ports/openmpi
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openmpi/config/ompi_config_pthreads.m4
Brian Barrett 0b09ba928c Fix for bug #17. Solaris provides stubs (who knows why, but they do) for 
the pthreads library that don't do anything but are there when no special
options are given.  Both the GNU compiler and the Sun compiler could
sometimes ignore the -K* options, causing badness when building with
posix threads.  Don't try those options ;).

We still try -pthread and -pthreads because the compilers *do* error
when they see those options and some versions of the GNU compiler do
understand those flags (and do all the right things in that case).

This commit was SVN r10126.
2006-05-31 00:23:49 +00:00

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Исходник Ответственный История

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 $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
dnl OMPI_CONFIG_POSIX_THREADS()
dnl
dnl Configure posix threads, setting the following variables (but
dnl not calling AC_SUBST on them).
# ********************************************************************
#
# Internal macros - do not call from outside OMPI_CONFIG_POSIX_THREADS
#
# ********************************************************************
AC_DEFUN([OMPI_INTL_PTHREAD_TRY_LINK], [
# BEGIN: OMPI_INTL_PTHREAD_TRY_LINK
#
# Make sure that we can run a small application in C or C++, which
# ever is the current language. Do make sure that C or C++ is the
# current language.
#
# As long as this is not being run....
# pthread_t may be anything from an int to a struct -- init with self-tid.
#
AC_TRY_LINK([#include <pthread.h>],
[pthread_t th=pthread_self(); pthread_join(th, 0);
pthread_attr_init(0); pthread_cleanup_push(0, 0);
pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
[$1], [$2])
# END: OMPI_INTL_PTHREAD_TRY_LINK
])dnl
AC_DEFUN([OMPI_INTL_PTHREAD_TRY_LINK_F77], [
# BEGIN: OMPI_INTL_PTHREAD_TRY_LINK_F77
#
# Make sure that we can run a small application in Fortran, with
# pthreads living in a C object file
OMPI_F77_MAKE_C_FUNCTION([ompi_ac_thread_fn], [pthreadtest])
# Fortran module
cat > conftestf.f <<EOF
program fpthread
call pthreadtest
end
EOF
# C module
if test -f conftest.h; then
ompi_conftest_h="#include \"conftest.h\""
else
ompi_conftest_h=""
fi
cat > conftest.c <<EOF
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
$ompi_conftest_h
#ifdef __cplusplus
extern "C" {
#endif
void $ompi_ac_thread_fn()
{
pthread_t th;
pthread_create(&th, NULL, NULL, NULL);
pthread_join(th, 0);
pthread_attr_init(0);
pthread_cleanup_push(0, 0);
pthread_create(0,0,0,0);
pthread_cleanup_pop(0);
}
#ifdef __cplusplus
}
#endif
EOF
# Try the compile
OMPI_LOG_COMMAND(
[$CC $CFLAGS -I. -c conftest.c],
OMPI_LOG_COMMAND(
[$F77 $FFLAGS conftestf.f conftest.o -o conftest $LDFLAGS $LIBS],
[HAPPY=1],
[HAPPY=0]),
[HAPPY=0])
if test "$HAPPY" = "1"; then
$1
else
OMPI_LOG_MSG([here is the C program:], 1)
OMPI_LOG_FILE([conftest.c])
if test -f conftest.h; then
OMPI_LOG_MSG([here is contest.h:], 1)
OMPI_LOG_FILE([conftest.h])
fi
