The gcc build issues are all fixed. Thanks ! The cl scenario for host-tools remains, I'm still getting entries like C:/Program\ Files\ (x86)/Windows\ Kits/8.0/include/shared/ConcurrencySal.h and C:/Program\ Files\ (x86)/Windows\ Kits/8.0/include/shared/sal.h Thank you for looking into the rc handling too ;) Regards, Amine.