#
# Copyright 2010-2015 Ettus Research LLC
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

########################################################################
#IF(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
#    MESSAGE(FATAL_ERROR "Prevented in-tree built. This is bad practice.")
#ENDIF(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})

########################################################################
# Project setup
########################################################################
CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
PROJECT(UHD CXX C)
ENABLE_TESTING()

#make sure our local CMake Modules path comes first
list(INSERT CMAKE_MODULE_PATH 0 ${CMAKE_SOURCE_DIR}/cmake/Modules)

########################################################################
# Packaging Variables
########################################################################

SET(LIBUHD_PKG ${LIBUHD_PKG} CACHE BOOL "Build Debian libuhd003 package")
SET(LIBUHDDEV_PKG ${LIBUHDDEV_PKG} CACHE BOOL "Build Debian libuhd-dev package")
SET(UHDHOST_PKG ${UHDPOST_PKG} CACHE BOOL "Build Debian uhd-host package")

INCLUDE(UHDComponent) #enable components
INCLUDE(UHDPackage)   #setup cpack

########################################################################
# Install Dirs
########################################################################
#when the library suffix should be 64 (applies to redhat linux family)
IF(NOT DEFINED LIB_SUFFIX AND REDHAT AND CMAKE_SYSTEM_PROCESSOR MATCHES "64$")
    SET(LIB_SUFFIX 64)
ENDIF()
SET(LIB_SUFFIX ${LIB_SUFFIX} CACHE STRING "lib directory suffix")
SET(RUNTIME_DIR bin)
SET(LIBRARY_DIR lib${LIB_SUFFIX})
SET(INCLUDE_DIR include)
SET(PKG_DATA_DIR share/uhd)
IF(NOT DEFINED PKG_LIB_DIR)
    SET(PKG_LIB_DIR ${LIBRARY_DIR}/uhd)
ENDIF()
SET(PKG_DOC_DIR share/doc/uhd)
SET(PKG_MAN_DIR share/man/man1)

########################################################################
# UHD Image Directories
########################################################################
IF(NOT DEFINED UHD_IMAGES_DIR)
    IF(DEFINED FPGA_IMAGES_DIR)
        SET(UHD_IMAGES_DIR ${FPGA_IMAGES_DIR})
    ELSE(DEFINED FPGA_IMAGES_DIR)
        FILE(TO_NATIVE_PATH ${CMAKE_INSTALL_PREFIX}/share/uhd/images using_images_dir)
        SET(UHD_IMAGES_DIR ${using_images_dir})
    ENDIF(DEFINED FPGA_IMAGES_DIR)
ENDIF(NOT DEFINED UHD_IMAGES_DIR)

OPTION(UHD_IMAGES_DIR "Path to installed UHD image binaries.")
MESSAGE( STATUS "Using UHD Images Directory: ${UHD_IMAGES_DIR}" )
ADD_DEFINITIONS(-DUHD_IMAGES_DIR=${UHD_IMAGES_DIR})

IF(DEFINED USE_NIUSRP_WINREG_KEY)
    ADD_DEFINITIONS(-DUSE_NIUSRP_WINREG_KEY)
ENDIF(DEFINED USE_NIUSRP_WINREG_KEY)

########################################################################
# Local Include Dir
########################################################################
INCLUDE_DIRECTORIES(${CMAKE_BINARY_DIR}/include)
INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include)

########################################################################
# Static Lib Configuration
########################################################################
OPTION(ENABLE_STATIC_LIBS "Enable building of static libraries" OFF)
IF(ENABLE_STATIC_LIBS)
    MESSAGE(STATUS "Building Static Libraries: ${ENABLE_STATIC_LIBS}")
ENDIF(ENABLE_STATIC_LIBS)

