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openmpi/config/opal_functions.m4
Brian Barrett 8231cb62a2 On OpenBSD (and probably others), expr operates on a 32 bit signed integer,
which is the same size as a Fortran or C integer.  This resulted in configure
coming up with Fortran's MAX_INT as -2^31, which obviously isn't a positive
number.  Since we found the MAX_INT using the same broken loop in a couple
places and doing it right is complicated, added a new macro that is much
more careful about sign roll-over.

During the Fortran rework between v1.6 and v1.7, the variable which
indicates whether or not Fortran is being compiled changed, so on platforms
without Fortran compilers, we were trying to determine the max value for
Fortran INTEGERS where we previously didn't.  I believe this is why
bug #3374 appeared as a regression.

Finally, since the OMPI code doesn't cope with OMPI_FORTRAN_HANDLE_MAX
being negative (which was the root cause of the segfault in $3374),
add a check at the end of the OMPI_FORTRAN_GET_HANDLE_MAX macro to
ensure that OMPI_FORTRAN_HANDLE_MAX is always non-negative.

This commit was SVN r27714.
2012-12-22 16:24:36 +00:00

511 строки
16 KiB
Bash

dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
dnl University Research and Technology
dnl Corporation. All rights reserved.
dnl Copyright (c) 2004-2005 The University of Tennessee and The University
dnl of Tennessee Research Foundation. All rights
dnl reserved.
dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
dnl University of Stuttgart. All rights reserved.
dnl Copyright (c) 2004-2005 The Regents of the University of California.
dnl All rights reserved.
dnl Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
dnl Copyright (c) 2009 Oak Ridge National Labs. All rights reserved.
dnl Copyright (c) 2009 Cisco Systems, Inc. All rights reserved.
dnl
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
dnl Portions of this file derived from GASNet v1.12 (see "GASNet"
dnl comments, below)
dnl Copyright 2004, Dan Bonachea <bonachea@cs.berkeley.edu>
dnl
dnl IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
dnl DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
dnl OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
dnl CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dnl
dnl THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
dnl INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
dnl AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
dnl ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
dnl PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
dnl
AC_DEFUN([OPAL_CONFIGURE_SETUP],[
# Some helper script functions. Unfortunately, we cannot use $1 kinds
# of arugments here because of the m4 substitution. So we have to set
# special variable names before invoking the function. :-\
ompi_show_title() {
cat <<EOF
============================================================================
== ${1}
============================================================================
EOF
}
ompi_show_subtitle() {
cat <<EOF
*** ${1}
EOF
}
ompi_show_subsubtitle() {
cat <<EOF
+++ ${1}
EOF
}
ompi_show_subsubsubtitle() {
cat <<EOF
--- ${1}
EOF
}
#
# Save some stats about this build
#
OPAL_CONFIGURE_USER="`whoami`"
OPAL_CONFIGURE_HOST="`hostname | head -n 1`"
OPAL_CONFIGURE_DATE="`date`"
#
# Save these details so that they can be used in ompi_info later
#
AC_SUBST(OPAL_CONFIGURE_USER)
AC_SUBST(OPAL_CONFIGURE_HOST)
AC_SUBST(OPAL_CONFIGURE_DATE)])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
AC_DEFUN([OPAL_BASIC_SETUP],[
#
# Save some stats about this build
#
OPAL_CONFIGURE_USER="`whoami`"
OPAL_CONFIGURE_HOST="`hostname | head -n 1`"
OPAL_CONFIGURE_DATE="`date`"
#
# Make automake clean emacs ~ files for "make clean"
#
CLEANFILES="*~ .\#*"
AC_SUBST(CLEANFILES)
