From: Arnaud Giersch <arnaud.giersch@univ-fcomte.fr>
Date: Sun, 28 Oct 2018 22:00:16 +0000 (+0100)
Subject: Workaround bug in Intel-C.cmake.
X-Git-Tag: v3_22~834
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/cbbbccabab2c729ad7c5c67e93705a1eb693c284?ds=sidebyside

Workaround bug in Intel-C.cmake.

See:
https://gitlab.kitware.com/cmake/cmake/issues/18166
https://gitlab.kitware.com/cmake/cmake/commit/735e69f4458850cc335710af36d1382b891cbb5e
---

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)