opencv: Fix java wrapper generation

During configuration the java wrappers are generated (if java
is enabled via PACKAGECOFIG).

Unfortunately, the script that generates the .java files do not handle
properly paths with special symbols, such as +.

This is just a workaround for that.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-support/opencv/opencv/javagen.patch

@@ -0,0 +1,16 @@
+Upstream-status: Inappropriate [OE specific] https://github.com/opencv/opencv/pull/10039#issuecomment-342539288
+
+Signed-off-by: Ricardo Ribalda <ricardo.ribalda@gmail.com>
+diff --git a/modules/java/CMakeLists.txt b/modules/java/CMakeLists.txt
+index 74bc0ef04169..4622fbf9a5f1 100644
+--- a/modules/java/CMakeLists.txt
++++ b/modules/java/CMakeLists.txt
+@@ -291,7 +291,7 @@ foreach(java_file ${step3_input_files})
+   endif()
+   if(__configure)
+     configure_file("${java_file}" "${java_src_dir}/${output_name}" @ONLY)
+-  elseif(NOT "${java_file}" MATCHES "${OpenCV_BINARY_DIR}/")
++  elseif(EXISTS "${java_file}" AND NOT "${java_file}" MATCHES "${OpenCV_BINARY_DIR}/")
+     configure_file("${java_file}" "${java_src_dir}/${output_name}" COPYONLY)
+   else()
+     add_custom_command(OUTPUT "${java_src_dir}/${output_name}"

meta-oe/recipes-support/opencv/opencv_3.3.bb

@@ -57,6 +57,7 @@ SRC_URI = "git://github.com/opencv/opencv.git;name=opencv \
     file://0001-carotene-don-t-use-__asm__-with-aarch64.patch \
     file://0002-Do-not-enable-asm-with-clang.patch \
     file://CVE-2017-14136.patch \
+    file://javagen.patch \
     file://protobuf.patch \
 "
 PV = "3.3+git${SRCPV}"