Hi Thomas, I found your email about this problem online and figured I'd shoot you a message to see if you had a solution for it or could point me in the right direction. I'm trying to build the gomp-4_5 tree to test the openACC support, and I've gotten it to successfully build using the instructions at https://gcc.gnu.org/wiki/Offloading#How_to_try_offloading_enabled_GCC but I keep running into some errors at compile time where PTX is embedded in the assembly code. The error messages I'm getting are the same as the ones another person was getting and had mailed you about, so I was wondering if you knew what the cause is (https://gcc.gnu.org/ml/gcc-help/2015-09/msg00125.html) The errors I am getting are along the lines of : /tmp/cc5ctTXY.s:3: Error: unknown pseudo-op: `.target' /tmp/cc5ctTXY.s:4: Error: unknown pseudo-op: `.address_size' /tmp/cc5ctTXY.s:9: Error: unknown pseudo-op: `.entry' /tmp/cc5ctTXY.s:12: Error: unknown pseudo-op: `.entry' I've tried building both by setting the prefix in ./configure to the target directory and using the DESTDIR at install time, but keep getting the same issues. Any help would be greatly appreciated -Ryan