CMAKE_MINIMUM_REQUIRED(VERSION 2.8)

IF(POLICY CMP0048) 
  CMAKE_POLICY(SET CMP0048 OLD) 
ENDIF(POLICY CMP0048)

IF(POLICY CMP0043) 
  CMAKE_POLICY(SET CMP0043 OLD) 
ENDIF(POLICY CMP0043)

IF(POLICY CMP0026)
  #This is for copying the dll's needed by glpk (in lp_test and mip_test)
  CMAKE_POLICY(SET CMP0026 OLD) 
ENDIF(POLICY CMP0026)

SET(PROJECT_NAME "LEMON")
PROJECT(${PROJECT_NAME})

INCLUDE(FindPythonInterp)
INCLUDE(FindWget)

IF(EXISTS ${PROJECT_SOURCE_DIR}/cmake/version.cmake)
  INCLUDE(${PROJECT_SOURCE_DIR}/cmake/version.cmake)
ELSEIF(DEFINED ENV{LEMON_VERSION})
  SET(LEMON_VERSION $ENV{LEMON_VERSION} CACHE STRING "LEMON version string.")
ELSE()
  EXECUTE_PROCESS(
    COMMAND
    hg log -r. --template "{latesttag}"
    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
    OUTPUT_VARIABLE HG_REVISION_TAG
    ERROR_QUIET
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  EXECUTE_PROCESS(
    COMMAND
    hg log -r. --template "{latesttagdistance}"
    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
    OUTPUT_VARIABLE HG_REVISION_DIST
    ERROR_QUIET
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  EXECUTE_PROCESS(
    COMMAND
    hg log -r. --template "{node|short}"
    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
    OUTPUT_VARIABLE HG_REVISION_ID
    ERROR_QUIET
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )

  IF(HG_REVISION_TAG STREQUAL "")
    SET(HG_REVISION_ID "hg-tip")
  ELSE()
    IF(HG_REVISION_TAG STREQUAL "null")
      SET(HG_REVISION_TAG "trunk")
    ELSEIF(HG_REVISION_TAG MATCHES "^r")
      STRING(SUBSTRING ${HG_REVISION_TAG} 1 -1 HG_REVISION_TAG)
    ENDIF()
    IF(HG_REVISION_DIST STREQUAL "0")
      SET(HG_REVISION ${HG_REVISION_TAG})
    ELSE()
      SET(HG_REVISION
	"${HG_REVISION_TAG}+${HG_REVISION_DIST}-${HG_REVISION_ID}")
    ENDIF()
  ENDIF()

  SET(LEMON_VERSION ${HG_REVISION} CACHE STRING "LEMON version string.")
ENDIF()

SET(PROJECT_VERSION ${LEMON_VERSION})

SET(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)

FIND_PACKAGE(Doxygen)
FIND_PACKAGE(Ghostscript)

IF(WIN32)
  SET(LEMON_WIN32 TRUE)
ENDIF(WIN32)

SET(LEMON_ENABLE_GLPK YES CACHE STRING "Enable GLPK solver backend.")
SET(LEMON_ENABLE_ILOG YES CACHE STRING "Enable ILOG (CPLEX) solver backend.")
SET(LEMON_ENABLE_COIN YES CACHE STRING "Enable COIN solver backend.")
SET(LEMON_ENABLE_SOPLEX YES CACHE STRING "Enable SoPlex solver backend.")

IF(LEMON_ENABLE_GLPK) 
  FIND_PACKAGE(GLPK 4.33)
ENDIF(LEMON_ENABLE_GLPK)
IF(LEMON_ENABLE_ILOG)
  FIND_PACKAGE(ILOG)
ENDIF(LEMON_ENABLE_ILOG)
IF(LEMON_ENABLE_COIN)
  FIND_PACKAGE(COIN)
ENDIF(LEMON_ENABLE_COIN)
IF(LEMON_ENABLE_SOPLEX)
  FIND_PACKAGE(SOPLEX)
ENDIF(LEMON_ENABLE_SOPLEX)

