R version 2.15.2 (2012-10-26) -- "Trick or Treat" Platform x86_64-apple-darwin9.8.0/x86_64 (64-bit) java version "1.7.0_09" Java(TM) SE Runtime Environment (build 1.7.0_09-b05) Java HotSpot(TM) 64-Bit Server VM (build 23.5-b02,mixed mode)
我已经使用install.packages函数和使用R 2.15.2的命令行安装来安装rJava.我没有任何错误.
$R CMD INSTALL rJava * installing to library ‘/Library/Frameworks/R.framework/Versions/2.15/Resources/library’ * installing *binary* package ‘rJava’ ... * DONE (rJava) $
如果我使用Java Preferences将1.7首先放在列表中,但保持1.6“on”,则rJava始终启动1.6.
如果我使用Java Preferences先放1.7并关闭1.6,rJava会这样做：
> library(rJava) > .jinit() JavaVM: requested Java version ((null)) not available. Using Java at "" instead. JavaVM: Failed to load JVM: /bundle/Libraries/libserver.dylib JavaVM FATAL: Failed to load the jvm library. Error in .jinit() : JNI_GetCreatedJavaVMs returned -1 >
但是,使用系统函数,R本身可以找到Java 1.7.
> system("java -version")
java version "1.7.0_09"
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)
Java HotSpot(TM) 64-Bit Server VM (build 23.5-b02,mixed mode)
>
1.7需要/System/Library/Java/JavaConfig.plist中的特殊条目吗？
Versions目录是否需要调整为1.7？很奇怪,Current转到A,最终得到1.7,而CurrentJDK被映射到1.6
$cd /System/Library/Frameworks/JavaVM.framework/Versions/ $ls -la total 64 drwxr-xr-x 11 root wheel 374 Sep 26 10:10 . drwxr-xr-x 11 root wheel 374 Nov 26 09:24 .. lrwxr-xr-x 1 root wheel 10 Sep 26 10:09 1.4 -> CurrentJDK lrwxr-xr-x 1 root wheel 10 Sep 26 10:09 1.4.2 -> CurrentJDK lrwxr-xr-x 1 root wheel 10 Sep 26 10:09 1.5 -> CurrentJDK lrwxr-xr-x 1 root wheel 10 Sep 26 10:09 1.5.0 -> CurrentJDK lrwxr-xr-x 1 root wheel 10 Sep 26 10:09 1.6 -> CurrentJDK lrwxr-xr-x 1 root wheel 10 Sep 26 10:09 1.6.0 -> CurrentJDK drwxr-xr-x 8 root wheel 272 Nov 26 09:24 A lrwxr-xr-x 1 root wheel 1 Sep 26 10:09 Current -> A lrwxr-xr-x 1 root wheel 59 Sep 26 10:09 CurrentJDK -> /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents
即使使用R CMD javareconf直接运行指向1.7文件的路径或运行/usr/bin/java路径,rJava仍然无法找到或启动Java 1.7.
1.7是否需要设置JAVA_LD_LIBRARY_PATH变量？
Makeconf:JAVA = /usr/bin/java Makeconf:JAVAC = /usr/bin/javac Makeconf:JAVAH = /usr/bin/javah Makeconf:JAVA_HOME = /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home/jre Makeconf:JAVA_LD_LIBRARY_PATH = Makeconf:JAVA_LIBS = -framework JavaVM Makeconf:JAVA_CPPFLAGS = -I$(JAVA_HOME)/include Makeconf:JAR = /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home/bin/jar Makeconf:JAVA = /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home/jre/bin/java Makeconf:JAVAC = /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home/bin/javac Makeconf:JAVAH = /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home/bin/javah Makeconf:JAVA_HOME = /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home/jre Makeconf:JAVA_LD_LIBRARY_PATH = Makeconf:JAVA_LIBS = -framework JavaVM Makeconf:JAVA_CPPFLAGS = -I$(JAVA_HOME)/include
谢谢你的帮助
更新1：
我在stats-rosuda-devel列表上问了这个问题,并收到了Simon Urbanek的以下回复.我不认为Windows和Linux在需要从源代码编译Java 1.7时遇到同样的问题,因为我们在Windows和Linux上运行它并且不必编译rJava.一旦我有机会尝试这个,我会报告回来：
You are using the binary which is compiled against system Java@H_403_39@ (which on your system is 1.6) – so if you remove Java 1.6 you’ll break@H_403_39@ it. If you want to use Java 1.7,you’ll have to re-configure R for@H_403_39@ Java 1.7 and re-compile rJava to use those settings. Note that@H_403_39@ Oracle’s Java lives in an entirely different place@H_403_39@ (/Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk) than the system@H_403_39@ Java (/System/Library/Frameworks/JavaVM.framework),so it is not@H_403_39@ interchangeable.
