Re: compatibility g77/gfortran ?

Thierry B. wrote:
Bonsoir.

I have a few old Linux box with g77 v3.4.6 where i run homemade
software. My new machine come with gfortran v4.1.2 and is a lot
faster, so I use it as my main developement area. Compile fine
all my old softwares.

And i'm looking for the best way (command line opt ?) to check
if the code that I write and compile with gfortran can also
be compiled and run on the old boxes.

Any link on a good documentation are welcome.

tTh.

Well, Sun's Studio Express compiler-set is available for Linux
free for commercial and nomcommercial use; see a number of posts
here by Bob Corbett of Sun.

When Sun "f95" is used with command-line flag "-f77", it acts
as a strict F77compiler and flags non-F77 features -- actually,
that's a bit more strict than "g77" is. And their compiler
has excellent diagnostics.

Actually, I find it worthwhile _always_ to run through multiple
compilers (Sun, Intel, PathScale, gfortran, g95); each has its
strengths and weaknesses for diagnostic messages...) I set it
up so that each compiler has its own "makeinclude.<bin>" file,
and then set up my "Makefile" so that "make bins" recursively
cycles through all the cases of "make bin=<compiler> all".

-- Carlie Coats

.

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