From e2438b7a321de8050f5db6793599a1668c91ccf5 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 3 Mar 2014 17:10:16 +0100
Subject: [PATCH] build-sys: prefer using ln --relative -s where appropriate

By using --relative symlinks look nicer when dealing with OS image trees
that are placed in arbitrary places of the OS.
---
 Makefile.am | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index e7134a25c..3eafcff4b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -208,7 +208,7 @@ define move-to-rootlibdir
 		$(MKDIR_P) $(DESTDIR)$(rootlibdir) && \
 		so_img_name=$$(readlink $(DESTDIR)$(libdir)/$$libname) && \
 		so_img_rel_target_prefix=$$(echo $(libdir) | sed 's,\(^/\|\)[^/][^/]*,..,g') && \
-		$(LN_S) -f $$so_img_rel_target_prefix$(rootlibdir)/$$so_img_name $(DESTDIR)$(libdir)/$$libname && \
+		$(LN_S) --relative -f $$so_img_rel_target_prefix$(rootlibdir)/$$so_img_name $(DESTDIR)$(libdir)/$$libname && \
 		mv $(DESTDIR)$(libdir)/$$libname.* $(DESTDIR)$(rootlibdir); \
 	fi
 endef
@@ -232,7 +232,6 @@ USER_BUSNAMES_TARGET_WANTS =
 
 SYSTEM_UNIT_ALIASES =
 USER_UNIT_ALIASES =
-
 GENERAL_ALIASES =
 
 install-target-wants-hook:
@@ -268,9 +267,9 @@ install-aliases-hook:
 	set -- $(SYSTEM_UNIT_ALIASES) && \
 		dir=$(systemunitdir) && $(install-aliases)
 	set -- $(USER_UNIT_ALIASES) && \
-		dir=$(userunitdir) && $(install-aliases)
+		dir=$(userunitdir) && $(install-relative-aliases)
 	set -- $(GENERAL_ALIASES) && \
-		dir= && $(install-aliases)
+		dir= && $(install-relative-aliases)
 
 define install-aliases
 	while [ -n "$$1" ]; do \
@@ -281,6 +280,15 @@ define install-aliases
 	done
 endef
 
+define install-relative-aliases
+	while [ -n "$$1" ]; do \
+		$(MKDIR_P) `dirname $(DESTDIR)$$dir/$$2` && \
+		rm -f $(DESTDIR)$$dir/$$2 && \
+		$(LN_S) --relative $(DESTDIR)$$1 $(DESTDIR)$$dir/$$2 && \
+		shift 2 || exit $$?; \
+	done
+endef
+
 INSTALL_EXEC_HOOKS += \
 	install-target-wants-hook \
 	install-directories-hook \
@@ -1848,7 +1856,7 @@ systemd_dbus1_generator_LDADD = \
 
 dbus1-generator-install-hook:
 	$(AM_V_at)$(MKDIR_P) $(DESTDIR)$(usergeneratordir)
-	$(AM_V_LN)$(LN_S) -f $(systemgeneratordir)/systemd-dbus1-generator $(DESTDIR)$(usergeneratordir)/systemd-dbus1-generator
+	$(AM_V_LN)$(LN_S) --relative -f $(DESTDIR)$(systemgeneratordir)/systemd-dbus1-generator $(DESTDIR)$(usergeneratordir)/systemd-dbus1-generator
 
 dbus1-generator-uninstall-hook:
 	rm -f $(DESTDIR)$(usergeneratordir)/systemd-dbus1-generator
@@ -1978,7 +1986,7 @@ systemd_bus_proxyd_LDADD = \
 
 bus-proxyd-install-hook:
 	$(AM_V_at)$(MKDIR_P) $(DESTDIR)$(bindir)
-	$(AM_V_LN)$(LN_S) -f $(rootlibexecdir)/systemd-bus-proxyd $(DESTDIR)$(bindir)/systemd-stdio-bridge
+	$(AM_V_LN)$(LN_S) --relative -f $(DESTDIR)$(rootlibexecdir)/systemd-bus-proxyd $(DESTDIR)$(bindir)/systemd-stdio-bridge
 
 bus-proxyd-uninstall-hook:
 	rm -f $(DESTDIR)$(bindir)/systemd-stdio-bridge
@@ -4842,7 +4850,7 @@ GENERAL_ALIASES += \
 	$(systemunitdir)/remote-fs.target $(pkgsysconfdir)/system/multi-user.target.wants/remote-fs.target \
 	$(systemunitdir)/getty@.service $(pkgsysconfdir)/system/getty.target.wants/getty@tty1.service \
 	$(pkgsysconfdir)/user $(sysconfdir)/xdg/systemd/user \
-	../system-services/org.freedesktop.systemd1.service $(dbussessionservicedir)/org.freedesktop.systemd1.service
+	$(dbussystemservicedir)/org.freedesktop.systemd1.service $(dbussessionservicedir)/org.freedesktop.systemd1.service
 
 if HAVE_SYSV_COMPAT
 INSTALL_DIRS += \
-- 
2.30.2