# 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.

cmake_minimum_required(VERSION 2.6 FATAL_ERROR)

list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/../../../../../hadoop-common-project/hadoop-common)
include(HadoopCommon)

# determine if container-executor.conf.dir is an absolute
# path in case the OS we're compiling on doesn't have
# a hook in get_executable. We'll use this define
# later in the code to potentially throw a compile error
string(REGEX MATCH . HCD_ONE "${HADOOP_CONF_DIR}")
string(COMPARE EQUAL ${HCD_ONE} / HADOOP_CONF_DIR_IS_ABS)

if (CMAKE_VERSION VERSION_LESS "3.1")
  # subset of CMAKE_<LANG>_COMPILER_ID
  # https://cmake.org/cmake/help/v3.0/variable/CMAKE_LANG_COMPILER_ID.html
  if (CMAKE_C_COMPILER_ID STREQUAL "GNU" OR
      CMAKE_C_COMPILER_ID STREQUAL "Clang" OR
      CMAKE_C_COMPILER_ID STREQUAL "AppleClang")
    set (CMAKE_C_FLAGS "-std=c99 -Wall -pedantic-errors ${CMAKE_C_FLAGS}")
  elseif (CMAKE_C_COMPILER_ID STREQUAL "Intel")
    set (CMAKE_C_FLAGS "-std=c99 -Wall ${CMAKE_C_FLAGS}")
  elseif (CMAKE_C_COMPILER_ID STREQUAL "SunPro")
    set (CMAKE_C_FLAGS "-xc99 ${CMAKE_C_FLAGS}")
  endif ()
else ()
  set (CMAKE_C_STANDARD 99)
endif ()

# Note: can't use -D_FILE_OFFSET_BITS=64, see MAPREDUCE-4258
string(REPLACE "-D_FILE_OFFSET_BITS=64" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
string(REPLACE "-D_FILE_OFFSET_BITS=64" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")

include(CheckIncludeFiles)
check_include_files("sys/types.h;sys/sysctl.h" HAVE_SYS_SYSCTL_H)

include(CheckFunctionExists)
check_function_exists(canonicalize_file_name HAVE_CANONICALIZE_FILE_NAME)
check_function_exists(fcloseall HAVE_FCLOSEALL)
check_function_exists(fchmodat HAVE_FCHMODAT)
check_function_exists(fdopendir HAVE_FDOPENDIR)
check_function_exists(fstatat HAVE_FSTATAT)
check_function_exists(openat HAVE_OPENAT)
check_function_exists(unlinkat HAVE_UNLINKAT)

include(CheckSymbolExists)
check_symbol_exists(sysctl "sys/types.h;sys/sysctl.h" HAVE_SYSCTL)

if(APPLE)
  include_directories( /System/Library/Frameworks )
  find_library(COCOA_LIBRARY Cocoa)
  mark_as_advanced(COCOA_LIBRARY)
  set(EXTRA_LIBS ${COCOA_LIBRARY})
endif(APPLE)

function(output_directory TGT DIR)
    set_target_properties(${TGT} PROPERTIES
        RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/${DIR}")
    set_target_properties(${TGT} PROPERTIES
        ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/${DIR}")
    set_target_properties(${TGT} PROPERTIES
        LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/${DIR}")
endfunction()

include_directories(
    ${CMAKE_CURRENT_SOURCE_DIR}
    ${CMAKE_BINARY_DIR}
    main/native/container-executor
    main/native/container-executor/impl
)
configure_file(${CMAKE_SOURCE_DIR}/config.h.cmake ${CMAKE_BINARY_DIR}/config.h)

add_library(container
    main/native/container-executor/impl/configuration.c
    main/native/container-executor/impl/container-executor.c
    main/native/container-executor/impl/get_executable.c
    main/native/container-executor/impl/utils/string-utils.c
)

add_executable(container-executor
    main/native/container-executor/impl/main.c
)
target_link_libraries(container-executor
    container
)
output_directory(container-executor target/usr/local/bin)

add_executable(test-container-executor
    main/native/container-executor/test/test-container-executor.c
)
target_link_libraries(test-container-executor
    container ${EXTRA_LIBS}
)
output_directory(test-container-executor target/usr/local/bin)