To install Photran 4.0 beta 5,
- you must have Eclipse 3.4 (Ganymede) installed,
- you must have the C/C++ Development Tools (CDT) 5.0 installed,
- Eclipse must be running on a Java 1.5 or later JVM (to get reasonable performance, we recommend Sun  or IBM's  JVM), and
- if you want to compile and build Fortran applications, you must have a make utility and a Fortran compiler in your system path. Many Linux/Unix systems include these; details on installing them in Windows are below.
To install Photran, start Eclipse 3.4, then...
- Download the latest Photran zip file from 
- Click on Help > Software Updates...
- Click on the "Available Software" tab
- Click on "Add Site..."
- Click Archive...
- Choose the zip file you downloaded from 
- Click OK to close the Add Site dialog
- The zip file should appear in the list as jar:file:/path/to/photran-master-4.0.5-something. Expand it.
- Expand "Photran (Eclipse Fortran Development Tools)" and check the box next to "Photran (Eclipse Fortran Development Tools) (Eclipse Technology Incubation)"
- If you have Intel Fortran installed on Linux or IBM XLF installed on Mac, then expand "Photran Compiler Support" and select the appropriate compiler as well.
- Click on the "Install..." button in the upper-right corner of the dialog box.
Additional Instructions for Windows Users
To compile and run Fortran programs in Photran, you will need to have a Fortran compiler and make utility installed. Most Linux/Unix distributions include these; [] is commonly used (and free). Under Windows, you will need to install Cygwin  or MinGW  and put them on your Windows PATH. Detailed instructions for Cygwin follow.
- Install Cygwin ; the defaults are mostly OK, but you will need to explicitly tell it to include the "Devel" packages (at least gcc4-fortran, gdb, and make) when the installer asks you to select what packages to install
- Add the Cygwin directories to your Windows PATH. Under Windows XP, the process is as follows:
- Make sure you are logged in under an administrator account.
- Open the Control Panel.
- Double-click the System icon.
- Switch to the Advanced tab.
- Click the Environment Variables button.
- Under System Variables, find the variable "Path" in the list, and click on it.
- Click Edit.
- At the end of the "Variable Value" text, add
- Click OK, click OK, click OK, and close the Control Panel.
- Close and re-open Photran. Windows should now search C:\Cygwin\bin, C:\Cygwin\usr\bin, etc. when it's looking for executables (including make.exe, gcc.exe, and gfortran.exe).
See the FAQ