Fix run_test on Mac
Fix run_test on Mac

`-rdynamic` build arg from Linux was not happy.

Former-commit-id: ca2cfc744c3f362bb5b3da348262e7f43db3bf7d
Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide