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

mpm_explicit="yes"

],[

APACHE_MPM=mpmt_pthread

PLAT=`$ac_config_guess`

PLAT=`$ac_config_sub $PLAT`

case "$PLAT" in

*beos*)

APACHE_MPM=mpmt_beos;;

*os2_emx*)

APACHE_MPM=spmt_os2;;

esac

mpm_explicit="no"

])

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 "$pthreads_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_SIGWAIT_ONE_ARG

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

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

if test "$MPM_NAME" = "prefork" ; then

MPM_NAME="prefork"

MPM_FAKE_NAME=prefork.c

EXTRA_CFLAGS="$EXTRA_CFLAGS -DPREFORK"

ac_cv_enable_threads="no"

AC_CACHE_SAVE

fi

dnl The MPM_FAKE_NAME allow the mpmt MPM to emulate all of the MPMs without

dnl Apache actually knowing it. The problem is IfModule. IfModule uses

dnl the C file's name to know if the module is loaded. Without this change

dnl mpmt always shows up as mpmt.c, and we can't distinguish between all

dnl of the emulated MPMs.

dnl

dnl This fixes that by creating a soft link that has the name of the

dnl desired MPM to mpmt.c. Now, Apache can search for the specified MPM

dnl and actually find it.

if test "$MPM_NAME" = "mpmt_pthread" ; then

EXTRA_CFLAGS="$EXTRA_CFLAGS -DMPMT_PTHREAD"

MPM_FAKE_NAME=mpmt_pthread.c

ln -s mpmt.c modules/mpm/mpmt/mpmt_pthread.c

elif test "$MPM_NAME" = "dexter" ; then

EXTRA_CFLAGS="$EXTRA_CFLAGS -DDEXTER"

MPM_FAKE_NAME=dexter.c

ln -s mpmt.c modules/mpm/mpmt/dexter.c

fi

if test "$MPM_NAME" = "dexter" -o "$MPM_NAME" = "mpmt_pthread" -o "$MPM_NAME" = "prefork"; then

MPM_DIR=modules/mpm/mpmt;

MPM_LIB=$MPM_DIR/libmpmt.la

MPM_NAME="mpmt"

else

MPM_DIR=modules/mpm/$MPM_NAME

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

fi

fi

APACHE_SUBST(MPM_NAME)

APACHE_SUBST(MPM_FAKE_NAME)

MODLIST="$MODLIST mpm_${MPM_NAME}"

dnl Check for pthreads and attempt to support it

AC_DEFUN(APACHE_MPM_PTHREAD, [

if test "$pthreads_working" != "yes"; then

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

fi

dnl User threads libraries need pthread.h included everywhere

AC_DEFINE(PTHREAD_EVERYWHERE,,

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

])