[PATCH 2/2] libvolume_id: Don't create /usr hierarchy when ${prefix}

[Dan Nicholson <dbn.lists@gmail.com>]

When libvolume_id is being installed to a non-/ location such as
/usr/local, we don't want to setup the /usr/{include,lib} hierarchy.
GNU make conditionals are used to separate the case where prefix is
unset or is / and retains the current udev behavior. When prefix is
something else, libvolume_id will be installed in a flat fashion.

Signed-off-by: Dan Nicholson <dbn.lists@gmail.com>
---
 extras/volume_id/lib/Makefile |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/extras/volume_id/lib/Makefile b/extras/volume_id/lib/Makefile
index b553111..f0cfba4 100644
--- a/extras/volume_id/lib/Makefile
+++ b/extras/volume_id/lib/Makefile
@@ -4,9 +4,19 @@
 #
 # Released under the GNU General Public License, version 2.
 #
-includedir = 	${prefix}/usr/include
+ifndef prefix
+includedir = 	/usr/include
+libdir =	/lib
+usrlibdir =	/usr/lib
+else ifeq (${prefix},/)
+includedir = 	/usr/include
+libdir =	/lib
+usrlibdir =	/usr/lib
+else
+includedir = 	${prefix}/include
 libdir =	${prefix}/lib
-usrlibdir =	${prefix}/usr/lib
+usrlibdir =	${prefix}/lib
+endif
 
 INSTALL = install -c
 INSTALL_DATA  = ${INSTALL} -m 644
-- 
1.5.3.2


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