Hi, When I am running: gcc -Wa,--some-custom-option everything is ok. But when I am running: gcc -flto -Wa,--some-custom-option then this option is not passed to assembler, when lto wrapper calls it. I need somehow pass this option to every assembler call, including calls under LTO. I am wondering: 1) Are there any standard way to do this? (question to gcc-help) 2) Can I do this, redefining some specs in my custom backend? (question to gcc) My experiments so far were in vain. --- With best regards, Konstantin