[BUG] udf-examples native build broken

[tgravescs]

Describe the bug
I was trying to build the native bits of the udf-examples build but it doesn't seem to be working. I tried the docker image in the udf-examples directory and also the centos one we use for building CUDF. Both came up with errors.

We should investigate the proper way to build an external project that depends on CUDF.

The errors using the Docker file:

Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output:
Change Dir: /home/tgraves/workspace/spark-rapids/udf-examples/target/cpp-build/CMakeFiles/CMakeTmp

Building C object CMakeFiles/cmTC_2ca25.dir/src.c.o
/usr/bin/cc -DCMAKE_HAVE_LIBC_PTHREAD  -fPIE -o CMakeFiles/cmTC_2ca25.dir/src.c.o -c /home/tgraves/workspace/spark-rapids/udf-examples/target/cpp-build/CMakeFiles/CMakeTmp/src.c
Linking C executable cmTC_2ca25
/usr/local/cmake-3.20.5-linux-x86_64/bin/cmake -E cmake_link_script CMakeFiles/cmTC_2ca25.dir/link.txt --verbose=1
/usr/bin/cc CMakeFiles/cmTC_2ca25.dir/src.c.o -o cmTC_2ca25
CMakeFiles/cmTC_2ca25.dir/src.c.o: In function `main’:
src.c:(.text+0x2f): undefined reference to `pthread_create’
src.c:(.text+0x3b): undefined reference to `pthread_detach’
src.c:(.text+0x47): undefined reference to `pthread_cancel’
src.c:(.text+0x58): undefined reference to `pthread_join’
src.c:(.text+0x6c): undefined reference to `pthread_atfork’
collect2: error: ld returned 1 exit status
gmake[1]: *** [cmTC_2ca25] Error 1

building from the centos docker image errors:

[exec] See also “/home/tgraves/workspace/spark-rapids/udf-examples/target/cpp-build/CMakeFiles/CMakeError.log”.
     [exec] CMake Error at /home/tgraves/workspace/spark-rapids/udf-examples/target/cpp-build/_deps/cuco-src/CMakeLists.txt:25 (include):
     [exec]   include could not find requested file:
     [exec]
     [exec]     rapids-cmake

rapids-cmake is there but it also compalins about rapids-find, rapids-cpm and rapids-cuda which I do not see.

[pxLi]

Also seeing this in our cudfjni nightly build pipeline related to rapidsai/cudf#9073

[pxLi]

We have a weekly pipeline for this (rapids_build-it-UDF-native), this issue was resolved after rapidsai/cudf#9075 got merged.