为Mac构建OpenCV JDK 6 32位 [英] Build OpenCV JDK 6 32 bit for Mac

问题描述

这个问题使我连续两天退缩，这时我感到非常绝望.正如问题描述所述，我需要32位版本的OpenCV 2.4.11 Java库，它将在运行优胜美地的Mac上与JDK 1.6一起运行.

This problem has set me back 2 straight days and I am getting very desperate at this point. As the question description states I need the OpenCV 2.4.11 java library 32 bit version that will run with JDK 1.6 on a Mac running Yosemite.

我之所以这样要求是因为我正在使用的另一个库要求32位(

I require this because another library that I am using requires 32 bit (and this is only available with JDK 1.6). Hence I am using JDK 1.6 and passing the VM argument -d32.

我做了两次主要尝试:

对于这两次尝试，我首先将默认的JDK设置为6:

For both attempts I first set my default JDK to 6:

$nano .bash_profile //Opening the Bash Profile
export JAVA_HOME=$(/usr/libexec/java_home -v 1.6) //Set Java_Home to JDK 1.6

(请注意，以下两种方法在使用JDK 1.7和64位构建库时都没有问题.)

方法1: 我尝试使用CMake构建OpenCV库:

Method 1: I try and build the OpenCV library with CMake:

I go to the directory where I saved the library
mkdir build //Create a build directory
cd build //Go the build directory
cmake -G "Unix Makefiles" -D CMAKE_OSX_ARCHITECTURES=i386 -D CMAKE_C_FLAGS=-m32 -D CMAKE_CXX_FLAGS=-m32 ..

(我从 this 线程中找到了此方法)

(I found this method from this thread)

此尝试的旅程到此结束，因为链接Java组件存在问题:

The journey of this attempt ends here because there is a problem with linking the Java components:

-- Could NOT find JNI (missing:  JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH) 

和

--   Java:
--     ant:                         /usr/local/bin/ant (ver 1.9.6)
--     JNI:                         NO
--     Java tests:                  NO

完整的输出可以在此处找到.

The complete output can be found here.

事实证明，这是CMake的问题，我尝试了

It turns out that this is some issue with CMake and I tried the suggestions from this thread. Modifying FindJNI.cmake did not solve the problem.

方法2 我尝试使用HomeBrew构建OpenCV库:

Method 2 I try and build the OpenCV library with HomeBrew:

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

构建正常.找到.jar和.dylib并在Eclipse中创建OpenCV库并运行项目后，出现以下错误:

The build goes fine. Once I locate the .jar and .dylib and create the OpenCV library in Eclipse and run the project I get the following error:

Exception in thread "main" java.lang.UnsupportedClassVersionError: org/opencv/core/Point : Unsupported major.minor version 51.0

这意味着它不是使用JDK 1.6构建的.

Which means that it did not build with JDK 1.6.

其他想法/尝试:

Other thoughts/Attempts:

• 在其他计算机上尝试这些方法.我不得不停下来，因为我 设置cmake和自制软件时遇到麻烦，因为计算机 没有设置为开发者"计算机的地方，即他们没有Git， XCode等.
• 使用JDK 1.5.事实证明，优胜美地不支持JDK，但我发现 此线程我如何尝试将其启动并正在运行.
• 尝试使用早期版本的OpenCV.我尝试了2.4.10版，但 遇到了同样的问题.

• Try the methods on other computers. I had to stop because I ran into trouble setting up cmake and homebrew because the computers where not set up as "developer" computers i.e They did not have Git, XCode etc.
• Using JDK 1.5. Turns out JDK is not supported on Yosemite but I found this thread how I could try get it up and running.
• Try using an earlier version of OpenCV. I tried version 2.4.10 but ran into the same issues.

推荐答案

您可以做的是运行两个程序. 1个32位和1个64位.每个人都通过TCP与对方对话套接字，RMI，消息传递.

What you can do is have two program running. One 32-bit and one 64-bit. Each talks to the other via TCP e.g. SOcket, RMI, Messaging.

这样，您可以同时使用32位和64位库.

This way you can use a 32-bit and a 64-bit library at the same time.

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