OMPI_LOG_MSG([here is the fortran program:], 1)
OMPI_LOG_FILE([conftestf.f])
$2
fi
unset HAPPY ompi_conftest_h
/bin/rm -f conftest*
# END: OMPI_INTL_PTHREAD_TRY_LINK_F77
])dnl
# ********************************************************************
#
# Try to compile thread support without any special flags
#
# ********************************************************************
AC_DEFUN([OMPI_INTL_POSIX_THREADS_PLAIN_C], [
#
# C compiler
#
if test "$ompi_pthread_c_success" = "0"; then
AC_MSG_CHECKING([if C compiler and POSIX threads work as is])
if test "$HAVE_POSIX_THREADS" = "1" ; then
run_this_test=1
else
case "${host_cpu}-${host_os}" in
*solaris*)
AC_MSG_RESULT([no - Solaris, not checked])
run_this_test=0
;;
*-aix* | *-freebsd*)
if test "`echo $CPPFLAGS | grep 'D_THREAD_SAFE'`" = ""; then
PTRHEAD_CPPFLAGS="-D_THREAD_SAFE"
CPPFLAGS="$CPPFLAGS $PTHREAD_CPPFLAGS"
fi
run_this_test=1
;;
*)
if test "`echo $CPPFLAGS | grep 'D_REENTRANT'`" = ""; then
PTHREAD_CPPFLAGS="-D_REENTRANT"
CPPFLAGS="$CPPFLAGS $PTHREAD_CPPFLAGS"
fi
run_this_test=1
;;
esac
fi
if test "$run_this_test" = "1" ; then
AC_LANG_PUSH(C)
OMPI_INTL_PTHREAD_TRY_LINK(ompi_pthread_c_success=1,
ompi_pthread_c_success=0)
AC_LANG_POP(C)
if test "$ompi_pthread_c_success" = "1"; then
AC_MSG_RESULT([yes])
else
PTHREAD_CPPFLAGS=
CPPFLAGS="$orig_CPPFLAGS"
AC_MSG_RESULT([no])
fi
fi
fi
])dnl
AC_DEFUN([OMPI_INTL_POSIX_THREADS_PLAIN_CXX], [
#
# C++ compiler
#
if test "$ompi_pthread_cxx_success" = "0"; then
AC_MSG_CHECKING([if C++ compiler and POSIX threads work as is])
if test "$HAVE_POSIX_THREADS" = "1" ; then
run_this_test=1
else
case "${host_cpu}-${host_os}" in
*solaris*)
AC_MSG_RESULT([no - Solaris, not checked])
run_this_test=0
;;
*-aix* | *-freebsd*)
if test "`echo $CXXCPPFLAGS | grep 'D_THREAD_SAFE'`" = ""; then
PTRHEAD_CXXCPPFLAGS="-D_THREAD_SAFE"
CXXCPPFLAGS="$CXXCPPFLAGS $PTHREAD_CXXCPPFLAGS"
fi
run_this_test=1
;;
*)
if test "`echo $CXXCPPFLAGS | grep 'D_REENTRANT'`" = ""; then
PTHREAD_CXXCPPFLAGS="-D_REENTRANT"
CXXCPPFLAGS="$CXXCPPFLAGS $PTHREAD_CXXCPPFLAGS"
fi
run_this_test=1
;;
esac
fi
if test "$run_this_test" = "1" ; then
AC_LANG_PUSH(C++)
OMPI_INTL_PTHREAD_TRY_LINK(ompi_pthread_cxx_success=1,
ompi_pthread_cxx_success=0)
AC_LANG_POP(C++)
if test "$ompi_pthread_cxx_success" = "1"; then
AC_MSG_RESULT([yes])
else
PTHREAD_CXXCPPFLAGS=
CXXCPPFLAGS="$orig_CXXCPPFLAGS"
AC_MSG_RESULT([no])
fi
fi
fi
])dnl
AC_DEFUN([OMPI_INTL_POSIX_THREADS_PLAIN_FC], [
#
# Fortran compiler
#
if test "$ompi_pthread_f77_success" = "0" -a "$OMPI_WANT_F77_BINDINGS" = "1"; then
AC_MSG_CHECKING([if F77 compiler and POSIX threads work as is])
if test "$HAVE_POSIX_THREADS" = "1" ; then
run_this_test=1
else
case "${host_cpu}-${host_os}" in
*solaris*)
AC_MSG_RESULT([no - Solaris, not checked])
run_this_test=0
;;
*)
run_this_test=1
;;
esac
fi
if test "$run_this_test" = "1" ; then
AC_LANG_PUSH(C)
OMPI_INTL_PTHREAD_TRY_LINK_F77(ompi_pthread_f77_success=1,
ompi_pthread_f77_success=0)
AC_LANG_POP(C)
if test "$ompi_pthread_f77_success" = "1"; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
