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############################################################################################################################
##
## waLBerla's main cmake file
##
## Contents:
## - definition of build options
## - compiler variables ( c++ standard, warnings etc. )

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## - Finding of service libraries. Required: boost, Optional: MPI, PE, METIS
## the include paths are set, and the libraries are added to variable SERVICE_LIBS
## - Subdirectory cmake lists are called
## -> src/ this folder contains all modules, each module (that contains c or cpp files) is linked to a
## static library. Dependencies between these shared libraries are tracked manually,

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## for more information see waLBerlaModuleDependencySystem.cmake
## -> tests/ Same subdirectories as src/ folder. Contains tests for each module
## - Export of variables into internal cache variables, for usage in applications or projects that use walberla as
## subdirectory. Variables containing the service-libs,

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##
############################################################################################################################
############################################################################################################################
##
## Project name, version, Custom CMake functions
##
############################################################################################################################

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set ( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${walberla_SOURCE_DIR}/cmake )
include ( waLBerlaFunctions )

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# Enable CTest
enable_testing()
include( CTest )

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############################################################################################################################
############################################################################################################################
##
## Definition of build options
##
############################################################################################################################
# Build options
option ( WALBERLA_DOUBLE_ACCURACY "Floating point accuracy, defaults to double" ON )
option ( WALBERLA_ENABLE_GUI "Compile with GUI" )

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option ( WALBERLA_BUILD_TESTS "Build Testcases" )
option ( WALBERLA_BUILD_BENCHMARKS "Build Benchmarks" ON )
option ( WALBERLA_BUILD_TOOLS "Build Tools" )
option ( WALBERLA_BUILD_TUTORIALS "Build Tutorials" ON )
option ( WALBERLA_BUILD_SHOWCASES "Build Showcases" OFF )

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option ( WALBERLA_BUILD_WITH_MPI "Build with MPI" ON )
option ( WALBERLA_BUILD_WITH_METIS "Build with metis graph partitioner" OFF )
option ( WALBERLA_BUILD_WITH_PARMETIS "Build with ParMetis graph partitioner" OFF )

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option ( WALBERLA_BUILD_WITH_GPROF "Enables gprof" )
option ( WALBERLA_BUILD_WITH_GCOV "Enables gcov" )
option ( WALBERLA_BUILD_WITH_LTO "Enable link time optimizations" )
option ( WALBERLA_BUILD_WITH_OPENMP "Enable OpenMP support" )
option ( WALBERLA_BUILD_WITH_PYTHON "Support for embedding Python" )

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option ( WALBERLA_BUILD_WITH_PYTHON_MODULE "Build waLBerla python module" )
option ( WALBERLA_BUILD_WITH_PYTHON_LBM "Include LBM module into python module" OFF )
option ( WALBERLA_BUILD_WITH_CODEGEN "Enable pystencils code generation" OFF )

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option ( WALBERLA_BUILD_WITH_LIKWID_MARKERS "Compile in markers for likwid-perfctr" )

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option ( WALBERLA_BUILD_WITH_FASTMATH "Fast math" )

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option ( WALBERLA_SIMD_FORCE_SCALAR "Do not use SIMD operations even when available" OFF )

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option ( WALBERLA_BUFFER_DEBUG "Type checking for BufferSystem ( slow )" OFF )
option ( WALBERLA_NO_OUTDATED_FEATURES "Show warning/errors when outdated features "
"(i.e. features that will be deprecated) are used" )
# Profile guided optimization
option ( WALBERLA_PROFILE_GENERATE "Generates Profile for Optimization" )
option ( WALBERLA_PROFILE_USE "Uses Profile to optimize" )
# Compiler Optimization
option ( WALBERLA_OPTIMIZE_FOR_LOCALHOST "Enable compiler optimizations spcific to localhost" )
# Installation Directory
set ( CMAKE_INSTALL_PREFIX /usr/local/waLBerla CACHE STRING "The default installation directory." )
# Default build type
if ( NOT CMAKE_BUILD_TYPE )
set ( CMAKE_BUILD_TYPE Release CACHE STRING "Build Types: Debug Release DebugOptimized RelWithDebInfo MinSizeRel." FORCE )
endif()
SET_PROPERTY( CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Debug Release DebugOptimized RelWithDebInfo MinSizeRel )
# Debugging options )
option ( WALBERLA_STL_BOUNDS_CHECKS "Use debug capabilites of libstd++: iterator and bounds checks" )

