lang/gcc on freebsd 10

[Andriy Gapon]

lang/gcc build would fail for me on FreeBSD 10 (head) with binutils-2.22
installed during its configure step with the errors like the following in
config.log:

configure:2978: checking for C compiler default output file name
configure:3000:  /usr/obj/usr/ports/lang/gcc/work/build/./prev-gcc/xgcc
-B/usr/obj/usr/ports/lang/gcc/work/build/./prev-gcc/
-B/usr/local/x86_64-portbld-freebsd10.0/bin/
-B/usr/local/x86_64-portbld-freebsd10.0/bin/
-B/usr/local/x86_64-portbld-freebsd10.0/lib/ -isystem
/usr/local/x86_64-portbld-freebsd10.0/include -isystem
/usr/local/x86_64-portbld-freebsd10.0/sys-include    -g -O2 -gtoggle
-static-libstdc++ -static-libgcc  conftest.c  >&5
xgcc: fatal error: -fuse-linker-plugin, but liblto_plugin.so not found

It seems that the error occurs because the preceding steps create
liblto_plugin.so.0.0 file, but no liblto_plugin.so link to it.  Not sure why is
that though.  Maybe something about platform misdetection.

-- 
Andriy Gapon