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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS_INIT}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_INIT}")
# workaround when old NDK toolchain that does not set CMAKE_ANDROID_NDK_VERSION is used
# See for details: https://gitlab.kitware.com/cmake/cmake/-/issues/24386
if(ANDROID_NDK_REVISION AND NOT CMAKE_ANDROID_NDK_VERSION)
set(CMAKE_ANDROID_NDK_VERSION "${ANDROID_NDK_REVISION}")
endif()
if (MSVC)
set(flagPrefixSymbol "/")
include(global_flags.compiler.msvc)
include(global_flags.linker.msvc)
else()
set(flagPrefixSymbol "-")
include(global_flags.compiler.gnu)
include(global_flags.linker.gnu)
endif()
if (CMAKE_SYSTEM_PROCESSOR MATCHES "^(i686|x86_64|AMD64)$")
set(_ALL_X86_EXTENSIONS_DEFINES "\
${flagPrefixSymbol}DSSE_ENABLED=1 \
${flagPrefixSymbol}DSSE3_ENABLED=1 \
${flagPrefixSymbol}DSSSE3_ENABLED=1 \
")
if ((CMAKE_SYSTEM_PROCESSOR MATCHES "^(x86_64|AMD64)$") OR (NOT ANDROID))
string(APPEND _ALL_X86_EXTENSIONS_DEFINES "\
${flagPrefixSymbol}DSSE41_ENABLED=1 \
${flagPrefixSymbol}DSSE42_ENABLED=1 \
${flagPrefixSymbol}DPOPCNT_ENABLED=1 \
")
if (NOT ANDROID)
# older clang versions did not support this feature on Android:
# https://reviews.llvm.org/rGc32d307a49f5255602e7543e64e6c38a7f536abc
string(APPEND _ALL_X86_EXTENSIONS_DEFINES " ${flagPrefixSymbol}DCX16_ENABLED=1")
endif()
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_ALL_X86_EXTENSIONS_DEFINES}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_ALL_X86_EXTENSIONS_DEFINES}")
endif()
message(VERBOSE "CMAKE_C_FLAGS = \"${CMAKE_C_FLAGS}\"")
message(VERBOSE "CMAKE_CXX_FLAGS = \"${CMAKE_CXX_FLAGS}\"")
if (NOT CMAKE_CROSSCOMPILING)
set(TOOLS_ROOT ${PROJECT_BINARY_DIR})
elseif(NOT TOOLS_ROOT)
message(FATAL_ERROR "TOOLS_ROOT is required for crosscompilation")
endif()
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