File: CMakeLists.txt

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ismrmrd 1.4.0-1
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cmake_minimum_required(VERSION 2.8)
foreach(p
    CMP0025 # CMake 3.0 Compiler id for Apple Clang is now ``AppleClang``.
    CMP0042 # CMake 3.0 ``MACOSX_RPATH`` is enabled by default.
    CMP0046 # CMake 3.0 Error on non-existent dependency in add_dependencies.
    CMP0054 # CMake 3.1 Only interpret ``if()`` arguments as variables or keywords when unquoted.
    CMP0056 # CMake 3.2 Honor link flags in ``try_compile()`` source-file signature.
    CMP0058 # CMake 3.3 Ninja requires custom command byproducts to be explicit.
    )
  if(POLICY ${p})
    cmake_policy(SET ${p} NEW)
  endif()
endforeach()
project(ISMRMRD)

# set project specific cmake module path
set (ISMRMRD_CMAKE_DIR ${PROJECT_SOURCE_DIR}/cmake CACHE PATH
  "Location of CMake scripts")

# command line options
option(USE_SYSTEM_PUGIXML "Use pugixml installed on the system" OFF)

# and include it to the search list
list(APPEND CMAKE_MODULE_PATH ${ISMRMRD_CMAKE_DIR})

# whether to install dependencies
if (WIN32)
    option(ISMRMRD_INSTALL_DEPENDENCIES "Install ismrmrd dependencies in windows" Off)
endif ()

# set the build type to Release if not specified
if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Release CACHE STRING
      "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel."
      FORCE)
endif()

# compiler flags
if (WIN32)
    add_definitions(-DWIN32 -D_WIN32 -D_WINDOWS)
    add_definitions(-DUNICODE -D_UNICODE)
    add_definitions(-D_CRT_SECURE_NO_WARNINGS)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W3")
    set(CMAKE_EXE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
    set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
    set(CMAKE_STATIC_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
    set(CMAKE_MODULE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
    add_definitions(-D__func__=__FUNCTION__)
else ()
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -Wall")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++11")
endif ()

#  ---   VERSIONING  (begin) ----
#The ISMRMRD convention is to use version numbers with the format:
#   XX.YY.ZZ (major, minor, patch)
#
#The major number increments when the binary compatibility of
#the fixed memory layout struts (e.g. AcquisitionHeader) is broken.
#The minor number changes when there are changes to the XML schema for
#the flexible header. The micro number changes when there are small changes
#in the utility libraries, that don't affect the data format itself.
# For more information see http://semver.org/
set(ISMRMRD_VERSION_MAJOR 1)
set(ISMRMRD_VERSION_MINOR 4)
set(ISMRMRD_VERSION_PATCH 0)
set(ISMRMRD_VERSION_STRING ${ISMRMRD_VERSION_MAJOR}.${ISMRMRD_VERSION_MINOR}.${ISMRMRD_VERSION_PATCH})
set(ISMRMRD_SOVERSION ${ISMRMRD_VERSION_MAJOR}.${ISMRMRD_VERSION_MINOR})

set(ISMRMRD_XML_SCHEMA_SHA1 "275129288d0c5ec39ee11bf8f78f952ae1dcec76")

#Remove line breaks and white space that does not change the meaning of the schema
file(STRINGS ${CMAKE_SOURCE_DIR}/schema/ismrmrd.xsd SCHEMA_STRINGS) #Read all strings from file
string(REPLACE ";" "" SCHEMA_NO_BREAKS  ${SCHEMA_STRINGS}) #Concatenate the list of strings
string(REGEX REPLACE ">[ \t]+<" "><" SCHEMA_NO_SPACE ${SCHEMA_NO_BREAKS}) #Remove spaces and tabs
string(STRIP ${SCHEMA_NO_SPACE} SCHEMA_NO_SPACE) #Strip any leading/trailing whitespace
set(ISMRMRD_SCHEMA_DIR ${CMAKE_CURRENT_BINARY_DIR})
file(WRITE ${ISMRMRD_SCHEMA_DIR}/ismrmrd_no_white_space.xsd ${SCHEMA_NO_SPACE}) #Write to file

#Now hash the cleaned up file
file(SHA1 ${CMAKE_CURRENT_BINARY_DIR}/ismrmrd_no_white_space.xsd ISMRMRD_CURRENT_XML_SCHEMA_SHA1)

#Compare to last known hash
if (NOT (${ISMRMRD_XML_SCHEMA_SHA1} STREQUAL ${ISMRMRD_CURRENT_XML_SCHEMA_SHA1}))
  message("")
  message("-----------------------------------------------")
  message("            !!VERSION ERROR!!                  ")
  message("                                               ")
  message(" Expected SHA1 hash:                           ")
  message("    ${ISMRMRD_XML_SCHEMA_SHA1}")
  message(" Actual SHA1 hash:                             ")
  message("    ${ISMRMRD_CURRENT_XML_SCHEMA_SHA1}")
  message("                                               ")
  message(" The XML Schema (ismrmrmd.xsd) has changed and ")
  message(" the MINOR version number should be increased  ")
  message(" and the SHA1 has should be updated in the     ")
  message(" CMakelists.txt file.                          ")
  message("                                               ")
  message(" If you don't know what this message means, you")
  message(" probably shouldn't be changing anything       ")
  message("-----------------------------------------------")
  message("")
  message(FATAL_ERROR "     FATAL XML VERSION ERROR")
endif()


