mac arm64交叉编译 x84_64

toolchain_x86_64.cmake

set(CMAKE_SYSTEM_NAME Darwin)  # 设置操作系统为 Monterey（macOS）
set(CMAKE_SYSTEM_PROCESSOR x86_64)  # 设置目标处理器架构为 x86_64
set(CMAKE_OSX_ARCHITECTURES x86_64)
set(CMAKE_CROSSCOMPILING  true)

# 设置交叉编译工具链路径
set(CMAKE_C_COMPILER /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang)
set(CMAKE_CXX_COMPILER /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++)

if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
    add_compile_options(-arch x86_64)
else()
    add_compile_options(-arch arm64)
endif()

执行cmake时生

cmake -DCMAKE_TOOLCHAIN_FILE=toolchain_x86_x64   path_to_source && cmake --build .

然后查看二进制arch

lipo -info path_to_binary