id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
913	VERY IMPORTANT: gfortran issues	arango		"Recently, there have been a few messages about compiling ROMS with **gfortran**. Many users have different versions of this compiler: ancient and recent ones. Remember that **gfortran** is a free downloadable compiler, so you get what you ''pay'' for it. Thus, it is advantageous to have a ''pay-for'' compiler option to avoid frustrations with some of the newer features of the 2003/2008 standard, parallel random number generators used in Lagrangian trajectory (**FLOATS**) and 4D-Var algorithms, numerical precision, efficiency, and so on.

I am not a big fan of **gfortran** because the debugging objects do not have the rich information needed in the **!TotalView Debugger**. Most of my **!TotalView** debugging is done with **ifort**.

Now, there is an issue with the exquisite, compact, and valid statement in the **yaml_parser.F**:
 {{{
     nkeys=COUNT((/ (Kstring(i:i), i=1,Lstr) /) == CHAR(46)) + 1
}}}
I fixed that problem by creating the new function **yaml_CounterKey** to execute such a statement in **gfortran** successfully:
 {{{
     nkeys=yaml_CountKeys(Kstring, CHAR(46))
}}}
Here is an excellent example of how we have to change code to account for **gfortran** deficiencies. Luckily, I can control such changes even if the code is less compact."	upgrade	closed	major	Release ROMS/TOMS 4.1	Nonlinear	4.0	Done