From ec4abaea25a6e96ee09e5df7f460755266410af2 Mon Sep 17 00:00:00 2001
From: Mathieu Faverge <mathieu.faverge@inria.fr>
Date: Mon, 11 Oct 2021 19:37:01 +0200
Subject: [PATCH] cmake: check for fallthrough attribute
---
CMakeLists.txt | 21 ++++++++++++++++++++-
include/chameleon/config.h.in | 7 +++++++
2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b7a6af28..2c515d7e5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -503,13 +503,32 @@ else (NOT CHAMELEON_SIMULATION)
endif(NOT CHAMELEON_SIMULATION)
-# getopt
+# Check for getopt
+# ----------------
unset(CMAKE_REQUIRED_LIBRARIES)
check_include_files(getopt.h CHAMELEON_HAVE_GETOPT_H)
if (CHAMELEON_HAVE_GETOPT_H)
check_function_exists(getopt_long CHAMELEON_HAVE_GETOPT_LONG)
endif()
+# Check for attribute fallthrough
+# -------------------------------
+check_c_source_compiles("
+#include <stdarg.h>
+int main(void) {
+ int a = 2;
+ switch( a ){
+ case 0:
+ __attribute__((fallthrough));
+ default:
+ ;
+ }
+ return 0;
+}
+"
+ HAVE_FALLTHROUGH
+ )
+
# Add option to exploit cublas API v2
# -----------------------------------
cmake_dependent_option(CHAMELEON_USE_CUBLAS_V2
diff --git a/include/chameleon/config.h.in b/include/chameleon/config.h.in
index dc878d47b..2b7e3e4bc 100644
--- a/include/chameleon/config.h.in
+++ b/include/chameleon/config.h.in
@@ -70,6 +70,13 @@
/* chameleon runtime starpu */
#cmakedefine CHAMELEON_ENABLE_PRUNING_STATS
+#cmakedefine HAVE_FALLTHROUGH
+#if defined(HAVE_FALLTHROUGH)
+#define chameleon_attr_fallthrough __attribute__((fallthrough))
+#else
+#define chameleon_attr_fallthrough do {} while(0)
+#endif
+
#ifdef BEGIN_C_DECLS
#undef BEGIN_C_DECLS
#endif
--
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