Red Hat Bugzilla – Bug 143881
Gcj will not execute javacc from JPackage
Last modified: 2007-11-30 17:10:57 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux ppc; en-US; rv:1.7.5) Gecko/20041220 Epiphany/1.4.7 Description of problem: Version-Release number of selected component (if applicable): java-1.4.2-gcj-compat-1.4.2.0-21jpp with gcc-java-3.4.3-11 How reproducible: Always Steps to Reproduce: Try to execute javacc-3.2-2jpp from the JPackage project. It will fail with: [mike@imp ~]$ javacc Exception in thread "main" java.lang.NoClassDefFoundError: error: at gnu.gcj.runtime.FirstThread.run() (/usr/lib/libgcj.so.5.0.0) at _Jv_ThreadRun(java.lang.Thread) (/usr/lib/libgcj.so.5.0.0) at _Jv_RunMain(java.lang.Class, byte const, int, byte const, boolean) (/usr/lib/libgcj.so.5.0.0) Additional info:
I can't reproduce this on x86. What does "which gcj" print?
[mike@imp ~]$ which gcj /usr/bin/gcj [mike@imp ~]$ which gij /usr/bin/gij [mike@imp ~]$ which java /usr/bin/java [mike@imp ~]$ ls -l /usr/bin/java lrwxr-xr-x 1 root root 22 Jul 29 13:21 /usr/bin/java -> /etc/alternatives/java [mike@imp ~]$ ls -l /etc/alternatives/java lrwxrwxrwx 1 root root 35 Dec 12 13:35 /etc/alternatives/java -> /usr/lib/jvm/jre-1.4.2-gcj/bin/java
I suspect this is a gcj/gij bug on powerpc. Try running javacc with gij directly: export CLASSPATH=/usr/share/java/javcc.jar:/usr/share/java/libgcj-3.4.3.jar /usr/bin/gij -Djava.version=1.4.2 -Djava.home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre "javacc"
Yes, you seem to be correct. Ant no longer works either. I'm not sure when this broke -- I track Raw Hide pretty closely -- but it did work before. I haven't been using Java for the last month or so.
I can't reproduce this on my ppc machine. Can you post the relevant lines in your yum.conf file so that I'm sure I've got the right package set?
I should be tracking Raw Hide only. I installed the javacc RPM from JPackage by hand. I just tried reinstalling Raw Hide's gcc-java-3.4.3-11.ppc.rpm and java-1.4.2-gcj-compat-1.4.2.0-21jpp.noarch.rpm by hand but that did not help. name=Fedora Core $releasever - Development Tree #baseurl=ftp://download.fedora.redhat.com/pub/fedora/linux/core/development/$basearch/ mirrorlist=http://fedora.redhat.com/download/mirrors/fedora-core-rawhide enabled=1
Nope, still can't reproduce this. I'm on a ppc64 machine; what does uname -a report for you?
[mike@imp ~]$ uname -a Linux imp.flyn.org 2.6.9-1.1021_FC4 #1 Wed Dec 8 18:45:11 EST 2004 ppc ppc ppc GNU/Linux My machine is a G4 iBook.
It looks like installing java-1.4.2-gcj-compat-devel-1.4.2.0-21jpp.noarch.rpm from Raw Hide fixes this. I didn't have this RPM installed when I reported this bug but I just installed it (I DID have ava-1.4.2-gcj-compat installed, though). Now javacc and ant work. Should java-1.4.2-gcj-compat-devel be required to execute Java bytecode? If so, why does the ant RPM not require it the package? Both java-1.4.2-gcj-compat and -devel install an identical program named java: [mike@imp src]$ rpm -ql java-1.4.2-gcj-compat | grep java$ /usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre/bin/java [mike@imp src]$ rpm -ql java-1.4.2-gcj-compat-devel | grep java$ /usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/bin/java [mike@imp src]$ diff /usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre/bin/java /usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/bin/java <no difference> Ant seems to execute using the one installed by the -devel package: [mike@imp src]$ ant exec "/usr/lib/jvm/java/bin/java" -classpath "/usr/share/java/ant.jar:/usr/share/java/ant-launcher.jar:/usr/share/java/jaxp_parser_impl.jar:/usr/share/java/xml-commons-apis.jar:/usr/share/java/junit.jar:/usr/share/java/ant/ant-junit.jar:/usr/lib/jvm/java/lib/tools.jar:/usr/share/java/ecj.jar" -Dant.home="/usr/share/ant" -Dant.library.dir="/usr/share/ant/lib" org.apache.tools.ant.launch.Launcher -lib "" [...]
