I cannot figure out whether it's possible to use custom structure types in an .opt file like this: TargetVariable const struct foo *bar Including the file that defines the struct type does not help. HeaderInclude <path>/struct_foo.h ==> make[2]: Entering directory `.../build-march/gcc' build/gengtype \ -S ../../gcc -I gtyp-input.list -w tmp-gtype.state /bin/sh ../../gcc/../move-if-change tmp-gtype.state gtype.state build/gengtype \ -r gtype.state warning: structure `foo' used but not defined (null):0: incomplete structure `foo' warning: structure `foo' used but not defined (null):0: incomplete structure `foo' make[2]: *** [s-gtype] Error 1 Is there a way to do this (other than just using "void *")? Ciao Dominik ^_^ ^_^ -- Dominik Vogt IBM Germany