# Copyright (C) 2011-2019 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
# GNSS-SDR 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.
#
# GNSS-SDR 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 GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.

# Tries to find Gperftools.
#
# Usage of this module as follows:
#
# find_package(GPERFTOOLS)
#
# Variables used by this module, they can change the default behaviour and need
# to be set before calling find_package:
#
# GPERFTOOLS_ROOT Set this variable to the root installation of
# Gperftools if the module has problems finding
# the proper installation path.
#
# Variables defined by this module:
#
# GPERFTOOLS_FOUND System has Gperftools libs/headers
# GPERFTOOLS_LIBRARIES The Gperftools libraries (tcmalloc & profiler)
# GPERFTOOLS_INCLUDE_DIR The location of Gperftools headers
#
# Provides the following imported targets:
# Gperftools::tcmalloc
# Gperftools::profiler
# Gperftools::gperftools
#

if(NOT COMMAND feature_summary)
    include(FeatureSummary)
endif()

find_library(GPERFTOOLS_TCMALLOC
  NAMES tcmalloc
  HINTS /usr/lib
        /usr/lib64
        /usr/local/lib
        /usr/local/lib64
        /opt/local/lib
        ${Gperftools_ROOT_DIR}/lib
        ${GPERFTOOLS_ROOT}/lib
        $ENV{GPERFTOOLS_ROOT}/lib
        ${GPERFTOOLS_ROOT}/lib64
        $ENV{GPERFTOOLS_ROOT}/lib64

)

find_library(GPERFTOOLS_PROFILER
  NAMES profiler
  HINTS /usr/lib
        /usr/lib64
        /usr/local/lib
        /usr/local/lib64
        /opt/local/lib
        ${Gperftools_ROOT_DIR}/lib
        ${GPERFTOOLS_ROOT}/lib
        $ENV{GPERFTOOLS_ROOT}/lib
        ${GPERFTOOLS_ROOT}/lib64
        $ENV{GPERFTOOLS_ROOT}/lib64
)

find_library(GPERFTOOLS_TCMALLOC_AND_PROFILER
  NAMES tcmalloc_and_profiler
  HINTS /usr/lib
        /usr/lib64
        ${Gperftools_ROOT_DIR}/lib
        ${GPERFTOOLS_ROOT}/lib
        $ENV{GPERFTOOLS_ROOT}/lib
        ${GPERFTOOLS_ROOT}/lib64
        $ENV{GPERFTOOLS_ROOT}/lib64
        /usr/local/lib
        /usr/local/lib64
        /opt/local/lib
)

find_path(GPERFTOOLS_INCLUDE_DIR
  NAMES gperftools/heap-profiler.h
  HINTS /usr/include
        /usr/local/include
        /opt/local/include
        ${Gperftools_ROOT_DIR}/include
        ${GPERFTOOLS_ROOT}/include
        $ENV{GPERFTOOLS_ROOT}/include
)

set(GPERFTOOLS_LIBRARIES ${GPERFTOOLS_TCMALLOC_AND_PROFILER})

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
  GPERFTOOLS
  DEFAULT_MSG
  GPERFTOOLS_LIBRARIES
  GPERFTOOLS_INCLUDE_DIR
  GPERFTOOLS_TCMALLOC
  GPERFTOOLS_PROFILER

)

if(GPERFTOOLS_FOUND AND NOT TARGET Gperftools::tcmalloc)
    add_library(Gperftools::tcmalloc SHARED IMPORTED)
    set_target_properties(Gperftools::tcmalloc PROPERTIES
        IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
        IMPORTED_LOCATION "${GPERFTOOLS_TCMALLOC}"
        INTERFACE_INCLUDE_DIRECTORIES "${GPERFTOOLS_INCLUDE_DIR}"
        INTERFACE_LINK_LIBRARIES "${GPERFTOOLS_TCMALLOC}"
    )
endif()

if(GPERFTOOLS_FOUND AND NOT TARGET Gperftools::profiler)
    add_library(Gperftools::profiler SHARED IMPORTED)
    set_target_properties(Gperftools::profiler PROPERTIES
        IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
        IMPORTED_LOCATION "${GPERFTOOLS_PROFILER}"
        INTERFACE_INCLUDE_DIRECTORIES "${GPERFTOOLS_INCLUDE_DIR}"
        INTERFACE_LINK_LIBRARIES "${GPERFTOOLS_PROFILER}"
    )
endif()

if(GPERFTOOLS_FOUND AND NOT TARGET Gperftools::gperftools)
    add_library(Gperftools::gperftools SHARED IMPORTED)
    set_target_properties(Gperftools::gperftools PROPERTIES
        IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
        IMPORTED_LOCATION "${GPERFTOOLS_TCMALLOC_AND_PROFILER}"
        INTERFACE_INCLUDE_DIRECTORIES "${GPERFTOOLS_INCLUDE_DIR}"
        INTERFACE_LINK_LIBRARIES "${GPERFTOOLS_TCMALLOC_AND_PROFILER}"
    )
endif()

set_package_properties(GPERFTOOLS PROPERTIES
    URL "https://github.com/gperftools/gperftools"
    DESCRIPTION "Collection of performance analysis tools"
)

mark_as_advanced(
  GPERFTOOLS_TCMALLOC
  GPERFTOOLS_PROFILER
  GPERFTOOLS_TCMALLOC_AND_PROFILER
  GPERFTOOLS_LIBRARIES
  GPERFTOOLS_INCLUDE_DIR)