centos7编译openjdk7常见问题

1、constantPoolOop.cpp文件错误

/srv/java/openJDK/JDK1.7/openjdk/hotspot/src/share/vm/oops/constantPoolOop.cpp: In static member function 'static methodOopDesc* constantPoolOopDesc::method_at_if_loaded(constantPoolHandle, int, Bytecodes::Code)':
/srv/java/openJDK/JDK1.7/openjdk/hotspot/src/share/vm/oops/constantPoolOop.cpp:272:39: error: converting 'false' to pointer type 'methodOop' [-Werror=conversion-null]
   if (cpool->cache() == NULL)  return false;  // nothing to load yet

解决方案：constantPoolOop.cpp文件第272行代码改为：(methodOop)false

2、loopnode.cpp文件报错：

/srv/java/openJDK/JDK1.7/openjdk/hotspot/src/share/vm/opto/loopnode.cpp: In static member function 'static Node* CountedLoopNode::match_incr_with_optional_truncation(Node*, Node**, Node**, const TypeInt**)':
/srv/java/openJDK/JDK1.7/openjdk/hotspot/src/share/vm/opto/loopnode.cpp:896:49: error: converting 'false' to pointer type 'Node*' [-Werror=conversion-null]
   if (expr == NULL || expr->req() != 3)  return false;

解决方案：和上一个问题一样，loopnode.cpp文件第896行改为：（Node*）false;

3、libjvm.so文件未定义：

java full version "1.7.0_80-b15"
Using java runtime at: /opt/jdk1.7.0_80/jre
Error occurred during initialization of VM
Unable to load native library: /opt/jdk1.7.0_80/jre/lib/amd64/libjava.so: symbol JVM_SetNativeThreadName, version SUNWprivate_1.1 not defined in file libjvm.so with link time reference

解决方案：需要下载jdk1.6 rpm

https://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase6-419409.html

4、超过10年的问题：

Error: time is more than 10 years from present: 1136059200000
java.lang.RuntimeException: time is more than 10 years from present: 1136059200000

解决方案：将以下文件里面的日期都改为10年内，可以改为当年时间。

/usr/openjdk/jdk/src/share/classes/java/util/CurrencyData.properties