IF(GLPK_FOUND)
  SET(LEMON_HAVE_LP TRUE)
  SET(LEMON_HAVE_MIP TRUE)
  SET(LEMON_HAVE_GLPK TRUE)
ENDIF(GLPK_FOUND)
IF(ILOG_FOUND)
  SET(LEMON_HAVE_LP TRUE)
  SET(LEMON_HAVE_MIP TRUE)
  SET(LEMON_HAVE_CPLEX TRUE)
ENDIF(ILOG_FOUND)
IF(COIN_FOUND)
  SET(LEMON_HAVE_LP TRUE)
  SET(LEMON_HAVE_MIP TRUE)
  SET(LEMON_HAVE_CLP TRUE)
  SET(LEMON_HAVE_CBC TRUE)
ENDIF(COIN_FOUND)
IF(SOPLEX_FOUND)
  SET(LEMON_HAVE_LP TRUE)
  SET(LEMON_HAVE_SOPLEX TRUE)
ENDIF(SOPLEX_FOUND)

IF(ILOG_FOUND)
  SET(DEFAULT_LP "CPLEX")
  SET(DEFAULT_MIP "CPLEX")
ELSEIF(COIN_FOUND)
  SET(DEFAULT_LP "CLP")
  SET(DEFAULT_MIP "CBC")
ELSEIF(GLPK_FOUND)
  SET(DEFAULT_LP "GLPK")
  SET(DEFAULT_MIP "GLPK")
ELSEIF(SOPLEX_FOUND)
  SET(DEFAULT_LP "SOPLEX")
ENDIF()

IF(NOT LEMON_DEFAULT_LP OR
    (NOT ILOG_FOUND AND (LEMON_DEFAULT_LP STREQUAL "CPLEX")) OR
    (NOT COIN_FOUND AND (LEMON_DEFAULT_LP STREQUAL "CLP")) OR
    (NOT GLPK_FOUND AND (LEMON_DEFAULT_LP STREQUAL "GLPK")) OR
    (NOT SOPLEX_FOUND AND (LEMON_DEFAULT_LP STREQUAL "SOPLEX")))
  SET(LEMON_DEFAULT_LP ${DEFAULT_LP} CACHE STRING
    "Default LP solver backend (GLPK, CPLEX, CLP or SOPLEX)" FORCE)
ELSE()
  SET(LEMON_DEFAULT_LP ${DEFAULT_LP} CACHE STRING
    "Default LP solver backend (GLPK, CPLEX, CLP or SOPLEX)")
ENDIF()
IF(NOT LEMON_DEFAULT_MIP OR
    (NOT ILOG_FOUND AND (LEMON_DEFAULT_MIP STREQUAL "CPLEX")) OR
    (NOT COIN_FOUND AND (LEMON_DEFAULT_MIP STREQUAL "CBC")) OR
    (NOT GLPK_FOUND AND (LEMON_DEFAULT_MIP STREQUAL "GLPK")))
  SET(LEMON_DEFAULT_MIP ${DEFAULT_MIP} CACHE STRING
    "Default MIP solver backend (GLPK, CPLEX or CBC)" FORCE)
ELSE()
  SET(LEMON_DEFAULT_MIP ${DEFAULT_MIP} CACHE STRING
    "Default MIP solver backend (GLPK, CPLEX or CBC)")
ENDIF()


IF(DEFINED ENV{LEMON_CXX_WARNING})
  SET(CXX_WARNING $ENV{LEMON_CXX_WARNING})
ELSE()
  IF(CMAKE_COMPILER_IS_GNUCXX)
    SET(CXX_WARNING "-Wall -W -Wunused -Wformat=2 -Wctor-dtor-privacy -Wnon-virtual-dtor -Wno-char-subscripts -Wwrite-strings -Wno-char-subscripts -Wreturn-type -Wcast-qual -Wcast-align -Wsign-promo -Woverloaded-virtual -fno-strict-aliasing -Wold-style-cast -Wno-unknown-pragmas")
    SET(CMAKE_CXX_FLAGS_DEBUG CACHE STRING "-ggdb")
    SET(CMAKE_C_FLAGS_DEBUG CACHE STRING "-ggdb")
  ELSEIF(MSVC)
    # This part is unnecessary 'casue the same is set by the lemon/core.h.
    # Still kept as an example.