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# Warning options
option ( WARNING_DISABLE "Disables additional compiler warnings" OFF )
option ( WARNING_PEDANTIC "Enables pedantic compiler warnings" ON )
option ( WARNING_ERROR "Convert warnings to errors compiler warnings" OFF )
option ( WARNING_DEPRECATED "Show warning when deprecated features are used" ON )
# Sanitizer options
option ( WALBERLA_SANITIZE_ADDRESS "Enables address sanitizer in gcc and clang" )
option ( WALBERLA_SANITIZE_UNDEFINED "Enables undefined behavior sanitizer in gcc and clang" )

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# Every folder that is listed here can contain modules or tests
# this can be extended by applications to have own modules
# Here the src/ folder is added to this list, where all modules are located

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list( APPEND WALBERLA_MODULE_DIRS "${walberla_SOURCE_DIR}/src" "${walberla_SOURCE_DIR}/tests" )
list( REMOVE_DUPLICATES WALBERLA_MODULE_DIRS )
set ( WALBERLA_MODULE_DIRS ${WALBERLA_MODULE_DIRS} CACHE INTERNAL "All folders that contain modules or tests" )
############################################################################################################################
############################################################################################################################
##
## Compiler detection
##
############################################################################################################################
# Check for intel compiler
if( CMAKE_CXX_COMPILER MATCHES "icpc" OR CMAKE_CXX_COMPILER_ARG1 MATCHES "icpc" )
option ( WALBERLA_CXX_COMPILER_IS_INTEL "Use Intel compiler" ON )
# Intel(R) Compiler has its own library archiver,
# if you build libraries and do not use xiar,
# the Intel compiler will complain about invalid
# archives at the link phase.
# The Intel(R) archiver is "xiar" usually
# located in the same folder as the compiler,
FIND_PROGRAM(XIAR xiar)
IF(XIAR)
SET(CMAKE_AR "${XIAR}")
ENDIF(XIAR)
MARK_AS_ADVANCED(XIAR)
# Intel(R) Compiler also comes with its own linker
# which provides a number of additional benefits when
# linking code compiled with the Intel(R) compiler.
# Again, usually in the same place as icc itself,
FIND_PROGRAM(XILD xild)
IF(XILD)
SET(CMAKE_LINKER "${XILD}")
ENDIF(XILD)
MARK_AS_ADVANCED(XILD)
set( CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++14" )
add_flag ( CMAKE_CXX_FLAGS ${CMAKE_CXX14_STANDARD_COMPILE_OPTION} )

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else()
option ( WALBERLA_CXX_COMPILER_IS_INTEL "Use Intel compiler" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_INTEL )
# Check for Gnu compiler
if ( CMAKE_COMPILER_IS_GNUCXX AND NOT WALBERLA_CXX_COMPILER_IS_INTEL )
option ( WALBERLA_CXX_COMPILER_IS_GNU "Use gnu compiler" ON )
else()
option ( WALBERLA_CXX_COMPILER_IS_GNU "Use gnu compiler" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_GNU )

