Compilation and Installation

Procedure

Use PuTTY to log in to the server as the root user.
Go to the main program installation directory.
```
cd /path/to/VMD
```
Decompress the installation package.
```
tar -xvf vmd-1.9.4a55.src.tar.gz
```
Go to the directory generated after the decompression.
```
cd vmd-1.9.4a55
```
Install FLTK.
```
yum install fltk fltk-devel
```
Install ACTC.
1. Create an ACTC directory and switch to the directory.
```
mkdir -p /path/to/VMD/vmd-1.9.4a55/lib/actc
cd /path/to/VMD/vmd-1.9.4a55/lib/actc
```
2. Download the ACTC installation package.
  https://sourceforge.net/projects/actc/
3. Decompress the installation package.
```
tar xvf actc-1.1.tar.gz
```
4. Compile ACTC.
```
mv actc-1.1/* ./
make
```
  If the command output contains libactc.a, the compilation is successful. For additional information, see README.
Install Stride.
1. Go to the stride directory.
```
cd /path/to/VMD/vmd-1.9.4a55/lib/stride
```
2. Download the Stride installation package.
  http://webclu.bio.wzw.tum.de/stride/stride.tar.gz
3. Decompress the installation package.
```
tar xvf stride.tar.gz
```
4. Install Stride.
```
make
```
5. Create a soft link.
```
ln -s /path/to/VMD/vmd-1.9.4a55/lib/stride/stride /path/to/VMD/vmd-1.9.4a55/lib/stride/stride_LINUXARM64
```

Install Surf.

Go to the Surf directory.
```
cd /path/to/VMD/vmd-1.9.4a55/lib/surf
```
Decompress the installation package.
```
tar xvf surf.tar.Z
```
Install Surf.
```
yum install imake
make depend
make surf
```

Create a soft link.

ln -s /path/to/VMD/vmd-1.9.4a55/lib/stride/surf /path/to/VMD/vmd-1.9.4a55/lib/stride/surf_LINUXARM64

Install VRPN.

Create a VRPN directory and switch to the directory.

mkdir -p /path/to/VMD/vmd-1.9.4a55/lib/vrpn
cd /path/to/VMD/vmd-1.9.4a55/lib/vrpn

Download the VRPN installation package.
https://github.com/vrpn/vrpn
Decompress the installation package.
```
unzip vrpn-master.zip
```

Install VRPN.

mv vrpn-master/* ./
mkdir build
cd build
yum install cmake libarchive
cmake ../ -DCMAKE_INSTAL_PREFIX=/path/to/vmd/vmd-1.9.4a55/lib/vrpn/
make && make install

Install Tachyon.

Go to the Tachyon directory.

cd /path/to/VMD/vmd-1.9.4a55/lib/tachyon

Download the Tachyon installation package.
https://ftp.sudhip.com/archlinux/other/community/tachyon/tachyon-0.99b6.tar.gz
Decompress the installation package.
```
tar xvf tachyon-0.99b6.tar.gz
```
Go to the unix directory of the installation package.
```
cd tachyon/unix
```
Modify the Make-config file.
1. Open the Make-config file.
```
vi Make-config
```
2. Press i to enter the edit mode and comment out the JPEG and PNG lines.
  Before the modification:
```
169 USEJPEG=
170 JPEGINC=
171 JPEGLIB=
...
189 USEPNG=
190 PNGINC=
191 PNGLIB=
```
  After the modification:
```
169 #USEJPEG=
170 #JPEGINC=
171 #JPEGLIB=
...
189 #USEPNG=
190 #PNGINC=
191 #PNGLIB=
```
  After performing 10.e.i, press Esc, type :set nu, and press Enter to display the line number.
3. Press Esc, enter :wq!, and press Enter to save the script and exit.
Delete the -m64 compilation parameters.
```
sed -i "s/-m64//" Make-arch
```

Modify the spaceball.c file.

Open the spaceball.c file.
```
cd ../ demosrc
vi spaceball.c
```

Press i to enter the edit mode, change port in line 35 to serialport, and add parentheses to lines 109, 110, and 111.

Before the modification:

35   if (port != NULL) {
...
109   if ((buttonchanged & SBALL_BUTTON_PICK) && (buttons & SBALL_BUTTON_PICK)) ||
110       (buttonchanged & SBALL_BUTTON_1) && (buttons & SBALL_BUTTON_1)) ||
111       (buttonchanged & SBALL_BUTTON_LEFT) && (buttons & SBALL_BUTTON_LEFT)) ) {

After the modification:

35   if (serialport != NULL) {
...
109   if (((buttonchanged & SBALL_BUTTON_PICK) && (buttons & SBALL_BUTTON_PICK)) ||
110       ((buttonchanged & SBALL_BUTTON_1) && (buttons & SBALL_BUTTON_1)) ||
111       ((buttonchanged & SBALL_BUTTON_LEFT) && (buttons & SBALL_BUTTON_LEFT)) ) {

After performing 10.g.i, press Esc, type :set nu, and press Enter to display the line number.

