diff --git a/GL/glx/indirect_dispatch_swap.c b/GL/glx/indirect_dispatch_swap.c
index 9c58ef1cd..1d45676b3 100644
--- a/GL/glx/indirect_dispatch_swap.c
+++ b/GL/glx/indirect_dispatch_swap.c
@@ -28,7 +28,7 @@
 #include <X11/Xmd.h>
 #include <GL/gl.h>
 #include <GL/glxproto.h>
-#ifdef __linux__
+#if defined(__linux__) || defined(__GNU__)
 #include <byteswap.h>
 #elif defined(__OpenBSD__)
 #include <sys/endian.h>
diff --git a/GL/glx/indirect_reqsize.c b/GL/glx/indirect_reqsize.c
index 3906bd11d..1c332da79 100644
--- a/GL/glx/indirect_reqsize.c
+++ b/GL/glx/indirect_reqsize.c
@@ -31,7 +31,7 @@
 #include "indirect_size.h"
 #include "indirect_reqsize.h"
 
-#if defined(linux)
+#if defined(__linux__) || defined(__GNU__)
 #  include <byteswap.h>
 #  define SWAP_32(v)  do { (v) = bswap_32(v); } while(0)
 #else
diff --git a/GL/glx/indirect_util.c b/GL/glx/indirect_util.c
index 93f1484d7..2d64f3399 100644
--- a/GL/glx/indirect_util.c
+++ b/GL/glx/indirect_util.c
@@ -28,7 +28,7 @@
 #include <X11/Xmd.h>
 #include <GL/gl.h>
 #include <GL/glxproto.h>
-#ifdef __linux__
+#if defined(__linux__) || defined(__GNU__)
 #include <byteswap.h>
 #elif defined(__OpenBSD__)
 #include <sys/endian.h>