acinclude.m4 (LIBGFOR_CHECK_FPSETMASK): New check.

* acinclude.m4 (LIBGFOR_CHECK_FPSETMASK): New check.
	* configure.ac: Check for floatingpoint.h, fptrap.h and float.h
	headers. Use LIBGFOR_CHECK_FPSETMASK. Check for fp_trap and
	fp_enable functions.
	* configure.host: Add case for systems with fpsetmask and systems
	with fp_trap/fp_enable.
	* config/fpu-sysv.h: New file, FPU code using fpsetmask.
	* config/fpu-aix.h: New file, FPU code for AIX using fp_trap and
	fp_enable.
	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* config.h.in: Regenerate.

From-SVN: r105956
This commit is contained in:
François-Xavier Coudert 2005-10-28 20:13:20 +00:00
parent 9b46f94ffa
commit 3b14f6649a
8 changed files with 706 additions and 19 deletions

View File

@ -1,21 +1,36 @@
2005-10-20 Francois-Xavier Coudert <coudert@clipper.ens.fr>
* acinclude.m4 (LIBGFOR_CHECK_FPSETMASK): New check.
* configure.ac: Check for floatingpoint.h, fptrap.h and float.h
headers. Use LIBGFOR_CHECK_FPSETMASK. Check for fp_trap and
fp_enable functions.
* configure.host: Add case for systems with fpsetmask and systems
with fp_trap/fp_enable.
* config/fpu-sysv.h: New file, FPU code using fpsetmask.
* config/fpu-aix.h: New file, FPU code for AIX using fp_trap and
fp_enable.
* aclocal.m4: Regenerate.
* configure: Regenerate.
* config.h.in: Regenerate.
2005-10-24 Jerry DeLisle <jvdelisle@verizon.net>
PR libgfortran/24224
* libgfortran.h: Remove array stride error code.
* runtime/error.c: Remove array stride error.
* io/io.h: Change name of 'nml_loop_spec' to 'array_loop_spec' to be
generic. Add pointer to array_loop_spec and rank to gfc_unit
structure.
* io/list_read.c: Revise nml_loop_spec references to array_loop_spec.
* io/transfer.c (init_loop_spec): New function to initialize
an array_loop_spec.
(next_array_record): New function to return the index to the next array
record by incrementing through the array_loop_spec.
(next_record_r): Use new function.
(next_record_w): Use new function.
(finalize_transfer): Free memory allocated for array_loop_spec.
* io/unit.c (get_array_unit_len): Delete this function. Use new
function init_loop_spec to initialize the array_loop_spec.
PR libgfortran/24224
* libgfortran.h: Remove array stride error code.
* runtime/error.c: Remove array stride error.
* io/io.h: Change name of 'nml_loop_spec' to 'array_loop_spec' to be
generic. Add pointer to array_loop_spec and rank to gfc_unit
structure.
* io/list_read.c: Revise nml_loop_spec references to array_loop_spec.
* io/transfer.c (init_loop_spec): New function to initialize
an array_loop_spec.
(next_array_record): New function to return the index to the next array
record by incrementing through the array_loop_spec.
(next_record_r): Use new function.
(next_record_w): Use new function.
(finalize_transfer): Free memory allocated for array_loop_spec.
* io/unit.c (get_array_unit_len): Delete this function. Use new
function init_loop_spec to initialize the array_loop_spec.
2005-10-24 Paul Thomas <pault@gcc.gnu.org>

View File

@ -384,3 +384,20 @@ esac])])
if test x"$have_working_stat" = xyes; then
AC_DEFINE(HAVE_WORKING_STAT, 1, [Define if target has a reliable stat.])
fi])
dnl Checks for fpsetmask function.
AC_DEFUN([LIBGFOR_CHECK_FPSETMASK], [
AC_CACHE_CHECK([whether fpsetmask is present], have_fpsetmask, [
AC_TRY_LINK([
#if HAVE_FLOATINGPOINT_H
# include <floatingpoint.h>
#endif /* HAVE_FLOATINGPOINT_H */
#if HAVE_IEEEFP_H
# include <ieeefp.h>
#endif /* HAVE_IEEEFP_H */],[fpsetmask(0);],
eval "have_fpsetmask=yes", eval "have_fpsetmask=no")
])
if test x"$have_fpsetmask" = xyes; then
AC_DEFINE(HAVE_FPSETMASK, 1, [Define if you have fpsetmask.])
fi
])