# Find HDF5 for dataset support
find_package(HDF5 COMPONENTS C)

if (HDF5_FOUND)
    set (ISMRMRD_DATASET_SUPPORT true)
    set (ISMRMRD_DATASET_SOURCES libsrc/dataset.c libsrc/dataset.cpp)
    set (ISMRMRD_DATASET_INCLUDE_DIR ${HDF5_INCLUDE_DIRS})
    set (ISMRMRD_DATASET_LIBRARIES ${HDF5_LIBRARIES})
    add_definitions(${HDF5_DEFINITIONS})
	include_directories(${HDF5_INCLUDE_DIRS})
else ()
    set (ISMRMRD_DATASET_SUPPORT false)
    message (WARNING "HDF5 not found. Dataset and file support unavailable!")
endif ()

# Generate the version.h header file
find_package(Git)
if (GIT_FOUND)
    execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse HEAD WORKING_DIRECTORY
            ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE ISMRMRD_GIT_SHA1 ERROR_VARIABLE ISMRMRD_GIT_STDERR)
    string(STRIP "${ISMRMRD_GIT_SHA1}" ISMRMRD_GIT_SHA1)
    string(LENGTH "${ISMRMRD_GIT_SHA1}" ISMRMRD_GIT_SHA1_LEN)
    if (${ISMRMRD_GIT_SHA1_LEN} LESS 40)
        message(WARNING "Could not determine SHA-1 hash: ${ISMRMRD_GIT_STDERR}")
        set(ISMRMRD_GIT_SHA1 "NA")
    endif ()
else()
  set(ISMRMRD_GIT_SHA1 "NA")
endif()
configure_file(include/version.in ${CMAKE_BINARY_DIR}/include/ismrmrd/version.h)
install(FILES ${CMAKE_BINARY_DIR}/include/ismrmrd/version.h DESTINATION include/ismrmrd COMPONENT Devel)
# note: for the utilities in this project that need ismrmrd/version.h
# remember to add ${CMAKE_BINARY_DIR}/include to the include path


#  ---   VERSIONING  (end) ----

#  ---   Main Library  (begin) ----
# in windows, install the HDF5 dependencies
if (HDF5_FOUND AND WIN32 AND ISMRMRD_INSTALL_DEPENDENCIES)
    if(DEFINED ENV{HDF5_ROOT})
        set(HDF5_BIN_DIR $ENV{HDF5_ROOT}/bin)
    else ()
        set(HDF5_BIN_DIR ${HDF5_INCLUDE_DIRS}/../bin)
    endif ()
    message("Install hdf5 libraries from ${HDF5_BIN_DIR} ")
    install( DIRECTORY ${HDF5_BIN_DIR} DESTINATION bin/.. FILES_MATCHING PATTERN "*.dll" )
endif ()

# include directories for main library
set(ISMRMRD_TARGET_INCLUDE_DIRS
  ${CMAKE_CURRENT_LIST_DIR}/include
  ${CMAKE_BINARY_DIR}/include
  ${ISMRMRD_DATASET_INCLUDE_DIR}
)

set(ISMRMRD_TARGET_SOURCES
  libsrc/ismrmrd.c
  libsrc/ismrmrd.cpp
  libsrc/xml.cpp
  libsrc/meta.cpp
  libsrc/waveform.cpp
  libsrc/waveform.c
  ${ISMRMRD_DATASET_SOURCES}
)

set(ISMRMRD_TARGET_LINK_LIBS ${ISMRMRD_DATASET_LIBRARIES})

# optional handling of system-installed pugixml
if(USE_SYSTEM_PUGIXML)
  find_package(PugiXML)
  if(PugiXML_FOUND)
    message("Found system pugixml: ${PugiXML_INCLUDE_DIR} ${PugiXML_LIBRARY}")
    list(APPEND ISMRMRD_TARGET_INCLUDE_DIRS ${PugiXML_INCLUDE_DIR})
    list(APPEND ISMRMRD_TARGET_LINK_LIBS ${PugiXML_LIBRARY})
  else()
    message(FATAL_ERROR "Pugixml library not found on the system, try without "
    "setting USE_SYSTEM_PUGIXML to use the version provided in the source "
    "tree.")
  endif()
  list(APPEND ISMRMRD_TARGET_INCLUDE_DIRS ${PugiXML_INCLUDE_DIR})
  list(APPEND ISMRMRD_TARGET_LINK_LIBS ${PugiXML_LIBRARY})
else()
  list(APPEND ISMRMRD_TARGET_SOURCES libsrc/pugixml.cpp)
endif()

