Java Linux 上的 JDK 1.8 缺少 JNI 包含文件
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JDK 1.8 on Linux missing JNI include file
提问by arash javan
I am trying to compile the following project:
我正在尝试编译以下项目：
https://github.com/entropia/libsocket-can-java
I always get this error message? Does anyone know how to fix it, is it possibly a bug in JDK 1.8.0.11 on Linux (x64 Debian Wheezy)?
我总是收到此错误消息？有谁知道如何修复它，它可能是 Linux (x64 Debian Wheezy) 上 JDK 1.8.0.11 中的错误吗？
In file included from jni/de_entropia_can_CanSocket.h:2:0,
from jni/cansocket.cpp:23:
/opt/jdk1.8.0_11/include/jni.h:45:20: fatal error: jni_md.h: No such file or directory
#include "jni_md.h"
^
采纳答案by Salem
It seems so. #include "jni_md.h"would include the file in the same directory as jni.h, but it is placed in linuxfolder.
似乎是这样。#include "jni_md.h"会将文件包含在与 相同的目录中jni.h，但它放在linux文件夹中。
In previous JDK versions it seems that file and another were place in include/linuxfolder, but there are symlinks to both files in include.
在以前的 JDK 版本中，文件和另一个文件似乎都放在include/linux文件夹中，但是include.
So you can just create symlinks to both files:
所以你可以只为这两个文件创建符号链接：
$ sudo ln -s /opt/jdk1.8.0_11/include/linux/jni_md.h /opt/jdk1.8.0_11/include/jni_md.h
$ sudo ln -s /opt/jdk1.8.0_11/include/linux/jawt_md.h /opt/jdk1.8.0_11/include/jawt_md.h
Edit
编辑
As stated in the comments by Absurd-Mind and Mikkel, there is also the option to add that path to the makefile compiler options:
正如 Absurd-Mind 和 Mikkel 的评论中所述，还可以选择将该路径添加到 makefile 编译器选项中：
-I$(JAVA_HOME)/include/linux/
回答by teardrop
No, this is not a bug. The correct way to solve this issue is to provide -I${JAVA_HOME}/include -I${JAVA_HOME}/include/linuxcompiler options. This way your build scripts remain portable.
不，这不是错误。解决这个问题的正确方法是提供-I${JAVA_HOME}/include -I${JAVA_HOME}/include/linux编译器选项。这样您的构建脚本就可以保持可移植性。
The OP is facing the problem on Linux, but if anybody is facing this problem on windows, please add following compiler options.
OP 在 Linux 上面临这个问题，但如果有人在 Windows 上面临这个问题，请添加以下编译器选项。
-I"%JAVA_HOME%\include" -I"%JAVA_HOME%\include\win32"where JAVA_HOME points to your JDK installation directory, usually 'C:\Program Files\Java\jdk1.{7|8}.{}_{xx}'
-I"%JAVA_HOME%\include" -I"%JAVA_HOME%\include\win32"其中 JAVA_HOME 指向你的 JDK 安装目录，通常是 'C:\Program Files\Java\jdk1.{7|8}.{}_{xx}'
回答by imriss
It is also possible that there are more than one JDKthat have been deployed, and the one that is linked to $JAVA_HOMEis not the correct one. You need to update $JAVA_HOMEto that that contains the jni_md.hfile.
也有可能JDK已经部署了不止一个，并且链接到的那个$JAVA_HOME不是正确的。您需要更新$JAVA_HOME到包含该jni_md.h文件的那个。
