Problem in Graal instalation

[macbook]

Hello, 
I'm a Tunisian student, I'm studying the Grall and Truffle projects.
Since 3 days I'm trying to install Grall on Ubuntu os, but It fail after building (mx build : seen here https://wiki.openjdk.java.net/display/Graal/Instructions)
The problem is seen when I installing the graal VM :


Excluding com.oracle.graal.api.meta (JDK with compliance level 1.8 not available)
Excluding com.oracle.graal.replacements.test (JDK with compliance level 1.8 not available)
hp at ubuntu:~/Bureau$ mx vm
Error occurred during initialization of VM
Unable to load native library: /home/hp/Bureau/graal/jdk1.7.0_51/product/jre/lib/amd64/libjava.so: symbol JVM_SetProtectionDomain, version SUNWprivate_1.1 not defined in file libjvm.so with link time reference


I tried also to install it on OS X, but if fail also.
I installed 5 version of oracle jdk 7, and jdk 8.
Can you help me please to resolve this problem.
Best regards 
Said