make sure _GNU_SOURCE is defined

need to get CBAUD, etc.
managarm · Dec 11, 2023 · f32823f · f32823f
1 parent 85862a4
commit f32823f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/options/posix/generic/termios-stubs.cpp b/options/posix/generic/termios-stubs.cpp
@@ -1,3 +1,6 @@
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
 
 #include <errno.h>
 #include <termios.h>