This is the mail archive of the cygwin mailing list for the Cygwin project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: g77 on cygwin64




On 12/02/2014 04:54, Scott T. Marshall wrote:
Hi All,
First a compliment: I recently went from the old x86 version of cygwin
to cygwin64. I was pleased to see that many of my perl scripts run about
twice as fast. Thanks!

My question: Would it be possible to have the old g77 fortran compiler
as an optional install for cygwin64? I realize that g77 is now
deprecated by gfortran, but I have a lot of old fortran 77 code that
does not compile correctly with gfortran. Since I am not a fortran coder
(I mainly use interpreted languages), I do not have the skills to figure
out what the issues with gfortran are. It would immensely useful to have
a cygwin64 g77 as an optional install.

If this is not an option, could anyone maybe point me in the right
direction as to how to compile g77 myself? I attempted to do so with an
old g77 from gcc version 3.4.6, but the makefiles do not recognize the
uname of cygwin64, and I'm not sure of what compiler flags to use, so
the build always fails.

Any tips/suggestions would be appreciated.
Cheers,
-Scott


have you tested with -std=legacy ?

'-std=STD'
     Specify the standard to which the program is expected to conform,
     which may be one of 'f95', 'f2003', 'f2008', 'gnu', or 'legacy'.
     The default value for STD is 'gnu', which specifies a superset of
     the Fortran 95 standard that includes all of the extensions
     supported by GNU Fortran, although warnings will be given for
     obsolete extensions not recommended for use in new code.  The
     'legacy' value is equivalent but without the warnings for obsolete
     extensions, and may be useful for old non-standard programs.  The
     'f95', 'f2003' and 'f2008' values specify strict conformance to the
     Fortran 95, Fortran 2003 and Fortran 2008 standards, respectively;
     errors are given for all extensions beyond the relevant language
     standard, and warnings are given for the Fortran 77 features that
     are permitted but obsolescent in later standards.  '-std=f2008ts'
     allows the Fortran 2008 standard including the additions of the
     Technical Specification (TS) 29113 on Further Interoperability of
     Fortran with C.


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]