[BUG] cudf_backtrace missing for static build with CUDF_BUILD_STACKTRACE_DEBUG=ON

[jlowe]

Describe the bug
Attempting to configure libcudf as a static library with backtrace debug enabled fails with:

CMake Error in CMakeLists.txt:
  export called with target "cudf" which requires target "cudf_backtrace"
  that is not in any export set.

Steps/Code to reproduce bug

mkdir cpp/build
cd cpp/build
cmake .. -DBUILD_SHARED_LIBS=OFF -DCUDF_BUILD_STACKTRACE_DEBUG=ON

Expected behavior
cmake configuration completes successfully and the build will add backtrace debug support in libcudf.

Environment overview (please complete the following information)

• Environment location: Docker container, image definition at https://github.com/NVIDIA/spark-rapids-jni/blob/branch-24.10/ci/Dockerfile
• Method of cuDF install: from source

[vyasr]

Presumably this is rapidsai/rapids-cmake#176 again, and we need to add an extra install rule like we do for the conda_env.

[jlowe]

Thanks for taking a look @vyasr! I agree, seems related to that issue. Note that this is not high priority. I ran across it while trying to do a debug build to help track down a problem. It is not something we're going to add to our normal build.