No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=arm64, VALID_ARCHS=armv7 armv7s).错误
参考地址：http://stackoverflow.com/questions/12889065/no-architectures-to-compile-for-only-active-arch-yes-active-arch-x86-64-valid
No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=arm64, VALID_ARCHS=armv7 armv7s).错误
参考地址：http://stackoverflow.com/questions/12889065/no-architectures-to-compile-for-only-active-arch-yes-active-arch-x86-64-valid
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