https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90252
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2019-04-25 Target Milestone|--- |9.2 Ever confirmed|0 |1 --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- Yes, the tbb effective target needs to do a link test, not just preprocessor test to look for the headers.