diff --git a/examples/particles.c b/examples/particles.c
index baafe826a..7a896a62e 100644
--- a/examples/particles.c
+++ b/examples/particles.c
@@ -24,6 +24,8 @@
 //
 //========================================================================
 
+#define _GNU_SOURCE
+
 #if defined(_MSC_VER)
  // Make MS math.h define M_PI
  #define _USE_MATH_DEFINES
diff --git a/src/linux_joystick.c b/src/linux_joystick.c
index d8a916b08..02fd82322 100644
--- a/src/linux_joystick.c
+++ b/src/linux_joystick.c
@@ -25,6 +25,8 @@
 //
 //========================================================================
 
+#define _GNU_SOURCE
+
 #include "internal.h"
 
 #if defined(GLFW_BUILD_LINUX_JOYSTICK)
diff --git a/src/posix_time.c b/src/posix_time.c
index 4d7bd7cea..2d2b15618 100644
--- a/src/posix_time.c
+++ b/src/posix_time.c
@@ -25,6 +25,8 @@
 //
 //========================================================================
 
+#define _GNU_SOURCE
+
 #include "internal.h"
 
 #if defined(GLFW_BUILD_POSIX_TIMER)
diff --git a/src/wl_init.c b/src/wl_init.c
index 704906381..a51bb3032 100644
--- a/src/wl_init.c
+++ b/src/wl_init.c
@@ -24,6 +24,8 @@
 //
 //========================================================================
 
+#define _GNU_SOURCE
+
 #include "internal.h"
 
 #if defined(_GLFW_WAYLAND)
diff --git a/src/wl_window.c b/src/wl_window.c
index 4220d17e0..9610b06a9 100644
--- a/src/wl_window.c
+++ b/src/wl_window.c
@@ -40,7 +40,9 @@
 #include <sys/mman.h>
 #include <sys/timerfd.h>
 #include <poll.h>
+#if __has_include(<linux/input-event-codes.h>)
 #include <linux/input-event-codes.h>
+#endif
 
 #include "wayland-client-protocol.h"
 #include "xdg-shell-client-protocol.h"