DEP17: Install /usr-merge aliasing symlinks. Closes: #1064459.

1 files changed, 27 insertions, 1 deletions

diff --git a/debian/rules b/debian/rules
index 05dfb39..17ad36f 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,5 +1,7 @@
 #!/usr/bin/make -f
 
+include /usr/share/dpkg/architecture.mk
+
 OSNAME = "GNU/`uname | sed -e 's/GNU\///'`"
 ifeq ($(DEB_HOST_GNU_SYSTEM),linux)
   OSNAME=GNU/Linux
@@ -11,6 +13,14 @@ endif
 VENDORFILE = debian
 DESTDIR = debian/base-files
 
+ifneq (,$(filter $(DEB_HOST_ARCH),amd64 loong64 mips64el ppc64 ppc64el sparc64))
+  USR_MERGE_RTLDLIB = lib64
+else ifneq (,$(filter $(DEB_HOST_ARCH),x32))
+  USR_MERGE_RTLDLIB = libx32
+endif
+USR_MERGE = bin lib sbin $(USR_MERGE_RTLDLIB)
+USR_MERGE_MULTILIB = $(filter-out $(USR_MERGE),lib32 lib64 libo32 libx32)
+
 %:
 	dh $@
 
@@ -19,6 +29,15 @@ execute_after_dh_clean:
 
 override_dh_auto_build:
 	sh debian/check-md5sum-etc profile
+	set -e; { \
+	  echo "# Triggers for creating multilib aliasing symlinks on demand"; \
+	  for d in $(USR_MERGE_MULTILIB); do \
+	    echo "interest-noawait /usr/$$d"; \
+	  done; \
+	} > debian/triggers
+
+execute_after_dh_installdirs:
+	dh_installdirs $(foreach d,$(USR_MERGE),usr/$(d))
 
 override_dh_auto_install:
 	install -p -m 644 etc/*      $(DESTDIR)/etc
@@ -42,6 +61,10 @@ override_dh_installchangelogs:
 
 override_dh_link:
 	dh_link -X os-release
+	# We want these links to be relative, so we cannot use dh_link.
+	set -e; for d in $(USR_MERGE); do \
+	  ln -s usr/$$d debian/base-files/$$d; \
+	done
 
 override_dh_compress:
 	dh_compress -X README
@@ -55,4 +78,7 @@ override_dh_fixperms:
 	cd debian/base-files && chmod 700 root
 
 override_dh_installdeb:
-	dh_installdeb -DVENDORFILE=$(VENDORFILE)
+	dh_installdeb \
+	  '-DVENDORFILE=$(VENDORFILE)' \
+	  '-DUSR_MERGE_MULTILIB=$(USR_MERGE_MULTILIB)' \
+	  '-DUSR_MERGE_RTLDLIB=$(USR_MERGE_RTLDLIB)'