and exit.
pw2sr.f	Open the pw2sr.f file. vi pw2sr.f Set the line number. :set nu Press i to enter the insert mode. Modify lines 241 and 242 as follows: 241 INTEGER :: NX,NY 242 REAL :: Q(NX+2-MOD(NX,2), NY) Press Esc, type :wq!, and press Enter to save the file and exit.
pr3d.f	Open the pr3d.f file. vi pr3d.f Set the line number. :set nu Press i to enter the insert mode. Modify line 88 as follows: 88 WANTSQRTS = (FSCOP .eqv. .TRUE.) Press Esc, type :wq!, and press Enter to save the file and exit.
Makefile_linux.gfort	Open the Makefile_linux.gfort file. vi Makefile_linux.gfort Set the line number. :set nu Press i to enter the insert mode. Modify line 39 as follows: 39 FFTWLIBDIR = path/to/fftw/lib Press Esc, type :wq!, and press Enter to save the file and exit.

Compile the SPIDER module.

yum install gcc-gfortran.aarch64
make -f Makefile_linux.gfort

Parent topic: SPIDER 24.08 Porting Guide (CentOS 7.6)