commit 87e54cc4d3fa76f3b226fbf2822a87af48cf3e51
Author: Johannes Huber <johu@gentoo.org>
Date:   Wed Sep 6 23:30:42 2017 +0200

    Fix multilib install

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef7ade07..11f8603b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,7 +66,7 @@ set(CMAKE_INCLUDE_CURRENT_DIR ON) # for .moc
 set(CMAKE_AUTOMOC ON)
 if(NOT CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
   set(QTAV_INSTALL_HEADERS ${CMAKE_INSTALL_PREFIX}/include)
-  set(QTAV_INSTALL_LIBS ${CMAKE_INSTALL_PREFIX}/lib)
+  set(QTAV_INSTALL_LIBS ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
   set(QTAV_INSTALL_BINS ${CMAKE_INSTALL_PREFIX}/bin)
   set(QTAV_INSTALL_QML ${CMAKE_INSTALL_PREFIX}/qml)
 else()