From: Bastian Germann <bage@debian.org>
Subject: Prevent overriding CMAKE_INSTALL_LIBDIR
---
--- a/cmake/c4Project.cmake
+++ b/cmake/c4Project.cmake
@@ -2787,7 +2787,7 @@ endfunction()
 macro(_c4_setup_install_vars)
     set(_RUNTIME_INSTALL_DIR   bin/)
     set(_ARCHIVE_INSTALL_DIR   lib/)
-    set(_LIBRARY_INSTALL_DIR   lib/) # TODO on Windows, ARCHIVE and LIBRARY dirs must be different to prevent name clashes
+    set(_LIBRARY_INSTALL_DIR   ${CMAKE_INSTALL_LIBDIR}) # TODO on Windows, ARCHIVE and LIBRARY dirs must be different to prevent name clashes
     set(_INCLUDE_INSTALL_DIR   include/)
     set(_OBJECTS_INSTALL_DIR   obj/)
     set(_SYSCONFIG_INSTALL_DIR etc/${_c4_lcprefix}/)