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# Check for Visual Studio
if ( MSVC )
option ( WALBERLA_CXX_COMPILER_IS_MSVC "Use Visual Studio compiler" ON )
else()
option ( WALBERLA_CXX_COMPILER_IS_MSVC "Use Visual Studio compiler" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_MSVC )
# Check for IBM compiler
if( CMAKE_CXX_COMPILER MATCHES "xlc" OR CMAKE_CXX_COMPILER_ARG1 MATCHES "xlc" )
option ( WALBERLA_CXX_COMPILER_IS_IBM "Use IBM compiler" ON )
else()
option ( WALBERLA_CXX_COMPILER_IS_IBM "Use IBM compiler" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_IBM )
# Check for NEC SX compiler
if( CMAKE_CXX_COMPILER MATCHES "sxc" OR CMAKE_CXX_COMPILER_ARG1 MATCHES "sxc" OR CMAKE_CXX_COMPILER MATCHES "sxmpic" OR CMAKE_CXX_COMPILER_ARG1 MATCHES "sxmpic" )
option ( WALBERLA_CXX_COMPILER_IS_NEC "Use NEC compiler" ON )

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else()
option ( WALBERLA_CXX_COMPILER_IS_NEC "Use NEC compiler" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_NEC )
# Check for Clang compiler
if( CMAKE_CXX_COMPILER MATCHES "clang" OR CMAKE_CXX_COMPILER_ARG1 MATCHES "clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" )

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option ( WALBERLA_CXX_COMPILER_IS_CLANG "Use clang compiler" ON )
else()
option ( WALBERLA_CXX_COMPILER_IS_CLANG "Use clang compiler" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_CLANG )
if( CMAKE_CXX_COMPILER_ID MATCHES Cray )
option ( WALBERLA_CXX_COMPILER_IS_CRAY "Use Cray compiler" ON )
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.4)
message( FATAL_ERROR "Insufficient Cray Compiler Environment version" )
endif()
else()
option ( WALBERLA_CXX_COMPILER_IS_CRAY "Use Cray compiler" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_CRAY )
# Check for MPI wrapper
get_filename_component( CXX_COMPILER_WITHOUT_PATH ${CMAKE_CXX_COMPILER} NAME )
if( CXX_COMPILER_WITHOUT_PATH MATCHES "mpi" OR CMAKE_CXX_COMPILER_ARG1 MATCHES "mpi" )
option ( WALBERLA_CXX_COMPILER_IS_MPI_WRAPPER "Compiler is MPI wrapper" ON )
else()
option ( WALBERLA_CXX_COMPILER_IS_MPI_WRAPPER "Compiler is MPI wrapper" OFF )
endif()
mark_as_advanced ( WALBERLA_CXX_COMPILER_IS_MPI_WRAPPER )
############################################################################################################################
############################################################################################################################
##
## Compiler Setup
##
############################################################################################################################
# Profile guided optimization
if ( WALBERLA_PROFILE_GENERATE )
if( WALBERLA_CXX_COMPILER_IS_INTEL )
add_flag( CMAKE_CXX_FLAGS "-prof-gen" )
file( MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/profile" )
add_flag( CMAKE_CXX_FLAGS "-prof-dir${CMAKE_BINARY_DIR}/profile" )
elseif( WALBERLA_CXX_COMPILER_IS_GNU )
add_flag( CMAKE_CXX_FLAGS "-fprofile-generate" )
elseif( WALBERLA_CXX_COMPILER_IS_MSVC )
add_flag ( CMAKE_CXX_FLAGS "/GL" )
add_flag ( CMAKE_MODULE_LINKER_FLAGS "/LTCG:PGINSTRUMENT" )
add_flag ( CMAKE_SHARED_LINKER_FLAGS "/LTCG:PGINSTRUMENT" )
add_flag ( CMAKE_EXE_LINKER_FLAGS "/LTCG:PGINSTRUMENT" )
endif()
endif()
if ( WALBERLA_PROFILE_USE )
if( WALBERLA_CXX_COMPILER_IS_INTEL )
add_flag( CMAKE_CXX_FLAGS "-prof-use" )
add_flag( CMAKE_CXX_FLAGS "-prof-dir${CMAKE_BINARY_DIR}/profile" )
elseif( WALBERLA_CXX_COMPILER_IS_GNU )
add_flag( CMAKE_CXX_FLAGS "-fprofile-use" )
elseif( WALBERLA_CXX_COMPILER_IS_MSVC )
add_flag ( CMAKE_CXX_FLAGS "/GL" )
add_flag ( CMAKE_MODULE_LINKER_FLAGS "/LTCG:PGOPTIMIZE" )
add_flag ( CMAKE_SHARED_LINKER_FLAGS "/LTCG:PGOPTIMIZE" )
add_flag ( CMAKE_EXE_LINKER_FLAGS "/LTCG:PGOPTIMIZE" )
endif()
endif()
set( CMAKE_CXX_STANDARD 14 )
set( CMAKE_CXX_STANDARD_REQUIRED ON )
set( CMAKE_CXX_EXTENSIONS OFF )

