MAPREDUCE-6407. Migrate MAPREDUCE native build to new CMake framework (Alan Burlison via Colin P. McCabe)

hadoop-mapreduce-project/CHANGES.txt

@@ -115,6 +115,9 @@ Trunk (Unreleased)
     MAPREDUCE-2632. Avoid calling the partitioner when the numReduceTasks is 1.
     (Ravi Teja Ch N V and Sunil G via kasha)
 
+    MAPREDUCE-6407. Migrate MAPREDUCE nativetask build to new CMake framework
+    (Alan Burlison via Colin P. McCabe)
+
   BUG FIXES
 
     MAPREDUCE-6191. Improve clearing stale state of Java serialization

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask/src/CMakeLists.txt

@@ -18,236 +18,170 @@
 
 cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
 
-# Default to release builds
-set(CMAKE_BUILD_TYPE, Release)
-
-include(JNIFlags.cmake NO_POLICY_SCOPE)
-
-# Compile a library with both shared and static variants
-function(add_dual_library LIBNAME)
-    add_library(${LIBNAME} SHARED ${ARGN})
-    add_library(${LIBNAME}_static STATIC ${ARGN})
-    set_target_properties(${LIBNAME}_static PROPERTIES OUTPUT_NAME ${LIBNAME})
-endfunction(add_dual_library)
-
-# Link both a static and a dynamic target against some libraries
-function(target_link_dual_libraries LIBNAME)
-    target_link_libraries(${LIBNAME} ${ARGN})
-    target_link_libraries(${LIBNAME}_static ${ARGN})
-endfunction(target_link_dual_libraries)
-
-function(output_directory TGT DIR)
-    SET_TARGET_PROPERTIES(${TGT} PROPERTIES
-        RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/${DIR}")
-    SET_TARGET_PROPERTIES(${TGT} PROPERTIES
-        ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/${DIR}")
-    SET_TARGET_PROPERTIES(${TGT} PROPERTIES
-        LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/${DIR}")
-endfunction(output_directory TGT DIR)
-
-function(dual_output_directory TGT DIR)
-    output_directory(${TGT} "${DIR}")
-    output_directory(${TGT}_static "${DIR}")
-endfunction(dual_output_directory TGT DIR)
-
-#
-# This macro alters the behavior of find_package and find_library.
-# It does this by setting the CMAKE_FIND_LIBRARY_SUFFIXES global variable.
-# You should save that variable before calling this function and restore it
-# after you have accomplished your goal.
-#
-# The behavior is altered in two ways:
-# 1. We always find shared libraries, never static;
-# 2. We find shared libraries with the given version number.
-#
-# On Windows this function is a no-op.  Windows does not encode
-# version number information information into library path names.
-#
-macro(set_find_shared_library_version LVERS)
-    IF(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-        # Mac OS uses .dylib
-        SET(CMAKE_FIND_LIBRARY_SUFFIXES ".${LVERS}.dylib")
-    ELSEIF(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
-        # FreeBSD has always .so installed.