########################################################################
# On Apple only, set install name and use rpath correctly, if not already set
########################################################################
IF(APPLE)
    IF(NOT CMAKE_INSTALL_NAME_DIR)
        SET(CMAKE_INSTALL_NAME_DIR
            ${CMAKE_INSTALL_PREFIX}/${LIBRARY_DIR} CACHE
            PATH "Library Install Name Destination Directory" FORCE)
    ENDIF(NOT CMAKE_INSTALL_NAME_DIR)
    IF(NOT CMAKE_INSTALL_RPATH)
        SET(CMAKE_INSTALL_RPATH
            ${CMAKE_INSTALL_PREFIX}/${LIBRARY_DIR} CACHE
            PATH "Library Install RPath" FORCE)
    ENDIF(NOT CMAKE_INSTALL_RPATH)
    IF(NOT CMAKE_BUILD_WITH_INSTALL_RPATH)
        SET(CMAKE_BUILD_WITH_INSTALL_RPATH ON CACHE
            BOOL "Do Build Using Library Install RPath" FORCE)
    ENDIF(NOT CMAKE_BUILD_WITH_INSTALL_RPATH)
ENDIF(APPLE)

########################################################################
# Optional Compiler Flags
########################################################################
INCLUDE(CheckCXXCompilerFlag)
MACRO(UHD_ADD_OPTIONAL_CXX_COMPILER_FLAG flag have)
    CHECK_CXX_COMPILER_FLAG(${flag} ${have})
    IF(${have})
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
    ENDIF(${have})
ENDMACRO(UHD_ADD_OPTIONAL_CXX_COMPILER_FLAG)

#select the release build type by default to get optimization flags
IF(NOT CMAKE_BUILD_TYPE)
   SET(CMAKE_BUILD_TYPE "Release")
   MESSAGE(STATUS "Build type not specified: defaulting to release.")
ENDIF(NOT CMAKE_BUILD_TYPE)
SET(CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING "")

#force UHD_RELEASE_MODE to be a string for cmake-gui
SET(UHD_RELEASE_MODE "${UHD_RELEASE_MODE}" CACHE STRING "UHD Release Mode")

IF(CMAKE_COMPILER_IS_GNUCXX)
    IF(STRIP_BINARIES)
        IF(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s")
        ENDIF(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
    ENDIF(STRIP_BINARIES)
    ADD_DEFINITIONS(-Wall)
    ADD_DEFINITIONS(-Wextra)
    ADD_DEFINITIONS(-Wsign-compare)
    #ADD_DEFINITIONS(-Wconversion)
    #ADD_DEFINITIONS(-pedantic)
    #ADD_DEFINITIONS(-ansi)
    IF(NOT WIN32)
        #only export symbols that are declared to be part of the uhd api (non dll platforms)
        UHD_ADD_OPTIONAL_CXX_COMPILER_FLAG(-fvisibility=hidden HAVE_VISIBILITY_HIDDEN)
        UHD_ADD_OPTIONAL_CXX_COMPILER_FLAG(-fvisibility-inlines-hidden HAVE_VISIBILITY_INLINES_HIDDEN)
    ENDIF(NOT WIN32)
ENDIF(CMAKE_COMPILER_IS_GNUCXX)

IF(MSVC)
    INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/cmake/msvc)
    ADD_DEFINITIONS( #stop all kinds of compatibility warnings
        -D_SCL_SECURE_NO_WARNINGS
        -D_SCL_SECURE_NO_DEPRECATE
        -D_CRT_SECURE_NO_WARNINGS
        -D_CRT_SECURE_NO_DEPRECATE
        -D_CRT_NONSTDC_NO_WARNINGS
        -D_CRT_NONSTDC_NO_DEPRECATE
    )
    ADD_DEFINITIONS(/MP) #multi-threaded build
    ADD_DEFINITIONS(/bigobj) #Increases the number of addressable sections in an .obj file.
ENDIF(MSVC)

IF(CYGWIN)
    ADD_DEFINITIONS(-D__USE_W32_SOCKETS) #boost asio says we need this
ENDIF(CYGWIN)

IF(WIN32)
    ADD_DEFINITIONS(-D_WIN32_WINNT=0x0501) #minimum version required is windows xp
    ADD_DEFINITIONS(-DNOMINMAX) #disables stupidity and enables std::min and std::max
ENDIF(WIN32)

