Compiling the FORTRAN code for CoMP analysis

The CoMP-type coronal polarimetry forward modeling use Fortran routines requiring a Fortran compiler.

IMPORTANT—PROBABLY YOU NEED TO COMPILE ON THE SAME MACHINE YOU RUN ON.

• First make sure you have a Fortran compiler. GFORTRAN and G77 are possibilities (note G77 is considered obsolete however).
  • GFORTRAN Binaries is a useful resource.
  • And for mac, some more up to date versions.
  • And for windows, people have had some success with cygwin —see notes in Windows Troubleshooting Guide.
• Mac/Linux
  • Go to directory $FORWARD/FORCOMP
  • Rename compiler if necessary: edit makefile
    • In the first few lines, FC and LINK should be changed from gfortran to g77 if that is your compiler
  • Remove any old .o files and compiled code (if they are there), and recompile the fortran code on your machine.
    • cd $FORWARD/FORCOMP
    • rm forcomp
    • rm *.o
    • make forcomp
    • If this fails, you may need to install command line tools in Xcode, from command line try: "xcode-select —install".
      Or else you may be able to do this from the XCode preferences/downloads.
  • SAVE your executable (forcomp) to $FORWARD_WORKING_DIR.
    • By saving your own, platform-specific executable you don't have to recompile every time FORWARD updates.
      If you run into problems, you might check the date stamp on the files in $FORWARD/FORCOMP.
      The Fortran codes are not updated often, but if they are, you need to recompile.

• Windows
  • Open command line under Windows
    • Note: to change to directory in Windows terminal, sometimes you need first to change disks. Example, say you are in D, but want to go to C, from prompt type: "C:", then you can chage to a directory in that disk: "CD C:\G77".
  • Rename compiler if necessary:
    • In the first few lines, FC and LINK should be changed from gfortran to g77 if that is your compiler.
  • You may have to initialize the compiler
    • (for example, if you have G77):
      • g77setup
  • ALSO you may need to add these lines to your SSWIDL.BAT file:
    • (for example, if you have G77):
      • SET OLDPATH=%PATH%
      • PATH=C:\g77\bin;%PATH%
      • SET LIBRARY_PATH=C:\g77\lib
  • Compile
    • From command line type: "make forcomp"
  • SAVE your executable (forcomp) to $FORWARD_WORKING_DIR.
    • By saving your own, platform-specific executable you don't have to recompile every time FORWARD updates.
      If you run into problems, you might check the date stamp on the files in $FORWARD/FORCOMP.
      The Fortran codes are not updated often, but if they are, you need to recompile.