mainline broken on newlib based targets?

[Dara Hazeghi]

Okay, it's not just newlib based targets. mainline
fails for me on i686-pc-linux-gnu native too:

stage1/xgcc -Bstage1/
-B/usr/local/gcc-mainline/i686-pc-linux-gnu/bin/ -c  
-g -O2 -DIN_GCC   -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic
-Wno-long-long -Werror -Werror -fno-common  
-DHAVE_CONFIG_H    -I. -Icp -I../../gcc/gcc
-I../../gcc/gcc/cp -I../../gcc/gcc/config
-I../../gcc/gcc/../include  ../../gcc/gcc/cp/friend.c
-o cp/friend.o
../../gcc/gcc/cp/except.c: In function
`nothrow_libfn_p':

../../gcc/gcc/cp/except.c:865: warning: implicit
declaration of function `libc_name_p'
make[2]: *** [cp/except.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory
`/home/dara/mainline/objdir/gcc'
make[1]: *** [stage2_build] Error 2
make[1]: Leaving directory
`/home/dara/mainline/objdir/gcc'
make: *** [bootstrap-lean] Error 2

FWIW, cfns.h is empty on my machine, so it seems that
this rule:
cp/Make-lang.in

$(srcdir)/cp/cfns.h: $(srcdir)/cp/cfns.gperf
        gperf -o -C -E -k '1-6,$$' -j1 -D -N
'libc_name_p' -L ANSI-C \
                $(srcdir)/cp/cfns.gperf >
$(srcdir)/cp/cfns.h

isn't working as it should. According to the
prerequisites page, gperg 2.7.2 should be good
enough...

Dara

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