hadoop-common-project/hadoop-common/HadoopCommon.cmake - hadoop - Git at Google

 #
 # 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.
 #

 #
 # Common CMake utilities and configuration, shared by all Native components.
 #

 #
 # Platform-specific prerequisite checks.
 #

 if(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
     # Only 64-bit Java is supported.
     if(NOT JVM_ARCH_DATA_MODEL EQUAL 64)
         message(FATAL_ERROR "Unrecognised JVM_ARCH_DATA_MODEL '${JVM_ARCH_DATA_MODEL}'. "
           "A 64-bit JVM must be used on Solaris, make sure that one is installed and, "
           "if necessary, the MAVEN_OPTS environment variable includes '-d64'")
     endif()

     # Only gcc is suported for now.
     if(NOT(CMAKE_COMPILER_IS_GNUCC AND CMAKE_COMPILER_IS_GNUCXX))
         message(FATAL_ERROR "Only gcc is supported on Solaris")
     endif()
 endif()

 #
 # Helper functions and macros.
 #

 # Add flags to all the CMake compiler variables
 macro(hadoop_add_compiler_flags FLAGS)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAGS}")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAGS}")
 endmacro()

 # Add flags to all the CMake linker variables.
 macro(hadoop_add_linker_flags FLAGS)
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${FLAGS}")
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${FLAGS}")
 endmacro()

 # Compile a library with both shared and static variants.
 function(hadoop_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()

 # Link both a static and a dynamic target against some libraries.
 function(hadoop_target_link_dual_libraries LIBNAME)
     target_link_libraries(${LIBNAME} ${ARGN})
     target_link_libraries(${LIBNAME}_static ${ARGN})
 endfunction()

 # Set all the output directories to the same place.
 function(hadoop_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()

 # Set the target directories for dynamic and static builds.
 function(hadoop_dual_output_directory TGT DIR)
     hadoop_output_directory(${TGT} "${DIR}")
     hadoop_output_directory(${TGT}_static "${DIR}")
 endfunction()

 # Alter the behavior of find_package and find_library so that we find only
 # shared libraries with a given version suffix.  You should save
 # CMAKE_FIND_LIBRARY_SUFFIXES before calling this function and restore it
 # afterwards.  On Windows this function is a no-op.  Windows does not encode
 # version number information information into library path names.
 macro(hadoop_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()

 # Alter the behavior of find_package and find_library so that we find only
 # shared libraries without any version suffix.  You should save
 # CMAKE_FIND_LIBRARY_SUFFIXES before calling this function and restore it
 # afterwards. On Windows this function is a no-op.  Windows does not encode
 # version number information information into library path names.
 macro(hadoop_set_find_shared_library_without_version)
     if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
         # Mac OS uses .dylib
         set(CMAKE_FIND_LIBRARY_SUFFIXES ".dylib")
     elseif(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
         # No effect
     else()
         # Most UNIX variants use .so
         set(CMAKE_FIND_LIBRARY_SUFFIXES ".so")
     endif()
 endmacro()


 # set the shared compiler flags
 # support for GNU C/C++, add other compilers as necessary

 if (CMAKE_C_COMPILER_ID STREQUAL "GNU" OR
     CMAKE_C_COMPILER_ID STREQUAL "Clang" OR
     CMAKE_C_COMPILER_ID STREQUAL "AppleClang")
   if(NOT DEFINED GCC_SHARED_FLAGS)
     find_package(Threads REQUIRED)
     if(CMAKE_USE_PTHREADS_INIT)
       set(GCC_SHARED_FLAGS "-g -O2 -Wall -pthread -D_FILE_OFFSET_BITS=64")
     else()
       set(GCC_SHARED_FLAGS "-g -O2 -Wall -D_FILE_OFFSET_BITS=64")
     endif()
   endif()
 endif()

 # Set the shared linker flags.
 hadoop_add_compiler_flags("${GCC_SHARED_FLAGS}")
 hadoop_add_linker_flags("${LINKER_SHARED_FLAGS}")

 #
 # Linux-specific configuration.
 #
 if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
     # Make GNU extensions available.
     hadoop_add_compiler_flags("-D_GNU_SOURCE")

     # If JVM_ARCH_DATA_MODEL is 32, compile all binaries as 32-bit.
     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")
             hadoop_add_compiler_flags("-m32")
             hadoop_add_linker_flags("-m32")
         endif()
         # Set CMAKE_SYSTEM_PROCESSOR to ensure that find_package(JNI) will use 32-bit libraries
         if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64")
             set(CMAKE_SYSTEM_PROCESSOR "i686")
         endif()
     endif()

