Hmm, after looking into it more, it seems like it was because I was
using C++ only syntax and I was compiling a .c file.
I tried changing the .c file to a .cpp and I'm still having an issue.
Now the compiler is saying "No rule to make target 'apps/test3d/jni/
app-android.c' even though I renamed the app-android.c file to app-
android.cpp.
I can't seem to find a solution.