View File

@ -294,6 +294,12 @@
/* libm includes finite */
#undef HAVE_FINITE
/* Define to 1 if you have the <floatingpoint.h> header file. */
#undef HAVE_FLOATINGPOINT_H
/* Define to 1 if you have the <float.h> header file. */
#undef HAVE_FLOAT_H
/* libm includes floor */
#undef HAVE_FLOOR
@ -303,6 +309,18 @@
/* libm includes floorl */
#undef HAVE_FLOORL
/* Define if you have fpsetmask. */
#undef HAVE_FPSETMASK
/* Define to 1 if you have the <fptrap.h> header file. */
#undef HAVE_FPTRAP_H
/* fp_enable is present */
#undef HAVE_FP_ENABLE
/* fp_trap is present */
#undef HAVE_FP_TRAP
/* libm includes frexp */
#undef HAVE_FREXP

View File

@ -0,0 +1,92 @@
/* AIX FPU-related code.
Copyright 2005 Free Software Foundation, Inc.
Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
This file is part of the GNU Fortran 95 runtime library (libgfortran).
Libgfortran 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 of the License, or (at your option) any later version.
In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file. (The General Public License restrictions
do apply in other respects; for example, they cover modification of
the file, and distribution when not linked into a combine
executable.)
Libgfortran 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 libgfortran; see the file COPYING. If not,
write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* FPU-related code for AIX. */
#ifdef HAVE_FPTRAP_H
#include <fptrap.h>
#endif
#ifdef HAVE_FLOAT_H
#include <float.h>
#endif
void
set_fpu (void)
{
fptrap_t mode = 0;
if (options.fpe & GFC_FPE_INVALID)
#ifdef TRP_INVALID
mode |= TRP_INVALID;
#else
st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_DENORMAL)
st_printf ("Fortran runtime warning: IEEE 'denormal number' "
"exception not supported.\n");
if (options.fpe & GFC_FPE_ZERO)
#ifdef TRP_DIV_BY_ZERO
mode |= TRP_DIV_BY_ZERO;
#else
st_printf ("Fortran runtime warning: IEEE 'division by zero' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_OVERFLOW)
#ifdef TRP_OVERFLOW
mode |= TRP_OVERFLOW;
#else
st_printf ("Fortran runtime warning: IEEE 'overflow' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_UNDERFLOW)
#ifdef TRP_UNDERFLOW
mode |= TRP_UNDERFLOW;
#else
st_printf ("Fortran runtime warning: IEEE 'underflow' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_PRECISION)
#ifdef TRP_UNDERFLOW
mode |= TRP_UNDERFLOW;
#else
st_printf ("Fortran runtime warning: IEEE 'loss of precision' "
"exception not supported.\n");
#endif
fp_trap(FP_TRAP_SYNC);
fp_enable(mode);
}

View File

@ -0,0 +1,91 @@
/* SysV FPU-related code (for systems not otherwise supported).
Copyright 2005 Free Software Foundation, Inc.
Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
This file is part of the GNU Fortran 95 runtime library (libgfortran).
Libgfortran 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 of the License, or (at your option) any later version.
In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file. (The General Public License restrictions
do apply in other respects; for example, they cover modification of
the file, and distribution when not linked into a combine
executable.)
Libgfortran 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 libgfortran; see the file COPYING. If not,
write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* FPU-related code for SysV platforms with fpsetmask(). */
#ifdef HAVE_IEEEFP_H
#include <ieeefp.h>
#endif
void
set_fpu (void)
{
int cw = 0;
if (options.fpe & GFC_FPE_INVALID)
#ifdef FP_X_INV
cw |= FP_X_INV;
#else
st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_DENORMAL)
#ifdef FP_X_DNML
cw |= FP_X_DNML;
#else
st_printf ("Fortran runtime warning: IEEE 'denormal number' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_ZERO)
#ifdef FP_X_DZ
cw |= FP_X_DZ;
#else
st_printf ("Fortran runtime warning: IEEE 'division by zero' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_OVERFLOW)
#ifdef FP_X_OFL
cw |= FP_X_OFL;
#else
st_printf ("Fortran runtime warning: IEEE 'overflow' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_UNDERFLOW)
#ifdef FP_X_UFL
cw |= FP_X_UFL;
#else
st_printf ("Fortran runtime warning: IEEE 'underflow' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_PRECISION)
#ifdef FP_X_IMP
cw |= FP_X_IMP;
#else
st_printf ("Fortran runtime warning: IEEE 'loss of precision' "
"exception not supported.\n");
#endif
fpsetmask(cw);
}