-        SET(CMAKE_FIND_LIBRARY_SUFFIXES ".so")
-    ELSEIF(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
-        # Windows doesn't support finding shared libraries by version.
-    ELSE()
-        # Most UNIX variants use .so
-        SET(CMAKE_FIND_LIBRARY_SUFFIXES ".so.${LVERS}")
-    ENDIF()
-endmacro(set_find_shared_library_version LVERS)
-
-if (NOT GENERATED_JAVAH)
-    #Must identify where the generated headers have been placed
-    MESSAGE(FATAL_ERROR "You must set the cmake variable GENERATED_JAVAH")
-endif (NOT GENERATED_JAVAH)
-find_package(JNI REQUIRED)
-
-SET(STORED_CMAKE_FIND_LIBRARY_SUFFIXES CMAKE_FIND_LIBRARY_SUFFIXES)
-set_find_shared_library_version("1")
-SET(CMAKE_FIND_LIBRARY_SUFFIXES STORED_CMAKE_FIND_LIBRARY_SUFFIXES)
-
-# primitive configs
-set(PRFLAGS "-DSIMPLE_MEMCPY")
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${PRFLAGS} -fno-strict-aliasing -Wall -Wno-sign-compare")
-set(CMAKE_LD_FLAGS "${CMAKE_LD_FLAGS} -no-undefined -version-info 0:1:0
-    -L${_JAVA_HOME}/jre/lib/amd64/server -ljvm")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS} -g -O2 -DNDEBUG -fPIC")
-set(D main/native/)
-
-SET(STORED_CMAKE_FIND_LIBRARY_SUFFIXES CMAKE_FIND_LIBRARY_SUFFIXES)
-set_find_shared_library_version("1")
-SET(CMAKE_FIND_LIBRARY_SUFFIXES STORED_CMAKE_FIND_LIBRARY_SUFFIXES)
-
-INCLUDE(CheckFunctionExists)
-INCLUDE(CheckCSourceCompiles)
-#INCLUDE(CheckLibraryExists)
-INCLUDE(CheckIncludeFiles)
-#CHECK_FUNCTION_EXISTS(sync_file_range HAVE_SYNC_FILE_RANGE)
-#CHECK_FUNCTION_EXISTS(posix_fadvise HAVE_POSIX_FADVISE)
-#CHECK_LIBRARY_EXISTS(dl dlopen "" NEED_LINK_DL)
-CHECK_INCLUDE_FILES(fcntl.h HAVE_FCNTL_H)
-CHECK_INCLUDE_FILES(malloc.h HAVE_MALLOC_H)
-CHECK_INCLUDE_FILES(mach/mach.h HAVE_MACH_MACH_H)
-CHECK_INCLUDE_FILES(memory.h HAVE_MEMORY_H)
-CHECK_INCLUDE_FILES(stddef.h HAVE_STDDEF_H)
-CHECK_INCLUDE_FILES(stdint.h HAVE_STDINT_H)
-CHECK_INCLUDE_FILES(stdlib.h HAVE_STDLIB_H)
-CHECK_INCLUDE_FILES(string.h HAVE_STRING_H)
-CHECK_INCLUDE_FILES(unistd.h HAVE_UNITSTD_H)
-CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
-CHECK_FUNCTION_EXISTS(localtime_r HAVE_LOCALTIME_R)
-CHECK_FUNCTION_EXISTS(memset HAVE_MEMSET)
-CHECK_FUNCTION_EXISTS(strchr HAVE_STRCHR)
-CHECK_FUNCTION_EXISTS(strtoul HAVE_STRTOUL)
-
-SET(STORED_CMAKE_FIND_LIBRARY_SUFFIXES CMAKE_FIND_LIBRARY_SUFFIXES)
-set_find_shared_library_version("1")
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/../../../../hadoop-common-project/hadoop-common/)
+include(HadoopCommon)
+
+# Add extra compiler and linker flags.
+# -Wno-sign-compare
+hadoop_add_compiler_flags("-DNDEBUG -DSIMPLE_MEMCPY -fno-strict-aliasing")
+
+# Source location.
+set(SRC main/native)
+
+# The caller must specify where the generated headers have been placed.
