我在 MacOS 上从头开始构建了 Clang，但遇到了问题。
使用以下命令来配置 Clang 进行构建：
cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=/opt/clang-12 -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="AArch64;ARM;X86" -DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi;lldb" ../llvm
这是我的测试程序：
#include <ostream>
#include <algorithm>
int main(int argc, char** argv) {
return 0;
}
-
如果使用 XCode 附带的 Clang 11.0.3 进行编译，则可以clang++ -c test.cc
-
如果使用新的 Clang 12（内置），则会出现错误 /opt/clang-12/bin/clang++ -c test.cc
In file included from test.cc:2:
In file included from /opt/clang-12/bin/../include/c++/v1/ostream:138:
In file included from /opt/clang-12/bin/../include/c++/v1/ios:214:
In file included from /opt/clang-12/bin/../include/c++/v1/iosfwd:95:
/opt/clang-12/bin/../include/c++/v1/wchar.h:119:15: fatal error: 'wchar.h' file not found
#include_next <wchar.h>
^~~~~~~~~
1 error generated.
根据我试图包含的内容，我会得到不同的包含错误。
➜ tests /opt/clang-12/bin/clang++ -v -c test.cc
clang version 12.0.0 (https://github.com/llvm/llvm-project.git b529c5270c99e0ca18e3cbd9a5f50eb0970e560a)
Target: x86_64-apple-darwin19.6.0
Thread model: posix
InstalledDir: /opt/clang-12/bin
(in-process)
"/opt/clang-12/bin/clang-12" -cc1 -triple x86_64-apple-macosx10.15.0 -Wundef-prefix=TARGET_OS_ -Werror=undef-prefix -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -emit-obj -mrelax-all --mrelax-relocations -disable-free -disable-llvm-verifier -discard-value-names -main-file-name test.cc -mrelocation-model pic -pic-level 2 -mframe-pointer=all -fno-rounding-math -munwind-tables -fcompatibility-qualified-id-block-type-checking -target-cpu penryn -debugger-tuning=lldb -target-linker-version 556.6 -v -resource-dir /opt/clang-12/lib/clang/12.0.0 -stdlib=libc++ -internal-isystem /opt/clang-12/bin/../include/c++/v1 -internal-isystem /usr/include/c++/v1 -internal-isystem /usr/local/include -internal-isystem /opt/clang-12/lib/clang/12.0.0/include -internal-externc-isystem /usr/include -fdeprecated-macro -fdebug-compilation-dir /Users/duddie/Projects/Audio/1voct/1voct_modular/tests -ferror-limit 19 -stack-protector 1 -fblocks -fencode-extended-block-signature -fregister-global-dtors-with-atexit -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -fmax-type-align=16 -fcolor-diagnostics -o test.o -x c++ test.cc
clang -cc1 version 12.0.0 based upon LLVM 12.0.0git default target x86_64-apple-darwin19.6.0
ignoring nonexistent directory "/usr/include/c++/v1"
ignoring nonexistent directory "/usr/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/clang-12/bin/../include/c++/v1
/usr/local/include
/opt/clang-12/lib/clang/12.0.0/include
/System/Library/Frameworks (framework directory)
/Library/Frameworks (framework directory)
End of search list.
In file included from test.cc:2:
In file included from /opt/clang-12/bin/../include/c++/v1/ostream:138:
In file included from /opt/clang-12/bin/../include/c++/v1/ios:214:
In file included from /opt/clang-12/bin/../include/c++/v1/iosfwd:95:
/opt/clang-12/bin/../include/c++/v1/wchar.h:119:15: fatal error: 'wchar.h' file not found
#include_next <wchar.h>
^~~~~~~~~
1 error generated.
- 如果 Clang 11.0.3 (XCode) 或 Clang 12 但目标为 ARM，则出现错误
clang++ -target arm-none-eabi -c test.cc
test.cc:2:10: fatal error: 'ostream' file not found
#include <ostream>
^~~~~~~~~
1 error generated.
有什么想法我做错了什么吗？
将以下内容添加到 shell 配置文件中~/.bash_profile or ~/.zsh_profile或任何其他方式设置运行它的 shell 可以访问的环境变量。
export SDKROOT="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk"
验证 macOS/Xcode 版本上 SDK 的正确路径。
重新打开终端（获取文件可能无法可靠工作）。
然后再次尝试编译命令。
/opt/clang-12/bin/clang++ -c test.cc
命令行工具包安装 macOS 系统标头
位于 macOS SDK 内。使用已安装的工具编译的软件
将在 Xcode 提供的 macOS SDK 中搜索标头
在：/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk或命令行工具：/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk取决于哪个
使用 xcode-select 选择。命令行工具将搜索
默认情况下用于系统标头的 SDK。但有些软件可能无法
针对 SDK 正确构建并要求 macOS 标头
安装在基本系统的 /usr/include 下。如果你是
此类软件的维护者，我们鼓励您更新您的项目
使用 SDK 或针对以下问题提交错误报告
阻止您这样做。作为解决方法，额外的包是
提供的它将安装标头到基本系统。在一个
以后的版本中，将不再提供此包。你可以找到
该包位于：/Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
https://developer.apple.com/documentation/xcode-release-notes/xcode-10-release-notes https://developer.apple.com/documentation/xcode-release-notes/xcode-10-release-notes
本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系:hwhale#tublm.com(使用前将#替换为@)