# main library
include_directories(${ISMRMRD_TARGET_INCLUDE_DIRS})
add_library(ismrmrd SHARED ${ISMRMRD_TARGET_SOURCES})
set_target_properties(ismrmrd PROPERTIES
  VERSION ${ISMRMRD_VERSION_STRING}
  SOVERSION ${ISMRMRD_SOVERSION}
)
target_link_libraries(ismrmrd ${ISMRMRD_TARGET_LINK_LIBS})
list(APPEND ISMRMRD_LIBRARIES ismrmrd) # Add to list of libraries to be found
list(APPEND ISMRMRD_LIBRARY_DIRS ${CMAKE_BINARY_DIR} ) # Add to list of directories to find libraries

include(GNUInstallDirs)

# install the main library
install(TARGETS ismrmrd EXPORT ISMRMRDTargets
   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
   RUNTIME DESTINATION bin
   COMPONENT Devel
)

# install the headers
install(DIRECTORY include/ismrmrd  DESTINATION include COMPONENT Devel)

# install the schema file
install(FILES schema/ismrmrd.xsd DESTINATION share/ismrmrd/schema COMPONENT Devel)

# install the cmake modules
install(FILES cmake/FindFFTW3.cmake DESTINATION share/ismrmrd/cmake COMPONENT Devel)

#  ---   Main Library  (end) ----

# process subdirectories
add_subdirectory(doc)

add_subdirectory(utilities)
if (HDF5_FOUND)
    add_subdirectory(examples/c)
endif ()

# TODO: make this work on Windows
if (NOT WIN32)
    add_subdirectory(tests)
endif ()

# install the matlab api
install(DIRECTORY matlab DESTINATION share/ismrmrd )

#--- Create cmake package for downstream projects
#
##- include(CMakePackageConfigHelpers)
##- write_basic_package_version_file(
##-   "${CMAKE_CURRENT_BINARY_DIR}/ISMRMRDConfigVersion.cmake"
##-   VERSION ${ISMRMRD_VERSION_STRING}
##-   COMPATIBILITY AnyNewerVersion
##- )

##- export(EXPORT ISMRMRDTargets
##-  FILE "${CMAKE_CURRENT_BINARY_DIR}/ISMRMRDTargets.cmake"
##-  NAMESPACE ISMRMRD
##-)

set(CONFIG_ISMRMRD_SCHEMA_DIR   ${ISMRMRD_SCHEMA_DIR})
set(CONFIG_ISMRMRD_TARGET_INCLUDE_DIRS ${ISMRMRD_TARGET_INCLUDE_DIRS})
set(CONFIG_ISMRMRD_LIBRARY_DIRS ${ISMRMRD_LIBRARY_DIRS})
configure_file(cmake/ISMRMRDConfig.cmake.in
  "${CMAKE_CURRENT_BINARY_DIR}/ISMRMRDConfig.cmake"
  @ONLY
)

set(CONFIG_ISMRMRD_SCHEMA_DIR   ${CMAKE_INSTALL_PREFIX}/share/ismrmrd/schema)
set(CONFIG_ISMRMRD_TARGET_INCLUDE_DIRS ${CMAKE_INSTALL_PREFIX}/include)
set(CONFIG_ISMRMRD_LIBRARY_DIRS ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
if (ISMRMRD_DATASET_SUPPORT)
  list(APPEND CONFIG_ISMRMRD_TARGET_INCLUDE_DIRS ${HDF5_INCLUDE_DIRS})
  list(APPEND CONFIG_ISMRMRD_LIBRARY_DIRS ${HDF5_LIBRARY_DIRS})
  list(APPEND ISMRMRD_LIBRARIES ${HDF5_LIBRARIES})
endif ()
configure_file(cmake/ISMRMRDConfig.cmake.in
  "${CMAKE_CURRENT_BINARY_DIR}/InstallFiles/ISMRMRDConfig.cmake"
  @ONLY
)

set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/ISMRMRD)
install(
  FILES
    "${CMAKE_CURRENT_BINARY_DIR}/InstallFiles/ISMRMRDConfig.cmake"
#--    "${CMAKE_CURRENT_BINARY_DIR}/ISMRMRDConfigVersion.cmake"
  DESTINATION
    ${ConfigPackageLocation}
  COMPONENT
    Devel
)

install(
  FILES
    cmake/FindFFTW3.cmake
  DESTINATION
    ${ConfigPackageLocation}
  COMPONENT
    Devel
)
  
# Create package
string(TOLOWER ${PROJECT_NAME} PROJECT_NAME_LOWER)
include(${ISMRMRD_CMAKE_DIR}/ismrmrd_cpack.cmake)
if(CPACK_GENERATOR)
  message(STATUS "Found CPack generators: ${CPACK_GENERATOR}")
  configure_file("${ISMRMRD_CMAKE_DIR}/cpack_options.cmake.in" ${ISMRMRD_CPACK_CFG_FILE} @ONLY)
  set(CPACK_PROJECT_CONFIG_FILE ${ISMRMRD_CPACK_CFG_FILE})
  include(CPack)
endif()