+if(NOT GENERATED_JAVAH)
+    message(FATAL_ERROR "You must set the CMake variable GENERATED_JAVAH")
+endif()
+
+# Configure JNI.
+include(HadoopJNI)
+
+# Probe for headers and functions.
+include(CheckFunctionExists)
+include(CheckIncludeFiles)
+
+check_include_files(fcntl.h HAVE_FCNTL_H)
+check_include_files(malloc.h HAVE_MALLOC_H)
+check_include_files(mach/mach.h HAVE_MACH_MACH_H)
+check_include_files(memory.h HAVE_MEMORY_H)
+check_include_files(stddef.h HAVE_STDDEF_H)
+check_include_files(stdint.h HAVE_STDINT_H)
+check_include_files(stdlib.h HAVE_STDLIB_H)
+Check_include_files(string.h HAVE_STRING_H)
+check_include_files(unistd.h HAVE_UNITSTD_H)
+check_function_exists(clock_gettime HAVE_CLOCK_GETTIME)
+check_function_exists(localtime_r HAVE_LOCALTIME_R)
+check_function_exists(memset HAVE_MEMSET)
+check_function_exists(strchr HAVE_STRCHR)
+check_function_exists(strtoul HAVE_STRTOUL)
+
+# Require snappy.
+set(STORED_CMAKE_FIND_LIBRARY_SUFFIXES CMAKE_FIND_LIBRARY_SUFFIXES)
+hadoop_set_find_shared_library_version("1")
 find_library(SNAPPY_LIBRARY
     NAMES snappy
     PATHS ${CUSTOM_SNAPPY_PREFIX} ${CUSTOM_SNAPPY_PREFIX}/lib
           ${CUSTOM_SNAPPY_PREFIX}/lib64 ${CUSTOM_SNAPPY_LIB})
-SET(CMAKE_FIND_LIBRARY_SUFFIXES STORED_CMAKE_FIND_LIBRARY_SUFFIXES)
+set(CMAKE_FIND_LIBRARY_SUFFIXES STORED_CMAKE_FIND_LIBRARY_SUFFIXES)
 find_path(SNAPPY_INCLUDE_DIR
     NAMES snappy.h
     PATHS ${CUSTOM_SNAPPY_PREFIX} ${CUSTOM_SNAPPY_PREFIX}/include
           ${CUSTOM_SNAPPY_INCLUDE})
-if (SNAPPY_LIBRARY AND SNAPPY_INCLUDE_DIR)
+if(SNAPPY_LIBRARY AND SNAPPY_INCLUDE_DIR)
     GET_FILENAME_COMPONENT(HADOOP_SNAPPY_LIBRARY ${SNAPPY_LIBRARY} NAME)
     set(SNAPPY_SOURCE_FILES
-        "${D}/src/codec/SnappyCodec.cc")
-else (SNAPPY_LIBRARY AND SNAPPY_INCLUDE_DIR)
+        "${SRC}/src/codec/SnappyCodec.cc")
+    set(REQUIRE_SNAPPY ${REQUIRE_SNAPPY}) # Stop warning about unused variable.
+    message(STATUS "Found Snappy: ${SNAPPY_LIBRARY}")
+else()
     set(SNAPPY_LIBRARY "")
     set(SNAPPY_INCLUDE_DIR "")
     set(SNAPPY_SOURCE_FILES "")
-    IF(REQUIRE_SNAPPY)
-        MESSAGE(FATAL_ERROR "Required snappy library could not be found.  SNAPPY_LIBRARY=${SNAPPY_LIBRARY}, SNAPPY_INCLUDE_DIR=${SNAPPY_INCLUDE_DIR}, CUSTOM_SNAPPY_INCLUDE_DIR=${CUSTOM_SNAPPY_INCLUDE_DIR}, CUSTOM_SNAPPY_PREFIX=${CUSTOM_SNAPPY_PREFIX}, CUSTOM_SNAPPY_INCLUDE=${CUSTOM_SNAPPY_INCLUDE}")
-    ENDIF(REQUIRE_SNAPPY)
-endif (SNAPPY_LIBRARY AND SNAPPY_INCLUDE_DIR)
+    if(REQUIRE_SNAPPY)
+        message(FATAL_ERROR "Required snappy library could not be found.  SNAPPY_LIBRARY=${SNAPPY_LIBRARY}, SNAPPY_INCLUDE_DIR=${SNAPPY_INCLUDE_DIR}, CUSTOM_SNAPPY_INCLUDE_DIR=${CUSTOM_SNAPPY_INCLUDE_DIR}, CUSTOM_SNAPPY_PREFIX=${CUSTOM_SNAPPY_PREFIX}, CUSTOM_SNAPPY_INCLUDE=${CUSTOM_SNAPPY_INCLUDE}")
+    endif()
+endif()
 
-CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/config.h.cmake ${CMAKE_BINARY_DIR}/config.h)
+configure_file(${CMAKE_SOURCE_DIR}/config.h.cmake ${CMAKE_BINARY_DIR}/config.h)
 
 include_directories(
     ${GENERATED_JAVAH}
-    ${D}/src
-    ${D}/src/util
-    ${D}/src/lib
-    ${D}/test
+    ${SRC}/src
+    ${SRC}/src/util
+    ${SRC}/src/lib
+    ${SRC}/test
     ${CMAKE_CURRENT_SOURCE_DIR}
     ${CMAKE_BINARY_DIR}
     ${JNI_INCLUDE_DIRS}
     ${SNAPPY_INCLUDE_DIR}
 )
 # add gtest as system library to suppress gcc warnings
-include_directories(SYSTEM ${D}/gtest/include)
-
+include_directories(SYSTEM ${SRC}/gtest/include)
 
-SET(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
+set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
 
-if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
     # macosx does not have -lrt
     set(NT_DEPEND_LIBRARY dl pthread z ${SNAPPY_LIBRARY} ${JAVA_JVM_LIBRARY})
     set(SYSTEM_MAC TRUE)
-else (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+else()
     set(NT_DEPEND_LIBRARY dl rt pthread z ${SNAPPY_LIBRARY} ${JAVA_JVM_LIBRARY})
     set(SYSTEM_MAC FALSE)
-endif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+endif()
 
 configure_file(main/native/test.sh test/test.sh)
 
-add_dual_library(nativetask
+hadoop_add_dual_library(nativetask
     ${CMAKE_BINARY_DIR}/lz4.c
-    ${D}/src/codec/BlockCodec.cc
-    ${D}/src/codec/GzipCodec.cc
-    ${D}/src/codec/Lz4Codec.cc
+    ${SRC}/src/codec/BlockCodec.cc
+    ${SRC}/src/codec/GzipCodec.cc
+    ${SRC}/src/codec/Lz4Codec.cc
     ${SNAPPY_SOURCE_FILES}
-    ${D}/src/handler/BatchHandler.cc
-    ${D}/src/handler/MCollectorOutputHandler.cc
-    ${D}/src/handler/AbstractMapHandler.cc
-    ${D}/src/handler/CombineHandler.cc
-    ${D}/src/lib/Buffers.cc
-    ${D}/src/lib/BufferStream.cc
-    ${D}/src/lib/Compressions.cc
-    ${D}/src/lib/PartitionBucket.cc
-    ${D}/src/lib/PartitionBucketIterator.cc
-    ${D}/src/lib/FileSystem.cc
-    ${D}/src/lib/IFile.cc
-    ${D}/src/lib/jniutils.cc
-    ${D}/src/lib/Log.cc
-    ${D}/src/lib/MapOutputCollector.cc
-    ${D}/src/lib/MapOutputSpec.cc
-    ${D}/src/lib/MemoryBlock.cc
-    ${D}/src/lib/Merge.cc
-    ${D}/src/lib/NativeLibrary.cc
-    ${D}/src/lib/Iterator.cc
-    ${D}/src/lib/NativeObjectFactory.cc
-    ${D}/src/lib/NativeRuntimeJniImpl.cc
-    ${D}/src/lib/NativeTask.cc
-    ${D}/src/lib/SpillInfo.cc
-    ${D}/src/lib/Path.cc
-    ${D}/src/lib/Streams.cc
-    ${D}/src/lib/TaskCounters.cc
-    ${D}/src/util/Checksum.cc
-    ${D}/src/util/Random.cc
-    ${D}/src/util/StringUtil.cc
-    ${D}/src/util/SyncUtils.cc
-    ${D}/src/util/Timer.cc
-    ${D}/src/util/WritableUtils.cc
+    ${SRC}/src/handler/BatchHandler.cc
+    ${SRC}/src/handler/MCollectorOutputHandler.cc
+    ${SRC}/src/handler/AbstractMapHandler.cc
+    ${SRC}/src/handler/CombineHandler.cc
+    ${SRC}/src/lib/Buffers.cc
+    ${SRC}/src/lib/BufferStream.cc
+    ${SRC}/src/lib/Compressions.cc
+    ${SRC}/src/lib/PartitionBucket.cc
+    ${SRC}/src/lib/PartitionBucketIterator.cc
+    ${SRC}/src/lib/FileSystem.cc
+    ${SRC}/src/lib/IFile.cc
+    ${SRC}/src/lib/jniutils.cc
+    ${SRC}/src/lib/Log.cc
+    ${SRC}/src/lib/MapOutputCollector.cc
+    ${SRC}/src/lib/MapOutputSpec.cc
+    ${SRC}/src/lib/MemoryBlock.cc
+    ${SRC}/src/lib/Merge.cc
+    ${SRC}/src/lib/NativeLibrary.cc
+    ${SRC}/src/lib/Iterator.cc
+    ${SRC}/src/lib/NativeObjectFactory.cc
+    ${SRC}/src/lib/NativeRuntimeJniImpl.cc
+    ${SRC}/src/lib/NativeTask.cc
+    ${SRC}/src/lib/SpillInfo.cc
+    ${SRC}/src/lib/Path.cc
+    ${SRC}/src/lib/Streams.cc
+    ${SRC}/src/lib/TaskCounters.cc
+    ${SRC}/src/util/Checksum.cc
+    ${SRC}/src/util/Random.cc
+    ${SRC}/src/util/StringUtil.cc
+    ${SRC}/src/util/SyncUtils.cc
+    ${SRC}/src/util/Timer.cc
+    ${SRC}/src/util/WritableUtils.cc
 )
 
