diff --git a/internal/glfw/glfw/c_glfw_bsd.go b/internal/glfw/glfw/c_glfw_linbsd.go
similarity index 95%
rename from internal/glfw/glfw/c_glfw_bsd.go
rename to internal/glfw/glfw/c_glfw_linbsd.go
index dff3efa16..ee5347e04 100644
--- a/internal/glfw/glfw/c_glfw_bsd.go
+++ b/internal/glfw/glfw/c_glfw_linbsd.go
@@ -2,7 +2,7 @@
 // SPDX-FileCopyrightText: 2012 The glfw3-go Authors
 // SPDX-FileCopyrightText: 2023 The Ebitengine Authors
 
-//go:build freebsd || netbsd || openbsd
+//go:build freebsd || linux || netbsd || openbsd
 
 package glfw
 
diff --git a/internal/glfw/glfw/c_glfw_linux.go b/internal/glfw/glfw/c_glfw_linux.go
deleted file mode 100644
index 24f0d299a..000000000
--- a/internal/glfw/glfw/c_glfw_linux.go
+++ /dev/null
@@ -1,30 +0,0 @@
-// SPDX-License-Identifier: BSD-3-Clause
-// SPDX-FileCopyrightText: 2012 The glfw3-go Authors
-// SPDX-FileCopyrightText: 2023 The Ebitengine Authors
-
-package glfw
-
-/*
-#ifdef _GLFW_WAYLAND
-	#include "glfw/src/wl_init.c"
-	#include "glfw/src/wl_monitor.c"
-	#include "glfw/src/wl_window.c"
-	#include "glfw/src/wayland-idle-inhibit-unstable-v1-client-protocol.c"
-	#include "glfw/src/wayland-pointer-constraints-unstable-v1-client-protocol.c"
-	#include "glfw/src/wayland-relative-pointer-unstable-v1-client-protocol.c"
-	#include "glfw/src/wayland-viewporter-client-protocol.c"
-	#include "glfw/src/wayland-xdg-decoration-unstable-v1-client-protocol.c"
-	#include "glfw/src/wayland-xdg-shell-client-protocol.c"
-#endif
-#ifdef _GLFW_X11
-	#include "glfw/src/x11_window.c"
-	#include "glfw/src/x11_init.c"
-	#include "glfw/src/x11_monitor.c"
-	#include "glfw/src/glx_context.c"
-#endif
-#include "glfw/src/posix_time.c"
-#include "glfw/src/posix_thread.c"
-#include "glfw/src/xkb_unicode.c"
-#include "glfw/src/egl_context.c"
-*/
-import "C"
diff --git a/internal/glfw/glfw/glfw/src/x11_init.c b/internal/glfw/glfw/glfw/src/x11_init.c
index cfcaa95be..181691383 100644
--- a/internal/glfw/glfw/glfw/src/x11_init.c
+++ b/internal/glfw/glfw/glfw/src/x11_init.c
@@ -27,6 +27,10 @@
 // It is fine to use C99 in this file because it will not be built with VS
 //========================================================================
 
+#if !defined(_GNU_SOURCE)
+ #define _GNU_SOURCE
+#endif
+
 #include "internal.h"
 
 #include <X11/Xresource.h>
diff --git a/internal/glfw/glfw/glfw/src/x11_window.c b/internal/glfw/glfw/glfw/src/x11_window.c
index 5dbe876d6..319c4cae3 100644
--- a/internal/glfw/glfw/glfw/src/x11_window.c
+++ b/internal/glfw/glfw/glfw/src/x11_window.c
@@ -27,7 +27,9 @@
 // It is fine to use C99 in this file because it will not be built with VS
 //========================================================================
 
-#define _GNU_SOURCE
+#if !defined(_GNU_SOURCE)
+ #define _GNU_SOURCE
+#endif
 
 #include "internal.h"