From cbbbccabab2c729ad7c5c67e93705a1eb693c284 Mon Sep 17 00:00:00 2001
From: Arnaud Giersch <arnaud.giersch@univ-fcomte.fr>
Date: Sun, 28 Oct 2018 23:00:16 +0100
Subject: [PATCH] Workaround bug in Intel-C.cmake.

See:
https://gitlab.kitware.com/cmake/cmake/issues/18166
https://gitlab.kitware.com/cmake/cmake/commit/735e69f4458850cc335710af36d1382b891cbb5e
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3aab3e42a3..7fc7248073 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,6 +39,10 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_C_STANDARD 11)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 
+if (CMAKE_C_COMPILER_ID STREQUAL "Intel" AND CMAKE_C11_EXTENSION_COMPILE_OPTION STREQUAL "-std=c11")
+  set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11")
+endif()
+
 ### Check threading support
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 find_package(Threads)
-- 
2.20.1