--- a/configure.ac	2023-06-10 10:21:38.770760698 -0500
+++ b/configure.ac	2023-06-10 10:22:01.670904090 -0500
@@ -86,7 +86,7 @@
 
 #### Functions
 AC_LINK_IFELSE(
-    [AC_LANG_PROGRAM([#include <math.h>], [double x = exp10(1.0);])],
+    [AC_LANG_PROGRAM([#include <math.h>], [double exp10(double x);], [double x = exp10(1.0);])],
     [AC_DEFINE([HAVE_EXP10], [1], [Define to 1 if you have the 'exp10' function])],
   [])