diff -rauN oneTBB-2021.5.0/cmake/compilers/GNU.cmake oneTBB-2021.5.0-no-waitpkg-patch/cmake/compilers/GNU.cmake
--- oneTBB-2021.5.0/cmake/compilers/GNU.cmake	2021-12-17 14:40:54.000000000 +0100
+++ oneTBB-2021.5.0-no-waitpkg-patch/cmake/compilers/GNU.cmake	2022-01-12 16:04:07.448846997 +0100
@@ -36,7 +36,7 @@
 endif()
 
 # Enable Intel(R) Transactional Synchronization Extensions (-mrtm) and WAITPKG instructions support (-mwaitpkg) on relevant processors
-if (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86|AMD64)")
+if (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86|AMD64|i.86)")
     set(TBB_COMMON_COMPILE_FLAGS ${TBB_COMMON_COMPILE_FLAGS} -mrtm $<$<AND:$<NOT:$<CXX_COMPILER_ID:Intel>>,$<NOT:$<VERSION_LESS:${CMAKE_CXX_COMPILER_VERSION},11.0>>>:-mwaitpkg>)
 endif()