 target_link_libraries(nativetask ${NT_DEPEND_LIBRARY})
 
-add_library(gtest ${D}/gtest/gtest-all.cc)
+add_library(gtest ${SRC}/gtest/gtest-all.cc)
 set_target_properties(gtest PROPERTIES COMPILE_FLAGS "-w")
 add_executable(nttest
-    ${D}/test/lib/TestByteArray.cc
-    ${D}/test/lib/TestByteBuffer.cc
-    ${D}/test/lib/TestComparatorForDualPivotQuickSort.cc
-    ${D}/test/lib/TestComparatorForStdSort.cc
-    ${D}/test/lib/TestFixSizeContainer.cc
-    ${D}/test/lib/TestMemoryPool.cc
-    ${D}/test/lib/TestIterator.cc
-    ${D}/test/lib/TestKVBuffer.cc
-    ${D}/test/lib/TestMemBlockIterator.cc
-    ${D}/test/lib/TestMemoryBlock.cc
-    ${D}/test/lib/TestPartitionBucket.cc
-    ${D}/test/lib/TestReadBuffer.cc
-    ${D}/test/lib/TestReadWriteBuffer.cc
-    ${D}/test/util/TestChecksum.cc
-    ${D}/test/util/TestStringUtil.cc
-    ${D}/test/util/TestWritableUtils.cc
-    ${D}/test/TestCommand.cc
-    ${D}/test/TestConfig.cc
-    ${D}/test/TestCounter.cc
-    ${D}/test/TestCompressions.cc
-    ${D}/test/TestFileSystem.cc
-    ${D}/test/TestIFile.cc
-    ${D}/test/TestPrimitives.cc
-    ${D}/test/TestSort.cc
-    ${D}/test/TestMain.cc
-    ${D}/test/test_commons.cc)
-
+    ${SRC}/test/lib/TestByteArray.cc
+    ${SRC}/test/lib/TestByteBuffer.cc
+    ${SRC}/test/lib/TestComparatorForDualPivotQuickSort.cc
+    ${SRC}/test/lib/TestComparatorForStdSort.cc
+    ${SRC}/test/lib/TestFixSizeContainer.cc
+    ${SRC}/test/lib/TestMemoryPool.cc
+    ${SRC}/test/lib/TestIterator.cc
+    ${SRC}/test/lib/TestKVBuffer.cc
+    ${SRC}/test/lib/TestMemBlockIterator.cc
+    ${SRC}/test/lib/TestMemoryBlock.cc
+    ${SRC}/test/lib/TestPartitionBucket.cc
+    ${SRC}/test/lib/TestReadBuffer.cc
+    ${SRC}/test/lib/TestReadWriteBuffer.cc
+    ${SRC}/test/util/TestChecksum.cc
+    ${SRC}/test/util/TestStringUtil.cc
+    ${SRC}/test/util/TestWritableUtils.cc
+    ${SRC}/test/TestCommand.cc
+    ${SRC}/test/TestConfig.cc
+    ${SRC}/test/TestCounter.cc
+    ${SRC}/test/TestCompressions.cc
+    ${SRC}/test/TestFileSystem.cc
+    ${SRC}/test/TestIFile.cc
+    ${SRC}/test/TestPrimitives.cc
+    ${SRC}/test/TestSort.cc
+    ${SRC}/test/TestMain.cc
+    ${SRC}/test/test_commons.cc)
 
