Makefile: refactor and sync with libite

- Create .sha256 checksums for tarballs, in addition to the .md5
- Use debuild to build .deb package, runs lintian as well
- List all resulting build artifacts
- Call release-hook first, to check if tagged

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Makefile.am

@@ -8,20 +8,9 @@ if ENABLE_EXAMPLES
 SUBDIRS            += examples
 endif
 
-## Generate .deb package
-package:
-	@dpkg-buildpackage -uc -us -B
-
-## Generate MD5 checksum file
-MD5 = md5sum
-md5-dist:
-	@for file in $(DIST_ARCHIVES); do	\
-		$(MD5) $$file > $$file.md5;	\
-	done
-
 ## Check if tagged in git
 release-hook:
-	if [ ! `git tag | grep $(PACKAGE_VERSION)` ]; then				\
+	@if [ ! `git tag | grep $(PACKAGE_VERSION)` ]; then				\
 		echo;									\
 		printf "\e[1m\e[41mCannot find release tag $(PACKAGE_VERSION)\e[0m\n";	\
 		printf "\e[1m\e[5mDo release anyway?\e[0m "; read yorn;			\
@@ -37,10 +26,25 @@ release-hook:
 		echo;									\
 	fi
 
+## Generate .deb package
+package:
+	@debuild -uc -us -B --lintian-opts --profile debian -i -I --show-overrides
+
 ## Target to run when building a release
-release: distcheck release-hook md5-dist
+release: release-hook distcheck package
 	@for file in $(DIST_ARCHIVES); do						\
-		printf "$$file    \tDistribution tarball\n";				\
-		printf "$$file.md5\t"; cat $$file.md5 | cut -f1 -d' ';			\
-		mv $$file* ../;								\
+		md5sum    $$file > ../$$file.md5;					\
+		sha256sum $$file > ../$$file.sha256;					\
+	done
+	@mv $(DIST_ARCHIVES) ../
+	@echo
+	@echo "Resulting release files:"
+	@echo "================================================================="
+	@for file in $(DIST_ARCHIVES); do						\
+		printf "%-32s Distribution tarball\n" $$file;				\
+		printf "%-32s " $$file.md5;    cat ../$$file.md5    | cut -f1 -d' ';	\
+		printf "%-32s " $$file.sha256; cat ../$$file.sha256 | cut -f1 -d' ';	\
+	done
+	@for file in `cd ..; ls $(PACKAGE)*_$(VERSION)*`; do				\
+		printf "%-32s Debian/Ubuntu package\n" $$file;				\
 	done