#
# See if we can find an old installation of OMPI to overwrite
#
# Stupid autoconf 2.54 has a bug in AC_PREFIX_PROGRAM -- if ompi_clean
# is not found in the path and the user did not specify --prefix,
# we'll get a $prefix of "."
ompi_prefix_save="$prefix"
AC_PREFIX_PROGRAM(ompi_clean)
if test "$prefix" = "."; then
prefix="$ompi_prefix_save"
fi
unset ompi_prefix_save
#
# Basic sanity checking; we can't install to a relative path
#
case "$prefix" in
/*/bin)
prefix="`dirname $prefix`"
echo installing to directory \"$prefix\"
;;
/*)
echo installing to directory \"$prefix\"
;;
NONE)
echo installing to directory \"$ac_default_prefix\"
;;
@<:@a-zA-Z@:>@:*)
echo installing to directory \"$prefix\"
;;
*)
AC_MSG_ERROR(prefix "$prefix" must be an absolute directory path)
;;
esac
# Allow the --enable-dist flag to be passed in
AC_ARG_ENABLE(dist,
AC_HELP_STRING([--enable-dist],
[guarantee that that the "dist" make target will be functional, although may not guarantee that any other make target will be functional.]),
OPAL_WANT_DIST=yes, OPAL_WANT_DIST=no)
if test "$OPAL_WANT_DIST" = "yes"; then
AC_MSG_WARN([Configuring in 'make dist' mode])
AC_MSG_WARN([Most make targets may be non-functional!])
fi
# BEGIN: Derived from GASNet
# Suggestion from Paul Hargrove to disable --program-prefix and
# friends. Heavily influenced by GASNet 1.12 acinclude.m4
# functionality to do the same thing (copyright listed at top of this
# file).
# echo program_prefix=$program_prefix program_suffix=$program_suffix program_transform_name=$program_transform_name
# undo prefix autoconf automatically adds during cross-compilation
if test "$cross_compiling" = yes && test "$program_prefix" = "${target_alias}-" ; then
program_prefix=NONE
fi
# normalize empty prefix/suffix
if test -z "$program_prefix" ; then
program_prefix=NONE
fi
if test -z "$program_suffix" ; then
program_suffix=NONE
fi
# undo transforms caused by empty prefix/suffix
if expr "$program_transform_name" : 's.^..$' >/dev/null || \
expr "$program_transform_name" : 's.$$..$' >/dev/null || \
expr "$program_transform_name" : 's.$$..;s.^..$' >/dev/null ; then
program_transform_name="s,x,x,"
fi
if test "$program_prefix$program_suffix$program_transform_name" != "NONENONEs,x,x," ; then
AC_MSG_WARN([*** The Open MPI configure script does not support --program-prefix, --program-suffix or --program-transform-name. Users are recommended to instead use --prefix with a unique directory and make symbolic links as desired for renaming.])
AC_MSG_ERROR([*** Cannot continue])
fi
# END: Derived from GASNet
])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
AC_DEFUN([OPAL_LOG_MSG],[
# 1 is the message
# 2 is whether to put a prefix or not
if test -n "$2"; then
echo "configure:__oline__: $1" >&5
else
echo $1 >&5
fi])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
AC_DEFUN([OPAL_LOG_FILE],[
# 1 is the filename
if test -n "$1" -a -f "$1"; then
cat $1 >&5
fi])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
AC_DEFUN([OPAL_LOG_COMMAND],[
# 1 is the command
# 2 is actions to do if success
# 3 is actions to do if fail
echo "configure:__oline__: $1" >&5
$1 1>&5 2>&1
ompi_status=$?
OPAL_LOG_MSG([\$? = $ompi_status], 1)
if test "$ompi_status" = "0"; then
unset ompi_status
$2
else
unset ompi_status
$3
fi])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
AC_DEFUN([OPAL_UNIQ],[
# 1 is the variable name to be uniq-ized
ompi_name=$1
# Go through each item in the variable and only keep the unique ones
ompi_count=0
for val in ${$1}; do
ompi_done=0
ompi_i=1
ompi_found=0
# Loop over every token we've seen so far
ompi_done="`expr $ompi_i \> $ompi_count`"
while test "$ompi_found" = "0" -a "$ompi_done" = "0"; do
# Have we seen this token already? Prefix the comparison with
# "x" so that "-Lfoo" values won't be cause an error.
ompi_eval="expr x$val = x\$ompi_array_$ompi_i"
ompi_found=`eval $ompi_eval`
# Check the ending condition
ompi_done="`expr $ompi_i \>= $ompi_count`"
# Increment the counter
ompi_i="`expr $ompi_i + 1`"
