Dont make the mistake of thinking that the crap that was the pure gnu toolchain was in any way equal to what was available for those who could afford to run commercial unix(tm), it was an completely different world that Linux would not catch up to until the 00's mostly by absorbing frameworks and software from the world of commercial unix(tm) and from more recent developments.
I dont think i can recall any commercial Unix even shipping gcc back in the day.
I dont think i can recall any commercial Unix even shipping gcc back in the day.