PWD = $(shell pwd)
export CPATH = $(PWD)/openssl/include
export LIBRARY_PATH = $(PWD)/openssl
OPENSSL_VERSION = 1.0.2d
OPENSSL_DIR = openssl-$(OPENSSL_VERSION)
RUBY_MAJOR_VERSION = 2.3
RUBY_VERSION = $(RUBY_MAJOR_VERSION).0
RUBY_DIR = ruby-$(RUBY_VERSION)-preview1
RUBY_OPENSSL_EXT_DIR = $(RUBY_DIR)/ext/openssl
export LIBRARY_PATH = $(PWD)/lib
export C_INCLUDE_PATH = $(PWD)/$(OPENSSL_DIR)/include

.SECONDARY:

all: libs ext

clean:
	rm -rf $(RUBY_DIR) $(OPENSSL_DIR)
clean-libs:
	find $(OPENSSL_DIR) \( -name "*.o" -o -name "*.so" \) -delete
	rm -f lib/libcrypto.so lib/libssl.so lib/libcrypto.so.1.0.0 lib/libssl.so.1.0.0
clean-ext:
	find $(RUBY_OPENSSL_EXT_DIR) \( -name "*.o" -o -name "*.so" \) -delete
	rm -f lib/openssl.so

mr-proper: clean
	rm -rf lib/libcrypto.so lib/libssl.so lib/libcrypto.so.1.0.0 lib/libssl.so.1.0.0 lib/openssl.so

$(OPENSSL_DIR)/:
	wget https://www.openssl.org/source/$(OPENSSL_DIR).tar.gz
	tar xf $(OPENSSL_DIR).tar.gz
	rm -rf $(OPENSSL_DIR).tar.gz

$(OPENSSL_DIR)/Makefile: | $(OPENSSL_DIR)/
	cd $(OPENSSL_DIR); ./config shared

$(OPENSSL_DIR)/libssl.so \
$(OPENSSL_DIR)/libcrypto.so \
$(OPENSSL_DIR)/libssl.so.1.0.0 \
$(OPENSSL_DIR)/libcrypto.so.1.0.0: $(OPENSSL_DIR)/Makefile
	$(MAKE) -C $(OPENSSL_DIR) depend build_libs

lib/%.so: $(OPENSSL_DIR)/%.so
	cp $< $@

lib/%.so.1.0.0: $(OPENSSL_DIR)/%.so.1.0.0
	cp $< $@

libs: lib/libssl.so lib/libcrypto.so lib/libssl.so.1.0.0 lib/libcrypto.so.1.0.0

$(RUBY_DIR)/:
	wget http://cache.ruby-lang.org/pub/ruby/$(RUBY_MAJOR_VERSION)/$(RUBY_DIR).tar.gz
	tar xf $(RUBY_DIR).tar.gz
	rm -f $(RUBY_DIR).tar.gz

$(RUBY_OPENSSL_EXT_DIR)/Makefile: libs | $(RUBY_DIR)/
	cd $(RUBY_OPENSSL_EXT_DIR); ruby extconf.rb
	patch -p0 -d $(RUBY_OPENSSL_EXT_DIR) < patch

$(RUBY_OPENSSL_EXT_DIR)/openssl.so: libs $(RUBY_OPENSSL_EXT_DIR)/Makefile
	$(MAKE) -C $(RUBY_OPENSSL_EXT_DIR)

lib/openssl.so: $(RUBY_OPENSSL_EXT_DIR)/openssl.so
	cp $< $@

ext: lib/openssl.so