for the avr prort I'd like to change some GTYed rtx from atatic to extern, i.e. from // avr.c static GTY(()) rtx var; to // avr-protos.h #ifdef RTX_CODE extern GTY(()) rtx var; #endif /* RTX_CODE */ // avr.c rtx var; In the first variant I see markers generated in gt-avr.h but in the second variant I cannot find any markers for var in the whole build gcc directory. What am I missing? With the following additional line it works and there are markers in gt-avr.h: // avr.c extern GTY(()) rtx var; rtx var; Who is responsible for the global markers? I'd expect a reference to var in at least one place of some auto-generated h file... >From http://gcc.gnu.org/onlinedocs/gccint/GGC-Roots.html the second variant should work, shouldn't it? Johann
