Android compilation requires BUILD_WITH_JAVA

[ayounes-nviso]

System information (version)

• OpenCV => 8570073 (master as of Feb 18)
• Operating System / Platform => Ubuntu 1810, cross compiling to Android

Detailed description

Android compilation requires BUILD_WITH_JAVA

Steps to reproduce

cmake . -DBUILD_WITH_JAVA=OFF

Fix

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1082,8 +1082,10 @@ if(ANDROID)
   status("    Android ABI:" ${ANDROID_ABI})
   status("    STL type:" ${ANDROID_STL})
   status("    Native API level:" android-${ANDROID_NATIVE_API_LEVEL})
-  android_get_compatible_target(android_sdk_target_status ${ANDROID_NATIVE_API_LEVEL} ${ANDROID_SDK_TARGET} 11)
-  status("    SDK target:" "${android_sdk_target_status}")
+  if(BUILD_WITH_JAVA)
+    android_get_compatible_target(android_sdk_target_status ${ANDROID_NATIVE_API_LEVEL} ${ANDROID_SDK_TARGET} 11)
+    status("    SDK target:" "${android_sdk_target_status}")
+  endif()
   if(BUILD_WITH_ANDROID_NDK)
     status("    Android NDK:" "${ANDROID_NDK} (toolchain: ${ANDROID_TOOLCHAIN_NAME})")
   elseif(BUILD_WITH_STANDALONE_TOOLCHAIN)