fi
fi
])dnl
AC_DEFUN([OMPI_INTL_POSIX_THREADS_PLAIN], [
# BEGIN: OMPI_INTL_POSIX_THREADS_PLAIN
#
# Check if can compile without any special flags
# we throw -D_REENTRANT or -D_THREAD_SAFE in here, just in
# case. Some systems (OS X, for example) generally don't need
# the defines, but then will on one system header here or there
# why take chances?
#
# Only run C++ and Fortran if those compilers already configured
AC_PROVIDE_IFELSE([AC_PROG_CC],
[OMPI_INTL_POSIX_THREADS_PLAIN_C],
[ompi_pthread_c_success=1])
AC_PROVIDE_IFELSE([AC_PROG_CXX],
[OMPI_INTL_POSIX_THREADS_PLAIN_CXX],
[ompi_pthread_cxx_success=1])
AC_PROVIDE_IFELSE([AC_PROG_F77],
[OMPI_INTL_POSIX_THREADS_PLAIN_FC],
[ompi_pthread_f77_success=1])
# End: OMPI_INTL_POSIX_THREADS_PLAIN
])dnl
# ********************************************************************
#
# Try to compile thread support with special compiler flags
#
# ********************************************************************
AC_DEFUN([OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS_C], [
#
# C compiler
#
if test "$ompi_pthread_c_success" = "0"; then
for pf in $pflags; do
AC_MSG_CHECKING([if C compiler and POSIX threads work with $pf])
CFLAGS="$orig_CFLAGS $pf"
AC_LANG_PUSH(C)
OMPI_INTL_PTHREAD_TRY_LINK(ompi_pthread_c_success=1,
ompi_pthread_c_success=0)
AC_LANG_POP(C)
if test "$ompi_pthread_c_success" = "1"; then
PTHREAD_CFLAGS="$pf"
AC_MSG_RESULT([yes])
break
else
PTHREAD_CFLAGS=
CFLAGS="$orig_CFLAGS"
AC_MSG_RESULT([no])
fi
done
fi
])
AC_DEFUN([OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS_CXX], [
#
# C++ compiler
#
if test "$ompi_pthread_cxx_success" = "0"; then
for pf in $pflags; do
AC_MSG_CHECKING([if C++ compiler and POSIX threads work with $pf])
CXXFLAGS="$orig_CXXFLAGS $pf"
AC_LANG_PUSH(C++)
OMPI_INTL_PTHREAD_TRY_LINK(ompi_pthread_cxx_success=1,
ompi_pthread_cxx_success=0)
AC_LANG_POP(C++)
if test "$ompi_pthread_cxx_success" = "1"; then
PTHREAD_CXXFLAGS="$pf"
AC_MSG_RESULT([yes])
break
else
PTHREAD_CXXFLAGS=
CXXFLAGS="$orig_CXXFLAGS"
AC_MSG_RESULT([no])
fi
done
fi
])
AC_DEFUN([OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS_FC], [
#
# Fortran compiler
#
if test "$ompi_pthread_f77_success" = "0" -a "$OMPI_WANT_F77_BINDINGS" = "1"; then
for pf in $pflags; do
AC_MSG_CHECKING([if F77 compiler and POSIX threads work with $pf])
FFLAGS="$orig_FFLAGS $pf"
AC_LANG_PUSH(C)
OMPI_INTL_PTHREAD_TRY_LINK_F77(ompi_pthread_f77_success=1,
ompi_pthread_f77_success=0)
AC_LANG_POP(C)
if test "$ompi_pthread_f77_success" = "1"; then
PTHREAD_FFLAGS="$pf"
AC_MSG_RESULT([yes])
break
else
PTHREAD_FFLAGS=
FFLAGS="$orig_FFLAGS"
AC_MSG_RESULT([no])
fi
done
fi
])
