fenv.h missing in hurd cross compiling

[major_ghz]

hi

i try to cross compiling hurd from scratch with :
http://fondriest.frederic.free.fr/hurd/GNU_HURD%20from%20scratch.html

i use this version of tools

binutils 2.25
gcc 4.8.2

i get hurd here : http://savannah.gnu.org/git/?group=hurd

additional tools are :

bash-4.3
coreutils-8.23.tar

i install on my ubuntu 14.04 LTS:
g++

makeinfo
and ncurses

when in try to compile gcc (cross-gcc (#1))

i have a fenv.h missing :

../../../gcc-4.8.2/libgcc/config/libbid/bid_decimal_globals.c:47:18:
fatal error: fenv.h: No such file or directory
#include <fenv.h>

can you help me ?
regard,
major_ghz

p.s. if you need more information ask me...

[Esa Peuha]

major_ghz: building libgcc is actually expected to fail the first time
you try it, so if that is the only failing target, then there is nothing
wrong and you should keep following the instructions.