[Bug other/68702] make uninstall not operational

[science0.delphin at laposte dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68702

--- Comment #1 from science0.delphin at laposte dot net ---
Created attachment 36922
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36922&action=edit
The config.log issued by ./configure etc.