AC_DEFUN([OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS],[
# Begin: OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS
#
# If above didn't work, try some super-special compiler flags
# that get evaluated to the "right" things.
#
# -Kthread:
# -kthread: FreeBSD kernel threads
# -pthread: Modern GCC (most all platforms)
# -pthreads: GCC on solaris
# -mthreads:
# -mt: Solaris native compilers / HP-UX aCC
#
# Put -mt before -mthreads because HP-UX aCC will properly compile
# with -mthreads (reading as -mt), but emit a warning about unknown
# flags hreads. Stupid compilers.
case "${host_cpu}-${host_os}" in
*solaris*)
pflags="-pthread -pthreads -mt"
;;
*)
pflags="-Kthread -kthread -pthread -pthreads -mt -mthreads"
;;
esac
# Only run C++ and Fortran if those compilers already configured
AC_PROVIDE_IFELSE([AC_PROG_CC],
[OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS_C],
[ompi_pthread_c_success=1])
AC_PROVIDE_IFELSE([AC_PROG_CXX],
[OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS_CXX],
[ompi_pthread_cxx_success=1])
AC_PROVIDE_IFELSE([AC_PROG_F77],
[OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS_FC],
[ompi_pthread_f77_success=1])
# End: OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS
])dnl
# ********************************************************************
#
# Try to compile thread support with extra libs
#
# ********************************************************************
AC_DEFUN([OMPI_INTL_POSIX_THREADS_LIBS_C],[
#
# C compiler
#
if test "$ompi_pthread_c_success" = "0"; then
for pl in $plibs; do
AC_MSG_CHECKING([if C compiler and POSIX threads work with $pl])
case "${host_cpu}-${host-_os}" in
*-aix* | *-freebsd*)
if test "`echo $CPPFLAGS | grep 'D_THREAD_SAFE'`" = ""; then
PTRHEAD_CPPFLAGS="-D_THREAD_SAFE"
CPPFLAGS="$CPPFLAGS $PTHREAD_CPPFLAGS"
fi
;;
*)
if test "`echo $CPPFLAGS | grep 'D_REENTRANT'`" = ""; then
PTHREAD_CPPFLAGS="-D_REENTRANT"
CPPFLAGS="$CPPFLAGS $PTHREAD_CPPFLAGS"
fi
;;
esac
LIBS="$orig_LIBS $pl"
AC_LANG_PUSH(C)
OMPI_INTL_PTHREAD_TRY_LINK(ompi_pthread_c_success=1,
ompi_pthread_c_success=0)
AC_LANG_POP(C)
if test "$ompi_pthread_c_success" = "1"; then
PTHREAD_LIBS="$pl"
AC_MSG_RESULT([yes])
else
PTHREAD_CPPFLAGS=
CPPFLAGS="$orig_CPPFLAGS"
LIBS="$orig_LIBS"
AC_MSG_RESULT([no])
fi
done
fi
])dnl
AC_DEFUN([OMPI_INTL_POSIX_THREADS_LIBS_CXX],[
#
# C++ compiler
#
if test "$ompi_pthread_cxx_success" = "0"; then
if test ! "$ompi_pthread_c_success" = "0" -a ! "$PTHREAD_LIBS" = "" ; then
AC_MSG_CHECKING([if C++ compiler and POSIX threads work with $PTHREAD_LIBS])