 target_link_libraries(nttest
      nativetask_static
@@ -255,17 +189,14 @@ target_link_libraries(nttest
      ${NT_DEPEND_LIBRARY}
 )
 
-IF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
-    #
-    # By embedding '$ORIGIN' into the RPATH of libnativetask.so,
-    # dlopen will look in the directory containing libnativetask.so.
-    # However, $ORIGIN is not supported by all operating systems.
-    #
-    SET_TARGET_PROPERTIES(nativetask
-        PROPERTIES INSTALL_RPATH "\$ORIGIN/")
-ENDIF()
-
-SET(LIBNATIVETASK_VERSION "1.0.0")
-SET_TARGET_PROPERTIES(nativetask PROPERTIES SOVERSION ${LIBNATIVETASK_VERSION})
-dual_output_directory(nativetask target/usr/local/lib)
-output_directory(nttest test)
+# By embedding '$ORIGIN' into the RPATH of libnativetask.so, dlopen will look in
+# the directory containing libnativetask.so. However, $ORIGIN is not supported by
+# all operating systems.
+if(CMAKE_SYSTEM_NAME MATCHES "Linux|SunOS")
+    set_target_properties(nativetask PROPERTIES INSTALL_RPATH "\$ORIGIN/")
+endif()
+
+set(LIBNATIVETASK_VERSION "1.0.0")
+set_target_properties(nativetask PROPERTIES SOVERSION ${LIBNATIVETASK_VERSION})
+hadoop_dual_output_directory(nativetask target/usr/local/lib)
+hadoop_output_directory(nttest test)