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# common flags for intel and g++
if( WALBERLA_CXX_COMPILER_IS_GNU OR WALBERLA_CXX_COMPILER_IS_INTEL )
add_flag ( CMAKE_CXX_FLAGS "-Wall -Wconversion -Wshadow" )
endif()

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if( WALBERLA_CXX_COMPILER_IS_NEC )
set( CMAKE_CXX14_STANDARD_COMPILE_OPTION "-Kcpp14" )
add_flag ( CMAKE_CXX_FLAGS "${CMAKE_CXX14_STANDARD_COMPILE_OPTION} -Krtti -Kexceptions -size_t64 -Kgcc" )

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add_flag ( CMAKE_CXX_FLAGS "-D__BIG_ENDIAN -D__BYTE_ORDER=__BIG_ENDIAN" )
add_flag ( CMAKE_CXX_FLAGS "-Tnoauto,used" )
add_flag ( CMAKE_EXE_LINKER_FLAGS "-Wl,-h,muldefs" )
add_flag ( CMAKE_C_FLAGS "-size_t64 -Kgcc" )
add_flag ( CMAKE_C_FLAGS "-D__BIG_ENDIAN -D__BYTE_ORDER=__BIG_ENDIAN" )
add_flag ( CMAKE_C_FLAGS "-DSQLITE_OMIT_WAL -DHAVE_UTIME -DTHREADSAFE=0" )
set( CMAKE_RANLIB /bin/true )
set( CMAKE_SKIP_BUILD_RPATH TRUE )
set( CMAKE_C_FLAGS_DEBUGOPTIMIZED "-Chopt -g" )
set( CMAKE_C_FLAGS_DEBUG "-Cdebug -g" )
set( CMAKE_CXX_FLAGS_DEBUGOPTIMIZED "-Chopt -g" )
set( CMAKE_CXX_FLAGS_DEBUG "-Cdebug -g" )
endif()
# Fixes linker errors with IBM compiler
if( WALBERLA_CXX_COMPILER_IS_IBM )
add_flag ( CMAKE_CXX_FLAGS "-qpic=large" )
endif()
# Fixes linker errors with Cray compiler
if( WALBERLA_CXX_COMPILER_IS_CRAY )
add_flag ( CMAKE_EXE_LINKER_FLAGS "-dynamic -L/opt/gcc/4.9.3/snos/lib64" )
endif()
# Silences compiler and linker warnings and information with the IBM compiler
if( WALBERLA_CXX_COMPILER_IS_IBM )
add_flag ( CMAKE_CXX_FLAGS "-qsuppress=1586-267" ) # 1586-267 (I) Inlining of specified subprogram failed due to the presence of a C++ exception handler
add_flag ( CMAKE_CXX_FLAGS "-qsuppress=1586-266" ) # 1586-266 (I) Inlining of specified subprogram failed due to the presence of a global label
add_flag ( CMAKE_CXX_FLAGS "-qsuppress=1540-0724" ) # 1540-0724 (W) The non-type template argument "2147483648" of type "T" has wrapped [coming from boost/integer_traits.hpp]
add_flag ( CMAKE_CXX_FLAGS "-qsuppress=1540-0095" ) # 1540-0095 (W) The friend function declaration ... [coming from boost/mpl/map/aux_/map0.hpp]
add_flag ( CMAKE_CXX_FLAGS "-qsuppress=1500-030" ) # 1500-030: (I) INFORMATION: [...] Additional optimization may be attained by recompiling and specifying MAXMEM option with a value greater than 8192.
add_flag ( CMAKE_C_FLAGS "-qsuppress=1500-030" ) # 1500-030: (I) INFORMATION: [...] Additional optimization may be attained by recompiling and specifying MAXMEM option with a value greater than 8192.
endif()
# Silences compiler and linker warnings and information with the Cray compiler
if( WALBERLA_CXX_COMPILER_IS_CRAY )
set( CMAKE_INCLUDE_SYSTEM_FLAG_CXX "-isystem " )
add_flag ( CMAKE_CXX_FLAGS "-h nomessage=1" ) # CC-1 The source file does not end with a new-line character.
add_flag ( CMAKE_C_FLAGS "-DSQLITE_HAVE_ISNAN" ) # SQLite will not work correctly with the -ffast-math option of GCC.
add_flag ( CMAKE_CXX_FLAGS "-DSQLITE_HAVE_ISNAN" ) # SQLite will not work correctly with the -ffast-math option of GCC.
endif()
# architecture optimization
if( WALBERLA_OPTIMIZE_FOR_LOCALHOST )
if( WALBERLA_CXX_COMPILER_IS_GNU OR WALBERLA_CXX_COMPILER_IS_INTEL OR WALBERLA_CXX_COMPILER_IS_CLANG )
add_flag ( CMAKE_CXX_FLAGS "-march=native" )
add_flag ( CMAKE_C_FLAGS "-march=native" )
if( WALBERLA_CXX_COMPILER_IS_INTEL )
add_flag ( CMAKE_CXX_FLAGS "-xhost" )
add_flag ( CMAKE_C_FLAGS "-xhost" )
endif()
endif()