    # SET(CXX_WARNING "/wd4250 /wd4267 /wd4355 /wd4503 /wd4800 /wd4996")

    # Suppressed warnings:
    # C4250: 'class1' : inherits 'class2::member' via dominance
    # C4267: conversion from 'size_t' to 'type', possible loss of data
    # C4355: 'this' : used in base member initializer list
    # C4503: 'function' : decorated name length exceeded, name was truncated
    # C4800: 'type' : forcing value to bool 'true' or 'false'
    #        (performance warning)
    # C4996: 'function': was declared deprecated
  ELSE()
    SET(CXX_WARNING "-Wall")
  ENDIF()
ENDIF()
SET(LEMON_CXX_WARNING_FLAGS ${CXX_WARNING} CACHE STRING "LEMON warning flags.")

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LEMON_CXX_WARNING_FLAGS}")

IF(MSVC)
  SET(CMAKE_CXX_FLAGS "/bigobj ${CMAKE_CXX_FLAGS}")
  SET( CMAKE_CXX_FLAGS_MAINTAINER "/WX ${CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING
    "Flags used by the C++ compiler during maintainer builds."
    )
  SET( CMAKE_C_FLAGS_MAINTAINER "/WX ${CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING
    "Flags used by the C compiler during maintainer builds."
    )
  SET( CMAKE_EXE_LINKER_FLAGS_MAINTAINER
    "${CMAKE_EXE_LINKER_FLAGS_DEBUG}" CACHE STRING
    "Flags used for linking binaries during maintainer builds."
    )
  SET( CMAKE_SHARED_LINKER_FLAGS_MAINTAINER
    "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}" CACHE STRING
    "Flags used by the shared libraries linker during maintainer builds."
    )
ELSE()
  SET( CMAKE_CXX_FLAGS_MAINTAINER "-Werror -ggdb -O0" CACHE STRING
    "Flags used by the C++ compiler during maintainer builds."
    )
  SET( CMAKE_C_FLAGS_MAINTAINER "-Werror -O0" CACHE STRING
    "Flags used by the C compiler during maintainer builds."
    )
  SET( CMAKE_EXE_LINKER_FLAGS_MAINTAINER
    "${CMAKE_EXE_LINKER_FLAGS_DEBUG}" CACHE STRING
    "Flags used for linking binaries during maintainer builds."
    )
  SET( CMAKE_SHARED_LINKER_FLAGS_MAINTAINER
    "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}" CACHE STRING
    "Flags used by the shared libraries linker during maintainer builds."
    )
ENDIF()

MARK_AS_ADVANCED(
    CMAKE_CXX_FLAGS_MAINTAINER
    CMAKE_C_FLAGS_MAINTAINER
    CMAKE_EXE_LINKER_FLAGS_MAINTAINER
    CMAKE_SHARED_LINKER_FLAGS_MAINTAINER )

IF(CMAKE_CONFIGURATION_TYPES)
  LIST(APPEND CMAKE_CONFIGURATION_TYPES Maintainer)
  LIST(REMOVE_DUPLICATES CMAKE_CONFIGURATION_TYPES)
  SET(CMAKE_CONFIGURATION_TYPES "${CMAKE_CONFIGURATION_TYPES}" CACHE STRING
      "Add the configurations that we need"
      FORCE)
 endif()

IF(NOT CMAKE_BUILD_TYPE)
  SET(CMAKE_BUILD_TYPE "Release")
ENDIF()

SET( CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING
    "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel Maintainer."
    FORCE )

SET_DIRECTORY_PROPERTIES(PROPERTIES
  COMPILE_DEFINITIONS_DEBUG "LEMON_ENABLE_DEBUG"
  COMPILE_DEFINITIONS_MAINTAINER "LEMON_ENABLE_DEBUG"
)

INCLUDE(CheckTypeSize)
CHECK_TYPE_SIZE("long long" LONG_LONG)
SET(LEMON_HAVE_LONG_LONG ${HAVE_LONG_LONG})

INCLUDE(FindThreads)

IF(NOT LEMON_THREADING)
  IF(CMAKE_USE_PTHREADS_INIT)
    SET(LEMON_THREADING "Pthread")
  ELSEIF(CMAKE_USE_WIN32_THREADS_INIT)
    SET(LEMON_THREADING "Win32")
  ELSE()
    SET(LEMON_THREADING "None")
  ENDIF()
ENDIF()

SET( LEMON_THREADING "${LEMON_THREADING}" CACHE STRING
  "Choose the threading library, options are: Pthread Win32 None."
  FORCE )

