failure in nightly build

[<don...@is...>]

Below is the end of the transcript of build from cvs.
Let me know if more info is needed.
====

mv unistd.h-t unistd.h
make  all-recursive
make[2]: Entering directory `/tmp/clisp/build-dir/gllib'
make[3]: Entering directory `/tmp/clisp/build-dir'
make[3]: Nothing to be done for `am--refresh'.
make[3]: Leaving directory `/tmp/clisp/build-dir'
make[3]: Entering directory `/tmp/clisp/build-dir/gllib'
make[4]: Entering directory `/tmp/clisp/build-dir'
make[4]: Nothing to be done for `am--refresh'.
make[4]: Leaving directory `/tmp/clisp/build-dir'
depbase=`echo localcharset.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../src/gllib -I..  -I../intl   -g -O2 -W -Wswitch -Wcomment -Wpointer-arith -Wimplicit -Wreturn-type -Wmissing-declarations -Wno-sign-compare -Wno-format-nonliteral -O2 -fexpensive-optimizations -falign-functions=4 -DUNICODE -I.  -MT localcharset.lo -MD -MP -MF $depbase.Tpo -c -o localcharset.lo ../../src/gllib/localcharset.c &&\
mv -f $depbase.Tpo $depbase.Plo
 gcc -DHAVE_CONFIG_H -I. -I../../src/gllib -I.. -I../intl -g -O2 -W -Wswitch -Wcomment -Wpointer-arith -Wimplicit -Wreturn-type -Wmissing-declarations -Wno-sign-compare -Wno-format-nonliteral -O2 -fexpensive-optimizations -falign-functions=4 -DUNICODE -I. -MT localcharset.lo -MD -MP -MF .deps/localcharset.Tpo -c ../../src/gllib/localcharset.c  -fPIC -DPIC -o .libs/localcharset.o
In file included from ../../src/gllib/localcharset.c:29:
./stdlib.h:45:11: error: token "@" is not valid in preprocessor expressions
./stdlib.h:49:6: error: token "@" is not valid in preprocessor expressions
make[3]: *** [localcharset.lo] Error 1
make[3]: Leaving directory `/tmp/clisp/build-dir/gllib'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/tmp/clisp/build-dir/gllib'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/tmp/clisp/build-dir/gllib'
make: *** [gllib] Error 2