fix(patches): add rstan entry to skip removed tbb_stddef.h #114
2026-07-14
fix(patches): add rstan entry to skip removed tbb_stddef.h
StanHeaders' init_threadpool_tbb.hpp unconditionally includes the legacy <tbb/tbb_stddef.h> for TBB version detection, but that header was removed in oneTBB 2021+ (the version StanHeaders now bundles), so rstan's Module.cpp fails to compile when rstan is pulled in as a transitive dependency (e.g. of ctsem). Pre-define TBB_INTERFACE_NEW via CPPFLAGS so the header's own guard skips the removed include and selects the modern tbb/global_control.h + tbb/task_arena.h path that the bundled TBB provides. Preserve -I/usr/local/include since the CPPFLAGS override replaces the R default.