[libvirt] [PATCH] build: add $(prefix) to SYSTEMD_UNIT_DIR

[Laine Stump]

I noticed this problem when adding systemd support to netcf, because I
setup the configure.ac to automatically prefer using systemd over
initscripts when possible - although I had copied the
install-data-local target from the example of libvirt's
"libvirt-guests" service more or less verbatim, "make distcheck" would
fail because it was trying to install the service file directly into
/lib/systemd/system rather than into
/home/user/some/unimportant/name/lib/systemd/system.

This is caused by the install/uninstall rules for the systemd unit
files relying on $(DESTDIR) pointing the installed files to the right
place, but in reality $(DESTDIR) is empty during this part of make
distcheck - it instead sets $(prefix) with the toplevel directory used
for its test build/install/uninstall cycle.

(This problem hasn't been seen when running "make distcheck" in
libvirt because libvirt will never build/install systemd support
unless explicitly told to do so on the configure commandline, and
"make distcheck" doesn't put the "--with-initscript=..." option on the
configure commandline.)

I verified that the same problem does exist in libvirt by modifying
libvirt's configure.ac to set:

  init_systemd=yes
  with_init_script=systemd+redhat

This forces a build/install of the systemd unit files during
distcheck, which yields an error like this:

/usr/bin/install -c -m 644 virtlockd.service \
  /lib/systemd/system/
libtool: install: warning: relinking `libvirt-qemu.la'
/usr/bin/install: cannot remove '/lib/systemd/system/virtlockd.service': Permission denied
make[4]: *** [install-systemd] Error 1

After adding $(prefix) to all the definitions of SYSTEMD_UNIT_DIR,
make distcheck now completes successfully with the modified
configure.ac, and the above lines change to something like this:

/usr/bin/install -c -m 644 virtlockd.service \
  /home/laine/devel/libvirt/libvirt-1.2.1/_inst/lib/systemd/system/
---
 daemon/Makefile.am | 4 ++--
 src/Makefile.am    | 4 ++--
 tools/Makefile.am  | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index e5c5db8..00221ab 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in
 
-## Copyright (C) 2005-2013 Red Hat, Inc.
+## Copyright (C) 2005-2014 Red Hat, Inc.
 ##
 ## This library is free software; you can redistribute it and/or
 ## modify it under the terms of the GNU Lesser General Public
@@ -387,7 +387,7 @@ endif ! LIBVIRT_INIT_SCRIPT_UPSTART
 
 if LIBVIRT_INIT_SCRIPT_SYSTEMD
 
-SYSTEMD_UNIT_DIR = /lib/systemd/system
+SYSTEMD_UNIT_DIR = $(prefix)/lib/systemd/system
 BUILT_SOURCES += libvirtd.service
 
 install-init-systemd: install-sysconfig libvirtd.service
diff --git a/src/Makefile.am b/src/Makefile.am
index 57e163f..8f77658 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in
 
-## Copyright (C) 2005-2013 Red Hat, Inc.
+## Copyright (C) 2005-2014 Red Hat, Inc.
 ##
 ## This library is free software; you can redistribute it and/or
 ## modify it under the terms of the GNU Lesser General Public
@@ -2220,7 +2220,7 @@ EXTRA_DIST += \
 if WITH_LIBVIRTD
 if LIBVIRT_INIT_SCRIPT_SYSTEMD
 
-SYSTEMD_UNIT_DIR = /lib/systemd/system
+SYSTEMD_UNIT_DIR = $(prefix)/lib/systemd/system
 
 BUILT_SOURCES += virtlockd.service virtlockd.socket
 DISTCLEANFILES += virtlockd.service virtlockd.socket
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 256a8f3..6847f13 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -1,4 +1,4 @@
-## Copyright (C) 2005-2013 Red Hat, Inc.
+## Copyright (C) 2005-2014 Red Hat, Inc.
 ##
 ## This library is free software; you can redistribute it and/or
 ## modify it under the terms of the GNU Lesser General Public
@@ -306,7 +306,7 @@ libvirt-guests.init: libvirt-guests.init.in libvirt-guests.sh
 
 
 EXTRA_DIST += libvirt-guests.service.in
-SYSTEMD_UNIT_DIR = /lib/systemd/system
+SYSTEMD_UNIT_DIR = $(prefix)/lib/systemd/system
 
 if LIBVIRT_INIT_SCRIPT_SYSTEMD
 install-systemd: libvirt-guests.service install-sysconfig libvirt-guests.sh
-- 
1.8.4.2