1*9d178c92SEd MasteDo not build any cross compiler in the cross-tools stage of buildworld. 27a206c31SWarren BlockWhen compiling a different version of 32bf36e7eSWarner Losh.Fx 47a206c31SWarren Blockthan what is installed on the system, provide an alternate 52bf36e7eSWarner Loshcompiler with XCC to ensure success. 67a206c31SWarren BlockWhen compiling with an identical version of 72bf36e7eSWarner Losh.Fx 82bf36e7eSWarner Loshto the host, this option may be safely used. 92bf36e7eSWarner LoshThis option may also be safe when the host version of 102bf36e7eSWarner Losh.Fx 112bf36e7eSWarner Loshis close to the sources being built, but all bets are off if there have 122bf36e7eSWarner Loshbeen any changes to the toolchain between the versions. 13