########################################################################
# Setup Boost
########################################################################
MESSAGE(STATUS "")
MESSAGE(STATUS "Configuring Boost C++ Libraries...")
SET(BOOST_REQUIRED_COMPONENTS
    date_time
    filesystem
    program_options
    regex
    system
    thread
    unit_test_framework
    serialization
)

IF(UNIX AND NOT BOOST_ROOT AND EXISTS "/usr/lib64")
    LIST(APPEND BOOST_LIBRARYDIR "/usr/lib64") #fedora 64-bit fix
ENDIF(UNIX AND NOT BOOST_ROOT AND EXISTS "/usr/lib64")

IF(MSVC)
    SET(BOOST_ALL_DYN_LINK "${BOOST_ALL_DYN_LINK}" CACHE BOOL "boost enable dynamic linking")
    IF(BOOST_ALL_DYN_LINK)
        ADD_DEFINITIONS(-DBOOST_ALL_DYN_LINK) #setup boost auto-linking in msvc
    ELSE(BOOST_ALL_DYN_LINK)
        SET(BOOST_REQUIRED_COMPONENTS) #empty components list for static link
    ENDIF(BOOST_ALL_DYN_LINK)
ENDIF(MSVC)

SET(Boost_ADDITIONAL_VERSIONS
    "1.46.0" "1.46" "1.47.0" "1.47" "1.48.0" "1.48" "1.48.0" "1.49" "1.50.0" "1.50"
    "1.51.0" "1.51" "1.52.0" "1.52" "1.53.0" "1.53" "1.54.0" "1.54" "1.55.0" "1.55"
    "1.56.0" "1.56"
)
FIND_PACKAGE(Boost 1.46 COMPONENTS ${BOOST_REQUIRED_COMPONENTS})

INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
LINK_DIRECTORIES(${Boost_LIBRARY_DIRS})

MESSAGE(STATUS "Boost include directories: ${Boost_INCLUDE_DIRS}")
MESSAGE(STATUS "Boost library directories: ${Boost_LIBRARY_DIRS}")
MESSAGE(STATUS "Boost libraries: ${Boost_LIBRARIES}")

########################################################################
# Additional settings for build environment
########################################################################
INCLUDE(UHDGlobalDefs)

########################################################################
# Check Python Modules
########################################################################
INCLUDE(UHDPython)

PYTHON_CHECK_MODULE(
    "Python version 2.6 or greater"
    "platform" "platform.python_version() >= '2.6'"
    HAVE_PYTHON_PLAT_MIN_VERSION
)

PYTHON_CHECK_MODULE(
    "Mako templates 0.4 or greater"
    "mako" "mako.__version__ >= '0.4.2'"
    HAVE_PYTHON_MODULE_MAKO
)

########################################################################
# Create Uninstall Target
########################################################################
CONFIGURE_FILE(
    ${CMAKE_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in
    ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
@ONLY)

ADD_CUSTOM_TARGET(uninstall
    ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
)

########################################################################
# Install Package Docs
########################################################################
UHD_INSTALL(FILES
    ${CMAKE_CURRENT_SOURCE_DIR}/README.md
    ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE
    DESTINATION ${PKG_DOC_DIR}
    COMPONENT readme
)

########################################################################
# Images download directory for utils/uhd_images_downloader.py
########################################################################
#{{{IMG_SECTION
# This section is written automatically by /images/create_imgs_package.py
# Any manual changes in here will be overwritten.
SET(UHD_IMAGES_MD5SUM "1126aecd7b94e7c77e93ea124d1e75a2")
SET(UHD_IMAGES_DOWNLOAD_SRC "uhd-images_003.009.git-269-gb6ad4c05.zip")
#}}}

