# Copyright (c) 2013-2021, Intel Corporation
#
# 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 2.8.6)

project(PT)

# versioning
#
# the major and the minor number define the supported Intel PT set.
#
# a build number and a version extension can be optionally specified.
#
set(PT_VERSION_MAJOR 1)
set(PT_VERSION_MINOR 6)
set(PT_VERSION_BUILD "5" CACHE STRING "")
set(PT_VERSION_EXT "" CACHE STRING "")

set(PT_VERSION "${PT_VERSION_MAJOR}.${PT_VERSION_MINOR}.${PT_VERSION_BUILD}")

add_definitions(
  -DPT_VERSION_MAJOR=${PT_VERSION_MAJOR}
  -DPT_VERSION_MINOR=${PT_VERSION_MINOR}
  -DPT_VERSION_BUILD=${PT_VERSION_BUILD}
  -DPT_VERSION_EXT=\"${PT_VERSION_EXT}\"
)

include(GNUInstallDirs)
include(FindUnixCommands)
include(CheckCCompilerFlag)

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

set(CMAKE_COLOR_MAKEFILE   OFF)
set(CMAKE_VERBOSE_MAKEFILE ON)

set(CMAKE_MACOSX_RPATH ON)

option(FEATURE_THREADS "A small amount of multi-threading support." ON)
if (FEATURE_THREADS)
  add_definitions(-DFEATURE_THREADS)
endif (FEATURE_THREADS)

option(DEVBUILD "Enable compiler warnings and turn them into errors." OFF)

option(PTDUMP "Enable ptdump, a packet dumper")
option(PTXED  "Enable ptxed, an instruction flow dumper")
option(PTTC   "Enable pttc, a test compiler")
option(PTUNIT "Enable ptunit, a unit test system and libipt unit tests")
option(MAN "Enable man pages (requires pandoc)." OFF)

set(PTT OFF)
if (BASH AND PTDUMP AND PTXED AND PTTC)
  set(PTT ON)
endif ()

if (PTUNIT OR PTT)
  ENABLE_TESTING()
endif()

include_directories(
  include
  ${CMAKE_CURRENT_BINARY_DIR}/libipt/include
)

if (PTUNIT)
  include_directories(
    ptunit/include
  )
endif (PTUNIT)


function(add_cflag_if_available option guard)

  check_c_compiler_flag(${option} ${guard})
  if (${guard})
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${option}" PARENT_SCOPE)
  endif (${guard})

endfunction(add_cflag_if_available)


if (CMAKE_HOST_WIN32)
  include_directories(
    include/windows
  )

  add_definitions(
    # cl spells inline __inline in C
    #
    /Dinline=__inline

    # cl spells strtoll _strtoi64
    #
    /Dstrtoll=_strtoi64

    # cl spells strtoull _strtoui64
    #
    /Dstrtoull=_strtoui64

    # avoid annoying warnings about unsecure standard functions
    #
    /D_CRT_SECURE_NO_WARNINGS
  )

  # enable parallel build
  #
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")

  if (DEVBUILD)
    # compiler warnings
    #
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")

    # warnings are errors
    #
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /WX")
  endif (DEVBUILD)

  if (CMAKE_C_COMPILER_ID MATCHES "MSVC")
    # prevent complaints on:
    # - do {} while(0) constructs
    # - int arr[] constructs
    #
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4127")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4200")

  endif (CMAKE_C_COMPILER_ID MATCHES "MSVC")

endif (CMAKE_HOST_WIN32)

if (CMAKE_HOST_UNIX)
  include_directories(
    include/posix
  )

  add_definitions(
    -D_POSIX_C_SOURCE=200809L
  )

  option(GCOV "Compile for GNU code coverage analysis." OFF)

  if (GCOV)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ftest-coverage")

    link_libraries(gcov)
  endif (GCOV)

  if (FEATURE_THREADS)
    link_libraries(pthread)
  endif (FEATURE_THREADS)

  # set the language
  #
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")

  # windows-like dll export model
  #
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")

  if (DEVBUILD)
    # compiler warnings
    #
    if (CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Weverything")

      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-disabled-macro-expansion")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-covered-switch-default")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-conversion")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-switch-enum")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-cast-align")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-padded")
    else (CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wextra")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pedantic")

      add_cflag_if_available("-Wimplicit-fallthrough=5"
        HAVE_C_Wimplicit_fallthrough)
      add_cflag_if_available("-Wno-format-truncation"
        HAVE_C_Wno_format_truncation)
    endif (CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")

    # warnings are errors
    #
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
  endif (DEVBUILD)

endif (CMAKE_HOST_UNIX)


function(add_ptunit_test_base name)
  if (PTUNIT)
    add_executable(${name} ${ARGN})
    target_link_libraries(${name} ptunit)

    add_test(NAME ${name} COMMAND ${name})
  endif (PTUNIT)
endfunction(add_ptunit_test_base)

function(add_ptunit_c_test name)
    add_ptunit_test_base(ptunit-${name} test/src/ptunit-${name}.c ${ARGN})
endfunction(add_ptunit_c_test)

function(add_ptunit_cpp_test name)
    add_ptunit_test_base(ptunit-${name} test/src/ptunit-${name}.cpp ${ARGN})
endfunction(add_ptunit_cpp_test)

function(add_ptunit_libraries name)
  if (PTUNIT)
    target_link_libraries(ptunit-${name} ${ARGN})
  endif (PTUNIT)
endfunction(add_ptunit_libraries)


add_subdirectory(libipt)

if (PTDUMP)
  add_subdirectory(ptdump)
endif (PTDUMP)
if (PTXED)
  add_subdirectory(ptxed)
endif (PTXED)
if (PTTC)
  add_subdirectory(pttc)
endif (PTTC)
if (PTUNIT)
  add_subdirectory(ptunit)
endif (PTUNIT)
if (PTT)
  add_subdirectory(test)
endif (PTT)
if (MAN)
  add_subdirectory(doc/man)
endif (MAN)