I'm trying to cross-compile the qhull library for Android, on a Linux x86-64 host. I'm fairly new to CMake, but rather experienced with other buildsystem tools.
I've setup a toolchain file, according to all the recommendations I've found, and it has worked for several other packages. Yet, no matter what I try, nothing seems to augment the linker path for one or more of qhull's executable programs. The problem is that it can't find Android NDK's libsup++.a, which is an implicit dependency of its compiler (GCC). If I take the generated link command and manually add -Lpath_to_libsup++.a, then the link succeeds.
In my toolchain file, among the things I've tried are:
I don't see anything unusual about its CMakeLists.txt, at least with respect to the first point of failure (user_eg3).
I'd prefer not to patch the library, if possible. I know many others are using this on Android (it's a dependency of point cloud library), so I assume I'm probably missing a step.
BTW, I'm using CMake v3.4.3, Android NDK r10e, and qhull v7.2.0.