add static libraries to TorchConfig.cmake.in (#29837)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29837
The current TorchConfig seems only handles shared libraries. When
building static libraries it doesn't provide the list of all needed
static libraries. This is especially a problem for mobile build as we
build static libraries first then link into shared library / binary to
do "gc-sections". Today we have to manually import these dependent
libraries on each callsite.
Test Plan:
- build_mobile.sh builds and runs;
- The baby test project in #29716 builds and runs;
- Will check CI for other platforms;
Differential Revision: D18513404
Pulled By: ljk53
fbshipit-source-id: c3dc2c01004c4c9c4574c71fd9a4253c9e19e1e9
