克++與iOS SYSROOT和xcode的8.1通過使用<code>sysroot</code>

在Xcode 8.0我可以交叉編譯爲iOS：克++與iOS SYSROOT和xcode的8.1通過使用<code>sysroot</code>

/Applications/Xcode.app/Contents/Developer/usr/bin/g++ \ 
    --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.0.sdk \ 
    -miphoneos-version-min=10.0 -arch armv7s -stdlib=libc++ -std=gnu++11 \ 
    helloworld.cpp

然而，在Xcode 8.1此落下：

/Applications/Xcode.app/Contents/Developer/usr/bin/g++ \ 
    --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.1.sdk \ 
    -miphoneos-version-min=10.1 -arch armv7s -stdlib=libc++ -std=gnu++11 \ 
    helloworld.cpp 
clang: warning: using sysroot for 'MacOSX' but targeting 'iPhone' 
In file included from helloworld.cpp:1: 
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/iostream:38: 
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/ios:215: 
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/iosfwd:90: 
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/wchar.h:70: 
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/_types.h:27: 
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/sys/_types.h:32: 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/sys/cdefs.h:761:2: error: Unsupported architecture 
#error Unsupported architecture

的警告using sysroot for 'MacOSX' but targeting 'iPhone'似乎表明sysroot參數被忽略（並在錯誤中清楚表明其使用MacOSX10.12.sdk）。

這些論據是否改變了？我如何正確指定sysroot？

來源

2016-12-07 paleozogt

我已經在蘋果開發者論壇上發佈了這個帖子：https：//forums.developer.apple.com/thread/69102 – paleozogt

由於Apple的gcc/g ++只是在clang/clang ++之上的墊片，我們可以直接使用clang嗎？

事實證明，工作原理：

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ \ 
    --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.1.sdk \ 
    -miphoneos-version-min=10.1 -arch armv7s -stdlib=libc++ -std=gnu++11 \ 
    helloworld.cpp

蘋果的GCC/G ++似乎破獲了改變SYSROOT。不過，我們似乎可以使用gcc風格的參數--sysroot。方便！

奇怪的是，如果我嘗試使用前綴的叮噹聲，我必須使用-isysroot：

clang++ \ 
    -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.1.sdk \ 
    -miphoneos-version-min=10.1 -arch armv7s -stdlib=libc++ -std=gnu++11 \ 
    helloworld.cpp

來源

2016-12-21 00:37:48 paleozogt

使用-isysroot與新的Xcode，而不是--sysroot，並用空格代替等號。

來源

2017-07-26 17:45:18

克++與iOS SYSROOT和xcode的8.1通過使用<code>sysroot</code>

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