CXX = g++
CXXFLAGS = -shared -fPIC -I$(JRE_HOME)/include -I$(JRE_HOME)/include/linux
NDIR = src/name/blackcap/exifwasher/exiv2
BDIR = src/name/blackcap/exifwasher/binaries/linux

.PHONY: all checkenv

all: mkdirs checkenv $(BDIR)/libjni.so $(BDIR)/libexiv2.so

mkdirs:
	@[ -d "$(BDIR)" ] || mkdir -p "$(BDIR)"

checkenv:
	@if [ -z "$(JRE_HOME)" ]; then \
		1>&2 echo "JRE_HOME not set"; \
		exit 1; \
	fi

$(BDIR)/libjni.so: $(NDIR)/native.cpp
	$(CXX) $(CXXFLAGS) -o $@ $< -lexiv2

$(BDIR)/libexiv2.so: /usr/lib/x86_64-linux-gnu/libexiv2.so
	cp -fp $< $@