In addition,Oracle Java 1.7 is not a framework,it’s a big mess that@H_403_39@ was not really designed for OS X,so you have to set it by hand to@H_403_39@ settings like on Linux – it’s pretty painful. Also it requires@H_403_39@ overrides … so if you really want to go down the rabbit hole,this@H_403_39@ is what worked for me:
06006
Then install rJava from sources (R64 ->@H_403_39@ install.packages(“rJava”,type=’source’)). Note that it’s 64-bit only,@H_403_39@ so it will only work with 64-bit R.
情况是我的Java目录配置不正确.
1)首先运行：sudo R CMD javareconf.它应该如下：
Java interpreter : /usr/bin/java Java version : 1.7.0_40 Java home path : /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre Java compiler : /usr/bin/javac Java headers gen.: /usr/bin/javah Java archive tool: /usr/bin/jar Non-system Java on OS X trying to compile and link a JNI progam detected JNI cpp flags : -I$(JAVA_HOME)/../include -I$(JAVA_HOME)/../include/darwin detected JNI linker flags : -L$(JAVA_HOME)/lib/server -ljvm llvm-gcc-4.2 -arch x86_64 -std=gnu99 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre/../include -I/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre/../include/darwin -I/usr/local/include -fPIC -mtune=core2 -g -O2 -c conftest.c -o conftest.o llvm-gcc-4.2 -arch x86_64 -std=gnu99 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/usr/local/lib -L/usr/local/lib -o conftest.so conftest.o -L/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre/lib/server -ljvm -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation JAVA_HOME : /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre Java library path: $(JAVA_HOME)/lib/server JNI cpp flags : -I$(JAVA_HOME)/../include -I$(JAVA_HOME)/../include/darwin JNI linker flags : -L$(JAVA_HOME)/lib/server -ljvm Updating Java configuration in /Library/Frameworks/R.framework/Resources Done.
2)在R中,运行：install.packages(“rJava”,type =’source’).安装应该返回DONE(rJava).请注意,我必须设置
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
当我需要以root身份启动R：sudo R.要以普通用户身份运行,请使用
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre
碰巧在我看来,我没有将上面的/usr/bin/java *的符号链接设置为Java 1.7中的相应链接(转而使用版本1.6)并且从那里得到了所有的挫败感.链接应该是这样的:(看起来R中只需要java,javac,javah和jar).
$ls -l /usr/bin/ja* lrwxr-xr-x 1 root wheel 71 Oct 3 11:44 /usr/bin/jar -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/jar lrwxr-xr-x 1 root wheel 77 Oct 3 12:14 /usr/bin/jarsigner -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/jarsigner lrwxr-xr-x 1 root wheel 72 Oct 3 11:44 /usr/bin/java -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/java lrwxr-xr-x 1 root wheel 73 Oct 3 11:42 /usr/bin/javac -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/javac lrwxr-xr-x 1 root wheel 75 Oct 3 12:15 /usr/bin/javadoc -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/javadoc lrwxr-xr-x 1 root wheel 73 Oct 3 11:44 /usr/bin/javah -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/javah lrwxr-xr-x 1 root wheel 73 Oct 3 12:15 /usr/bin/javap -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/javap lrwxr-xr-x 1 root wheel 74 Oct 3 12:15 /usr/bin/javaws -> /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/javaws
