Pass c99 to compiler in CMakeLists.txt
Fixes #3631 Signed-off-by: okhowang(王沛文) <okhowang@tencent.com>
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@ -18,6 +18,12 @@
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*
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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*/
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#ifndef _BSD_SOURCE
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#define _BSD_SOURCE
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#endif
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#ifndef _DEFAULT_SOURCE
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#define _DEFAULT_SOURCE
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#endif
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#include "common.h"
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#include "common.h"
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@ -170,6 +170,8 @@ string(REGEX MATCH "Clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER_ID}")
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include(CheckCCompilerFlag)
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include(CheckCCompilerFlag)
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set(CMAKE_C_STANDARD 99)
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if(CMAKE_COMPILER_IS_GNU)
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if(CMAKE_COMPILER_IS_GNU)
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# some warnings we want are not available with old GCC versions
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# some warnings we want are not available with old GCC versions
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# note: starting with CMake 2.8 we could use CMAKE_C_COMPILER_VERSION
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# note: starting with CMake 2.8 we could use CMAKE_C_COMPILER_VERSION
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