--- a/gettext-tools/configure
+++ b/gettext-tools/configure
@@ -44607,6 +44607,7 @@ $as_echo "$gl_cv_func_log10_works" >&6;
 
 
   gl_LIBOBJS="$gl_LIBOBJS log10.$ac_objext"
+  LOG10_LIBM="-lm"
 
   fi