case "${host_cpu}-${host-_os}" in
*-aix* | *-freebsd*)
if test "`echo $CXXCPPFLAGS | grep 'D_THREAD_SAFE'`" = ""; then
PTRHEAD_CXXCPPFLAGS="-D_THREAD_SAFE"
CXXCPPFLAGS="$CXXCPPFLAGS $PTHREAD_CXXCPPFLAGS"
fi
;;
*)
if test "`echo $CXXCPPFLAGS | grep 'D_REENTRANT'`" = ""; then
PTHREAD_CXXCPPFLAGS="-D_REENTRANT"
CXXCPPFLAGS="$CXXCPPFLAGS $PTHREAD_CXXCPPFLAGS"
fi
;;
esac
LIBS="$orig_LIBS $PTHREAD_LIBS"
AC_LANG_PUSH(C++)
OMPI_INTL_PTHREAD_TRY_LINK(ompi_pthread_cxx_success=1,
ompi_pthread_cxx_success=0)
AC_LANG_POP(C++)
if test "$ompi_pthread_cxx_success" = "1"; then
PTHREAD_LIBS="$pl"
AC_MSG_RESULT([yes])
else
CXXCPPFLAGS="$orig_CXXCPPFLAGS"
AC_MSG_RESULT([no])
AC_MSG_ERROR([Can not find working threads configuration. aborting])
fi
else
for pl in $plibs; do
AC_MSG_CHECKING([if C++ compiler and POSIX threads work with $pl])
case "${host_cpu}-${host-_os}" in
*-aix* | *-freebsd*)
if test "`echo $CXXCPPFLAGS | grep 'D_THREAD_SAFE'`" = ""; then
PTRHEAD_CXXCPPFLAGS="-D_THREAD_SAFE"
CXXCPPFLAGS="$CXXCPPFLAGS $PTHREAD_CXXCPPFLAGS"
fi
;;
*)
if test "`echo $CXXCPPFLAGS | grep 'D_REENTRANT'`" = ""; then
PTHREAD_CXXCPPFLAGS="-D_REENTRANT"
CXXCPPFLAGS="$CXXCPPFLAGS $PTHREAD_CXXCPPFLAGS"
fi
;;
esac
LIBS="$orig_LIBS $pl"
AC_LANG_PUSH(C++)
OMPI_INTL_PTHREAD_TRY_LINK(ompi_pthread_cxx_success=1,
ompi_pthread_cxx_success=0)
AC_LANG_POP(C++)
if test "$ompi_pthread_cxx_success" = "1"; then
PTHREAD_LIBS="$pl"
AC_MSG_RESULT([yes])
else
PTHREAD_CXXCPPFLAGS=
CXXCPPFLAGS="$orig_CXXCPPFLAGS"
AC_MSG_RESULT([no])
fi
done
fi
fi
])dnl
AC_DEFUN([OMPI_INTL_POSIX_THREADS_LIBS_FC],[
#
# Fortran compiler
#
if test "$ompi_pthread_f77_success" = "0" -a "$OMPI_WANT_F77_BINDINGS" = "1"; then
if test ! "$ompi_pthread_c_success" = "0" -a ! "$PTHREAD_LIBS" = "" ; then
AC_MSG_CHECKING([if F77 compiler and POSIX threads work with $PTHREAD_LIBS])
LIBS="$orig_LIBS $PTHREAD_LIBS"
AC_LANG_PUSH(C)
OMPI_INTL_PTHREAD_TRY_LINK_F77(ompi_pthread_f77_success=1,
ompi_pthread_f77_success=0)
AC_LANG_POP(C)
LIBS="$orig_LIBS"
if test "$ompi_pthread_f77_success" = "1"; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
AC_MSG_ERROR([Can not find working threads configuration. aborting])
fi
else
for pl in $plibs; do
AC_MSG_CHECKING([if F77 compiler and POSIX threads work with $pl])
LIBS="$orig_LIBS $pl"
AC_LANG_PUSH(C)
OMPI_INTL_PTHREAD_TRY_LINK_F77(ompi_pthread_f77_success=1,
ompi_pthread_f77_success=0)
AC_LANG_POP(C)
LIBS="$orig_LIBS"
if test "$ompi_pthread_f77_success" = "1"; then
PTHREAD_LIBS="$pl"
AC_MSG_RESULT([yes])
break
else
AC_MSG_RESULT([no])