Press Esc, enter :wq!, and press Enter to save the script and exit.

Install Tachyon.
```
cd ../unix
make linux-64-thr
```

Create a soft link.

ln –s  /path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon/compile/linux-64-thr/tachyon /path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon_LINUXARM64

Install TCL 8.5 and TK 8.5.
1. Download the TCL and TK RPM packages.
  TCL: http://mirror.centos.org/altarch/7/os/aarch64/Packages/tcl-8.5.13-8.el7.aarch64.rpm
  
  http://mirror.centos.org/altarch/7/os/aarch64/Packages/tcl-devel-8.5.13-8.el7.aarch64.rpm
  
  TK: http://mirror.centos.org/altarch/7/os/aarch64/Packages/tk-8.5.13-6.el7.aarch64.rpm
  
  http://mirror.centos.org/altarch/7/os/aarch64/Packages/tk-devel-8.5.13-6.el7.aarch64.rpm
2. Use an SFTP tool to upload the TCL and TK installation packages to the /path/to/rpm directory on a server.
3. Install TCL and TK.
```
cd /path/to/rpm
rpm –ivh tcl-8.5.13-8.el7.aarch64.rpm
rpm –ivh tcl-devel-8.5.13-8.el7.aarch64.rpm
rpm –ivh tk-8.5.13-6.el7.aarch64.rpm
rpm –ivh tk-devel-8.5.13-6.el7.aarch64.rpm
```

Compile plugins.

Go to the plugins directory.
```
cd /path/to/VMD/plugins
```

Set the environment variables of the TCL header file and library file.

export TCL_INCLUDE_DIR=/usr/share/tcl8.5
export TCL_LIBRARY_DIR=/usr/lib64/tcl8.5

Perform the compilation.

make LINUXARM64
mkdir /path/to/vmd/vmd-1.9.4a55/plugins
export PLUGINDIR=/path/to/vmd/vmd-1.9.4a55/plugins
make distrib

Compile VMD.

Go to the vmd-1.9.4a55 directory.
```
cd /path/to/vmd/vmd-1.9.4a55/
```

Modify the configuration file.

Open the configuration file.
```
vi configure
```

Press i to enter the edit mode.

Set the installation path.

$install_bin_dir="/path/to/vmd/ vmd-1.9.4a55/bin";
$install_library_dir="/path/to/vmd/ vmd-1.9.4a55/lib/vmd";

Set the Tachyon environment variables.

$libtachyon_dir="/path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon";
$libtachyon_include="-I/path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon/src";
$libtachyon_library="-L"/path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon/compile/linux-64-thr;

Modify the $arch_nvccflags parameter of Linux ARM64 and comment out "-gencode arch=compute_30,code=compute_30 " .s.

Before the modification:

16 $install_bin_dir="/usr/local/bin";
17
18 # Directory where VMD files and executables are installed
19 $install_library_dir="/usr/local/lib/$install_name";
...
1354 $libtachyon_dir         = "$vmd_library_dir/tachyon";
1355 $libtachyon_include     = "-I$libtachyon_dir/include";
1356 $libtachyon_library     = "-L$libtachyon_dir/lib_$config_arch";
...
2627                     "-gencode arch=compute_30,code=compute_30 " .

After the modification:

16 $install_bin_dir="/path/to/vmd/vmd-1.9.4a55/bin";
17
18 # Directory where VMD files and executables are installed
19 $install_library_dir="/path/to/vmd/vmd-1.9.4a55/lib/vmd";
...
1354 $libtachyon_dir         = "/path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon";
1355 $libtachyon_include     = "-I/path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon/src";
1356 $libtachyon_library     = "-L/path/to/vmd/vmd-1.9.4a55/lib/tachyon/tachyon/compile/linux-64-thr";
...
2627   #"-gencode arch=compute_30,code=compute_30 " .

After performing 13.b.i, press Esc, type :set nu, and press Enter to display the line number.

Press Esc, enter :wq!, and press Enter to save the script and exit.

Perform the compilation.
```
./configure LINUXARM64 EGLPBUFFER CUDA IMD LIBTACHYON ZLIB COLVARS TCL PTHREADS SILENT
cd src && make veryclean
make
```
If "No resource compiler required on this platform" is displayed, the compilation is successful.
```
make install
```
If "Make sure /Projects/vmd/ vmd-1.9.4a55/bin is in your path.VMD installation complete. Enjoy!" is displayed, the installation is successful.

Parent topic: VMD 1.9.4 Porting Guide (CentOS 8.2)