Add feature test macro for fileno()

Defining _POSIX_C_SOURCE is required for POSIX fileno() to become available. Signed-off-by: Joseph Schuchart <[email protected]>
open-mpi · Jul 9, 2024 · ab7724c · ab7724c
1 parent f64f37b
commit ab7724c
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/opal/util/keyval/keyval_lex.l b/opal/util/keyval/keyval_lex.l
@@ -23,6 +23,9 @@
  * $HEADER$
  */
 
+// needed for fileno()
+#define _POSIX_C_SOURCE 200809L
+
 #include "opal_config.h"
 
 #include <stdio.h>