diff --git a/CMakeLists.txt b/CMakeLists.txt index 507676667c9..cae1c24df33 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -2774,7 +2774,7 @@ if(WITH_CPP11) endif() # Visual Studio has all standards it supports available by default -if(CMAKE_COMPILER_IS_GNUCC) +if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang" OR CMAKE_C_COMPILER_ID MATCHES "Intel") # Use C99 + GNU extensions, works with GCC, Clang, ICC set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99") endif()