diff --git a/build/bakefiles/common_samples_intree.bkl b/build/bakefiles/common_samples_intree.bkl
index 6b9b66cb58..ee8d43a906 100644
--- a/build/bakefiles/common_samples_intree.bkl
+++ b/build/bakefiles/common_samples_intree.bkl
@@ -4,7 +4,7 @@
 <makefile>
 
     <include file="common.bkl"/>
-    
+
     <!-- =============================================================== -->
     <!--                    Template for wxWidgets samples:              -->
     <!-- =============================================================== -->
@@ -20,12 +20,12 @@
     <set var="DLLFLAG">
         <if cond="SHARED=='1'">WXUSINGDLL</if>
     </set>
-    
+
     <template id="wx_util_b" template="wx">
         <include>$(SRCDIR)</include>
         <define>$(DLLFLAG)</define>
     </template>
-    
+
     <template id="wx_util" template="wx_util_b">
         <app-type>gui</app-type>
         <mac-res cond="FORMAT=='autoconf'">$(MACOSX_RESOURCES)</mac-res>
@@ -37,7 +37,7 @@
             <res-include>$(RCDEFDIR)</res-include>
             <res-include>$(TOP_SRCDIR)include</res-include>
         </if>
-        
+
         <win32-res>$(WXTOPDIR)samples/sample.rc</win32-res>
         <if cond="FORMAT=='autoconf'">
             <wx-os2-lib-resource/>
@@ -48,12 +48,12 @@
             <define>NOPCH</define>
         </if>
     </template>
-    
+
     <template id="wx_util_console" template="wx_util_b">
         <app-type>console</app-type>
         <define>wxUSE_GUI=0</define>
     </template>
-    
+
     <template id="wx_sample" template="wx_util">
         <if cond="FORMAT=='autoconf'">
             <wx-mac-app-bundle/>
@@ -67,35 +67,45 @@
             <postlink-command>$(SAMPLES_RPATH_POSTLINK)</postlink-command>
         </if>
     </template>
-    
-    
+
+
     <!-- =============================================================== -->
     <!--                    Support for samples data files:              -->
     <!-- =============================================================== -->
 
-    <define-rule name="wx-data" extends="copy-files">
-        <template>
-            <dependency-of>all</dependency-of>
-            <dstdir>$(BUILDDIR)</dstdir>
-            <srcdir>$(SRCDIR)</srcdir>
-        </template>
+    <if cond="FORMAT_SUPPORTS_ACTIONS=='1'">
+        <define-rule name="wx-data" extends="copy-files">
+            <template>
+                <dependency-of>all</dependency-of>
+                <dstdir>$(BUILDDIR)</dstdir>
+                <srcdir>$(SRCDIR)</srcdir>
+            </template>
+
+            <!--
+            VS - FIXME:
+            Don't clean the files because it would wipe out sources files if
+            BUILDDIR==SRCDIR. This is same behaviour as in the old build system,
+            but it would be better to delete the files during "make clean" if
+            BUILDDIR!=SRCDIR.
+
+            <define-tag name="files">
+                <clean-files>
+                    $(' '.join(['$(BUILDDIR)$(DIRSEP)%s'%x for x in value.split()]))
+                </clean-files>
+            </define-tag>
+            -->
+        </define-rule>
+    </if>
+    <if cond="FORMAT_SUPPORTS_ACTIONS=='0'">
+        <!-- empty stub for project-files formats which don't support <command> -->
+        <define-rule name="wx-data" extends="action">
+            <define-tag name="dstdir"/>
+            <define-tag name="srcdir"/>
+            <define-tag name="files"/>
+        </define-rule>
+    </if>
+
 
-        <!--
-        VS - FIXME:
-        Don't clean the files because it would wipe out sources files if
-        BUILDDIR==SRCDIR. This is same behaviour as in the old build system,
-        but it would be better to delete the files during "make clean" if
-        BUILDDIR!=SRCDIR.
-        
-        <define-tag name="files">
-            <clean-files>
-                $(' '.join(['$(BUILDDIR)$(DIRSEP)%s'%x for x in value.split()]))
-            </clean-files>
-        </define-tag>
-        -->
-    </define-rule>
-    
-    
     <!-- =============================================================== -->
     <!--                    Misc platform specialities:                  -->
     <!-- =============================================================== -->
@@ -108,7 +118,7 @@
         compiling it from .rc file (gcc on OS/2 doesn't ship with resource
         compiler):
         -->
-        <define-tag name="wx-os2-lib-resource" rules="exe">        
+        <define-tag name="wx-os2-lib-resource" rules="exe">
             <set var="os2_lib_res">
                 <if cond="PLATFORM_OS2=='1'">
                     $(TOP_SRCDIR)include/wx/os2/wx.res
@@ -117,5 +127,5 @@
             <set var="__objects" append="1">$(os2_lib_res)</set>
         </define-tag>
     </if>
-    
+
 </makefile>