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask/src/JNIFlags.cmake

@@ -1,118 +0,0 @@
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
-
-# 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)
-
-# Determine float ABI of JVM on ARM Linux
-if (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
-    find_program(READELF readelf)
-    if (READELF MATCHES "NOTFOUND")
-        message(WARNING "readelf not found; JVM float ABI detection disabled")
-    else (READELF MATCHES "NOTFOUND")
-        execute_process(
-            COMMAND ${READELF} -A ${JAVA_JVM_LIBRARY}
-            OUTPUT_VARIABLE JVM_ELF_ARCH
-            ERROR_QUIET)
-        if (NOT JVM_ELF_ARCH MATCHES "Tag_ABI_VFP_args: VFP registers")
-            message("Soft-float JVM detected")
-
-            # Test compilation with -mfloat-abi=softfp using an arbitrary libc function
-            # (typically fails with "fatal error: bits/predefs.h: No such file or directory"
-            # if soft-float dev libraries are not installed)
-            include(CMakePushCheckState)
-            cmake_push_check_state()
-            set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mfloat-abi=softfp")
-            include(CheckSymbolExists)
-            check_symbol_exists(exit stdlib.h SOFTFP_AVAILABLE)
-            if (NOT SOFTFP_AVAILABLE)
-                message(FATAL_ERROR "Soft-float dev libraries required (e.g. 'apt-get install libc6-dev-armel' on Debian/Ubuntu)")
-            endif (NOT SOFTFP_AVAILABLE)
-            cmake_pop_check_state()
-
-            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfloat-abi=softfp")
-        endif ()
-    endif (READELF MATCHES "NOTFOUND")
-endif (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
-
-IF("${CMAKE_SYSTEM}" MATCHES "Linux")
-    #
-    # Locate JNI_INCLUDE_DIRS and JNI_LIBRARIES.
-    # Since we were invoked from Maven, we know that the JAVA_HOME environment
-    # variable is valid.  So we ignore system paths here and just use JAVA_HOME.
-    #
-    FILE(TO_CMAKE_PATH "$ENV{JAVA_HOME}" _JAVA_HOME)
-    IF(CMAKE_SYSTEM_PROCESSOR MATCHES "^i.86$")
-        SET(_java_libarch "i386")
-    ELSEIF (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64")
-        SET(_java_libarch "amd64")
-    ELSEIF (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
-        SET(_java_libarch "arm")
-    ELSE()
-        SET(_java_libarch ${CMAKE_SYSTEM_PROCESSOR})
-    ENDIF()
-    SET(_JDK_DIRS "${_JAVA_HOME}/jre/lib/${_java_libarch}/*"
-                  "${_JAVA_HOME}/jre/lib/${_java_libarch}"
-                  "${_JAVA_HOME}/jre/lib/*"
-                  "${_JAVA_HOME}/jre/lib"
-                  "${_JAVA_HOME}/lib/*"
-                  "${_JAVA_HOME}/lib"
-                  "${_JAVA_HOME}/include/*"
-                  "${_JAVA_HOME}/include"
-                  "${_JAVA_HOME}"
-    )
-    FIND_PATH(JAVA_INCLUDE_PATH
-        NAMES jni.h 
-        PATHS ${_JDK_DIRS}
-        NO_DEFAULT_PATH)
-    #In IBM java, it's jniport.h instead of jni_md.h
-    FIND_PATH(JAVA_INCLUDE_PATH2 
-        NAMES jni_md.h jniport.h
-        PATHS ${_JDK_DIRS}
-        NO_DEFAULT_PATH)
-    SET(JNI_INCLUDE_DIRS ${JAVA_INCLUDE_PATH} ${JAVA_INCLUDE_PATH2})
-    FIND_LIBRARY(JAVA_JVM_LIBRARY
-        NAMES rt jvm 
-        PATHS ${_JDK_DIRS}
-        NO_DEFAULT_PATH)
-    SET(JNI_LIBRARIES ${JAVA_JVM_LIBRARY})
-    MESSAGE("JAVA_HOME=${JAVA_HOME}, JAVA_JVM_LIBRARY=${JAVA_JVM_LIBRARY}")
-    MESSAGE("JAVA_INCLUDE_PATH=${JAVA_INCLUDE_PATH}, JAVA_INCLUDE_PATH2=${JAVA_INCLUDE_PATH2}")
-    IF(JAVA_JVM_LIBRARY AND JAVA_INCLUDE_PATH AND JAVA_INCLUDE_PATH2)
-        MESSAGE("Located all JNI components successfully.")
-    ELSE()
-        MESSAGE(FATAL_ERROR "Failed to find a viable JVM installation under JAVA_HOME.")
-    ENDIF()
-ELSE()
-    find_package(JNI REQUIRED)
-ENDIF()