[root@Sailfish nemo]# ls -la /system/vendor/lib64/libsdmextension.so
-rw-r--r-- 1 root root 124752 Dec 31  2008 /system/vendor/lib64/libsdmextension.so
[root@Sailfish nemo]# LD_PRELOAD=/system/vendor/lib64/libsdmextension.so test_hwcomposer
ERROR: ld.so: object '/system/vendor/lib64/libsdmextension.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
library "libsdmextension.so" not found
library "libsdmextension.so" not found
library "libsdm-color.so" not found
library "libsdmextension.so" not found
library "libsdmextension.so" not found
library "libsdm-disp-apis.so" not found
width: 1440 height: 2560
library "libgui.so" wasn't loaded and RTLD_NOLOAD prevented it
Segmentation fault
[root@Sailfish nemo]#