WORKDIR    = $(shell pwd -L)

CXX        = g++
CXXFLAGS   = -Wall -fPIC -ansi -O3
CXXFLAGS  += -std=c++0x
SOFLAGS    = -O -shared
LDFLAGS    =  -L$(WORKDIR)/lib
LOADLIBES  =  -lKM3NeTDBClient

LIBS       = -lssl
UNAME_S   := $(shell uname -s)

# macOS specific

ifeq ($(UNAME_S),Darwin)
    CXXFLAGS   += -I/usr/local/opt/openssl/include
    LDFLAGS    += -L/usr/local/opt/openssl/lib
    LOADLIBES  += /usr/local/opt/openssl/lib/*.a
endif

NATIVE_SRCS     = $(wildcard  *.cpp)
NATIVE_OBJS     = $(addprefix $(WORKDIR)/bin/,     $(NATIVE_SRCS:.cpp=.o))
PUBLIC_LIBS     = $(addprefix $(WORKDIR)/lib/,     libKM3NeTDBClient.so)
PUBLIC_INCLUDES = $(addprefix $(WORKDIR)/include/, KM3NeTDBClient.h)


default: libs

libs: $(PUBLIC_LIBS) $(PUBLIC_INCLUDES)

$(PUBLIC_LIBS):     | $(WORKDIR)/lib
$(PUBLIC_INCLUDES): | $(WORKDIR)/include
$(NATIVE_OBJS):     | $(WORKDIR)/bin

$(PUBLIC_LIBS): $(NATIVE_OBJS)
	$(CXX) $(SOFLAGS) -o $@ $^ $(LIBS)

$(PUBLIC_INCLUDES): $(WORKDIR)/include/%: %

$(WORKDIR)/lib $(WORKDIR)/bin $(WORKDIR)/include:
	mkdir -p $@

$(WORKDIR)/bin/%.o: %.cpp %.d
	$(CXX) $(CXXFLAGS) -c -o $@ $<

%.d: %.cpp
	@/bin/echo -n "$@ "            >  $@
	@$(CXX) $(CXXFLAGS) -MM -MP $< >> $@

$(WORKDIR)/include/%:%
	cp $^ $(WORKDIR)/include


# examples

EXAMPLE_SRCS  = $(wildcard  $(WORKDIR)/examples/*.cpp)
EXAMPLE_BINS  = $(subst     $(WORKDIR)/examples/,$(WORKDIR)/examples/bin/,$(EXAMPLE_SRCS:.cpp=))

examples: libs $(EXAMPLE_BINS)

$(EXAMPLE_BINS): | $(WORKDIR)/examples/bin

$(WORKDIR)/examples/bin:
	mkdir -p $@

$(WORKDIR)/examples/bin/%: $(WORKDIR)/examples/%.cpp $(PUBLIC_LIBS) $(PUBLIC_INCLUDES)
	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $@ $< -lKM3NeTDBClient -I$(WORKDIR)/include $(LOADLIBES)


# clean

clean:
	rm -rf $(WORKDIR)/lib
	rm -rf $(WORKDIR)/bin
	rm -rf $(WORKDIR)/include
	rm -rf $(WORKDIR)/examples/bin