sys-fs/fuse-2.9.7 fails to emerge when gold is used as the system linker. This is a known - and quite old - problem. The ebuild emerges fine when ld.bfd is used instead.
*** Bug 595282 has been marked as a duplicate of this bug. ***
For reference: https://blog.flameeyes.eu/2011/06/gold-readiness-obstacle-2-base-versioning
sys-fs/fuse-2.9.7 links with sys-devel/binutils-2.26.1
Opened stabilization request, Bug 595288.
Created attachment 449278 [details, diff] Switch to ld.bfd if ld.gold is in use The following patch is to fuse-2.9.7.ebuild , which forces ld.bfd in place of ld.gold. Note that its a lot bigger than necessary because libtool is used in fuse to handle linking, and it strips out the '-fuse-ld=bfd' option that the 'tc-ld-disable-gold' function from toolchain-funcs provides. I looked into patching libtool.eclass instead but it's a little over my head. As this is the only consumer of the function right now I don't see much point in adding it to an eclass, so I just appended it in the ebuild for now.
*** Bug 610788 has been marked as a duplicate of this bug. ***
gold from sys-devel/binutils-2.26.1 does indeed handle this version of FUSE well. Now that said version of binutils has been widely stabilised, the bug can be closed.