java 致命错误：jni_md.h：没有这样的文件或目录#include "jni_md.h"
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fatal error: jni_md.h: No such file or directory #include "jni_md.h"
提问by Manjunath
While executing gcccommand on ubuntu for generating .a or .so file for JNI, getting below error for both openjdk 8 / oraclejdk8.
gcc在 ubuntu 上执行命令为 JNI 生成 .a 或 .so 文件时，openjdk 8 / oraclejdk8 都出现以下错误。
$gcc -I/usr/lib/jvm/java-8-openjdk-amd64/include -c MainImpl1.c -o MainImpl1.o
In file included from MainImpl1.c:1:0:
/usr/lib/jvm/java-8-openjdk-amd64/include/jni.h:45:20: fatal error: jni_md.h: No such file or directory
#include "jni_md.h"
^
compilation terminated.
$gcc -I/usr/lib/jvm/java-8-oracle/include -c MainImpl1.c -o MainImpl1.o
In file included from MainImpl1.c:1:0:
/usr/lib/jvm/java-8-oracle/include/jni.h:45:20: fatal error: jni_md.h: No such file or directory
#include "jni_md.h"
^
compilation terminated.
I have given example for generating .a file, but same issue observed for .so file generation also.
我已经给出了生成 .a 文件的示例，但对于 .so 文件生成也观察到了同样的问题。
But same gcccommand works for openjdk7/oraclejdk7.
但同样的gcc命令适用于 openjdk7/oraclejdk7。
What is the issue here?
这里有什么问题？
回答by Mathieu
I think that you do not added include directory that includes jni_md.hwhich is platform dependent.
我认为你不添加包括包括目录jni_md.h是依赖于平台。
Try
尝试
$gcc -I/usr/lib/jvm/java-8-openjdk-amd64/include -I/usr/lib/jvm/java-8-openjdk-amd64/include/linux -c MainImpl1.c -o MainImpl1.o
or
或者
$gcc -I/usr/lib/jvm/java-8-oracle/include -I/usr/lib/jvm/java-8-oracle/include/linux -c MainImpl1.c -o MainImpl1.o
If you don't know where jni_md.h is, use find:
如果您不知道 jni_md.h 在哪里，请使用find：
find / -name jni_md.h 2> /dev/null