done
# Check for special cases where we do want to allow repeated
# arguments (per
# http://www.open-mpi.org/community/lists/devel/2012/08/11362.php).
case $val in
-Xclang)
ompi_found=0
ompi_i=`expr $ompi_count + 1`
;;
esac
# If we didn't find the token, add it to the "array"
if test "$ompi_found" = "0"; then
ompi_eval="ompi_array_$ompi_i=$val"
eval $ompi_eval
ompi_count="`expr $ompi_count + 1`"
else
ompi_i="`expr $ompi_i - 1`"
fi
done
# Take all the items in the "array" and assemble them back into a
# single variable
ompi_i=1
ompi_done="`expr $ompi_i \> $ompi_count`"
ompi_newval=
while test "$ompi_done" = "0"; do
ompi_eval="ompi_newval=\"$ompi_newval \$ompi_array_$ompi_i\""
eval $ompi_eval
ompi_eval="unset ompi_array_$ompi_i"
eval $ompi_eval
ompi_done="`expr $ompi_i \>= $ompi_count`"
ompi_i="`expr $ompi_i + 1`"
done
# Done; do the assignment
ompi_newval="`echo $ompi_newval`"
ompi_eval="$ompi_name=\"$ompi_newval\""
eval $ompi_eval
# Clean up
unset ompi_name ompi_i ompi_done ompi_newval ompi_eval ompi_count])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
# Macro that serves as an alternative to using `which <prog>`. It is
# preferable to simply using `which <prog>` because backticks (`) (aka
# backquotes) invoke a sub-shell which may source a "noisy"
# ~/.whatever file (and we do not want the error messages to be part
# of the assignment in foo=`which <prog>`). This macro ensures that we
# get a sane executable value.
AC_DEFUN([OPAL_WHICH],[
# 1 is the variable name to do "which" on
# 2 is the variable name to assign the return value to
OPAL_VAR_SCOPE_PUSH([ompi_prog ompi_file ompi_dir ompi_sentinel])
ompi_prog=$1
IFS_SAVE=$IFS
IFS="$PATH_SEPARATOR"
for ompi_dir in $PATH; do
if test -x "$ompi_dir/$ompi_prog"; then
$2="$ompi_dir/$ompi_prog"
break
fi
done
IFS=$IFS_SAVE
OPAL_VAR_SCOPE_POP
])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
# Declare some variables; use OMPI_VAR_SCOPE_END to ensure that they
# are cleaned up / undefined.
AC_DEFUN([OPAL_VAR_SCOPE_PUSH],[
# Is the private index set? If not, set it.
if test "x$ompi_scope_index" = "x"; then
ompi_scope_index=1
fi
# First, check to see if any of these variables are already set.
# This is a simple sanity check to ensure we're not already
# overwriting pre-existing variables (that have a non-empty
# value). It's not a perfect check, but at least it's something.
for ompi_var in $1; do
ompi_str="ompi_str=\"\$$ompi_var\""
eval $ompi_str
if test "x$ompi_str" != "x"; then
AC_MSG_WARN([Found configure shell variable clash!])
AC_MSG_WARN([[OPAL_VAR_SCOPE_PUSH] called on "$ompi_var",])
AC_MSG_WARN([but it is already defined with value "$ompi_str"])
AC_MSG_WARN([This usually indicates an error in configure.])
AC_MSG_ERROR([Cannot continue])
fi
done
# Ok, we passed the simple sanity check. Save all these names so
# that we can unset them at the end of the scope.
ompi_str="ompi_scope_$ompi_scope_index=\"$1\""
eval $ompi_str
unset ompi_str
env | grep ompi_scope
ompi_scope_index=`expr $ompi_scope_index + 1`
])dnl
# Unset a bunch of variables that were previously set
AC_DEFUN([OPAL_VAR_SCOPE_POP],[
# Unwind the index
ompi_scope_index=`expr $ompi_scope_index - 1`
ompi_scope_test=`expr $ompi_scope_index \> 0`
if test "$ompi_scope_test" = "0"; then
AC_MSG_WARN([[OPAL_VAR_SCOPE_POP] popped too many OMPI configure scopes.])
AC_MSG_WARN([This usually indicates an error in configure.])