fi
done
fi
fi
])dnl
AC_DEFUN([OMPI_INTL_POSIX_THREADS_LIBS],[
# Begin: OMPI_INTL_POSIX_THREADS_LIBS
#
# if we can't find a super-special compiler flags, try some libraries.
# we throw -D_REENTRANT or -D_THREAD_SAFE in here, just in case. Some
# systems (OS X, for example) generally don't need the defines, but
# then will on one system header here or there why take chances?
#
# libpthreads: AIX - must check before libpthread
# liblthread: LinuxThreads on FreeBSD
# libpthread: The usual place (like we can define usual!)
plibs="-lpthreads -llthread -lpthread"
# Only run C++ and Fortran if those compilers already configured
AC_PROVIDE_IFELSE([AC_PROG_CC],
[OMPI_INTL_POSIX_THREADS_LIBS_C],
[ompi_pthread_c_success=1])
AC_PROVIDE_IFELSE([AC_PROG_CXX],
[OMPI_INTL_POSIX_THREADS_LIBS_CXX],
[ompi_pthread_cxx_success=1])
AC_PROVIDE_IFELSE([AC_PROG_F77],
[OMPI_INTL_POSIX_THREADS_LIBS_FC],
[ompi_pthread_f77_success=1])
# End: OMPI_INTL_POSIX_THREADS_LIBS]
)dnl
#********************************************************************
#
# External macro (aka, the real thing)
#
#********************************************************************
AC_DEFUN([OMPI_CONFIG_POSIX_THREADS],[
ompi_pthread_c_success=0
ompi_pthread_f77_success=0
ompi_pthread_cxx_success=0
orig_CFLAGS="$CFLAGS"
orig_FFLAGS="$FFLAGS"
orig_CXXFLAGS="$CXXFLAGS"
orig_CPPFLAGS="$CPPFLAGS"
orig_CXXCPPFLAGS="$CXXCPPFLAGS"
orig_LDFLAGS="$LDFLAGS"
orig_LIBS="$LIBS"
PTRHEAD_CFLAGS=
PTHREAD_FFLAGS=
PTHREAD_CXXFLAGS=
PTHREAD_CPPFLAGS=
PTHREAD_CXXCPPFLAGS=
PTHREAD_LDFLAGS=
PTHREAD_LIBS=
# Try with the basics, mam.
OMPI_INTL_POSIX_THREADS_PLAIN
# Try the super-special compiler flags.
OMPI_INTL_POSIX_THREADS_SPECIAL_FLAGS
# Try the normal linking methods (that's no fun)
OMPI_INTL_POSIX_THREADS_LIBS
#
# check to see if we can set error checking mutexes
#
# LinuxThreads
AC_MSG_CHECKING([for PTHREAD_MUTEX_ERRORCHECK_NP])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <pthread.h>]],
[[pthread_mutexattr_settype(NULL, PTHREAD_MUTEX_ERRORCHECK_NP);]])],
[result="yes" defval=1], [result="no" defval=0])
AC_MSG_RESULT([$result])
AC_DEFINE_UNQUOTED([OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP], [$defval],
[If PTHREADS implementation supports PTHREAD_MUTEX_ERRORCHECK_NP])
# Mac OS X
AC_MSG_CHECKING([for PTHREAD_MUTEX_ERRORCHECK])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <pthread.h>]],
[[pthread_mutexattr_settype(NULL, PTHREAD_MUTEX_ERRORCHECK);]])],
[result="yes" defval=1], [result="no" defval=0])
AC_MSG_RESULT([$result])
AC_DEFINE_UNQUOTED([OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK], [$defval],
[If PTHREADS implementation supports PTHREAD_MUTEX_ERRORCHECK])
CFLAGS="$orig_CFLAGS"
FFLAGS="$orig_FFLAGS"
CXXFLAGS="$orig_CXXFLAGS"
CPPFLAGS="$orig_CPPFLAGS"
CXXCPPFLAGS="$orig_CXXCPPFLAGS"
LDFLAGS="$orig_LDFLAGS"
LIBS="$orig_LIBS"
if test "$OMPI_WANT_F77_BINDINGS" != "1"; then
ompi_pthread_f77_success=1
fi
if test "$ompi_pthread_c_success" = "1" -a \
"$ompi_pthread_cxx_success" = "1" -a \
"$ompi_pthread_f77_success" = "1"; then
internal_useless=1
$1
else
internal_useless=1
$2
fi
unset ompi_pthread_c_success ompi_pthread_f77_success ompi_pthread_cxx_success
unset internal_useless
])dnl
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