Paul Eggert <egg...@cs.ucla.edu> writes:
> Autoconf's existing AC_FUNC_STRNLEN uses AC_RUN_IFELSE so this
> wouldn't work as-is.
>
> Perhaps you could write up a patch against Autoconf? That wouldn't
> count against the Gnulib quota....
Sure, but Gnulib (and by extension Emacs) does not invoke the Autoconf
test:
AC_DEFUN([gl_FUNC_STRNLEN],
[
AC_REQUIRE([gl_STRING_H_DEFAULTS])
dnl Persuade glibc <string.h> to declare strnlen().
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
AC_CHECK_DECLS_ONCE([strnlen]) <------------------------------------
if test $ac_cv_have_decl_strnlen = no; then
HAVE_DECL_STRNLEN=0
else
m4_pushdef([AC_LIBOBJ], [:])
dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]).
