build_env_info: resolve issues with ninja

This PR resolves issues with ninja as generator reported in
trilinos#13643

In Trilinos builds with ninja as generator, calling `make clean`
followed by recompiling resulted in compilation errors due to a missing
generated file Kokkos_Version_Info.cpp that was deleted during clean

The changes in this PR resolve the issue

Added notes:

* The issue did not occur with Unix Makefiles as generator
* The issue did not ocur with standalond kokkos

Co-authored-by: Daniel Arndt <[email protected]>
Signed-off-by: Nathan Ellingwood <[email protected]>

packages/kokkos/cmake/build_env_info.cmake

@@ -4,7 +4,7 @@ find_package(Git QUIET)
 
 set(CURRENT_LIST_DIR ${CMAKE_CURRENT_LIST_DIR})
 set(pre_configure_dir ${CMAKE_CURRENT_LIST_DIR})
-set(post_configure_dir ${CMAKE_BINARY_DIR}/generated)
+set(post_configure_dir ${CMAKE_CURRENT_BINARY_DIR}/generated)
 
 set(pre_configure_file ${pre_configure_dir}/Kokkos_Version_Info.cpp.in)
 set(post_configure_file ${post_configure_dir}/Kokkos_Version_Info.cpp)
@@ -105,7 +105,7 @@ function(check_git_setup)
                            ${CURRENT_LIST_DIR}/build_env_info.cmake BYPRODUCTS ${post_configure_file}
   )
 
-  add_library(impl_git_version ${CMAKE_BINARY_DIR}/generated/Kokkos_Version_Info.cpp)
+  add_library(impl_git_version ${CMAKE_CURRENT_BINARY_DIR}/generated/Kokkos_Version_Info.cpp)
   target_include_directories(impl_git_version PUBLIC ${CMAKE_BINARY_DIR}/generated)
   target_compile_features(impl_git_version PRIVATE cxx_raw_string_literals)
   add_dependencies(impl_git_version AlwaysCheckGit)