Ah, OK. The -devel package contains the javac compiler. Ant BuildRequires java-devel, but doesn't Require it. It should though. Can you file a separate bug for this? And yes, two java files are installed, one by the base package and one by the -devel package. This is how proprietary SDKs are laid out, so we're just following them. Closing this report.
This still does not seem right. Granted, ant is probably going to need the -devel package to build programs. But it shouldn't need it to simply execute, right? I'm I wrong to think that only a JRE (aka java-1.4.2-gcj-compat) is needed for this? After I did some experimentation, I found that simply creating the empty directory /usr/lib/jvm-exports/java (which is actually a link installed by the -devel package) allows ant to execute without the -devel package installed. So I think that java-1.4.2-gcj-compat should install this directory instead of -devel. See this error: [mike@imp java-1.4.2-gcj-1.4.2.0]$ ant exec "/usr/bin/java" -classpath "/usr/bin/build-classpath: error: JVM_LIBDIR /usr/lib/jvm-exports/java does not exist or is not a directory:/usr/bin/build-classpath: error: JVM_LIBDIR /usr/lib/jvm-exports/java does not exist or is not a directory:/usr/share/java/ecj.jar" -Dant.home="/usr/share/ant" -Dant.library.dir="/usr/share/ant/lib" org.apache.tools.ant.launch.Launcher -lib "" Exception in thread "main" java.lang.NoClassDefFoundError: org.apache.tools.ant.launch.Launcher Javacc behaves the same. The wierd thing is that this link does not contain anything when it is installed by -devel: [mike@imp ~]$ ls -l /usr/lib/jvm-exports/java lrwxrwxrwx 1 root root 34 Jan 5 18:45 /usr/lib/jvm-exports/java -> /etc/alternatives/java_sdk_exports [mike@imp ~]$ ls -l /etc/alternatives/java_sdk_exports lrwxrwxrwx 1 root root 35 Jan 5 18:45 /etc/alternatives/java_sdk_exports -> /usr/lib/jvm-exports/java-1.4.2-gcj [mike@imp ~]$ ls -l /usr/lib/jvm-exports/java-1.4.2-gcj lrwxrwxrwx 1 root root 22 Jan 5 18:44 /usr/lib/jvm-exports/java-1.4.2-gcj -> java-1.4.2-gcj-1.4.2.0 [mike@imp ~]$ ls -l /usr/lib/jvm-exports/java-1.4.2-gcj-1.4.2.0 total 0 On a semi-related note, why is ecj used by java-1.4.2-gcj-compat-devel? Is ecj more complete than gcj?
Ant appears to require the -devel package to be installed, since it includes ecj.jar on the classpath. Where does this ecj.jar include come from? How is build-classpath being run? Maybe there's a bug there in that it assumes a JVM -devel package is installed. Instead of a set of jars, the classpath string contains build-classpath's error messages. We use ecj for javac because it is superior to gcj -C. It is faster, more correct and most importantly for this application, more command-line compatible with Sun's javac.
Not a gcj bug, AFAICS.
This is a bug in jpackage-utils; it assumes that JAVA_HOME is /usr/lib/jvm/java. But that symlink is installed by the -devel package. I'm working on a fix.
The problem was that jpackage-utils wouldn't fall back to look for $JVM_ROOT/jre when $JVM_ROOT/java didn't exist. Nicolas Mailhot wrote this patch, which fixes the issue: --- java-functions.orig 2005-01-14 23:12:24.000000000 +0100 +++ java-functions 2005-01-14 23:17:10.000000000 +0100 @@ -20,8 +20,14 @@ exit 1 fi +# Read user configuration file if it exists +[ -f ~/.java/java.conf ] && . ~/.java/java.conf + [ ! -z "$_JAVA_HOME" -a -d "$_JAVA_HOME" ] && JAVA_HOME="$_JAVA_HOME" +[ -z "$JAVA_HOME" -a -d "$JVM_ROOT/jre" ] && JAVA_HOME="$JVM_ROOT/jre" +[ -z "$JAVA_HOME" -a -d "$JVM_ROOT/java" ] && JAVA_HOME="$JVM_ROOT/java" + # Set the java virtual machine set_jvm() { # use $JAVA_HOME if defined This patch is included in jpackage-utils-1.6.2-1jpp_2rh which should hit rawhide soon. Can you retest and close this bug if it works?
Okay. Javacc will now execute without java-1.4.2-gcj-compat-devel installed. Thanks.