Turn duplicate files into relative symlinks

Author: paulbovbel

Diff for: README.md

@@ -166,7 +166,7 @@ You can replicate the commands executed by CI locally, from the rosdistro reposi
 ```
 create_recipes --recipes config/recipes.yaml --recipes-dir ~/workspace/recipes --release-label hotdog --release-track hotdog --debian-version 0.0.0
 pull_distro_repositories --src-dir ~/workspace/src --github-key $GITHUB_KEY --rosdistro-index rosdistro/index.yaml --recipes config/recipes.yaml --clean
-generate_bundle_templates --src-dir ~/workspace/src --template-dir ~/workspace/templates --recipe ~/workspace/recipes/dev-bionic-hotdog.yaml
+generate_bundle_templates --src-dir ~/workspace/src --template-dir ~/workspace/debian --recipe ~/workspace/recipes/dev-bionic-hotdog.yaml
 ```
 
 

Diff for: tailor_distro/debian_templates/Dockerfile.j2

@@ -14,7 +14,7 @@ ENV DEBIAN_FRONTEND noninteractive
 ENV PYTHONUNBUFFERED 1
 
 RUN apt-get update && apt-get install --no-install-recommends -y \
-    locales curl gnupg sudo ccache software-properties-common expect
+    locales curl gnupg sudo software-properties-common expect rdfind
 RUN locale-gen en_US.UTF-8
 ENV LANG en_US.UTF-8
 

Diff for: tailor_distro/debian_templates/rules.j2

@@ -72,8 +72,21 @@ override_dh_strip:
 # We don't really care about calculating shlibdeps
 override_dh_shlibdeps:
 
+# Fixup absolute and relative paths for installation target into /opt, don't touch .so libs
+# Remove all python bytecode
+# Find duplicate files, turn into relative symlinks
 override_dh_installdeb:
-	# Fixup absolute and relative paths for installation target into /opt, don't touch .so libs
-	find . -type f -exec grep -I -q . {} \; -print0 | xargs -0 sed -ri "s|($(CURDIR)/)?debian/tmp/opt|/opt|g" && \
-	find . -name '*.pyc' -delete && \
+	find $(INSTALL_DIR) -type f -exec grep -I -q . {} \; -print0 | xargs -0 sed -ri "s|($(CURDIR)/)?debian/tmp/opt|/opt|g" && \
+	find $(INSTALL_DIR) -name '*.pyc' -delete && \
+	rdfind -makesymlinks true $(INSTALL_DIR) && \
+	find $(INSTALL_DIR) -type l -exec sh -c ' \
+	for link do \
+		target=$$(readlink "$$link"); \
+		case "$$target" in \
+			/*) \
+				dir=$$(dirname "$$link"); \
+				reltarget=$$(realpath --relative-to="$$dir" "$$target"); \
+				ln -sfn "$$reltarget" "$$link";; \
+		esac; \
+	done' sh {} + && \
 	dh_installdeb