3 # Define HAVE_C_MALLOPT if mallopt() works.
4 AN_IDENTIFIER([mallopt], [AC_C_MALLOPT])
5 AC_DEFUN([AC_C_MALLOPT],
6 [AC_CACHE_CHECK([for mallopt], ac_cv_c_mallopt,
10 int main(int argc, char **argv) {
11 mallopt(M_ARENA_MAX, 1);
14 [ac_cv_c_mallopt=yes],
15 [ac_cv_c_mallopt=no])])
16 if test $ac_cv_c_mallopt = yes; then
17 AC_DEFINE([HAVE_C_MALLOPT], 1,
18 [Define to 1 if glibc mallopt exists.])