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-rw-r--r--CMakeLists.txt7
1 files changed, 6 insertions, 1 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5e13a7e..94d138c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,7 +38,12 @@ endif()
# Use most-recent available language dialects with GNU and Clang
if(NOT DEFINED CMAKE_C_STANDARD AND NOT CMake_NO_C_STANDARD)
- set(CMAKE_C_STANDARD 11)
+ include(${CMake_SOURCE_DIR}/Source/Checks/cm_c11_thread_local.cmake)
+ if(NOT CMake_C11_THREAD_LOCAL_BROKEN)
+ set(CMAKE_C_STANDARD 11)
+ else()
+ set(CMAKE_C_STANDARD 99)
+ endif()
endif()
if(NOT DEFINED CMAKE_CXX_STANDARD AND NOT CMake_NO_CXX_STANDARD)
include(${CMake_SOURCE_DIR}/Source/Checks/cm_cxx14_cstdio.cmake)