AC_MSG_CHECKING(which MPM to use)

AC_ARG_WITH(mpm,

[ --with-mpm=MPM Choose the process model for Apache to use.

MPM={dexter,mpmt_beos,mpmt_pthread,prefork,spmt_os2}],[

APACHE_MPM=$withval

],[

APACHE_MPM=mpmt_pthread

case "`uname -sr`" in

"BeOS"*)

APACHE_MPM=mpmt_beos;;

"OS/2"*)

APACHE_MPM=spmt_os2;;

esac

])

AC_MSG_RESULT($APACHE_MPM)

apache_cv_mpm=$APACHE_MPM

if test "$apache_cv_mpm" = "mpmt_pthread" -o "$apache_cv_mpm" = "dexter"; then

PTHREADS_CHECK

AC_MSG_CHECKING([for which threading library to use])

AC_MSG_RESULT($threads_result)

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

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

AC_MSG_CHECKING(checking for replacement)

AC_MSG_RESULT(prefork selected)

apache_cv_mpm=prefork

fi

fi

APACHE_CHECK_SHM_RW

APACHE_FAST_OUTPUT(modules/mpm/Makefile)

MPM_NAME=$apache_cv_mpm

MPM_DIR=modules/mpm/$MPM_NAME

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

APACHE_SUBST(MPM_NAME)

MODLIST="$MODLIST mpm_${MPM_NAME}"

dnl All the unix MPMs use shared memory; save a little duplication

AC_DEFUN(APACHE_MPM_CHECK_SHMEM, [

AC_CHECK_FUNCS(shmget)

AC_FUNC_MMAP

AC_MSG_CHECKING(which shared memory mechanism to use)

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

AC_DEFINE(USE_SHMGET_SCOREBOARD,,

[Define if MPMs should use shmget to implement their shared memory])

AC_MSG_RESULT(shmget)

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

AC_DEFINE(USE_MMAP_SCOREBOARD,,

[Define if MPMs should use mmap to implement their shared memory])

AC_MSG_RESULT(mmap)

else

AC_MSG_ERROR(No known shared memory system)

fi

])

dnl Check for pthreads and attempt to support it

AC_DEFUN(APACHE_MPM_PTHREAD, [

dnl XXX - We should be checking for the proper flags to use on a particular

dnl platform. This will cover a couple of them, anyway

AC_CHECK_HEADER(pthread.h, [ ],[

AC_MSG_ERROR(This MPM requires pthreads. Try --with-mpm=prefork.)

])

AC_CHECK_FUNC(pthread_create, [ ],[

AC_MSG_ERROR(Can't compile pthread code.)

])

dnl User threads libraries need pthread.h included everywhere

AC_DEFINE(PTHREAD_EVERYWHERE,,

[Define if all code should have #include <pthread.h>])

])