Rme/cesm pop 2 1 20240202

.gitignore

@@ -1,11 +1,5 @@
 # gitignore for POP2
 
-# directories checked out by manage_externals, and other files created
-# by manage_externals
-manage_externals.log
-externals/MARBL
-externals/CVMix
-
 # binary files
 *.nc
 

.gitmodules

@@ -0,0 +1,14 @@
+[submodule "CVMix"]
+path = externals/CVMix
+url = https://github.com/CVMix/CVMix-src
+fxtag = v0.98-beta
+fxurl = https://github.com/CVMix/CVMix-src
+fxrequired = AlwaysRequired
+
+[submodule "MARBL"]
+path = externals/MARBL
+url = https://github.com/marbl-ecosys/MARBL
+fxtag = marbl0.43.0
+fxurl = https://github.com/marbl-ecosys/MARBL
+fxrequired = AlwaysRequired
+

README_EXTERNALS

@@ -1,12 +1,6 @@
-POP is released via subversion, but it includes external code that is released
-via git. Rather than relying on subversion's svn:externals property, POP now
-uses the manage_externals utility from
+POP contains external submodules for MARBL and CVMIX.
+You can get these using the git-fleximod tool from
+https://github.com/ESMCI/git-fleximod
+or by using the
+git submodule update --init
 
-https://github.com/NCAR/manage_externals
-
-Since this is not tied to subversion, after checking out POP users must run
-
-    $ ./externals/manage_externals/checkout_externals
-
-Note that CESM also uses manage_externals and will run checkout_externals when
-checking out POP, so this step is only necessary for non-CESM checkouts of POP.