AC_MSG_CHECKING(which MPM to use)

AC_ARG_WITH(mpm,

APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use.

MPM={simple|beos|event|worker|prefork|mpmt_os2|winnt}

Specify "shared" instead of an MPM name to load MPMs dynamically.

),[

APACHE_MPM=$withval

],[

if test "x$APACHE_MPM" = "x"; then

APACHE_MPM=simple

fi

])

AC_MSG_RESULT($APACHE_MPM)

apache_cv_mpm=$APACHE_MPM

dnl Note that a build with an explicitly loaded MPM must support threaded MPMs.

ap_mpm_is_threaded ()

{

if test "$apache_cv_mpm" = "shared" -o "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "event" -o "$apache_cv_mpm" = "simple" -o "$apache_cv_mpm" = "winnt" ; then

return 0

else

return 1

fi

}

dnl No such check for a shared MPM.

ap_mpm_is_experimental ()

{

if test "$apache_cv_mpm" = "event"; then

return 0

else

return 1

fi

}

if ap_mpm_is_threaded; then

APR_CHECK_APR_DEFINE(APR_HAS_THREADS)

if test "x$ac_cv_define_APR_HAS_THREADS" = "xno"; then

AC_MSG_RESULT(The currently selected MPM requires threads which your system seems to lack)

AC_MSG_CHECKING(checking for replacement)

AC_MSG_RESULT(prefork selected)

apache_cv_mpm=prefork

else

case $host in

*-linux-*)

case `uname -r` in

2.0* )

dnl Threaded MPM's are not supported on Linux 2.0

dnl as on 2.0 the linuxthreads library uses SIGUSR1

dnl and SIGUSR2 internally

echo "Threaded MPM's are not supported on this platform"

AC_MSG_CHECKING(checking for replacement)

AC_MSG_RESULT(prefork selected)

apache_cv_mpm=prefork

;;

esac

;;

esac

fi

fi

APACHE_FAST_OUTPUT(server/mpm/Makefile)

if test "$apache_cv_mpm" = "shared"; then

MPM_NAME=""

MPM_SUBDIR_NAME=""

MPM_LIB=""

MPM_DIR=""

else

MPM_NAME=$apache_cv_mpm

if ap_mpm_is_experimental; then

AC_MSG_WARN(You have selected an EXPERIMENTAL MPM. Be warned!)

MPM_SUBDIR_NAME=experimental/$MPM_NAME

else

MPM_SUBDIR_NAME=$MPM_NAME

fi

MPM_DIR=server/mpm/$MPM_SUBDIR_NAME

MPM_LIB=$MPM_DIR/lib${MPM_NAME}.la

APACHE_SUBST(MPM_NAME)

APACHE_SUBST(MPM_SUBDIR_NAME)

MODLIST="$MODLIST mpm_${MPM_NAME}"

fi

APACHE_SUBST(MPM_NAME)

APACHE_SUBST(MPM_SUBDIR_NAME)