440
libgfortran/configure vendored
View File

@ -6508,7 +6508,159 @@ done
for ac_header in sys/mman.h sys/types.h sys/stat.h ieeefp.h fenv.h
for ac_header in sys/mman.h sys/types.h sys/stat.h floatingpoint.h ieeefp.h
do
as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
if eval "test \"\${$as_ac_Header+set}\" = set"; then
echo "$as_me:$LINENO: checking for $ac_header" >&5
echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
if eval "test \"\${$as_ac_Header+set}\" = set"; then
echo $ECHO_N "(cached) $ECHO_C" >&6
fi
echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
else
# Is the header compilable?
echo "$as_me:$LINENO: checking $ac_header usability" >&5
echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
$ac_includes_default
#include <$ac_header>
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest.$ac_objext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_header_compiler=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_header_compiler=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
echo "${ECHO_T}$ac_header_compiler" >&6
# Is the header present?
echo "$as_me:$LINENO: checking $ac_header presence" >&5
echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <$ac_header>
_ACEOF
if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
(eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } >/dev/null; then
if test -s conftest.err; then
ac_cpp_err=$ac_c_preproc_warn_flag
ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
else
ac_cpp_err=
fi
else
ac_cpp_err=yes
fi
if test -z "$ac_cpp_err"; then
ac_header_preproc=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_header_preproc=no
fi
rm -f conftest.err conftest.$ac_ext
echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
echo "${ECHO_T}$ac_header_preproc" >&6
# So? What about this header?
case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
yes:no: )
{ echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
{ echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
ac_header_preproc=yes
;;
no:yes:* )
{ echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
{ echo "$as_me:$LINENO: WARNING: $ac_header: check for missing prerequisite headers?" >&5
echo "$as_me: WARNING: $ac_header: check for missing prerequisite headers?" >&2;}
{ echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
{ echo "$as_me:$LINENO: WARNING: $ac_header: section \"Present But Cannot Be Compiled\"" >&5
echo "$as_me: WARNING: $ac_header: section \"Present But Cannot Be Compiled\"" >&2;}
{ echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
{ echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
(
cat <<\_ASBOX
## ------------------------------------------------------ ##
## Report this to the GNU Fortran Runtime Library lists. ##
## ------------------------------------------------------ ##
_ASBOX
) |
sed "s/^/$as_me: WARNING: /" >&2
;;
esac
echo "$as_me:$LINENO: checking for $ac_header" >&5
echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
if eval "test \"\${$as_ac_Header+set}\" = set"; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
eval "$as_ac_Header=\$ac_header_preproc"
fi
echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
fi
if test `eval echo '${'$as_ac_Header'}'` = yes; then
cat >>confdefs.h <<_ACEOF
#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
_ACEOF
fi
done
for ac_header in fenv.h fptrap.h float.h
do
as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
if eval "test \"\${$as_ac_Header+set}\" = set"; then
@ -19587,6 +19739,292 @@ _ACEOF
fi
# Check for SysV fpsetmask
echo "$as_me:$LINENO: checking whether fpsetmask is present" >&5
echo $ECHO_N "checking whether fpsetmask is present... $ECHO_C" >&6
if test "${have_fpsetmask+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#if HAVE_FLOATINGPOINT_H
# include <floatingpoint.h>
#endif /* HAVE_FLOATINGPOINT_H */
#if HAVE_IEEEFP_H
# include <ieeefp.h>
#endif /* HAVE_IEEEFP_H */
int
main ()
{
fpsetmask(0);
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
eval "have_fpsetmask=yes"
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
eval "have_fpsetmask=no"
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $have_fpsetmask" >&5
echo "${ECHO_T}$have_fpsetmask" >&6
if test x"$have_fpsetmask" = xyes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_FPSETMASK 1
_ACEOF
fi
# Check for AIX fp_trap and fp_enable
echo "$as_me:$LINENO: checking for fp_trap" >&5
echo $ECHO_N "checking for fp_trap... $ECHO_C" >&6
if test "${ac_cv_func_fp_trap+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
/* Define fp_trap to an innocuous variant, in case <limits.h> declares fp_trap.
For example, HP-UX 11i <limits.h> declares gettimeofday. */
#define fp_trap innocuous_fp_trap
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char fp_trap (); below.
Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
<limits.h> exists even on freestanding compilers. */
#ifdef __STDC__
# include <limits.h>
#else
# include <assert.h>
#endif
#undef fp_trap
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern "C"
{
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char fp_trap ();
/* The GNU C library defines this for functions which it implements
to always fail with ENOSYS. Some functions are actually named
something starting with __ and the normal name is an alias. */
#if defined (__stub_fp_trap) || defined (__stub___fp_trap)
choke me
#else
char (*f) () = fp_trap;
#endif
#ifdef __cplusplus
}
#endif
int
main ()
{
return f != fp_trap;
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_func_fp_trap=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_func_fp_trap=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ac_cv_func_fp_trap" >&5
echo "${ECHO_T}$ac_cv_func_fp_trap" >&6
if test $ac_cv_func_fp_trap = yes; then
have_fp_trap=yes
cat >>confdefs.h <<\_ACEOF
#define HAVE_FP_TRAP 1
_ACEOF
fi
echo "$as_me:$LINENO: checking for fp_enable" >&5
echo $ECHO_N "checking for fp_enable... $ECHO_C" >&6
if test "${ac_cv_func_fp_enable+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
/* Define fp_enable to an innocuous variant, in case <limits.h> declares fp_enable.
For example, HP-UX 11i <limits.h> declares gettimeofday. */
#define fp_enable innocuous_fp_enable
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char fp_enable (); below.
Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
<limits.h> exists even on freestanding compilers. */
#ifdef __STDC__
# include <limits.h>
#else
# include <assert.h>
#endif
#undef fp_enable
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern "C"
{
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char fp_enable ();
/* The GNU C library defines this for functions which it implements
to always fail with ENOSYS. Some functions are actually named
something starting with __ and the normal name is an alias. */
#if defined (__stub_fp_enable) || defined (__stub___fp_enable)
choke me
#else
char (*f) () = fp_enable;
#endif
#ifdef __cplusplus
}
#endif
int
main ()
{
return f != fp_enable;
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_func_fp_enable=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_func_fp_enable=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ac_cv_func_fp_enable" >&5
echo "${ECHO_T}$ac_cv_func_fp_enable" >&6
if test $ac_cv_func_fp_enable = yes; then
have_fp_enable=yes
cat >>confdefs.h <<\_ACEOF
#define HAVE_FP_ENABLE 1
_ACEOF
fi
# Runs configure.host to set up necessary host-dependent shell variables.
# We then display a message about it, and propagate them through the
# build chain.

