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https://issues.apache.org/jira/browse/HADOOP-11975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14550800#comment-14550800
]
Colin Patrick McCabe commented on HADOOP-11975:
-----------------------------------------------
This should be handled by {{JNIFlags.cmake}}.
{code}
# If JVM_ARCH_DATA_MODEL is 32, compile all binaries as 32-bit.
# This variable is set by maven.
if (JVM_ARCH_DATA_MODEL EQUAL 32)
# Force 32-bit code generation on amd64/x86_64, ppc64, sparc64
if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_SYSTEM_PROCESSOR MATCHES ".*64")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32")
set(CMAKE_LD_FLAGS "${CMAKE_LD_FLAGS} -m32")
endif ()
if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR CMAKE_SYSTEM_PROCESSOR
STREQUAL "amd64")
# Set CMAKE_SYSTEM_PROCESSOR to ensure that find_package(JNI) will use
# the 32-bit version of libjvm.so.
set(CMAKE_SYSTEM_PROCESSOR "i686")
endif ()
endif (JVM_ARCH_DATA_MODEL EQUAL 32)
{code}
You should investigate why this is not working for you. Perhaps your
architecture is not x86? Or perhaps your JVM is not setting
{{JVM_ARCH_DATA_MODEL}}?
> Native code needs to be built to match the 32/64 bitness of the JVM
> -------------------------------------------------------------------
>
> Key: HADOOP-11975
> URL: https://issues.apache.org/jira/browse/HADOOP-11975
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: build
> Affects Versions: 2.7.0
> Environment: Solaris
> Reporter: Alan Burlison
> Assignee: Alan Burlison
>
> When building with a 64-bit JVM on Solaris the following error occurs at the
> link stage of building the native code:
> [exec] ld: fatal: file
> /usr/jdk/instances/jdk1.8.0/jre/lib/amd64/server/libjvm.so: wrong ELF class:
> ELFCLASS64
> [exec] collect2: error: ld returned 1 exit status
> [exec] make[2]: *** [target/usr/local/lib/libhadoop.so.1.0.0] Error 1
> [exec] make[1]: *** [CMakeFiles/hadoop.dir/all] Error 2
> The compilation flags in the makefiles need to explicitly state if 32 or 64
> bit code is to be generated, to match the JVM.
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