Dir_var.mk

#* ************************************************************************** *#
#*                                                                            *#
#*                                                        :::      ::::::::   *#
#*   Dir_var.mk                                         :+:      :+:    :+:   *#
#*                                                    +:+ +:+         +:+     *#
#*   By: mgautier <mgautier@student.42.fr>          +#+  +:+       +#+        *#
#*                                                +#+#+#+#+#+   +#+           *#
#*   Created: 2017/10/31 12:38:36 by mgautier          #+#    #+#             *#
#*   Updated: 2018/01/10 14:59:42 by mgautier         ###   ########.fr       *#
#*                                                                            *#
#* ************************************************************************** *#

# This is a list of variables which shall be set in each directories in the 
# Srcs.mk file. The function is this file will stock their content
# in dir specific variables

local_variables_list :=\
	SRC\
	OBJ_DIR\
	SRC_DIR\
	INC_DIR\
	COMPONENTS\
	LIBRARIES\
	TARGET\
	$(local_variables_list_unit_test)\
	$(local_variables_list_functional_test)

# The function is intended to set the value of variable which are
# specific to each directory, that is, the list of source files, the various
# subdirs used (for sources, header, etc)
#
# It expect one argument, the name of the directory
#

define _loc_var
include $1Srcs.mk
$(foreach local_var,$(local_variables_list),\
	$(call assign_local,$1,$(local_var)))
SUBDIRS_$1 := $$(COMPONENTS_$1) $$(LIBRARIES_$1)

endef

define_local_variables = $(eval $(call _loc_var,$1))

# This function assign to one directory specific variable its value.
# (which is based on the current global value of that variable)
# It expect the dir name as first argument, the variable name as second argument
# Should be used as eval
# After setting the the variable value for the current dir, it clear the value
# to avoid trouble later in computation
# 1 : dir name
# 2 : local variable name
# 

define assign_local

$2_$1 := $$($2)
$2 := $(NULL)

endef