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if( WALBERLA_CXX_COMPILER_IS_INTEL )
# system headers are also supported by intel, but cmake does not recognize that
set( CMAKE_INCLUDE_SYSTEM_FLAG_CXX "-isystem " )
add_flag ( CMAKE_CXX_FLAGS "-wd2928,2504,2259,1682,597" )
elseif( WALBERLA_CXX_COMPILER_IS_GNU )
add_flag ( CMAKE_CXX_FLAGS "-Wfloat-equal -Wextra" )

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elseif( WALBERLA_CXX_COMPILER_IS_NEC )
add_flag ( CMAKE_CXX_FLAGS "-wall" )
endif()
if ( WARNING_PEDANTIC AND WALBERLA_CXX_COMPILER_IS_GNU )
add_flag ( CMAKE_CXX_FLAGS "-pedantic" )

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endif ( )

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# omit deprecated warnings

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if( WALBERLA_CXX_COMPILER_IS_INTEL )
add_flag( CMAKE_CXX_FLAGS "-wd1478" ) # Disable compiler warning # 1478: "declared as deprecated"
elseif( WALBERLA_CXX_COMPILER_IS_GNU OR WALBERLA_CXX_COMPILER_IS_CLANG )
add_flag ( CMAKE_CXX_FLAGS "-Wno-deprecated-declarations")
endif()
endif()