     # Determine float ABI of JVM on ARM.
     if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
         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 ${JAVA_JVM_LIBRARY}
                 OUTPUT_VARIABLE JVM_ELF_ARCH
                 ERROR_QUIET)
             if(NOT JVM_ELF_ARCH MATCHES "Tag_ABI_VFP_args: VFP registers")
                 # Test compilation with -mfloat-abi=softfp using an arbitrary libc function
                 # (typically fails with "fatal error: bits/predefs.h: No such file or directory"
                 # if soft-float dev libraries are not installed)
                 message("Soft-float JVM detected")
                 include(CMakePushCheckState)
                 cmake_push_check_state()
                 set(CMAKE_REQUIRED_FLAGS "${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()
                 cmake_pop_check_state()
                 hadoop_add_compiler_flags("-mfloat-abi=softfp")
             endif()
         endif()
     endif()

 #
 # Solaris-specific configuration.
 #
 elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
     # Solaris flags. 64-bit compilation is mandatory, and is checked earlier.
     hadoop_add_compiler_flags("-m64 -D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS")
     set(CMAKE_C_FLAGS "-std=gnu99 ${CMAKE_C_FLAGS}")
     set(CMAKE_CXX_FLAGS "-std=gnu++98 ${CMAKE_CXX_FLAGS}")
     hadoop_add_linker_flags("-m64")

     # CMAKE_SYSTEM_PROCESSOR is set to the output of 'uname -p', which on Solaris is
     # the 'lowest' ISA supported, i.e. 'i386' or 'sparc'. However in order for the
     # standard CMake modules to look in the right places it needs to reflect the required
     # compilation mode, i.e. 64 bit. We therefore force it to either 'amd64' or 'sparcv9'.
     if(CMAKE_SYSTEM_PROCESSOR STREQUAL "i386")
         set(CMAKE_SYSTEM_PROCESSOR "amd64")
         set(CMAKE_LIBRARY_ARCHITECTURE "amd64")
     elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "sparc")
         set(CMAKE_SYSTEM_PROCESSOR "sparcv9")
         set(CMAKE_LIBRARY_ARCHITECTURE "sparcv9")
     else()
         message(FATAL_ERROR "Unrecognised CMAKE_SYSTEM_PROCESSOR ${CMAKE_SYSTEM_PROCESSOR}")
     endif()
 endif()
	#
	# 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.
	#

	#
	# Common CMake utilities and configuration, shared by all Native components.
	#

	#
	# Platform-specific prerequisite checks.
	#

	if(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
	# Only 64-bit Java is supported.
	if(NOT JVM_ARCH_DATA_MODEL EQUAL 64)
	message(FATAL_ERROR "Unrecognised JVM_ARCH_DATA_MODEL '${JVM_ARCH_DATA_MODEL}'. "
	"A 64-bit JVM must be used on Solaris, make sure that one is installed and, "
	"if necessary, the MAVEN_OPTS environment variable includes '-d64'")
	endif()

	# Only gcc is suported for now.
	if(NOT(CMAKE_COMPILER_IS_GNUCC AND CMAKE_COMPILER_IS_GNUCXX))
	message(FATAL_ERROR "Only gcc is supported on Solaris")
	endif()
	endif()

	#
	# Helper functions and macros.
	#

	# Add flags to all the CMake compiler variables
	macro(hadoop_add_compiler_flags FLAGS)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAGS}")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAGS}")
	endmacro()

	# Add flags to all the CMake linker variables.
	macro(hadoop_add_linker_flags FLAGS)
	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${FLAGS}")
	set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${FLAGS}")
	endmacro()

	# Compile a library with both shared and static variants.
	function(hadoop_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()

	# Link both a static and a dynamic target against some libraries.
	function(hadoop_target_link_dual_libraries LIBNAME)
	target_link_libraries(${LIBNAME} ${ARGN})
	target_link_libraries(${LIBNAME}_static ${ARGN})
	endfunction()

	# Set all the output directories to the same place.
	function(hadoop_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()

	# Set the target directories for dynamic and static builds.
	function(hadoop_dual_output_directory TGT DIR)
	hadoop_output_directory(${TGT} "${DIR}")
	hadoop_output_directory(${TGT}_static "${DIR}")
	endfunction()

	# Alter the behavior of find_package and find_library so that we find only
	# shared libraries with a given version suffix. You should save
	# CMAKE_FIND_LIBRARY_SUFFIXES before calling this function and restore it
	# afterwards. On Windows this function is a no-op. Windows does not encode
	# version number information information into library path names.
	macro(hadoop_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()

