From eceecc5b2cade40e2ffe7e4ff4c7d2e16883961a Mon Sep 17 00:00:00 2001 From: Yann Collet Date: Sun, 19 Jun 2022 14:52:32 -0700 Subject: [PATCH] removed explicit compilation standard from cmake script it's not expected to be useful and can actually lead to subtle side effects such as #3163. --- .../cmake/CMakeModules/AddZstdCompilationFlags.cmake | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake b/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake index e23b9d603eb..8d04458c3eb 100644 --- a/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake +++ b/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake @@ -22,10 +22,12 @@ endfunction() macro(ADD_ZSTD_COMPILATION_FLAGS) if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang" OR MINGW) #Not only UNIX but also WIN32 for MinGW - #Set c++11 by default - EnableCompilerFlag("-std=c++11" false true) - #Set c99 by default - EnableCompilerFlag("-std=c99" true false) + # It's possible to select the exact standard used for compilation. + # It's not necessary, but can be employed for specific purposes. + # Note that zstd source code is compatible with both C++98 and above + # and C-gnu90 (c90 + long long + variadic macros ) and above + # EnableCompilerFlag("-std=c++11" false true) # Set C++ compilation to c++11 standard + # EnableCompilerFlag("-std=c99" true false) # Set C compiation to c99 standard if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND MSVC) # clang-cl normally maps -Wall to -Weverything. EnableCompilerFlag("/clang:-Wall" true true) @@ -48,7 +50,7 @@ macro(ADD_ZSTD_COMPILATION_FLAGS) if (CMAKE_GENERATOR MATCHES "Visual Studio" AND ACTIVATE_MULTITHREADED_COMPILATION) EnableCompilerFlag("/MP" true true) endif () - + # UNICODE SUPPORT EnableCompilerFlag("/D_UNICODE" true true) EnableCompilerFlag("/DUNICODE" true true)