[#] start of __file__

dnl MPICH_SUBCFG_BEFORE=src/pm/util

AC_DEFUN([PAC_SUBCFG_PREREQ_]PAC_SUBCFG_AUTO_SUFFIX,[

])

dnl _BODY handles the former role of configure in the subsystem

AC_DEFUN([PAC_SUBCFG_BODY_]PAC_SUBCFG_AUTO_SUFFIX,[

# the pm_names variable is set by the top level configure

build_remshell=no

for pm_name in $pm_names ; do

    if test "X$pm_name" = "Xremshell" ; then

        build_remshell=yes

    fi

done

AM_CONDITIONAL([BUILD_PM_REMSHELL],[test "X$build_remshell" = "Xyes"])

# first_pm_name is set by the top level configure

AM_CONDITIONAL([PRIMARY_PM_REMSHELL],[test "X$first_pm_name" = "Xremshell"])

AM_COND_IF([BUILD_PM_REMSHELL],[

AC_MSG_NOTICE([RUNNING CONFIGURE FOR src/pm/remshell])

# Check that we are using the simple PMI implementation

# (Selecting multiple PMs may require incompatible PMI implementations 

# (e.g., remshell and SMPD).

if test -z "$PM_REQUIRES_PMI" ; then

    PM_REQUIRES_PMI=simple

elif test "$PM_REQUIRES_PMI" != "simple" ; then

    echo "remshell requires the simple PMI implementation; $PM_REQUIRES_PMI has already been selected"

    exit 1

fi

# tell src/pm/util to configure itself

build_pm_util=yes

AC_ARG_ENABLE([allowport],

              [AS_HELP_STRING([--enable-allowport],

                              [Turn on use of a port for communicating with the processes started by mpiexec])],

              [],

              [enable_allowport=yes])

AC_ARG_ENABLE([onsig],

              [AS_HELP_STRING([--enable-onsig],

                              [Control the handling of processes that signal

                               (e.g., SEGV) using ptrace.  Disabled by default])],

              [],

              [enable_onsig=no])

AC_ARG_ENABLE([newsession],

              [AS_HELP_STRING([--enable-newsession],

                              [Create a new process group session if standard

                               in is not connected to a terminal])],

              [],

              [enable_newsession=yes])

dnl check for library functions

dnl

dnl Check for special compile characteristics

dnl

dnl Is there libnsl needed for gethostbyname?

dnl AC_SEARCH_LIBS(gethostbyname,nsl)

AC_SEARCH_LIBS([socketpair],[socket])

dnl

dnl Check for a specific header

AC_CHECK_HEADERS([sys/types.h signal.h sys/ptrace.h])

dnl

dnl Check for functions.  This invokes another test if the function is 

dnl found.  The braces around the second test are essential. 

dnl AC_CHECK_FUNC(setpgrp,[AC_FUNC_SETPGRP])

AC_CHECK_FUNCS([strsignal])

dnl 

dnl Check for signal handlers

AC_CHECK_FUNCS([sigaction signal sigset])

sigaction_ok=no

if test "$ac_cv_func_sigaction" = "yes" ; then

    AC_CACHE_CHECK([for struct sigaction],pac_cv_struct_sigaction,[

    AC_TRY_COMPILE([#include <signal.h>],[

struct sigaction act; sigaddset( &act.sa_mask, SIGINT );],

    pac_cv_struct_sigaction="yes",pac_cv_struct_sigaction="no")])

    if test "$pac_cv_struct_sigaction" = "no" ; then

        AC_CACHE_CHECK([for struct sigaction with _POSIX_SOURCE],

	pac_cv_struct_sigaction_needs_posix,[

        AC_TRY_COMPILE([#define _POSIX_SOURCE

#include <signal.h>],[

struct sigaction act; sigaddset( &act.sa_mask, SIGINT );],

       pac_cv_struct_sigaction_needs_posix="yes",

       pac_cv_struct_sigaction_needs_posix="no")])

        if test "$pac_cv_struct_sigaction_needs_posix" = "yes" ; then

            sigaction_ok=yes

	fi

    else

        sigaction_ok=yes

    fi

fi

dnl

# Decide on the signal handler to use

if test "$ac_cv_func_sigaction" = "yes" -a "$sigaction_ok" = "yes" ; then

    # FIXME DJG: where should this get set?

    if test "$pac_struct_sigaction_needs_posix" = yes ; then

        AC_DEFINE(NEEDS_POSIX_FOR_SIGACTION,1,[Define if _POSIX_SOURCE needed to get sigaction])

    fi

    AC_DEFINE(USE_SIGACTION,1,[Define if sigaction should be used to set signals])

elif test "$ac_cv_func_signal" = "yes" ; then

    AC_DEFINE(USE_SIGNAL,1,[Define if signal should be used to set signals])

fi

dnl

if test "$enable_allowport" = "yes" ; then

   AC_DEFINE(MPIEXEC_ALLOW_PORT,1,[Define if a port may be used to communicate with the processes])

fi

# some of these may be redundant with the upper level code, although the caching

# should detect it and make the performance impact a non-issue

AC_CHECK_HEADERS([string.h sys/time.h unistd.h stdlib.h sys/socket.h wait.h errno.h])

AC_CHECK_FUNCS([ptrace])

# It isn't enough to find ptrace.  We also need the ptrace 

# parameters, which some systems, such as IRIX, do not define.

if test "$ac_cv_func_ptrace" = yes ; then

    AC_CACHE_CHECK([for ptrace named parameters],

[pac_cv_has_ptrace_parms],[

    AC_TRY_COMPILE([

#include <sys/types.h>

#include <sys/ptrace.h>],[int i = PTRACE_CONT;],[pac_cv_has_ptrace_parms=yes],

[pac_cv_has_ptrace_parms=no])])

    if test "$pac_cv_has_ptrace_parms" = "yes" ; then

        AC_DEFINE([HAVE_PTRACE_CONT],[],[Define if ptrace parameters available])

    fi

fi

dnl The test for getsid etc is in src/pm/util (see the subconfigure.m4 there)

dnl AC_CHECK_FUNCS([setsid isatty getsid])

if test "$enable_newsession" = "yes" ; then

    AC_DEFINE([USE_NEW_SESSION],[1],[Define if mpiexec should create a new process group session])

fi

AC_PATH_PROG([SSH],[ssh])

AC_PATH_PROG([RSH],[rsh])

if test -z "$SSH" && test -n "$RSH" ; then

    remshell="$RSH"

else

    remshell="$SSH"

fi

AC_DEFINE_UNQUOTED(DEFAULT_MACHINES_PATH,"$eval_datadir:.",[Define the search path for machines files])

AC_DEFINE_UNQUOTED(DEFAULT_REMOTE_SHELL,"$remshell",[Define the default remote shell program to use])

])dnl end AM_COND_IF(BUILD_PM_REMSHELL,...)

])dnl end _BODY

dnl

[#] end of __file__