在 x86_64 macOS 中使用自制程序安装的 g++@12 指定“-fsanitize=address”时出现“ld：找不到 -lasan 的库”错误

Question

使用

-fsanitize=address

选项运行 g++(gcc@12) 时会发生错误。

$ g++-12 --std=c++20 -g -fsanitize=address ./main.cpp -o a.out
ld: library not found for -lasan
collect2: error: ld returned 1 exit status

环境

• macOS 索诺玛 14.3.1
• CPU x86_64
• g++-12（自制 GCC 12.3.0）12.3.0
• 自制4.2.7
• 命令行工具路径：/Library/Developer/CommandLineTools/SDKs/MacOSX14.2.sdk

我做了什么

我重新安装了 gcc@12，但没有任何改变。

我找不到 gcc@12 的 libasan.dylib。

$ find /usr/local -name "*asan*"
/usr/local/Cellar/llvm/17.0.6_1/lib/clang/17/include/sanitizer/asan_interface.h
/usr/local/Cellar/llvm/17.0.6_1/lib/clang/17/include/sanitizer/hwasan_interface.h
/usr/local/Cellar/llvm/17.0.6_1/lib/clang/17/lib/darwin/libclang_rt.asan_abi_osx.a
/usr/local/Cellar/llvm/17.0.6_1/lib/clang/17/lib/darwin/libclang_rt.asan_osx_dynamic.dylib
/usr/local/Cellar/llvm/17.0.6_1/lib/clang/17/share/asan_ignorelist.txt
/usr/local/Cellar/gcc/13.2.0/lib/gcc/current/gcc/x86_64-apple-darwin23/13/plugin/include/asan.h
/usr/local/Cellar/gcc@12/12.3.0/lib/gcc/12/gcc/x86_64-apple-darwin23/12/plugin/include/asan.h
/usr/local/Cellar/gcc@9/9.5.0/lib/gcc/9/libasan_preinit.o
/usr/local/Cellar/gcc@9/9.5.0/lib/gcc/9/gcc/x86_64-apple-darwin21/9.5.0/include/sanitizer/asan_interface.h
/usr/local/Cellar/gcc@9/9.5.0/lib/gcc/9/gcc/x86_64-apple-darwin21/9.5.0/plugin/include/asan.h
/usr/local/Cellar/gcc@9/9.5.0/lib/gcc/9/libasan.dylib
/usr/local/Cellar/gcc@9/9.5.0/lib/gcc/9/libasan.5.dylib

$ find /Library/Developer/CommandLineTools -name "*asan*"
/Library/Developer/CommandLineTools/usr/lib/clang/13.1.6/include/sanitizer/asan_interface.h
...
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/lib/darwin/libasan.dylib
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/lib/darwin/libclang_rt.asan_ios_dynamic.dylib
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/lib/darwin/libclang_rt.asan_watchossim_dynamic.dylib
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/lib/darwin/libclang_rt.asan_tvossim_dynamic.dylib
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/share/asan_ignorelist.txt
/Library/Developer/CommandLineTools/SDKs/MacOSX14.2.sdk/usr/lib/libSystem_asan.tbd
/Library/Developer/CommandLineTools/SDKs/MacOSX14.2.sdk/usr/lib/libSystem.B_asan.tbd

我检查了 AddressSanitizer 的文档，gcc 似乎支持 x86_64 OS X 中的 AddressSanitizer。

我检查了gcc@12的公式，我想知道args不包含

--enable-libsanitizer

是否可以。

我可以尝试修复该错误吗？

Answer 1

x86_64 macOS 似乎不再支持消毒剂（自 Ventura 以来）。

https://github.com/orgs/Homebrew/discussions/3384#discussioncomment-6264292