Add the IBM DB2 for i storage engine.

Modify plugins.m4 configuration framework so that plugins which are
not built still get added to the source distribution during make dist.
This came up now because we can only build ibmdb2i on i5/OS, and we
can't bootstrap our source dist on that platform.  The solution is to
specify DIST_SUBDIRS containing all plugins, separate from SUBDIRS
which contains the plugins which are actually built.

This ibmdb2i code is from the ibmdb2i-ga3-src.zip file, with a patch
to plug.in to disable the plugin if the PASE environment isn't available.

1 files changed, 51 insertions, 21 deletions

diff --git a/config/ac-macros/plugins.m4 b/config/ac-macros/plugins.m4
index 8dfb698709f..e1da6fd11f5 100644
--- a/config/ac-macros/plugins.m4
+++ b/config/ac-macros/plugins.m4
@@ -302,7 +302,9 @@ AC_DEFUN([MYSQL_CONFIGURE_PLUGINS],[
     _MYSQL_CONFIGURE_PLUGINS(m4_bpatsubst(__mysql_plugin_list__, :, [,]))
     _MYSQL_EMIT_PLUGIN_ACTIONS(m4_bpatsubst(__mysql_plugin_list__, :, [,]))
     AC_SUBST([mysql_se_dirs])
+    AC_SUBST([mysql_se_distdirs])
     AC_SUBST([mysql_pg_dirs])
+    AC_SUBST([mysql_pg_distdirs])
     AC_SUBST([mysql_se_unittest_dirs])
     AC_SUBST([mysql_pg_unittest_dirs])
     AC_SUBST([condition_dependent_plugin_modules])
@@ -354,6 +356,24 @@ AC_DEFUN([__MYSQL_EMIT_CHECK_PLUGIN],[
   fi
   AC_MSG_RESULT([no])
  ],[
+
+  # Plugin is not disabled, determine if it should be built,
+  # or only distributed
+
+  m4_ifdef([$6], [
+    if test ! -d "$srcdir/$6"; then
+      # Plugin directory was removed after autoconf was run; treat
+      # this as a disabled plugin
+      if test "X[$with_plugin_]$2" = Xyes; then
+        AC_MSG_RESULT([error])
+        AC_MSG_ERROR([disabled])
+      fi
+
+      # The result message will be printed below
+      [with_plugin_]$2=no
+    fi
+  ])
+
   m4_ifdef([$9],[
    if test "X[$with_plugin_]$2" = Xno; then
      AC_MSG_RESULT([error])
@@ -372,6 +392,8 @@ AC_DEFUN([__MYSQL_EMIT_CHECK_PLUGIN],[
      ;;
    esac
   ])
+
+
   if test "X[$with_plugin_]$2" = Xno; then
     AC_MSG_RESULT([no])
   else
@@ -448,28 +470,36 @@ dnl Although this is "pretty", it breaks libmysqld build
        condition_dependent_plugin_includes="$condition_dependent_plugin_includes -I[\$(top_srcdir)]/$6/m4_bregexp($11, [^.+[/$]], [\&])"
       ])
     fi
-    m4_ifdef([$6],[
-      if test -n "$mysql_use_plugin_dir" ; then
-        mysql_plugin_dirs="$mysql_plugin_dirs $6"
-        m4_syscmd(test -f "$6/configure")
-        ifelse(m4_sysval, 0,
-          [AC_CONFIG_SUBDIRS($6)],
-          [AC_CONFIG_FILES($6/Makefile)]
-        )
-        ifelse(m4_substr($6, 0, 8), [storage/],
-          [
-            [mysql_se_dirs="$mysql_se_dirs ]m4_substr($6, 8)"
-             mysql_se_unittest_dirs="$mysql_se_unittest_dirs ../$6"
-          ],
-          m4_substr($6, 0, 7), [plugin/],
-          [
-            [mysql_pg_dirs="$mysql_pg_dirs ]m4_substr($6, 7)"
-             mysql_pg_unittest_dirs="$mysql_pg_unittest_dirs ../$6"
-          ],
-          [AC_FATAL([don't know how to handle plugin dir ]$6)])
-      fi
-    ])
   fi
+
+  m4_ifdef([$6], [
+    if test -d "$srcdir/$6"; then
+      # Even if we don't build a plugin, we bundle its source into the dist
+      # file.  So its Makefile (and Makefiles for any subdirs) must be
+      # generated for 'make dist' to work.
+      m4_syscmd(test -f "$6/configure")
+      ifelse(m4_sysval, 0,
+        [AC_CONFIG_SUBDIRS($6)],
+        [AC_CONFIG_FILES($6/Makefile)]
+      )
+
+      ifelse(
+        m4_substr($6, 0, 8), [storage/], [
+          mysql_se_distdirs="$mysql_se_distdirs m4_substr($6, 8)"
+          if test -n "$mysql_use_plugin_dir" ; then
+            mysql_se_dirs="$mysql_se_dirs m4_substr($6, 8)"
+            mysql_se_unittest_dirs="$mysql_se_unittest_dirs ../$6"
+          fi],
+
+        m4_substr($6, 0, 7), [plugin/], [
+          mysql_pg_distdirs="$mysql_pg_distdirs m4_substr($6, 7)"
+          if test -n "$mysql_use_plugin_dir" ; then
+            mysql_pg_dirs="$mysql_pg_dirs m4_substr($6, 7)"
+            mysql_pg_unittest_dirs="$mysql_pg_unittest_dirs ../$6"
+          fi],
+        [AC_FATAL([don't know how to handle plugin dir ]$6)])
+    fi
+  ])
  ])
 ])