Dear All thank you for so responsive support. you are right - theoretically everything is documented; but practically a person who does not compile and build gcc every day might be confused with all these details. Anyway your advice and update really helps, thanks. Have a good weekend, Best regards, Mikhail ------- Original Message ------- Sender : Jonathan Wakely<jwakely.gcc@xxxxxxxxx> Date : Sep 11, 2015 04:17 (GMT+09:00) Title : Re: compiling gcc 5.x from the scratch: issues On 10 September 2015 at 20:15, Markus Trippelsdorf wrote: > On 2015.09.10 at 19:53 +0100, Jonathan Wakely wrote: >> Markus, I think your patch wouldn't hurt, and might help people who >> fail to read the instructions carefully, so I suggest sending it to >> gcc-patches for review. > > I did that already and Jeff has approved the patch. Will commit it > tomorrow. Oh nice, thanks.