Merge pull request #624 from nicobrevin/feature-another-fpm-example

Feature: another fpm example

examples/fpm-with-system-ruby/Makefile

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+#
+# feel free to change these to whatever makes sense
+#
+# debian package we rely on
+RUBY_PACKAGE=ruby
+# and the executable that comes from it
+RUBY_BIN=/usr/bin/ruby
+# the version we name the deb
+VERSION=1.0.2
+# where to get the sauce
+GIT_URL=https://github.com/jordansissel/fpm.git
+# the tag we checkout to build from
+TAG_SPEC=refs/tags/v$(VERSION)
+
+CHECKOUT_DIR=fpm-checkout
+BUILD_DIR=build
+LIB_DIR=$(BUILD_DIR)/usr/lib/fpm
+BIN_DIR=$(BUILD_DIR)/usr/bin
+GEM_PATH:=$(shell readlink -f .)/build/gem
+FPM_BIN=$(BIN_DIR)/fpm
+BUNDLE_BIN=$(GEM_PATH)/bin/bundle
+BUNDLE_CMD=$(RUBY_CMD) $(BUNDLE_BIN)
+FPM_CMD=$(FPM_BIN)
+GEM_CMD=$(RUBY_BIN) -S gem
+
+.PHONY: clean
+clean:
+	rm -rf $(CHECKOUT_DIR)
+	rm -rf $(BUILD_DIR)
+	rm -f fpm*.deb
+
+$(CHECKOUT_DIR):
+	rm -rf $(CHECKOUT_DIR)
+	git clone $(GIT_URL) $(CHECKOUT_DIR) --depth 1
+	cd $(CHECKOUT_DIR) && git checkout $(TAG_SPEC)
+
+$(BUNDLE_BIN):
+	$(GEM_CMD) install bundler --install-dir=$(GEM_PATH) --no-ri --no-rdoc
+
+$(FPM_BIN):
+	mkdir --parents $(BIN_DIR)
+# 	Couldn't think of a nice way to do this, so here is this code turd
+	echo "#! $(RUBY_BIN)" > $(FPM_BIN)
+	echo 'load File.dirname($$0) + "/../lib/fpm/bundle/bundler/setup.rb"' >> $(FPM_BIN)
+	echo 'require "fpm"'  >> $(FPM_BIN)
+	echo 'require "fpm/command"' >> $(FPM_BIN)
+	echo 'exit(FPM::Command.run || 0)' >> $(FPM_BIN)
+	chmod +x $(FPM_BIN)
+
+.PHONY: install
+install: $(CHECKOUT_DIR) $(BUNDLE_BIN) $(FPM_BIN)
+	mkdir --parents $(LIB_DIR)
+	cd $(CHECKOUT_DIR) && GEM_PATH=$(GEM_PATH) $(BUNDLE_CMD) install --without=development --standalone
+	cd $(CHECKOUT_DIR) && gem build fpm.gemspec
+	tar -xf $(CHECKOUT_DIR)/fpm*gem -C $(BUILD_DIR)
+	tar --touch -xf $(BUILD_DIR)/data.tar.gz -C $(LIB_DIR)
+	cp -r $(CHECKOUT_DIR)/bundle $(LIB_DIR)/bundle
+
+.PHONY: package
+package: install
+	$(FPM_BIN) -s dir -t deb -n fpm -d $(RUBY_PACKAGE) -v $(VERSION) -C $(BUILD_DIR) usr

examples/fpm-with-system-ruby/README.md

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+# About
+
+ - build and install dependency on a ruby1.9 of some kind
+ - does not need root to package
+ - has its own GEM_DIR to keep its dependencies isolated
+ - installation does not install any gems in to your ruby environment
+ - installs in to standard locations /usr/{bin,lib}/fpm
+ - doesn't depend on having fpm installed for packaging to work
+
+# Dependencies
+
+ - build-essential (perhaps more, but basically the standard packages you need
+   for deb packaging)
+ - ruby and ruby-dev
+
+# Usage
+
+ - $ cd examples/fpm-with-system-ruby && make package