########################################################################
# Register top level components
########################################################################
LIBUHD_REGISTER_COMPONENT("LibUHD" ENABLE_LIBUHD ON "Boost_FOUND;HAVE_PYTHON_PLAT_MIN_VERSION;HAVE_PYTHON_MODULE_MAKO" OFF ON)
LIBUHD_REGISTER_COMPONENT("LibUHD - C API" ENABLE_C_API ON "ENABLE_LIBUHD" OFF OFF)
LIBUHD_REGISTER_COMPONENT("Examples" ENABLE_EXAMPLES ON "ENABLE_LIBUHD" OFF OFF)
LIBUHD_REGISTER_COMPONENT("Utils" ENABLE_UTILS ON "ENABLE_LIBUHD" OFF OFF)
LIBUHD_REGISTER_COMPONENT("Tests" ENABLE_TESTS ON "ENABLE_LIBUHD" OFF OFF)

########################################################################
# Check for fpga-src submodule
########################################################################
SET(HAS_FPGA_SUBMODULE FALSE)
EXECUTE_PROCESS(
    COMMAND ${PYTHON_EXECUTABLE} -c "import os; print(os.path.abspath(os.path.join('${CMAKE_SOURCE_DIR}', '..', 'fpga-src')))"
    OUTPUT_VARIABLE FPGA_SUBMODULE_DIR
    OUTPUT_STRIP_TRAILING_WHITESPACE
)
IF(EXISTS "${FPGA_SUBMODULE_DIR}/docs/fpga.md")
    SET(HAS_FPGA_SUBMODULE TRUE)
    MESSAGE(STATUS "")
    MESSAGE(STATUS "Found FPGA submodule: ${FPGA_SUBMODULE_DIR}")
ENDIF(EXISTS "${FPGA_SUBMODULE_DIR}/docs/fpga.md")

########################################################################
# Add the subdirectories
########################################################################
ADD_SUBDIRECTORY(docs)

IF(ENABLE_LIBUHD)
    ADD_SUBDIRECTORY(lib)
ENDIF(ENABLE_LIBUHD)

ADD_SUBDIRECTORY(include)

IF(ENABLE_EXAMPLES)
    ADD_SUBDIRECTORY(examples)
ENDIF(ENABLE_EXAMPLES)

IF(ENABLE_TESTS)
    ADD_SUBDIRECTORY(tests)
ENDIF(ENABLE_TESTS)

IF(ENABLE_UTILS)
    ADD_SUBDIRECTORY(utils)
ENDIF(ENABLE_UTILS)

########################################################################
# Create Pkg Config File
########################################################################
FOREACH(inc ${Boost_INCLUDE_DIRS})
    LIST(APPEND UHD_PC_CFLAGS "-I${inc}")
ENDFOREACH(inc)

FOREACH(lib ${Boost_LIBRARY_DIRS})
    LIST(APPEND UHD_PC_LIBS "-L${lib}")
ENDFOREACH(lib)

#use space-separation format for the pc file
STRING(REPLACE ";" " " UHD_PC_REQUIRES "${UHD_PC_REQUIRES}")
STRING(REPLACE ";" " " UHD_PC_CFLAGS "${UHD_PC_CFLAGS}")
STRING(REPLACE ";" " " UHD_PC_LIBS "${UHD_PC_LIBS}")

#unset these vars to avoid hard-coded paths to cross environment
IF(CMAKE_CROSSCOMPILING)
    SET(UHD_PC_CFLAGS)
    SET(UHD_PC_LIBS)
ENDIF(CMAKE_CROSSCOMPILING)

CONFIGURE_FILE(
    ${CMAKE_CURRENT_SOURCE_DIR}/uhd.pc.in
    ${CMAKE_CURRENT_BINARY_DIR}/uhd.pc
@ONLY)

UHD_INSTALL(
    FILES ${CMAKE_CURRENT_BINARY_DIR}/uhd.pc
    DESTINATION ${LIBRARY_DIR}/pkgconfig
    COMPONENT "devel"
)

########################################################################
# Create and Install UHD cmake files
########################################################################
IF(NOT CMAKE_MODULES_DIR)
   SET(CMAKE_MODULES_DIR lib${LIB_SUFFIX}/cmake)
ENDIF(NOT CMAKE_MODULES_DIR)

