Detecting OPENCV_ENABLE_NONFREE if set on OpenCV>=3.4.3

introlab · Nov 2, 2018 · b96bc2a · b96bc2a
1 parent 8eda6cb
commit b96bc2a
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -546,7 +546,17 @@ SET(CONF_DEPENDENCIES
 )
 IF(NOT (OPENCV_NONFREE_FOUND OR OPENCV_XFEATURES2D_FOUND))
    SET(NONFREE "//")
-ENDIF(NOT (OPENCV_NONFREE_FOUND OR OPENCV_XFEATURES2D_FOUND))
+ELSEIF(OpenCV_VERSION VERSION_GREATER "3.4.2")
+  FIND_FILE(OpenCV_MODULES_HPP opencv2/opencv_modules.hpp 
+    PATHS ${OpenCV_INCLUDE_DIRS}
+    NO_DEFAULT_PATH)
+  FILE(READ ${OpenCV_MODULES_HPP} TMPTXT)
+  STRING(FIND "${TMPTXT}" "#define OPENCV_ENABLE_NONFREE" matchres)
+  IF(${matchres} EQUAL -1)
+    SET(NONFREE "//")
+  ENDIF(${matchres} EQUAL -1)
+ENDIF()
+
 IF(NOT G2O_FOUND)
    SET(G2O "//")
 ELSE()