	# Alter the behavior of find_package and find_library so that we find only
	# shared libraries without any version suffix. You should save
	# CMAKE_FIND_LIBRARY_SUFFIXES before calling this function and restore it
	# afterwards. On Windows this function is a no-op. Windows does not encode
	# version number information information into library path names.
	macro(hadoop_set_find_shared_library_without_version)
	if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
	# Mac OS uses .dylib
	set(CMAKE_FIND_LIBRARY_SUFFIXES ".dylib")
	elseif(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
	# No effect
	else()
	# Most UNIX variants use .so
	set(CMAKE_FIND_LIBRARY_SUFFIXES ".so")
	endif()
	endmacro()


	# set the shared compiler flags
	# support for GNU C/C++, add other compilers as necessary

	if (CMAKE_C_COMPILER_ID STREQUAL "GNU" OR
	CMAKE_C_COMPILER_ID STREQUAL "Clang" OR
	CMAKE_C_COMPILER_ID STREQUAL "AppleClang")
	if(NOT DEFINED GCC_SHARED_FLAGS)
	find_package(Threads REQUIRED)
	if(CMAKE_USE_PTHREADS_INIT)
	set(GCC_SHARED_FLAGS "-g -O2 -Wall -pthread -D_FILE_OFFSET_BITS=64")
	else()
	set(GCC_SHARED_FLAGS "-g -O2 -Wall -D_FILE_OFFSET_BITS=64")
	endif()
	endif()
	endif()

	# Set the shared linker flags.
	hadoop_add_compiler_flags("${GCC_SHARED_FLAGS}")
	hadoop_add_linker_flags("${LINKER_SHARED_FLAGS}")

	#
	# Linux-specific configuration.
	#
	if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
	# Make GNU extensions available.
	hadoop_add_compiler_flags("-D_GNU_SOURCE")

	# If JVM_ARCH_DATA_MODEL is 32, compile all binaries as 32-bit.
	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")
	hadoop_add_compiler_flags("-m32")
	hadoop_add_linker_flags("-m32")
	endif()
	# Set CMAKE_SYSTEM_PROCESSOR to ensure that find_package(JNI) will use 32-bit libraries
	if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64")
	set(CMAKE_SYSTEM_PROCESSOR "i686")
	endif()
	endif()

	# Determine float ABI of JVM on ARM.
	if(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
	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 ${JAVA_JVM_LIBRARY}
	OUTPUT_VARIABLE JVM_ELF_ARCH
	ERROR_QUIET)
	if(NOT JVM_ELF_ARCH MATCHES "Tag_ABI_VFP_args: VFP registers")
	# Test compilation with -mfloat-abi=softfp using an arbitrary libc function
	# (typically fails with "fatal error: bits/predefs.h: No such file or directory"
	# if soft-float dev libraries are not installed)
	message("Soft-float JVM detected")
	include(CMakePushCheckState)
	cmake_push_check_state()
	set(CMAKE_REQUIRED_FLAGS "${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()
	cmake_pop_check_state()
	hadoop_add_compiler_flags("-mfloat-abi=softfp")
	endif()
	endif()
	endif()

	#
	# Solaris-specific configuration.
	#
	elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
	# Solaris flags. 64-bit compilation is mandatory, and is checked earlier.
	hadoop_add_compiler_flags("-m64 -D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS")
	set(CMAKE_C_FLAGS "-std=gnu99 ${CMAKE_C_FLAGS}")
	set(CMAKE_CXX_FLAGS "-std=gnu++98 ${CMAKE_CXX_FLAGS}")
	hadoop_add_linker_flags("-m64")

	# CMAKE_SYSTEM_PROCESSOR is set to the output of 'uname -p', which on Solaris is
	# the 'lowest' ISA supported, i.e. 'i386' or 'sparc'. However in order for the
	# standard CMake modules to look in the right places it needs to reflect the required
	# compilation mode, i.e. 64 bit. We therefore force it to either 'amd64' or 'sparcv9'.
	if(CMAKE_SYSTEM_PROCESSOR STREQUAL "i386")
	set(CMAKE_SYSTEM_PROCESSOR "amd64")
	set(CMAKE_LIBRARY_ARCHITECTURE "amd64")
	elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "sparc")
	set(CMAKE_SYSTEM_PROCESSOR "sparcv9")
	set(CMAKE_LIBRARY_ARCHITECTURE "sparcv9")
	else()
	message(FATAL_ERROR "Unrecognised CMAKE_SYSTEM_PROCESSOR ${CMAKE_SYSTEM_PROCESSOR}")
	endif()
	endif()