Last two days i was unable to do a neat eng build for my galaxy note from cyanogen source. I was running into errors like unable to find libUMP.so and libion.so while building exynos hal specifically libgralloc_ump.
I was applying dirty workaround copy libUMP.so and libion.so to libUMP.so and libion.so and build again.
Another neat way to do is add both lib as prebuilt shared library to build system. For that you need to create projects for each and add it to product package.let me show how to do that for libUMP Continue reading Adding prebuilt shared library to Android Build System