View File

@ -158,7 +158,8 @@ AC_TYPE_OFF_T
AC_STDC_HEADERS
AC_HAVE_HEADERS(stdlib.h stdio.h string.h stddef.h math.h unistd.h signal.h)
AC_CHECK_HEADERS(time.h sys/params.h sys/time.h sys/times.h sys/resource.h)
AC_CHECK_HEADERS(sys/mman.h sys/types.h sys/stat.h ieeefp.h fenv.h)
AC_CHECK_HEADERS(sys/mman.h sys/types.h sys/stat.h floatingpoint.h ieeefp.h)
AC_CHECK_HEADERS(fenv.h fptrap.h float.h)
AC_CHECK_HEADER([complex.h],[AC_DEFINE([HAVE_COMPLEX_H], [1], [complex.h exists])])
AC_CHECK_MEMBERS([struct stat.st_blksize])
@ -346,6 +347,13 @@ AC_CHECK_LIB([m],[finite],[AC_DEFINE([HAVE_FINITE],[1],[libm includes finite])])
# Check for GNU libc feenableexcept
AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
# Check for SysV fpsetmask
LIBGFOR_CHECK_FPSETMASK
# Check for AIX fp_trap and fp_enable
AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
# Runs configure.host to set up necessary host-dependent shell variables.
# We then display a message about it, and propagate them through the
# build chain.

View File

@ -18,7 +18,7 @@
# DEFAULTS
fpu_host=fpu-generic
fpu_host='fpu-generic'
# HOST-SPECIFIC OVERRIDES
case "${host_cpu}" in
@ -30,3 +30,11 @@ esac
if test "x${have_feenableexcept}" = "xyes"; then
fpu_host='fpu-glibc'
fi
if test "x${have_fpsetmask}" = "xyes"; then
fpu_host='fpu-sysv'
fi
if test "x${have_fp_enable}" = "xyes" && test "x${have_fp_trap}" = "xyes"; then
fpu_host='fpu-aix'
fi