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RE: I need help on how to use the Cygwin fortran compiler. Thanks, Dr. McNeill
- From: "Robinow, David" <drobinow at dayton dot adroit dot com>
- To: "'Dr. James H. McNeill'" <jmcneill at chem dot siu dot edu>, cygwin at cygwin dot com
- Date: Tue, 8 Jan 2002 10:56:41 -0500
- Subject: RE: I need help on how to use the Cygwin fortran compiler. Thanks, Dr. McNeill
Do you have a Cygwin icon on your desktop?
If not, go to http://sources.redhat.com/cygwin and "Install Cygwin now"
You should install, at least, Base, Devel, and Shells packages.
Click on the Cygwin icon. This should bring up a bash shell.
Are you familiar with unix? If not, you should find a tutorial somewhere.
Although Cygwin is a great way for Windows users
to access free software, it's really aimed at
somewhat experienced unix/linux users who need to
run on Windows.
In your bash shell
g77 -c fmain.f will compile the fortran file fmain.f,
putting the object file in fmain.o
g77 fmain.f -o fmain will compile fmain.f and putting an
executable in fmain.exe
g77 -c fsubr1.f
g77 -c fsubr2.f
g77 -c fsubr3.f
g77 -c fcaller.f
g77 fcaller.o fsubr1.o fsubr2.o fsubr3.o -o fprogram
will compile and link multiple source files.
g77 -help gives more information.
From: Dr. James H. McNeill [mailto:firstname.lastname@example.org]
Sent: Tuesday, January 08, 2002 10:41 AM
Subject: I need help on how to use the Cygwin fortran compiler. Thanks,
Recently I purchased a HP Pavilion 750n PC, which has Windows XP, to
perform numerical calculations at home relative to my theoretical research
in physical chemistry. I thought about purchasing a FORTRAN compiler but a
friend of mine suggested that instead I download Cygwin and use the
available FORTRAN compiler in this package of free-ware. Well I did that
last night, and from reading his E-mail instructions I was to download the
g77 FORTRAN compiler. However, it did not work on my new PC at home. Yet,
I only could access the g77 FORTRAN compiler in DOS via Command statement
on RUN. If there is instead a FORTRAN compiler already with the Cygwin and
I was not suppose to use g77 please let me know ,and please inform me on
how to access this Cygwin FORTRAN compiler if it exists. I tried searching
for any FORTRAN compiler that came with Cygwin but I could not find any
statement on how to utilize it on the web site. Your assistance will be
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