gcc/libf2c
Dave Love 63393d8cc7 Update versions to 0.5.23.
From-SVN: r20509
1998-06-15 07:57:08 +00:00
..
libF77 Update versions to 0.5.23. 1998-06-15 07:57:08 +00:00
libI77 Update versions to 0.5.23. 1998-06-15 07:57:08 +00:00
libU77 Update versions to 0.5.23. 1998-06-15 07:57:08 +00:00
ChangeLog Makefile.in (install): Don't install if $(libsubdir) is empty... 1998-06-15 07:52:05 +00:00
ChangeLog.egcs Fix entries (JCB). 1998-05-18 11:10:31 +00:00
Makefile.in Makefile.in (install): Don't install if $(libsubdir) is empty... 1998-06-15 07:52:05 +00:00
README Makefile.in (install): Don't install if $(libsubdir) is empty... 1998-06-15 07:52:05 +00:00
TODO * Previous contents of gcc/f/runtime moved into toplevel 1998-01-31 18:37:08 -07:00
changes.netlib Update to Netlib version of 1998-04-20 1998-05-19 10:52:03 +00:00
configure Makefile.in (install): Don't install if $(libsubdir) is empty... 1998-06-15 07:52:05 +00:00
configure.in Makefile.in (install): Don't install if $(libsubdir) is empty... 1998-06-15 07:52:05 +00:00
disclaimer.netlib * Previous contents of gcc/f/runtime moved into toplevel 1998-01-31 18:37:08 -07:00
f2c.h Makefile.in (install): Don't install if $(libsubdir) is empty... 1998-06-15 07:52:05 +00:00
f2cext.c Various changes from Craig. See the appropriate ChangeLog files. 1998-02-22 12:25:07 -07:00
g2c.h.in Makefile.in (install): Don't install if $(libsubdir) is empty... 1998-06-15 07:52:05 +00:00
permission.netlib * Previous contents of gcc/f/runtime moved into toplevel 1998-01-31 18:37:08 -07:00
readme.netlib Update to Netlib version of 1998-04-20 1998-05-19 10:52:03 +00:00

README

1998-04-20

This directory contains the f2c library packaged for use with g77 to configure
and build automatically (in principle!) as part of the top-level configure and
make steps.  This depends on the makefile and configure fragments in ../f.
g77 names this library `libg2c' to avoid conflict with existing copies
of `libf2c' on a system.

Some small changes have been made to the f2c distributions of lib[FI]77 which
come from <ftp:bell-labs.com/netlib/f2c/> and are maintained (excellently) by
David M. Gay <dmg@bell-labs.com>.  See the Notice files for copyright
information.  I'll try to get the changes rolled into the f2c distribution.

Files that come directly from netlib are either maintained in the
gcc/f/runtime/ directory under their original names or, if they
are not pertinent for g77's version of libf2c, under their original
names with `.netlib' appended.  For example, gcc/f/runtime/permissions.netlib
is a copy of f2c's top-level`permissions' file in the netlib distribution.
In this case, it applies only to the relevant portions of the libF77/ and
libI77/ directories; it does not apply to the libU77/ directory, which is
distributed under different licensing arrangements.  Similarly,
the `makefile.netlib' files in libF77/ and libI77/ are copies of
the respective `makefile' files in the netlib distribution, but
are not used when building g77's version of libf2c.

The `README.netlib' files in libF77/ and libI77/ thus might be
interesting, but should not be taken as guidelines for how to
configure and build libf2c in g77's distribution.

The packaging for auto-configuration was done by Dave Love <d.love@dl.ac.uk>.
Minor changes have been made by James Craig Burley <burley@gnu.org>,
who probably broke things Dave had working.  :-)

Among the user-visible changes (choices) g77 makes in its
version of libf2c:

-  f2c.h configured to default to padding unformatted direct reads
   (#define Pad_UDread), because that's the behavior most users
   expect.

-  f2c.h configured to default to outputting leading zeros before
   decimal points in formatted and list-directed output, to be compatible
   with many other compilers (#define WANT_LEAD_0).  Either way is
   standard-conforming, however, and you should try to avoid writing
   code that assumes one format or another.

-  dtime_() and etime_() are from Dave Love's libU77, not from
   netlib's libF77.