Merge pull request #2454 from mkuron/patch-10

prevent 80-bit arithmetic on old Intel processors
espressomd · Jan 21, 2019 · 9eda4d2 · 9eda4d2
2 parents 99bc066 + 313916c
commit 9eda4d2
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -408,6 +408,11 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel" AND CMAKE_CXX_COMPILER_VERSION VERSIO
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBOOST_NO_CXX11_VARIADIC_TEMPLATES")
 endif()
 
+# prevent 80-bit arithmetic on old Intel processors
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_SIZEOF_VOID_P EQUAL 4 AND CMAKE_SYSTEM_PROCESSOR MATCHES "[xX]86")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffloat-store")
+endif()
+
 set(CMAKE_MACOSX_RPATH TRUE)
 
 if( WITH_ASAN AND WITH_MSAN )