# UHDConfig.cmake needs UHD_LINK_LIST_STATIC set:
LIST(APPEND UHD_LINK_LIST_STATIC "dl")
LIST(APPEND UHD_LINK_LIST_STATIC "pthread")
FOREACH(Boost_Comp ${BOOST_REQUIRED_COMPONENTS})
    IF(NOT ${Boost_Comp} STREQUAL "unit_test_framework")
        LIST(APPEND UHD_LINK_LIST_STATIC "boost_${Boost_Comp}")
    ENDIF(NOT ${Boost_Comp} STREQUAL "unit_test_framework")
ENDFOREACH(Boost_Comp)
IF(ENABLE_USB)
    LIST(APPEND UHD_LINK_LIST_STATIC "usb-1.0")
ENDIF(ENABLE_USB)

CONFIGURE_FILE(
    ${CMAKE_SOURCE_DIR}/cmake/Modules/UHDConfigVersion.cmake.in
    ${CMAKE_BINARY_DIR}/cmake/Modules/UHDConfigVersion.cmake
    @ONLY
)
CONFIGURE_FILE(
    ${CMAKE_SOURCE_DIR}/cmake/Modules/UHDConfig.cmake.in
    ${CMAKE_BINARY_DIR}/cmake/Modules/UHDConfig.cmake
    @ONLY
)

SET(cmake_configs
    ${CMAKE_BINARY_DIR}/cmake/Modules/UHDConfig.cmake
    ${CMAKE_BINARY_DIR}/cmake/Modules/UHDConfigVersion.cmake
)

UHD_INSTALL(
    FILES ${cmake_configs}
    DESTINATION ${CMAKE_MODULES_DIR}/uhd
    COMPONENT "devel"
)

########################################################################
# Handle pre-built UHD Images for packaging
########################################################################
IF(DEFINED UHD_IMAGES_SRC_DIR AND EXISTS "${UHD_IMAGES_SRC_DIR}")
    FILE(GLOB_RECURSE _image_files "${UHD_IMAGES_SRC_DIR}/*")
    MESSAGE(STATUS "Using images:")
    FOREACH(_img ${_image_files})
        MESSAGE(STATUS "  ${_img}")
    ENDFOREACH(_img)
    UHD_INSTALL(FILES ${_image_files} DESTINATION ${PKG_DATA_DIR}/images COMPONENT images)
ENDIF(DEFINED UHD_IMAGES_SRC_DIR AND EXISTS "${UHD_IMAGES_SRC_DIR}")

########################################################################
# Print Summary
########################################################################
IF(LIBUHD_PKG)
    MESSAGE(STATUS "")
    SET(PRINT_APPEND " (Debian libuhd003 package configuration)")
ELSEIF(LIBUHDDEV_PKG)
    MESSAGE(STATUS "")
    SET(PRINT_APPEND " (Debian libuhd-dev package configuration)")
ELSEIF(UHDHOST_PKG)
    MESSAGE(STATUS "")
    SET(PRINT_APPEND " (Debian uhd-host package configuration)")
ENDIF(LIBUHD_PKG)
UHD_PRINT_COMPONENT_SUMMARY()
IF(UHD_VERSION_DEVEL)
    MESSAGE(STATUS "******************************************************")
    IF(UHD_VERSION_PATCH STREQUAL "git")
        MESSAGE(STATUS "* You are building the UHD development master branch.")
        MESSAGE(STATUS "* For production code, we recommend our stable,")
        MESSAGE(STATUS "* releases or using the release branch (maint).")
    ELSE()
        MESSAGE(STATUS "* You are building a development branch of UHD.")
        MESSAGE(STATUS "* These branches are designed to provide early access")
        MESSAGE(STATUS "* to UHD and USRP features, but should be considered")
        MESSAGE(STATUS "* unstable and/or experimental!")
    ENDIF(UHD_VERSION_PATCH STREQUAL "git")
    MESSAGE(STATUS "******************************************************")
ENDIF(UHD_VERSION_DEVEL)
MESSAGE(STATUS "Building version: ${UHD_VERSION}${PRINT_APPEND}")
MESSAGE(STATUS "Using install prefix: ${CMAKE_INSTALL_PREFIX}")