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“undefined JNI_GetCreatedJavaVM”和“File format not recognized”错误原因分析

如果编译时,报如下所示错误: ../../third-party/hadoop/lib/libhdfs.a(jni_helper.c.o): In function `getGlobalJNIEnv': /root/hadoop-2.4.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/jni_helper.c:446: undefined reference to `JNI_GetCreatedJavaVMs' /root/hadoop-2.4.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/jni_helper.c:505: undefined reference to `JNI_CreateJavaVM' /root/hadoop-2.4.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/jni_helper.c:505: undefined reference to `JNI_CreateJavaVM' 是因为链接时,没有加上库文件libjvm.so。加上libjvm.so重编译,如果又遇到如下所示的错误: ../../third-party/libjvm.so: file not recognized: File format not recognized 这问题是因为libjvm.so不能被识别,libjvm.so的版本过高导致的 nm ../../third-party/libjvm.so | grep JNI_CreateJavaVM nm: ../../third-party/libjvm.so: 不可识别的文件格式 查看nm的版本: nm --version GNU nm 2.16.91.0.5 20051219 (SUSE Linux) Copyright 2005 Free Software Foundation, Inc. 本程序是自由软件;您可以按照 GNU 通用公共许可证 的条款对其进行再发行。本程序没有任何担保。 现在换成高一点的版本试试: ./nm --version GNU nm 2.17.50.0.6-20.el5 20061020 Copyright 2005 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License.  This program has absolutely no warranty. 再次执行,一切正常,需要升级ld了,或者降低JRE或JDK的版本试试: ./nm libjvm.so | grep JNI_CreateJavaVM 00000000006307c0 T JNI_CreateJavaVM

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