Allow installation into lib64 instead of lib

This is needed for multilib system where /usr/lib isn't a symlink to /usr/lib64.

Signed-off-by: Justin Lecher <[email protected]>

Author: jlec

cmake/flann_utils.cmake

@@ -1,6 +1,6 @@
 macro(GET_OS_INFO)
     string(REGEX MATCH "Linux" OS_IS_LINUX ${CMAKE_SYSTEM_NAME})
-    set(FLANN_LIB_INSTALL_DIR "lib")
+    set(FLANN_LIB_INSTALL_DIR "lib${LIB_SUFFIX}")
     set(FLANN_INCLUDE_INSTALL_DIR
         "include/${PROJECT_NAME_LOWER}-${FLANN_MAJOR_VERSION}.${FLANN_MINOR_VERSION}")
 endmacro(GET_OS_INFO)