ali hagigat <hagigatali@xxxxxxxxx> writes: > GCCc manual says if we want to enable some built-in functions > selectively after -fno-builtin we can define some macros like: > #define abs(n) __builtin_abs ((n)) > > So there is no way to disable __builtin_abs() function at all? Correct. You can disable special treatment the abs function, but not the of the __builtin_abs function. Ian