Update OpenCVDownload.cmake unpack

jodrescher · web-flow · commit 50b651655d5c · 2017-09-21T14:00:43.000+02:00
Added new "f" flag to the tar unpack, because without it doesn't complete, an compile fails
diff --git a/cmake/OpenCVDownload.cmake b/cmake/OpenCVDownload.cmake
@@ -216,7 +216,7 @@ ${OPENCV_DOWNLOAD_LOG}
     ocv_download_log("#mkdir \"${DL_DESTINATION_DIR}\"")
     file(MAKE_DIRECTORY "${DL_DESTINATION_DIR}")
     ocv_download_log("#unpack \"${DL_DESTINATION_DIR}\" \"${CACHE_CANDIDATE}\"")
-    execute_process(COMMAND "${CMAKE_COMMAND}" -E tar xz "${CACHE_CANDIDATE}"
+    execute_process(COMMAND "${CMAKE_COMMAND}" -E tar xzf "${CACHE_CANDIDATE}"
                     WORKING_DIRECTORY "${DL_DESTINATION_DIR}"
                     RESULT_VARIABLE res)
     if(NOT res EQUAL 0)
