cmake_minimum_required(VERSION 3.4)



##### Macro definitions

# Indent_Include --

macro(Indent_Include SCRIPT_PATH)

	set(MSG_INDENT				"${MSG_INDENT}  ")
	include(${SCRIPT_PATH}			NO_POLICY_SCOPE)
	string(SUBSTRING ${MSG_INDENT}		2 -1 MSG_INDENT)

endmacro(Indent_Include)

# Std_Header --

macro(Std_Header)

	get_filename_component(CUR_MAKELIST	${CMAKE_CURRENT_LIST_FILE} ABSOLUTE)
	get_filename_component(CUR_DIR		${CMAKE_CURRENT_LIST_FILE} PATH)
	message(STATUS "")
	message(STATUS "${MSG_INDENT} ---> ${CUR_MAKELIST}")

endmacro(Std_Header)

# Define_Var_From_Env_Or_Value --

macro(Define_Var_From_Env_Or_Value VAR_NAME VALUE TEST_FILE)

	if(NOT DEFINED ${VAR_NAME})
		if("$ENV{${VAR_NAME}}" STREQUAL "")
			set(${VAR_NAME}			${VALUE})
			message(STATUS "${MSG_INDENT} env(${VAR_NAME}) not defined, attempting: >${${VAR_NAME}}<")
		else()
			set(${VAR_NAME}			$ENV{${VAR_NAME}})
			message(STATUS "${MSG_INDENT} Using env(${VAR_NAME}): >${${VAR_NAME}}<")
		endif("$ENV{${VAR_NAME}}" STREQUAL "")

		if(NOT "${TEST_FILE}" STREQUAL "")
			if(NOT EXISTS "${${VAR_NAME}}/${TEST_FILE}")
				message(FATAL_ERROR "${MSG_INDENT} test path \"${${VAR_NAME}}/${TEST_FILE}\" does not exists, aborting")
			else()
				message(STATUS "${MSG_INDENT} Found \"${${VAR_NAME}}/${TEST_FILE}\"<")
			endif(NOT EXISTS "${${VAR_NAME}}/${TEST_FILE}")
		endif(NOT "${TEST_FILE}" STREQUAL "")

	endif(NOT DEFINED ${VAR_NAME})

endmacro(Define_Var_From_Env_Or_Value)

# Define_Var_From_Env_Or_Stop --

macro(Define_Var_From_Env_Or_Stop VAR_NAME)

	if(NOT DEFINED ${VAR_NAME})
		if("$ENV{${VAR_NAME}}" STREQUAL "")
			message(FATAL_ERROR "${MSG_INDENT} env(${VAR_NAME}) not defined, aborting")
		else()
			set(${VAR_NAME}			$ENV{${VAR_NAME}})
			message(STATUS "${MSG_INDENT} Using env(${VAR_NAME}): >${${VAR_NAME}}<")
		endif("$ENV{${VAR_NAME}}" STREQUAL "")
	endif(NOT DEFINED ${VAR_NAME})

endmacro(Define_Var_From_Env_Or_Stop)



##### Identify main cmake file and include it.

get_filename_component(MAIN_LISTFILE	${CMAKE_CURRENT_LIST_FILE} PATH)
get_filename_component(MAIN_LISTFILE	${MAIN_LISTFILE} NAME)
set(MAIN_LISTFILE						"../${MAIN_LISTFILE}.cmake")

file(GLOB MAIN_LISTFILE_TEST ${MAIN_LISTFILE})
if("${MAIN_LISTFILE_TEST}" STREQUAL "")
	message(FATAL_ERROR "CMakeLists.txt: no file \"${MAIN_LISTFILE}\", aborting.")
endif("${MAIN_LISTFILE_TEST}" STREQUAL "")

message(STATUS "")
message(STATUS "")
message(STATUS "CMakeLists.txt: including main cmake file: \"${MAIN_LISTFILE}\"")

set(MSG_INDENT " ")
include(${MAIN_LISTFILE}				NO_POLICY_SCOPE)