1 files changed, 79 insertions, 0 deletions
diff --git a/server/mpm/config.m4 b/server/mpm/config.m4
new file mode 100644
index 00000000..6ea447d1
--- /dev/null
+++ b/server/mpm/config.m4
@@ -0,0 +1,79 @@
+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={beos|event|worker|prefork|mpmt_os2}),[
+  APACHE_MPM=$withval
+],[
+  if test "x$APACHE_MPM" = "x"; then
+    APACHE_MPM=prefork
+  fi
+])
+AC_MSG_RESULT($APACHE_MPM)
+
+apache_cv_mpm=$APACHE_MPM
+	
+ap_mpm_is_threaded ()
+{
+    if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "event" ; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+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 $host in
+      *-linux-*)
+        case `uname -r` in
+          2.0* )
+            dnl Threaded MPM's are not supported on Linux 2.0
+            dnl as on 2.0 the linuxthreads library uses SIGUSR1
+            dnl and SIGUSR2 internally
+            echo "Threaded MPM's are not supported on this platform"
+            AC_MSG_CHECKING(checking for replacement)
+            AC_MSG_RESULT(prefork selected)
+            apache_cv_mpm=prefork
+          ;;
+        esac
+      ;;
+    esac
+  fi
+fi
+
+APACHE_FAST_OUTPUT(server/mpm/Makefile)
+
+MPM_NAME=$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${MPM_NAME}.la
+
+if test ! -f "$abs_srcdir/$MPM_DIR/mpm.h"; then
+    AC_MSG_ERROR(the selected mpm -- $apache_cv_mpm -- is not supported)
+fi
+
+APACHE_SUBST(MPM_NAME)
+APACHE_SUBST(MPM_SUBDIR_NAME)
+MODLIST="$MODLIST mpm_${MPM_NAME}"
+