From b01784a05700204789f4e2ab7bfc8f0dd8b0f35b Mon Sep 17 00:00:00 2001
From: Samuel Neves <sneves@dei.uc.pt>
Date: Thu, 30 Jul 2020 00:03:37 +0100
Subject: [PATCH] support compilers without __has_include

---
 c/blake3_avx2_x86-64_unix.S   | 8 ++++++--
 c/blake3_avx512_x86-64_unix.S | 8 ++++++--
 c/blake3_sse41_x86-64_unix.S  | 8 ++++++--
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/c/blake3_avx2_x86-64_unix.S b/c/blake3_avx2_x86-64_unix.S
index d9019e6..14dcf5b 100644
--- a/c/blake3_avx2_x86-64_unix.S
+++ b/c/blake3_avx2_x86-64_unix.S
@@ -1,6 +1,10 @@
-#if defined(__ELF__) && defined(__CET__) && __has_include(<cet.h>)
+#if defined(__ELF__) && defined(__CET__) && defined(__has_include)
+#if __has_include(<cet.h>)
 #include <cet.h>
-#else
+#endif
+#endif
+
+#if !defined(_CET_ENDBR)
 #define _CET_ENDBR
 #endif
 
diff --git a/c/blake3_avx512_x86-64_unix.S b/c/blake3_avx512_x86-64_unix.S
index b3c9684..fb28d23 100644
--- a/c/blake3_avx512_x86-64_unix.S
+++ b/c/blake3_avx512_x86-64_unix.S
@@ -1,6 +1,10 @@
-#if defined(__ELF__) && defined(__CET__) && __has_include(<cet.h>)
+#if defined(__ELF__) && defined(__CET__) && defined(__has_include)
+#if __has_include(<cet.h>)
 #include <cet.h>
-#else
+#endif
+#endif
+
+#if !defined(_CET_ENDBR)
 #define _CET_ENDBR
 #endif
 
diff --git a/c/blake3_sse41_x86-64_unix.S b/c/blake3_sse41_x86-64_unix.S
index 6773edf..41a1eb2 100644
--- a/c/blake3_sse41_x86-64_unix.S
+++ b/c/blake3_sse41_x86-64_unix.S
@@ -1,6 +1,10 @@
-#if defined(__ELF__) && defined(__CET__) && __has_include(<cet.h>)
+#if defined(__ELF__) && defined(__CET__) && defined(__has_include)
+#if __has_include(<cet.h>)
 #include <cet.h>
-#else
+#endif
+#endif
+
+#if !defined(_CET_ENDBR)
 #define _CET_ENDBR
 #endif