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1996-11-09
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The GNU Fortran compiler
========================
Introduction
------------
This is a port of the GNU Fortran compiler (version 0.5.18) for the
Fortran 77 and 90 programming language dialects to the Acorn range of
ARM based machines, running under RISC OS. As such, this package is
covered by the FSF General Public License (see the files docs.COPYING
and docs.COPYINGLIB for details).
This port is © 1996 Nick Burrett
As with GNU programs, THERE IS NO WARRANTY OF ANY SORT
This compiler requires a minimum 2800Kb of free RAM for compilations.
Files
-----
This is a binary distribution only and consists of the following files:
bin.f771 The Fortran compiler
bin.g77 The Fortran compiler front end
docs.g77 Fortran compiler instruction manual
docs.Fortran77 This documentation
gcc.o.libf2c Fortran compiler runtime library
The compiler sources (about 1600Kb) can be obtained from the sites listed at
the end of docs.!Intro.
Installation
------------
Before attempting to use GNU C, it should be noted that this distribution
will require the GCC front end files stored in the archive gccmain.zip.
If you do not have a copy of this, it can be retrieved from
ftp://micros.hensa.ac.uk/micros/arch/riscos/b/b013/gccmain.zip
and relevant mirrors.
GNU Fortran 0.5.18 also requires UnixLib 3.7a or later, but not UnixLib 4.0.
GNU Fortran will not work with UnixLib 3.6e or earlier.
Compiling Fortran source
------------------------
Fortran source files can be kept in either the 'for' or 'f' directories.
Fortran comes with an extra file called g77. g77 is a front end binary for
the Fortran compiler, and will automatically include the necessary run-time
library needed by Fortran whenever the compilation needs it.
Typing:
gcc -c f.test
or g77 -c f.test
will compile the Fortran file, test, into an AOF file and store it in the
'o' directory.
Typing:
gcc f.test -o test -lf2c -Wl,-rescan
is equivalent to:
g77 f.test -o test -Wl,-rescan
libf2c is the standard run-time library required by Fortran. Notice the
extra command line option '-Wl,-rescan'. This requests drlink to rescan
all libraries to try and resolve missing references. It is equivalent
to passing '-rescan' on the drlink command line.
All GNU compilers require the library gcc:o.libgcc to operate. So separate
compile and link operations must include this.
Known problems
--------------
If you find a bug then please read the file docs.bugs for what to do if
you have found a bug.
This is an early release of the GNU Fortran compiler, therefore I can't
be expected to make major enhancements to it's functionality. A large
number of bugs are caused by the run-time library and UnixLib, when
these are identified they are usually fixed quickly.
Known Restrictions
------------------
There are currently no known restrictions.
Contacting me
-------------
I can be contacted by e-mail at: nickb@digibank.demon.co.uk
However, if there is no response from that address I can be contacted
through Simon Callan: gcc@callan.demon.co.uk.