--- a/cmake/KF5AuthMacros.cmake	2018-08-26 14:57:02.703186769 +0200
+++ b/cmake/KF5AuthMacros.cmake	2018-08-26 14:58:26.469054620 +0200
@@ -63,12 +63,21 @@
     set(_output ${CMAKE_CURRENT_BINARY_DIR}/${HELPER_ID}.policy)
     get_filename_component(_input ${ACTIONS_FILE} ABSOLUTE)
 
-    add_custom_command(OUTPUT ${_output}
-                       COMMAND KF5::kauth-policy-gen ${_input} ${_output}
-                       MAIN_DEPENDENCY ${_input}
-                       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
-                       COMMENT "Generating ${HELPER_ID}.policy"
-                       DEPENDS KF5::kauth-policy-gen)
+    if(CMAKE_CROSSCOMPILING)
+        add_custom_command(OUTPUT ${_output}
+                           COMMAND "/usr/lib/libexec/kauth/kauth-policy-gen" ${_input} ${_output}
+                           MAIN_DEPENDENCY ${_input}
+                           WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+                           COMMENT "Generating ${HELPER_ID}.policy"
+                           DEPENDS KF5::kauth-policy-gen)
+    else()
+        add_custom_command(OUTPUT ${_output}
+                           COMMAND KF5::kauth-policy-gen ${_input} ${_output}
+                           MAIN_DEPENDENCY ${_input}
+                           WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+                           COMMENT "Generating ${HELPER_ID}.policy"
+                           DEPENDS KF5::kauth-policy-gen)
+    endif()
     add_custom_target(${HELPER_ID}.policy-customtarget ALL COMMENT "actions for ${HELPER_ID}" DEPENDS ${_output})
 
     install(FILES ${_output} DESTINATION ${KAUTH_POLICY_FILES_INSTALL_DIR})