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-rw-r--r--3rdparty/zstd/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake121
1 files changed, 121 insertions, 0 deletions
diff --git a/3rdparty/zstd/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake b/3rdparty/zstd/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake
new file mode 100644
index 00000000000..5f179989b68
--- /dev/null
+++ b/3rdparty/zstd/build/cmake/CMakeModules/AddZstdCompilationFlags.cmake
@@ -0,0 +1,121 @@
+include(CheckCXXCompilerFlag)
+include(CheckCCompilerFlag)
+# VERSION_GREATER_EQUAL requires CMake 3.7 or later.
+# https://cmake.org/cmake/help/latest/command/if.html#version-greater-equal
+if (CMAKE_VERSION VERSION_LESS 3.18)
+ set(ZSTD_HAVE_CHECK_LINKER_FLAG false)
+else ()
+ set(ZSTD_HAVE_CHECK_LINKER_FLAG true)
+endif ()
+if (ZSTD_HAVE_CHECK_LINKER_FLAG)
+ include(CheckLinkerFlag)
+endif()
+
+function(EnableCompilerFlag _flag _C _CXX _LD)
+ string(REGEX REPLACE "\\+" "PLUS" varname "${_flag}")
+ string(REGEX REPLACE "[^A-Za-z0-9]+" "_" varname "${varname}")
+ string(REGEX REPLACE "^_+" "" varname "${varname}")
+ string(TOUPPER "${varname}" varname)
+ if (_C)
+ CHECK_C_COMPILER_FLAG(${_flag} C_FLAG_${varname})
+ if (C_FLAG_${varname})
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_flag}" PARENT_SCOPE)
+ endif ()
+ endif ()
+ if (_CXX)
+ CHECK_CXX_COMPILER_FLAG(${_flag} CXX_FLAG_${varname})
+ if (CXX_FLAG_${varname})
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_flag}" PARENT_SCOPE)
+ endif ()
+ endif ()
+ if (_LD)
+ # We never add a linker flag with CMake < 3.18. We will
+ # implement CHECK_LINKER_FLAG() like feature for CMake < 3.18
+ # or require CMake >= 3.18 when we need to add a required
+ # linker flag in future.
+ #
+ # We also skip linker flags check for MSVC compilers (which includes
+ # clang-cl) since currently check_linker_flag() doesn't give correct
+ # results for this configuration,
+ # see: https://gitlab.kitware.com/cmake/cmake/-/issues/22023
+ if (ZSTD_HAVE_CHECK_LINKER_FLAG AND NOT MSVC)
+ CHECK_LINKER_FLAG(C ${_flag} LD_FLAG_${varname})
+ else ()
+ set(LD_FLAG_${varname} false)
+ endif ()
+ if (LD_FLAG_${varname})
+ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${_flag}" PARENT_SCOPE)
+ set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${_flag}" PARENT_SCOPE)
+ endif ()
+ endif ()
+endfunction()
+
+macro(ADD_ZSTD_COMPILATION_FLAGS)
+ if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang" OR MINGW) #Not only UNIX but also WIN32 for MinGW
+ # 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 false)
+ else ()
+ EnableCompilerFlag("-Wall" true true false)
+ endif ()
+ EnableCompilerFlag("-Wextra" true true false)
+ EnableCompilerFlag("-Wundef" true true false)
+ EnableCompilerFlag("-Wshadow" true true false)
+ EnableCompilerFlag("-Wcast-align" true true false)
+ EnableCompilerFlag("-Wcast-qual" true true false)
+ EnableCompilerFlag("-Wstrict-prototypes" true false false)
+ # Enable asserts in Debug mode
+ if (CMAKE_BUILD_TYPE MATCHES "Debug")
+ EnableCompilerFlag("-DDEBUGLEVEL=1" true true false)
+ endif ()
+ # Add noexecstack flags
+ # LDFLAGS
+ EnableCompilerFlag("-z noexecstack" false false true)
+ # CFLAGS & CXXFLAGS
+ EnableCompilerFlag("-Qunused-arguments" true true false)
+ EnableCompilerFlag("-Wa,--noexecstack" true true false)
+ elseif (MSVC) # Add specific compilation flags for Windows Visual
+
+ set(ACTIVATE_MULTITHREADED_COMPILATION "ON" CACHE BOOL "activate multi-threaded compilation (/MP flag)")
+ if (CMAKE_GENERATOR MATCHES "Visual Studio" AND ACTIVATE_MULTITHREADED_COMPILATION)
+ EnableCompilerFlag("/MP" true true false)
+ endif ()
+
+ # UNICODE SUPPORT
+ EnableCompilerFlag("/D_UNICODE" true true false)
+ EnableCompilerFlag("/DUNICODE" true true false)
+ # Enable asserts in Debug mode
+ if (CMAKE_BUILD_TYPE MATCHES "Debug")
+ EnableCompilerFlag("/DDEBUGLEVEL=1" true true false)
+ endif ()
+ endif ()
+
+ # Remove duplicates compilation flags
+ foreach (flag_var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+ CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
+ CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+ CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+ if( ${flag_var} )
+ separate_arguments(${flag_var})
+ string(REPLACE ";" " " ${flag_var} "${${flag_var}}")
+ endif()
+ endforeach ()
+
+ if (MSVC AND ZSTD_USE_STATIC_RUNTIME)
+ foreach (flag_var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+ CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
+ CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+ CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+ if ( ${flag_var} )
+ string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
+ endif()
+ endforeach ()
+ endif ()
+
+endmacro()