Include <functional> for std::function, and do not link libstdc++fs, which libc++ has no
equivalent of and needs none.

--- a/src/roctracer/memory_pool.h
+++ b/src/roctracer/memory_pool.h
@@ -28,6 +28,7 @@
 #include <cstdlib>
 #include <cstddef>
 #include <cstring>
+#include <functional>
 #include <future>
 #include <mutex>
 #include <type_traits>
--- a/plugin/file/CMakeLists.txt
+++ b/plugin/file/CMakeLists.txt
@@ -44,7 +44,7 @@
 
 target_link_options(file_plugin PRIVATE -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/../exportmap -Wl,--no-undefined)
 
-target_link_libraries(file_plugin PRIVATE util roctracer  amd_comgr hsa-runtime64::hsa-runtime64 stdc++fs amd_comgr)
+target_link_libraries(file_plugin PRIVATE util roctracer  amd_comgr hsa-runtime64::hsa-runtime64 amd_comgr)
 
 install(TARGETS file_plugin LIBRARY
         DESTINATION ${CMAKE_INSTALL_LIBDIR}