roundf-ieee: Fix test failures on AIX 7.1 and OSF/1 5.1.

[pspp] / modules / isnand

diff --git a/modules/isnand b/modules/isnand
index 362b1f8226fb423abbb794abf1b21702749b40cf..1ac796d52c9f1bb721993b91f654fa04e7282d43 100644 (file)
--- a/modules/isnand
+++ b/modules/isnand
@@ -15,7 +15,10 @@ memcmp
 
 configure.ac:
 gl_FUNC_ISNAND
-if test $HAVE_ISNAND = 0; then
+m4_ifdef([gl_ISNAN], [
+  AC_REQUIRE([gl_ISNAN])
+])
+if test $HAVE_ISNAND = 0 || test $REPLACE_ISNAN = 1; then
   AC_LIBOBJ([isnand])
   gl_PREREQ_ISNAND
 fi