Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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1.0.2
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None
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None
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IBM Java 6
Description
src/contrib/fuse-dfs build failure when building in IBM Java 6 environment. The message on the console when the build aborts is:
[exec] /usr/bin/ld: cannot find -ljvm
[exec] collect2: ld returned 1 exit status
[exec] make[1]: *** [fuse_dfs] Error 1
[exec] make[1]: Leaving directory `/home/hadoop/branch-1.0_0427/src/contrib/fuse-dfs/src'
[exec] make: *** [all-recursive] Error 1
The reason this seems to be happening is because of the last line in src/contrib/fuse-dfs/src/Makefile.am
AM_LDFLAGS= -L$(HADOOP_HOME)/build/libhdfs -lhdfs -L$(FUSE_HOME)/lib -lfuse -L$(JAVA_HOME)/jre/lib/$(OS_ARCH)/server -ljvm
For hadoop to build on IBM Java, this last line should read as follows since this is where the libjvm library resides
AM_LDFLAGS= -L$(HADOOP_HOME)/build/libhdfs -lhdfs -L$(FUSE_HOME)/lib -lfuse -L$(JAVA_HOME)/jre/lib/$(OS_ARCH)/j9vm -ljvm
IMO, Changes like the following will need to be made to src/contrib/fuse-dfs/configure.ac 
to include changes similar to that in src/native/ to check for the appropriate JVM and configure the appropriate path for ljvm.
dnl Check for '-ljvm'
JNI_LDFLAGS=""
if test $JAVA_HOME != ""
then
JNI_LDFLAGS="-L$JAVA_HOME/jre/lib/$OS_ARCH/server"
JVMSOPATH=`find $JAVA_HOME/jre/ -name libjvm.so | head -n 1`
JNI_LDFLAGS="$JNI_LDFLAGS -L`dirname $JVMSOPATH`"
fi
ldflags_bak=$LDFLAGS
LDFLAGS="$LDFLAGS $JNI_LDFLAGS"
AC_CHECK_LIB([jvm], [JNI_GetCreatedJavaVMs])
LDFLAGS=$ldflags_bak
AC_SUBST([JNI_LDFLAGS])
- Checks for header files.
dnl Check for Ansi C headers
AC_HEADER_STDC
dnl Check for other standard C headers
AC_CHECK_HEADERS([stdio.h stddef.h], [], AC_MSG_ERROR(Some system headers not found... please ensure their presence on your platform.))
dnl Check for JNI headers
JNI_CPPFLAGS=""
if test $JAVA_HOME != ""
then
for dir in `find $JAVA_HOME/include -follow -type d`
do
JNI_CPPFLAGS="$JNI_CPPFLAGS -I$dir"
done
fi