IF(LEMON_THREADING STREQUAL "Pthread")
  SET(LEMON_USE_PTHREAD TRUE)
ELSEIF(LEMON_THREADING STREQUAL "Win32")
  SET(LEMON_USE_WIN32_THREADS TRUE)
ENDIF()

ENABLE_TESTING()


INCLUDE(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++11" LEMON_CXX11)
IF(LEMON_CXX11)
  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
ENDIF()


IF(${CMAKE_BUILD_TYPE} STREQUAL "Maintainer")
  ADD_CUSTOM_TARGET(check ALL COMMAND ${CMAKE_CTEST_COMMAND})
ELSE()
  ADD_CUSTOM_TARGET(check COMMAND ${CMAKE_CTEST_COMMAND})
ENDIF()

ADD_SUBDIRECTORY(lemon)
IF(${CMAKE_SOURCE_DIR} STREQUAL ${PROJECT_SOURCE_DIR})
  ADD_SUBDIRECTORY(contrib)
  ADD_SUBDIRECTORY(demo)
  ADD_SUBDIRECTORY(tools)
  ADD_SUBDIRECTORY(doc)
  ADD_SUBDIRECTORY(test)
ENDIF()

CONFIGURE_FILE(
  ${PROJECT_SOURCE_DIR}/cmake/LEMONConfig.cmake.in
  ${PROJECT_BINARY_DIR}/cmake/LEMONConfig.cmake
  @ONLY
)
IF(UNIX)
  INSTALL(
    FILES ${PROJECT_BINARY_DIR}/cmake/LEMONConfig.cmake
    DESTINATION share/lemon/cmake
  )
ELSEIF(WIN32)
  INSTALL(
    FILES ${PROJECT_BINARY_DIR}/cmake/LEMONConfig.cmake
    DESTINATION cmake
  )
ENDIF()

CONFIGURE_FILE(
  ${PROJECT_SOURCE_DIR}/cmake/version.cmake.in
  ${PROJECT_BINARY_DIR}/cmake/version.cmake
  @ONLY
)

SET(ARCHIVE_BASE_NAME ${CMAKE_PROJECT_NAME})
STRING(TOLOWER ${ARCHIVE_BASE_NAME} ARCHIVE_BASE_NAME)
SET(ARCHIVE_NAME ${ARCHIVE_BASE_NAME}-${PROJECT_VERSION})
ADD_CUSTOM_TARGET(dist
  COMMAND cmake -E remove_directory ${ARCHIVE_NAME}
  COMMAND hg archive ${ARCHIVE_NAME}
  COMMAND cmake -E copy cmake/version.cmake ${ARCHIVE_NAME}/cmake/version.cmake
  COMMAND tar -czf ${ARCHIVE_BASE_NAME}-nodoc-${PROJECT_VERSION}.tar.gz ${ARCHIVE_NAME}
  COMMAND zip -r ${ARCHIVE_BASE_NAME}-nodoc-${PROJECT_VERSION}.zip ${ARCHIVE_NAME}
  COMMAND cmake -E copy_directory doc/html ${ARCHIVE_NAME}/doc/html
  COMMAND tar -czf ${ARCHIVE_NAME}.tar.gz ${ARCHIVE_NAME}
  COMMAND zip -r ${ARCHIVE_NAME}.zip ${ARCHIVE_NAME}
  COMMAND cmake -E copy_directory doc/html ${ARCHIVE_BASE_NAME}-doc-${PROJECT_VERSION}
  COMMAND tar -czf ${ARCHIVE_BASE_NAME}-doc-${PROJECT_VERSION}.tar.gz ${ARCHIVE_BASE_NAME}-doc-${PROJECT_VERSION}
  COMMAND zip -r ${ARCHIVE_BASE_NAME}-doc-${PROJECT_VERSION}.zip ${ARCHIVE_BASE_NAME}-doc-${PROJECT_VERSION}
  COMMAND cmake -E remove_directory ${ARCHIVE_NAME}
  COMMAND cmake -E remove_directory ${ARCHIVE_BASE_NAME}-doc-${PROJECT_VERSION}
  DEPENDS html
  WORKING_DIRECTORY ${PROJECT_BINARY_DIR})