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# Treat warnings as errors
if ( WARNING_ERROR )
if( WALBERLA_CXX_COMPILER_IS_GNU OR WALBERLA_CXX_COMPILER_IS_INTEL OR WALBERLA_CXX_COMPILER_IS_CLANG )
add_flag ( CMAKE_CXX_FLAGS "-pedantic-errors -Werror" )
elseif( WALBERLA_CXX_COMPILER_IS_MSVC )
add_flag ( CMAKE_CXX_FLAGS "/WX" )
elseif ( WALBERLA_CXX_COMPILER_IS_CRAY )
add_flag ( CMAKE_CXX_FLAGS "-h error_on_warning" )
endif()
endif ( )
if ( WALBERLA_CXX_COMPILER_IS_CLANG )
add_flag ( CMAKE_CXX_FLAGS "-Wall -Wconversion -Wshadow -Wno-c++11-extensions -Qunused-arguments" )

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add_flag ( CMAKE_CXX_FLAGS "-D'_LIBCPP_EXTERN_TEMPLATE(...)='")
endif ( )
if( WALBERLA_CXX_COMPILER_IS_GNU OR WALBERLA_CXX_COMPILER_IS_INTEL OR WALBERLA_CXX_COMPILER_IS_CLANG )
if ( WALBERLA_STL_BOUNDS_CHECKS )
add_definitions ( "-D_GLIBCXX_DEBUG" )
endif()
endif()
#fastmath
if ( WALBERLA_BUILD_WITH_FASTMATH )
if ( WALBERLA_CXX_COMPILER_IS_INTEL )
add_flag( CMAKE_CXX_FLAGS "-fp-model fast=2 -no-prec-sqrt -no-prec-div" )
endif()

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if ( WALBERLA_CXX_COMPILER_IS_GNU OR WALBERLA_CXX_COMPILER_IS_CLANG )
add_flag( CMAKE_CXX_FLAGS "-ffast-math")
endif()

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if( WALBERLA_CXX_COMPILER_IS_MSVC )
add_flag( CMAKE_CXX_FLAGS "/fp:fast" )
endif()

