# Copyright (c) 2022, Intel Corporation
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
# * Neither the name of Intel Corporation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
cmake_minimum_required(VERSION 3.5)

project(PCM)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED True)

set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)

message(STATUS "System: ${CMAKE_SYSTEM}")
if(UNIX AND NOT APPLE)
    if(${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
        set(FREE_BSD TRUE)
    else()
        set(LINUX TRUE)
    endif()
endif()

if(UNIX)  # APPLE, LINUX, FREE_BSD
    if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
      set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Build type (default Release)" FORCE)
    endif()
    message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")

    message(STATUS "initial CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
    message(STATUS "initial CMAKE_C_FLAGS: ${CMAKE_C_FLAGS}")

    # required PCM common flags
    set (PCM_COMMON_FLAGS "-Wno-unknown-pragmas -fPIC")

    if(LINUX)
       set (PCM_COMMON_FLAGS "${PCM_COMMON_FLAGS} -Wextra -DPCM_USE_PERF")
    endif(LINUX)

    # adding the required PCM common flags
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${PCM_COMMON_FLAGS}")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${PCM_COMMON_FLAGS}")

    message(STATUS "CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
    message(STATUS "CMAKE_C_FLAGS: ${CMAKE_C_FLAGS}")

    set(PCM_OPTIONAL_FLAGS "-Wall")
    set(CMAKE_CXX_FLAGS_RELEASE "${PCM_OPTIONAL_FLAGS} -O3")
    set(CMAKE_CXX_FLAGS_DEBUG "${PCM_OPTIONAL_FLAGS} -O0 -g")
    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${PCM_OPTIONAL_FLAGS} -O3 -g")
    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
    set(CMAKE_C_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
    set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")

endif(UNIX)

#######################
# Install
#######################

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)

if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT OR ${CMAKE_INSTALL_PREFIX} STREQUAL "/usr")  # default is "/usr/local", pcm default is "/usr"
  set(CMAKE_INSTALL_PREFIX "/usr" CACHE PATH "..." FORCE)
else()
  set(CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/usr" CACHE PATH "..." FORCE)
endif()

add_subdirectory(src)
add_subdirectory(examples)
add_subdirectory(tests)

message(STATUS "Install directory: ${CMAKE_INSTALL_PREFIX}")

#######################
# CPack (only UNIX)
#######################
if(UNIX)
    if(EXISTS "/etc/debian_version")      # for Debian family
        set(CPACK_GENERATOR "DEB")
        message(STATUS "CPACK_GENERATOR is DEB")
    elseif(EXISTS "/etc/redhat-release")  # for RHEL, Fedora, CentOs
        set(CPACK_GENERATOR "RPM")
        message(STATUS "CPACK_GENERATOR is RPM")
    else()
        if(EXISTS "/etc/os-release")
            file(READ "/etc/os-release" OS_PARAMS)
            string(REGEX MATCH "suse" OUT ${OS_PARAMS})  # for Suse-like systems
            if(OUT STREQUAL "suse")
                 set(CPACK_GENERATOR "RPM")
                 message(STATUS "CPACK_GENERATOR is RPM")
            else()
                set(CPACK_GENERATOR "TXZ")
                set(CPACK_SET_DESTDIR ON)
                message(STATUS "CPACK_GENERATOR is TXZ")
            endif()
        else()
            set(CPACK_GENERATOR "TXZ")
            set(CPACK_SET_DESTDIR ON)
            message(STATUS "CPACK_GENERATOR is TXZ")
        endif()
    endif()

    set(CPACK_PACKAGE_CONTACT "intel <roman.dementiev@intel.com>")
    set(CPACK_PACKAGE_NAME    "pcm")
    set(CPACK_PACKAGE_VERSION "0000")

    set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Processor Counter Monitor (PCM)")
    set(CPACK_PACKAGE_DESCRIPTION "\
    Processor Counter Monitor (PCM) is an application programming\n\
    interface (API) and a set of tools based on the API to monitor\n\
    performance and energy metrics of Intel(r) Core(tm), Xeon(r), Atom(tm)\n\
    and Xeon Phi(tm) processors. PCM works on Linux, Windows, Mac OS X,\n\
    FreeBSD and DragonFlyBSD operating systems.")
    set(CPACK_RPM_PACKAGE_DESCRIPTION ${CPACK_PACKAGE_DESCRIPTION})

    set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
    set(CPACK_RPM_PACKAGE_LICENSE   "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")

    set(CPACK_PACKAGE_INSTALL_DIRECTORY             ${CMAKE_INSTALL_PREFIX})
    set(CPACK_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)

    set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
    set(CPACK_RPM_PACKAGE_RELOCATABLE  TRUE)

    set(CPACK_DEB_COMPONENT_INSTALL ON)
    set(CPACK_RPM_COMPONENT_INSTALL ON)

    include (CPack)
endif(UNIX)
