I'm faced with this error during configure :
checking for correct ltmain.sh version... no
*** [Gentoo] sanity check failed! ***
*** libtool.m4 and ltmain.sh have a version mismatch! ***
*** (libtool.m4 = 1.5.22, ltmain.sh = 1.5.6) ***
libtoolize --copy --force
if appropriate, please contact the maintainer of this
package (or your distribution) for help.
I'm on amd64 but this is not the main cause ;)
emerge --info please.
Created attachment 101278 [details]
If you really need it ...
fixed today ... don't know why, sorry for the noise.