Not finding opencv jar after installing with homebrew

Question

After installing opencv 2.4.8.2 with homebrew, I can't seem to find the jar file in /usr/local/Cellar/opencv/2.4.8.2/share/OpenCV

I'm using Mavericks, any ideas?

Answer 1

Probably you forgot to specify --with-java parameter

brew tap homebrew/science
brew install opencv --with-java

After compiling a jar file is in the path

/usr/local/Cellar/opencv/2.4.9/share/OpenCV/java/opencv-249.jar

Answer 2

I solved the question by installing ant (and the other dependencies of opencv) using homebrew and then using cmake to install opencv instead of homebrew. I downloaded opencv from the website then used the following commands:

cd opencv-2.4.8/
mkdir build
cd build/
cmake -DBUILD_SHARED_LIBS=OFF ..
cmake -G "Unix Makefiles" ..
make -j8

The jar will pop out in the following directory:

opencv-2.4.8/build/bin/opencv-248.jar

Answer 3

I had this issue and tried with the --with-java option and it didn't work.

I had to edit the formula (brew edit opencv3) and insert this options myself:

option "with-contrib", "With contrib"
option "with-java", "With java"

Just above the dependency declarations.

You will also have to ensure that -DBUILD_opencv_java=ON is in your args. Note that the value is set to ON not OFF

After you've done this. Uninstall opencv then install it again.

Answer 4

The error could just be because -DBUILD_opencv_java is not enabled. Enable it using brew edit opencv3