AC_MSG_ERROR([Cannot continue])
fi
# Get the variable names from that index
ompi_str="ompi_str=\"\$ompi_scope_$ompi_scope_index\""
eval $ompi_str
# Iterate over all the variables and unset them all
for ompi_var in $ompi_str; do
unset $ompi_var
done
])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
#
# OPAL_WITH_OPTION_MIN_MAX_VALUE(NAME,DEFAULT_VALUE,LOWER_BOUND,UPPER_BOUND)
# Defines a variable OPAL_MAX_xxx, with "xxx" being specified as parameter $1 as "variable_name".
# If not set at configure-time using --with-max-xxx, the default-value ($2) is assumed.
# If set, value is checked against lower (value >= $3) and upper bound (value <= $4)
#
AC_DEFUN([OPAL_WITH_OPTION_MIN_MAX_VALUE], [
max_value=[$2]
AC_MSG_CHECKING([maximum length of ]m4_translit($1, [_], [ ]))
AC_ARG_WITH([max-]m4_translit($1, [_], [-]),
AC_HELP_STRING([--with-max-]m4_translit($1, [_], [-])[=VALUE],
[maximum length of ]m4_translit($1, [_], [ ])[s. VALUE argument has to be specified (default: [$2]).]))
if test ! -z "$with_max_[$1]" -a "$with_max_[$1]" != "no" ; then
# Ensure it's a number (hopefully an integer!), and >0
expr $with_max_[$1] + 1 > /dev/null 2> /dev/null
AS_IF([test "$?" != "0"], [happy=0],
[AS_IF([test $with_max_[$1] -ge $3 -a $with_max_[$1] -le $4],
[happy=1], [happy=0])])
# If badness in the above tests, bail
AS_IF([test "$happy" = "0"],
[AC_MSG_RESULT([bad value ($with_max_[$1])])
AC_MSG_WARN([--with-max-]m4_translit($1, [_], [-])[s value must be >= $3 and <= $4])
AC_MSG_ERROR([Cannot continue])])
max_value=$with_max_[$1]
fi
AC_MSG_RESULT([$max_value])
AC_DEFINE_UNQUOTED([OPAL_MAX_]m4_toupper($1), $max_value,
[Maximum length of ]m4_translit($1, [_], [ ])[s (default is $2)])
[OPAL_MAX_]m4_toupper($1)=$max_value
AC_SUBST([OPAL_MAX_]m4_toupper($1))
])dnl
dnl #######################################################################
dnl #######################################################################
dnl #######################################################################
# Usage: OPAL_COMPUTE_MAX_VALUE(number_bytes, variable_to_set, action if overflow)
# Compute maximum value of datatype of
# number_bytes, setting the result in the second argument. Assumes a
# signed datatype.
AC_DEFUN([OPAL_COMPUTE_MAX_VALUE], [
# This is more complicated than it really should be. But some
# expr implementations (OpenBSD) have an expr with a max value of
# 2^31 - 1, and we sometimes want to compute the max value of a
# type as big or bigger than that...
ompi_num_bits=`expr $1 \* 8 - 1`
newval=1
value=1
overflow=0
while test $ompi_num_bits -ne 0 ; do
newval=`expr $value \* 2`
if test 0 -eq `expr $newval \< 0` ; then
# if the new value is not negative, next iteration...
value=$newval
ompi_num_bits=`expr $ompi_num_bits - 1`
# if this was the last iteration, subtract 1 (as signed
# max positive is 2^num_bits - 1). Do this here instead
# of outside of the while loop because we might have
# already subtracted 1 by then if we're trying to find the
# max value of the same datatype expr uses as it's
# internal representation (ie, if we hit the else
# below...)
if test 0 -eq $ompi_num_bits ; then
value=`expr $value - 1`
fi
else
# if the new value is negative, we've over flowed. First,
# try adding value - 1 instead of value (see if we can get
# to positive max of expr)
newval=`expr $value - 1 + $value`
if test 0 -eq `expr $newval \< 0` ; then
value=$newval
# Still positive, this is as high as we can go. If
# ompi_num_bits is 1, we didn't actually overflow.
# Otherwise, we overflowed.
if test 1 -ne $ompi_num_bits ; then
overflow=1
fi
else
# stil negative. Time to give up.
overflow=1
fi
ompi_num_bits=0
fi
done
AS_VAR_SET([$2], [$value])
AS_IF([test $overflow -ne 0], [$3])
])dnl