From cab949a93911941bfd44f996e02eaad8498683d9 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 29 Jul 2019 09:44:05 +0530
Subject: [PATCH] Fix building with compilers that dont support __has_include

---
 glfw/backend_utils.h | 5 +++++
 glfw/wl_init.c       | 4 ++++
 kitty/loop-utils.h   | 7 +++++++
 3 files changed, 16 insertions(+)

diff --git a/glfw/backend_utils.h b/glfw/backend_utils.h
index f69fe722ddf..49e3c0d3c2e 100644
--- a/glfw/backend_utils.h
+++ b/glfw/backend_utils.h
@@ -29,10 +29,15 @@
 #include <unistd.h>
 #include <stdbool.h>
 
+#ifdef __has_include
 #if __has_include(<sys/eventfd.h>)
 #define HAS_EVENT_FD
 #include <sys/eventfd.h>
 #endif
+#else
+#define HAS_EVENT_FD
+#include <sys/eventfd.h>
+#endif
 
 typedef unsigned long long id_type;
 typedef void(*watch_callback_func)(int, int, void*);
diff --git a/glfw/wl_init.c b/glfw/wl_init.c
index 074a3c5b98d..3f3c8f00f77 100644
--- a/glfw/wl_init.c
+++ b/glfw/wl_init.c
@@ -41,11 +41,15 @@
 #include <fcntl.h>
 #include <wayland-client.h>
 // Needed for the BTN_* defines
+#ifdef __has_include
 #if __has_include(<linux/input.h>)
 #include <linux/input.h>
 #elif __has_include(<dev/evdev/input.h>)
 #include <dev/evdev/input.h>
 #endif
+#else
+#include <linux/input.h>
+#endif
 
 
 static inline int min(int n1, int n2)
diff --git a/kitty/loop-utils.h b/kitty/loop-utils.h
index 128b86e4b51..efe4cf69306 100644
--- a/kitty/loop-utils.h
+++ b/kitty/loop-utils.h
@@ -10,6 +10,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 
+#ifdef __has_include
 #if __has_include(<sys/signalfd.h>)
 #define HAS_SIGNAL_FD
 #include <sys/signalfd.h>
@@ -19,6 +20,12 @@
 #define HAS_EVENT_FD
 #include <sys/eventfd.h>
 #endif
+#else
+#define HAS_SIGNAL_FD
+#include <sys/signalfd.h>
+#define HAS_EVENT_FD
+#include <sys/eventfd.h>
+#endif
 
 typedef struct {
 #ifndef HAS_EVENT_FD