gcc/libf2c/f2c.h
Craig Burley f30bc2e7f5 Makefile.in (install): Don't install if $(libsubdir) is empty...
Sat Jun 13 03:46:40 1998  Craig Burley  <burley@gnu.org>
	* Makefile.in (install): Don't install if $(libsubdir)
	is empty; issue a diagnostic saying top-level Makefile
	must pass it in instead, and exit.
	* Makefile.in (g2c.h): Rename from f2c.h.
	* Makefile.in, libF77/Makefile.in, libI77/Makefile.in,
	libU77/Makefile.in: Rewrite config and var assignment
	sections to be even more minimal than before, and to
	more clearly documented what macros are expected to be
	set and to what sorts of values.  Eliminate CROSS and
	related stuff, since there's no such things as CROSS
	in egcs.  Rename GCC_FOR_TARGET to CC throughout.
	* Makefile.in (stamp-libi77, stamp-libf77, stamp-libu77):
	Eliminate CROSS.
	* configure.in: Eliminate CROSS.
	Rename libf2c.a and f2c.h to libg2c.a and g2c.h,
	normalize and simplify g77/libg2c build process:
	* Makefile.in: Remove all stuff pertaining to
	installation, cleaning, and so on.  Parent Makefile
	does all that now.  Pass F2C_H_DIR,
	G2C_H_DIR, and GCC_H_DIR, the pathnames for the
	directories containing f2c.h, g2c.h, and other
	#include files, to subdirectory Makefiles.
	(stamp-libf77, stamp-libi77, stamp-libu77):
	Don't specify `-f Makefile' anymore, it's not needed
	now that subdirectory makefile's from netlib are
	renamed to makefile.netlib in g77 source (and to
	makefile.ori by configuration process, in case they're
	still around somehow).
	(stamp-libe77): Don't make libE77 dir unless it doesn't
	exist, if it does just delete all objects in it.
	Compile using $(GCC_FOR_TARGET), not $(CC).
	(rebuilt): Remove this and all subordinate targets,
	as parent Makefile now handles all that.
	(*clean): Remove.
	* configure.in (Pad_UDread, ALWAYS_FLUSH, WANT_LEAD_0):
	Remove these and commentary to new f2c.h file.
	AC_OUTPUT g2c.h instead of f2c.h.  Remove old commentary
	regarding concatenation.
	* g2c.h.in: Rename from f2c.h.in, add appropriate
	commentary.
	* f2c.h: New file, a wrapper for g2c.h that does
	libg2c-specific stuff.
	* libF77/Makefile.in, libI77/Makefile.in, libU77/Makefile.in:
	Change $(ALL_CFLAGS) to use F2C_H_DIR, G2C_H_DIR, and GCC_H_DIR
	macros.  Remove F2C_H macro, replace use with explicit
	dependencies on f2c.h and g2c.h.
	(*clean): Remove.

From-SVN: r20507
1998-06-15 07:52:05 +00:00

65 lines
2.7 KiB
C

/* f2c.h file for GNU Fortran run-time library
Copyright (C) 1998 Free Software Foundation, Inc.
Contributed by James Craig Burley (burley@gnu.org).
This file is part of GNU Fortran.
GNU Fortran is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Fortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Fortran; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This file currently is just a stub through which g77's copy
of netlib's libf2c, which g77 builds and installs as libg2c.a
(to avoid conflict), #include's g77's version of f2c.h, named
g2c.h. That file is, in turn, produced via g77's library
configuration process from g2c.h.in.
By going through this extra "hoop", it is easy to provide for
libg2c-specific configuration and typedefs that aren't appropriate
in g2c.h itself (since that is intended to be installed so it can
be shared with f2c users), without changing the libf2c (libg2c)
routines themselves. (They continue to #include "f2c.h", just
like they do in netlib's version.) */
#include "g2c.h"
/* For GNU Fortran (g77), we always enable the following behaviors for
libf2c, to make things easy on the programmer. The alternate
behaviors have their uses, and g77 might provide them as compiler,
rather than library, options, so only a single copy of a shared libf2c
need be built for a system. */
/* This makes unformatted I/O more consistent in relation to other
systems. It is not required by the F77 standard. */
#define Pad_UDread
/* This makes ERR= and IOSTAT= returns work properly in disk-full
situations, making things work more as expected. It slows things
down, so g77 will probably someday choose the original implementation
on a case-by-case basis when it can be shown to not be necessary
(e.g. no ERR= or IOSTAT=) or when it is given the appropriate
compile-time option or, perhaps, source-code directive.
(No longer defined, since it really slows down NFS access too much.) */
/* #define ALWAYS_FLUSH */
/* Most Fortran implementations do this, so to make it easier
to compare the output of g77-compiled programs to those compiled
by most other compilers, tell libf2c to put leading zeros in
appropriate places on output. */
#define WANT_LEAD_0