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# Xcode generator disables -isystem flag, even though current versions of Xcode support it
if(CMAKE_GENERATOR STREQUAL "Xcode")
set(CMAKE_INCLUDE_SYSTEM_FLAG_C "-isystem ")
set(CMAKE_INCLUDE_SYSTEM_FLAG_CXX "-isystem ")
endif()
#GCC 5+ ABI selection
if( WALBERLA_CXX_COMPILER_IS_GNU )
if( NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0.0 )
option ( WALBERLA_USE_CPP11_ABI "On GCC 5+ use the C++11 ABI" ON )
if( WALBERLA_USE_CPP11_ABI )
add_flag( CMAKE_CXX_FLAGS "-D_GLIBCXX_USE_CXX11_ABI=1" )
else()
add_flag( CMAKE_CXX_FLAGS "-D_GLIBCXX_USE_CXX11_ABI=0" )
endif()
endif()
endif()
# disable Xcode 7.3+ linker deduplication pass to speed up linking in debug mode
if ( APPLE )
execute_process( COMMAND ${CMAKE_LINKER} -v OUTPUT_VARIABLE LINKER_VERSION ERROR_VARIABLE LINKER_VERSION )
string( REGEX MATCH "ld64-[0-9\\.\\-]+" LINKER_VERSION ${LINKER_VERSION} )
string( REGEX MATCHALL "[^\\-]+" LINKER_VERSION ${LINKER_VERSION} )
list( GET LINKER_VERSION 0 LINKER_TYPE )
list( GET LINKER_VERSION 1 LINKER_VERSION )
if( LINKER_TYPE STREQUAL "ld64" AND LINKER_VERSION VERSION_GREATER 264.3.101 )
add_flag( CMAKE_EXE_LINKER_FLAGS_DEBUG "-Wl,-no_deduplicate")
add_flag( CMAKE_MODULE_LINKER_FLAGS_DEBUG "-Wl,-no_deduplicate")
add_flag( CMAKE_SHARED_LINKER_FLAGS_DEBUG "-Wl,-no_deduplicate")
endif()
endif()
############################################################################################################################
############################################################################################################################
##
## Find optional C++ libraries
##
############################################################################################################################
try_compile( WALBERLA_USE_STD_FILESYSTEM "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdFilesystem.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_FILESYSTEM ${CMAKE_CXX14_STANDARD_COMPILE_OPTION} )
if( WALBERLA_USE_STD_FILESYSTEM )
message( STATUS "Found std::filesystem")
else()
try_compile( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdFilesystem.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM ${CMAKE_CXX14_STANDARD_COMPILE_OPTION} )
if( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM )
message( STATUS "Found std::experimental::filesystem")
endif()
if( NOT WALBERLA_CXX_COMPILER_IS_MSVC AND NOT WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM )
unset( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM CACHE )
try_compile( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdFilesystem.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM ${CMAKE_CXX14_STANDARD_COMPILE_OPTION}
LINK_LIBRARIES stdc++fs )
if( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM )
message( STATUS "Found std::experimental::filesystem in libstdc++fs")
list ( APPEND SERVICE_LIBS -lstdc++fs )
endif()
endif()
if( NOT WALBERLA_CXX_COMPILER_IS_MSVC AND NOT WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM )
unset( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM CACHE )
try_compile( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdFilesystem.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM ${CMAKE_CXX14_STANDARD_COMPILE_OPTION}
LINK_LIBRARIES c++experimental )
if( WALBERLA_USE_STD_EXPERIMENTAL_FILESYSTEM )
message( STATUS "Found std::experimental::filesystem in libc++experimental")
list ( APPEND SERVICE_LIBS -lc++experimental )
endif()
endif()
endif()
try_compile( WALBERLA_USE_STD_ANY "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdAny.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_ANY ${CMAKE_CXX14_STANDARD_COMPILE_OPTION} )
if( WALBERLA_USE_STD_ANY )
message( STATUS "Found std::any")
else()
try_compile( WALBERLA_USE_STD_EXPERIMENTAL_ANY "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdAny.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_EXPERIMENTAL_ANY ${CMAKE_CXX14_STANDARD_COMPILE_OPTION} )
if( WALBERLA_USE_STD_EXPERIMENTAL_ANY )
message( STATUS "Found std::experimental::any")
endif()
endif()
try_compile( WALBERLA_USE_STD_OPTIONAL "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdOptional.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_OPTIONAL ${CMAKE_CXX14_STANDARD_COMPILE_OPTION} )
if( WALBERLA_USE_STD_OPTIONAL )
message( STATUS "Found std::optional")
else()
try_compile( WALBERLA_USE_STD_EXPERIMENTAL_OPTIONAL "${CMAKE_BINARY_DIR}" "${CMAKE_SOURCE_DIR}/cmake/TestStdOptional.cpp"
COMPILE_DEFINITIONS -DWALBERLA_USE_STD_EXPERIMENTAL_OPTIONAL ${CMAKE_CXX14_STANDARD_COMPILE_OPTION} )
if( WALBERLA_USE_STD_EXPERIMENTAL_OPTIONAL )
message( STATUS "Found std::experimental::optional")
endif()
endif()

Christian Godenschwager
committed
############################################################################################################################
##
## Visual Studio Setup
##
############################################################################################################################
if ( WALBERLA_CXX_COMPILER_IS_MSVC )
string( REGEX REPLACE "[/-]W[0-4]" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} ) # remove default warning flags
option ( WALBERLA_GROUP_PROJECTS "Flag if the projects are grouped or in a flat hierarchy" ON )
option ( WALBERLA_GROUP_FILES "Flag if the files are grouped or in a flat hierarchy" ON )
set_property ( GLOBAL PROPERTY USE_FOLDERS ${WALBERLA_GROUP_PROJECTS} )
option ( WALBERLA_VS_MULTI_PROCESS_BUILD "Use the /mp option for VS builds" ON )
if( WALBERLA_VS_MULTI_PROCESS_BUILD )
add_flag ( CMAKE_CXX_FLAGS "-MP" ) # enable multi-threaded compiling
endif()
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