-for ac_header in ctype.h dirent.h fcntl.h libgen.h locale.h nl_types.h process.h signal.h stdarg.h stdio.h time.h unistd.h sys/param.h sys/select.h sys/signal.h sys/stat.h sys/time.h sys/types.h sys/wait.h
+
+
+for ac_header in ctype.h dirent.h fcntl.h libgen.h locale.h nl_types.h process.h signal.h stdarg.h stdio.h string.h stdlib.h time.h unistd.h sys/param.h sys/select.h sys/signal.h sys/stat.h sys/time.h sys/types.h sys/wait.h
do
as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
if eval "test \"\${$as_ac_Header+set}\" = set"; then