##############################################################################
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
##############################################################################

# - Find pprof (libprofiler.a)
# PPROF_ROOT hints the location
#
# This module defines
#  PPROF_INCLUDE_DIR, directory containing headers
#  PPROF_LIBS, directory containing pprof libraries
#  PPROF_STATIC_LIB, path to libprofiler.a
#  tcmallocstatic, pprofstatic

set(PPROF_SEARCH_HEADER_PATHS
  ${GPERFTOOLS_ROOT}/include
  $ENV{IMPALA_HOME}/thirdparty/gperftools-$ENV{IMPALA_GPERFTOOLS_VERSION}/src
)

set(PPROF_SEARCH_LIB_PATH
  ${GPERFTOOLS_ROOT}/lib
  $ENV{IMPALA_HOME}/thirdparty/gperftools-$ENV{IMPALA_GPERFTOOLS_VERSION}/.libs
)

find_path(PPROF_INCLUDE_DIR google/profiler.h PATHS
  ${PPROF_SEARCH_HEADER_PATHS}
  # make sure we don't accidentally pick up a different version
  NO_DEFAULT_PATH
)

find_library(PPROF_LIB_PATH profiler
  PATHS ${PPROF_SEARCH_LIB_PATH} NO_DEFAULT_PATH)
find_library(PPROF_STATIC_LIB libprofiler.a
  PATHS ${PPROF_SEARCH_LIB_PATH} NO_DEFAULT_PATH)
find_library(HEAPPROF_STATIC_LIB libtcmalloc.a
  PATHS ${PPROF_SEARCH_LIB_PATH} NO_DEFAULT_PATH)

if (NOT PPROF_LIB_PATH OR NOT PPROF_STATIC_LIB OR
    NOT HEAPPROF_STATIC_LIB)
  message(FATAL_ERROR "gperftools libraries NOT found. "
    "Looked for libs in ${PPROF_SEARCH_LIB_PATH}")
  set(PPROF_FOUND FALSE)
else()
  set(PPROF_FOUND TRUE)
  add_library(pprofstatic STATIC IMPORTED)
  set_target_properties(pprofstatic PROPERTIES IMPORTED_LOCATION "${PPROF_STATIC_LIB}")
  add_library(tcmallocstatic STATIC IMPORTED)
  set_target_properties(tcmallocstatic PROPERTIES IMPORTED_LOCATION "${HEAPPROF_STATIC_LIB}")
endif ()

mark_as_advanced(
  PPROF_INCLUDE_DIR
  PPROF_LIBS
  PPROF_STATIC_LIB
  pprofstatic
  tcmallocstatic
)