1 files changed, 2 insertions, 1 deletions
diff --git a/meson.build b/meson.build
index 85d6176..b4b203a 100644
--- a/meson.build
+++ b/meson.build
@@ -43,7 +43,8 @@ add_project_arguments(
     #'-Wconversion',
     '-Wshadow',
     '-Wno-unused-parameter',
-    '-D_POSIX_C_SOURCE=200809L',
+    '-D_XOPEN_SOURCE=700',
+    '-D_FORTIFY_SOURCE=2',
   ],
   language: 'c'
 )