Question

当我尝试执行pip install dulwich时，我以一堵红色的墙壁抱怨clang。这是最后一点：

    Please check your Xcode installation
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -I/usr/local/include -I/usr/local/opt/openssl/include -I/usr/local/opt/openssl/include -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/Users/alaird/Developer/py3venv/include -I/usr/local/Cellar/python/3.7.4_1/Frameworks/Python.framework/Versions/3.7/include/python3.7m -c dulwich/_objects.c -o build/temp.macosx-10.14-x86_64-3.7/dulwich/_objects.o
    clang: warning: no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk' [-Wmissing-sysroot]
    In file included from dulwich/_objects.c:20:
    /usr/local/Cellar/python/3.7.4_1/Frameworks/Python.framework/Versions/3.7/include/python3.7m/Python.h:25:10: fatal error: 'stdio.h' file not found
    #include <stdio.h>
             ^~~~~~~~~
    1 error generated.
    error: command 'clang' failed with exit status 1
    ----------------------------------------
ERROR: Command "/Users/alaird/Developer/py3venv/bin/python -u -c 'import setuptools, tokenize;__file__='"'"'/private/var/folders/63/r_rf7mhj14b4c42mfkkl06t8rg1b1r/T/pip-install-b9wlh7xh/dulwich/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/63/r_rf7mhj14b4c42mfkkl06t8rg1b1r/T/pip-record-_v0dq_sp/install-record.txt --single-version-externally-managed --compile --install-headers /Users/alaird/Developer/py3venv/include/site/python3.7/dulwich" failed with error code 1 in /private/var/folders/63/r_rf7mhj14b4c42mfkkl06t8rg1b1r/T/pip-install-b9wlh7xh/dulwich/

我在Google上遇到了很多“ clang失败，退出状态为1”的兔子洞，问题是它太笼统了。要回答几个问题：

是的，Xcode是最新版本，并且已经安装了命令行工具（我在OS X 10.14.6上，因此现在可以通过应用程序更新进行管理）。
这是以前可以运行的安装。我做了make clean后就开始发生此错误，这使我的venv消失了。
尝试安装最新的setuptools会遇到相同的错误，因此感觉指向Xcode / my构建环境（而不是dulwich的错误）是正确的罪魁祸首。
做brew update也给了我同样的clang巴弗。我认为当我升级到莫哈韦沙漠时，有些事情发生了。

想法？

Answer 1

啊哈！

我开始查看警告而不是错误：

no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk' [-Wmissing-sysroot]

这使我注意到SDK版本号是经过硬编码的……这似乎很愚蠢。所以我建立了一个符号链接：

ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk

根据您的系统配置，您可能需要构建一个不同的符号链接（还有一个MacOSX10.15.sdk文件夹）。

然后它起作用了！ pip没问题（包括安装dulwich和pycrypto），brew没问题，一切都对我的开发环境还好！

我也做了：

export CFLAGS="-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"

但是，我不认为这是这样做的，因为在开始新的会话后，所有操作仍然有效。因此，可能是上面的符号链接解决了它。希望这对其他人有帮助！

安装`dulwich`会产生`错误：命令'clang'失败，退出状态为1`

1 个答案: