## Copyright 2016 Etix Labs
##
## Licensed 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.

# min config
cmake_minimum_required(VERSION 2.8.1)
cmake_policy(SET CMP0042 NEW)

set(PROJECT_NAME rtspatt)

project(${PROJECT_NAME})

# function to retrieve files sources inside a list of folders
function(find_sources DIRS)
  set(_headers "")
  set(_srcs "")
  foreach (dir ${ARGV})
    file (GLOB_RECURSE h_${dir} "${dir}/*.h" "${dir}/*.ipp" "${dir}/*.hpp")
    file (GLOB_RECURSE s_${dir} "${dir}/*.cpp" "${dir}/*.c" "${dir}/*.cxx")
    source_group (${dir} FILES ${s_${dir}} ${h_${dir}})
    set (_srcs ${_srcs} ${s_${dir}})
    set (_headers ${_headers} ${h_${dir}})
  endforeach ()
  set (SOURCES ${_srcs} PARENT_SCOPE)
  set (HEADERS ${_headers} PARENT_SCOPE)
endfunction()

# Cmake properties
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
set(CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE ON)
set(PREDEFINED_TARGETS_FOLDER "CMake")
set(CMAKE_VERBOSE_MAKEFILE true)

# include find package and try to find required packages
include(FindPkgConfig)
pkg_check_modules(GLIB2 glib-2.0)

# Check build type
if(NOT CMAKE_BUILD_TYPE)
    message(STATUS "No CMAKE_BUILD_TYPE specified, default to Debug")
    set(CMAKE_BUILD_TYPE "Debug")
endif()
message(STATUS "Building ${CMAKE_BUILD_TYPE} ERTSP")

# compiler flags
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14") #enable C++14

# set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W -Wall -Wextra -Wno-unused-function") # extra warnings
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fdiagnostics-color") #enable error coloration on gcc

# release specific flags
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2") #enable error coloration on gcc

#debug specific flags
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fprofile-arcs -ftest-coverage")

# find gstreamer 1.x libraries
pkg_search_module(GSTREAMER REQUIRED gstreamer-1.0)
find_library(LIB_GSTREAMER NAMES ${GSTREAMER_LIBRARIES} HINTS ${GSTREAMER_LIBRARY_DIRS})
FIND_LIBRARY(GST_RTSP_SERVER_LIBRARY_DIRS NAMES gstrtspserver-1.0 PATHS "/usr/lib/x86_64-linux-gnu/gstreamer-1.0/")
FIND_PATH(GST_RTSP_SERVER_INCLUDE_DIRS gst/rtsp-server/rtsp-server.h PATHS "/usr/include/gstreamer-1.0")
pkg_search_module(GSTREAMER_APP REQUIRED gstreamer-app-1.0) # for appsrc

include_directories (
        "${PROJECT_SOURCE_DIR}/include"
        "${GSTREAMER_INCLUDE_DIRS}"
        "${GST_RTSP_SERVER_INCLUDE_DIRS}"
	"${GSTREAMER_APP_INCLUDE_DIRS}"
)

link_directories (
  "${GSTREAMER_LIBRARY_DIRS}"
  "${GST_RTSP_SERVER_LIBRARY_DIRS}"
  "${GSTREAMER_APP_LIBRARY_DIRS}"
)

find_sources("src" "include")
add_executable (rtspatt ${HEADERS} ${SOURCES})

target_link_libraries (rtspatt ${GSTREAMER_LIBRARIES} ${GST_RTSP_SERVER_LIBRARY_DIRS} ${GSTREAMER_APP_LIBRARIES})