# CPACK config (Basically for NSIS)
IF(${CMAKE_SOURCE_DIR} STREQUAL ${PROJECT_SOURCE_DIR})
  SET(CPACK_PACKAGE_NAME ${PROJECT_NAME})
  SET(CPACK_PACKAGE_VENDOR "EGRES")
  SET(CPACK_PACKAGE_DESCRIPTION_SUMMARY
    "LEMON - Library for Efficient Modeling and Optimization in Networks")
  SET(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")

  SET(CPACK_PACKAGE_VERSION ${PROJECT_VERSION})

  SET(CPACK_PACKAGE_INSTALL_DIRECTORY
    "${PROJECT_NAME} ${PROJECT_VERSION}")
  SET(CPACK_PACKAGE_INSTALL_REGISTRY_KEY
    "${PROJECT_NAME} ${PROJECT_VERSION}")

  SET(CPACK_COMPONENTS_ALL headers library html_documentation bin)

  SET(CPACK_COMPONENT_HEADERS_DISPLAY_NAME "C++ headers")
  SET(CPACK_COMPONENT_LIBRARY_DISPLAY_NAME "Dynamic-link library")
  SET(CPACK_COMPONENT_BIN_DISPLAY_NAME "Command line utilities")
  SET(CPACK_COMPONENT_HTML_DOCUMENTATION_DISPLAY_NAME "HTML documentation")

  SET(CPACK_COMPONENT_HEADERS_DESCRIPTION
    "C++ header files")
  SET(CPACK_COMPONENT_LIBRARY_DESCRIPTION
    "DLL and import library")
  SET(CPACK_COMPONENT_BIN_DESCRIPTION
    "Command line utilities")
  SET(CPACK_COMPONENT_HTML_DOCUMENTATION_DESCRIPTION
    "Doxygen generated documentation")

  SET(CPACK_COMPONENT_HEADERS_DEPENDS library)

  SET(CPACK_COMPONENT_HEADERS_GROUP "Development")
  SET(CPACK_COMPONENT_LIBRARY_GROUP "Development")
  SET(CPACK_COMPONENT_HTML_DOCUMENTATION_GROUP "Documentation")

  SET(CPACK_COMPONENT_GROUP_DEVELOPMENT_DESCRIPTION
    "Components needed to develop software using LEMON")
  SET(CPACK_COMPONENT_GROUP_DOCUMENTATION_DESCRIPTION
    "Documentation of LEMON")

  SET(CPACK_ALL_INSTALL_TYPES Full Developer)

  SET(CPACK_COMPONENT_HEADERS_INSTALL_TYPES Developer Full)
  SET(CPACK_COMPONENT_LIBRARY_INSTALL_TYPES Developer Full)
  SET(CPACK_COMPONENT_HTML_DOCUMENTATION_INSTALL_TYPES Full)

  SET(CPACK_GENERATOR "NSIS")
  SET(CPACK_NSIS_MUI_ICON "${PROJECT_SOURCE_DIR}/cmake/nsis/lemon.ico")
  SET(CPACK_NSIS_MUI_UNIICON "${PROJECT_SOURCE_DIR}/cmake/nsis/uninstall.ico")
  #SET(CPACK_PACKAGE_ICON "${PROJECT_SOURCE_DIR}/cmake/nsis\\\\installer.bmp")
  SET(CPACK_NSIS_INSTALLED_ICON_NAME "bin\\\\lemon.ico")
  SET(CPACK_NSIS_DISPLAY_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY} ${PROJECT_NAME}")
  SET(CPACK_NSIS_HELP_LINK "http:\\\\\\\\lemon.cs.elte.hu")
  SET(CPACK_NSIS_URL_INFO_ABOUT "http:\\\\\\\\lemon.cs.elte.hu")
  SET(CPACK_NSIS_CONTACT "lemon-user@lemon.cs.elte.hu")
  SET(CPACK_NSIS_CREATE_ICONS_EXTRA "
    CreateShortCut \\\"$SMPROGRAMS\\\\$STARTMENU_FOLDER\\\\Documentation.lnk\\\" \\\"$INSTDIR\\\\share\\\\doc\\\\index.html\\\"
    ")
  SET(CPACK_NSIS_DELETE_ICONS_EXTRA "
    !insertmacro MUI_STARTMENU_GETFOLDER Application $MUI_TEMP
    Delete \\\"$SMPROGRAMS\\\\$MUI_TEMP\\\\Documentation.lnk\\\"
    ")

  INCLUDE(CPack)
ENDIF()