The Ferret program from NOAA/PMEL.
See https://ferret.pmel.noaa.gov/Ferret/ for more information about Ferret and PyFerret.

This repository is regularly synchronized with Ferret repository at PMEL (the trunk of the ferret project in the subversion repository at PMEL) using git-svn.

This repository is a software product and is not official communication of the National Oceanic and Atmospheric Administration (NOAA), or the United States Department of Commerce (DOC). All NOAA GitHub project code is provided on an 'as is' basis and the user assumes responsibility for its use. Any claims against the DOC or DOC bureaus stemming from the use of this GitHub project will be governed by all applicable Federal law. Any reference to specific commercial products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply their endorsement, recommendation, or favoring by the DOC. The DOC seal and logo, or the seal and logo of a DOC bureau, shall not be used in any manner to imply endorsement of any commercial product or activity by the DOC or the United States Government.

For more information on using Ferret, see the Ferret documentation under https://ferret.pmel.noaa.gov/Ferret/

Information about the Ferret email users group, and archives of past discussions from the group (which should be searched prior to sending a question to the email users group) can be found at https://ferret.pmel.noaa.gov/Ferret/email-users-group

1. We highly recommend you build and use PyFerret (see: https://github.com/NOAA-PMEL/PyFerret) instead of Ferret. PyFerret provides publication-quality graphics and much more funtionality while still maintaining the Ferret command prompt and compatibility with existing Ferret scripts. PyFerret uses Qt for displayed graphics, removing the need for X-Windows software libraries and header files for Ferret builds. PyFerret maintains this Ferret repository as an upstream source, so updates to Ferret will also be found in the "Ferret engine" within PyFerret.

2. If you still wish to build Ferret, more information on building Ferret can be found in the README_build_ferret and the README_ferret_mac_homebrew.md files in this repository. This second file can also provide some useful information about building Ferret on Linux and Unix-type systems.

3. The site_specific.mk.in and external_functions/ef_utilites/site_specific.mk.in files in the repository must be copied to files without the .in extensions, and the contents of these site_specific.mk files edited for your system configuration. The site_specific.mk files will be ignored by git (the name was added to .gitignore) so your customized configuration files will not be added to your repository if you have cloned this repository.

4. The definitions of CC, FC, and LD (the last only for building external functions written in Fortran) were moved to the site_specific.mk.in files. (These were previously defined in the platform_specific.mk.* files.) If you already have customized site_specific.mk files, please appropriately updated your customized files with these additional definitions.