Clarify the dependencies on libm.

[pspp] / m4 / isnanl.m4

diff --git a/m4/isnanl.m4 b/m4/isnanl.m4
index c01ab026ab1722e5a8436896eb7f5533a159d5ef..d035c07cbdc88388599083cb4650e79387277685 100644 (file)
--- a/m4/isnanl.m4
+++ b/m4/isnanl.m4
@@ -37,6 +37,7 @@ AC_DEFUN([gl_FUNC_ISNANL],
       gl_LONG_DOUBLE_EXPONENT_LOCATION
     fi
   fi
+  AC_SUBST([ISNANL_LIBM])
 ])
 
 AC_DEFUN([gl_FUNC_ISNANL_NO_LIBM],