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#serial 7
dnl From Jim Meyering.
dnl Determine whether lstat has the bug that it succeeds when given the
dnl zero-length file name argument. The lstat from SunOS4.1.4 and the Hurd
dnl (as of 1998-11-01) do this.
dnl
dnl If it does, then define HAVE_LSTAT_EMPTY_STRING_BUG and arrange to
dnl compile the wrapper function.
dnl
AC_DEFUN([jm_FUNC_LSTAT],
[
AC_REQUIRE([AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
AC_CACHE_CHECK([whether lstat accepts an empty string],
jm_cv_func_lstat_empty_string_bug,
[AC_TRY_RUN([
# include <sys/types.h>
# include <sys/stat.h>
int
main ()
{
struct stat sbuf;
exit (lstat ("", &sbuf) ? 1 : 0);
}
],
jm_cv_func_lstat_empty_string_bug=yes,
jm_cv_func_lstat_empty_string_bug=no,
dnl When crosscompiling, assume lstat is broken.
jm_cv_func_lstat_empty_string_bug=yes)
])
if test $jm_cv_func_lstat_empty_string_bug = yes; then
AC_LIBOBJ(lstat)
AC_DEFINE_UNQUOTED(HAVE_LSTAT_EMPTY_STRING_BUG, 1,
[Define if lstat has the bug that it succeeds when given the zero-length
file name argument. The lstat from SunOS4.1.4 and the Hurd as of 1998-11-01)
do this. ])
fi
])
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