#==================================
# Makefile for building: libsopp.a
#==================================

# Definitions
#------------

# C compiler
CC            = gcc
# C++ compiler
CXX           = g++
# Include file directory
INC_DIR       = ./include
# Object file directory
OBJ_DIR       = ./obj

# Phony declarations
#-------------------
.PHONY: install clean object_directory

# Macros
#-------

# Tests for the lib directory
TEST_LIB          = test -d /usr/lib/json
# Make the lib directory
MAKE_LIB          = mkdir /usr/lib/json
# Tests for the obj directory
TEST_OBJ          = test -d obj
# Tests for the absence of the obj directory
TEST_AGAINST_OBJ  = test ! -d obj
# Tests for the absence of libjsoncpp.a
TEST_AGAINST_A    = test ! -e libjsoncpp.a
# Tests for the absence of libjsoncpp.so
TEST_AGAINST_SO    = test ! -e libjsoncpp.so
# Makes the obj directory
MAKE_OBJ          = mkdir obj
# Removes the obj directory
REM_OBJ           = rm -r obj

all: object_directory json_reader.o json_writer.o json_value.o
    ar -r libjsoncpp.a obj/json_reader.o obj/json_writer.o obj/json_value.o
    g++ -o libjsoncpp.so -shared obj/json_reader.o obj/json_writer.o obj/json_value.o

json_reader.o: src/lib_json/json_reader.cpp
    $(CXX) -I $(INC_DIR) -c -o obj/json_reader.o src/lib_json/json_reader.cpp -fPIC

json_writer.o: src/lib_json/json_writer.cpp
    $(CXX) -I $(INC_DIR) -c -o obj/json_writer.o src/lib_json/json_writer.cpp -fPIC

json_value.o: src/lib_json/json_value.cpp
    $(CXX) -I $(INC_DIR) -c -o obj/json_value.o src/lib_json/json_value.cpp -fPIC

object_directory:
    $(TEST_OBJ) || $(MAKE_OBJ)

install:
    mkdir -p $(DESTDIR)/usr/include
    mkdir -p $(DESTDIR)/usr/lib
    cp -r include/json --target-directory=$(DESTDIR)/usr/include
    cp libjsoncpp.a $(DESTDIR)/usr/lib/libjsoncpp.a
    cp libjsoncpp.so $(DESTDIR)/usr/lib/libjsoncpp.so

clean:
    $(TEST_AGAINST_OBJ) || $(REM_OBJ)
    $(TEST_AGAINST_A)   || rm libjsoncpp.a
    $(TEST_AGAINST_SO)  || rm libjsoncpp.so