Import of libf2c from gcc3.3.2

1 files changed, 122 insertions, 0 deletions

diff --git a/gnu/lib/libf2c/libF77/configure.in b/gnu/lib/libf2c/libF77/configure.in
new file mode 100644
index 00000000000..ae34d36d908
--- /dev/null
+++ b/gnu/lib/libf2c/libF77/configure.in
@@ -0,0 +1,122 @@
+# Process this file with autoconf to produce a configure script.
+#   Copyright (C) 1995, 1997, 1998, 2001 Free Software Foundation, Inc.
+#   Contributed by Dave Love (d.love@dl.ac.uk).
+#
+#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.
+
+AC_PREREQ(2.12.1)
+AC_INIT(getarg_.c)
+
+dnl Checks for programs.
+
+dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may
+dnl not be able to.
+define([AC_PROG_CC_WORKS],[])
+
+# For g77 we'll set CC to point at the built gcc, but this will get it into
+# the makefiles
+AC_PROG_CC
+
+LIBTOOL='$(SHELL) ../libtool'
+AC_SUBST(LIBTOOL)
+
+test "$AR" || AR=ar
+AC_SUBST(AR)
+if test "$RANLIB"; then :
+  AC_SUBST(RANLIB)
+else
+  AC_PROG_RANLIB
+fi
+AC_PROG_MAKE_SET
+
+dnl Checks for libraries.
+
+dnl Checks for header files.
+# Sanity check for the cross-compilation case:
+AC_CHECK_HEADER(stdio.h,:,
+  [AC_MSG_ERROR([Can't find stdio.h.
+You must have a usable C system for the target already installed, at least
+including headers and, preferably, the library, before you can configure
+the G77 runtime system.  If necessary, install gcc now with \`LANGUAGES=c',
+then the target library, then build with \`LANGUAGES=f77'.])])
+
+AC_HEADER_STDC
+dnl We could do this if we didn't know we were using gcc
+dnl AC_MSG_CHECKING(for prototype-savvy compiler)
+dnl AC_CACHE_VAL(g77_cv_sys_proto,                
+dnl   [AC_TRY_LINK(,                             
+dnl dnl looks screwy because TRY_LINK expects a function body
+dnl    [return 0;} int foo (int * bar) {],       
+dnl    g77_cv_sys_proto=yes,                      
+dnl    [g77_cv_sys_proto=no                       
+dnl     AC_DEFINE(KR_headers)])])                
+dnl AC_MSG_RESULT($g77_cv_sys_proto)              
+
+AC_MSG_CHECKING(for posix)
+AC_CACHE_VAL(g77_cv_header_posix,
+  AC_EGREP_CPP(yes,
+  [#include <sys/types.h>
+#include <unistd.h>
+#ifdef _POSIX_VERSION
+  yes
+#endif
+], 
+  g77_cv_header_posix=yes,
+  g77_cv_header_posix=no))
+AC_MSG_RESULT($g77_cv_header_posix)
+
+# We can rely on the GNU library being posix-ish.  I guess checking the 
+# header isn't actually like checking the functions, though...
+AC_MSG_CHECKING(for GNU library)
+AC_CACHE_VAL(g77_cv_lib_gnu,
+  AC_EGREP_CPP(yes,
+    [#include <stdio.h>
+#ifdef __GNU_LIBRARY__
+  yes
+#endif
+], 
+  g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no))
+AC_MSG_RESULT($g77_cv_lib_gnu)
+
+dnl Checks for library functions.
+AC_TYPE_SIGNAL
+# we'll get atexit by default
+if test $ac_cv_header_stdc != yes; then
+AC_CHECK_FUNC(atexit,
+  AC_DEFINE(onexit,atexit),dnl just in case
+  [AC_DEFINE(NO_ONEXIT)
+  AC_CHECK_FUNC(onexit,,
+    [AC_CHECK_FUNC(on_exit,
+     AC_DEFINE(onexit,on_exit),)])])
+else true
+fi
+
+dnl perhaps should check also for remainder
+dnl Unfortunately, the message implies we're just checking for -lm...
+AC_CHECK_LIB(m,drem,AC_DEFINE(IEEE_drem))
+
+AC_DEFINE(Skip_f2c_Undefs)
+AC_DEFINE(IEEE_COMPLEX_DIVIDE)
+
+AC_OUTPUT(Makefile)
+
+dnl Local Variables:
+dnl comment-start: "dnl "
+dnl comment-end: ""
+dnl comment-start-skip: "\\bdnl\\b\\s *"
+dnl End: