On 7/1/24 02:16, Po Lu wrote:
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]).
The line immediately after the last line you quoted is:
AC_FUNC_STRNLEN
and that invokes the Autoconf test.
