[question]how can i rebuild the libclang_rt.asan-*.so library found in the NDK?

[dentiscalprum]

https://android.googlesource.com/toolchain/llvm_android/+/master/README.md
I used method in this website and find in out/install

❯ find ./ -name "*asan*"
.//darwin-x86/clang-dev/lib64/clang/12.0.1/include/sanitizer/asan_interface.h
.//darwin-x86/clang-dev/lib64/clang/12.0.1/include/sanitizer/hwasan_interface.h
.//darwin-x86/clang-dev/lib64/clang/12.0.1/lib/darwin/libclang_rt.asan_iossim_dynamic.dylib
.//darwin-x86/clang-dev/lib64/clang/12.0.1/lib/darwin/libclang_rt.asan_osx_dynamic.dylib
.//darwin-x86/clang-dev/lib64/clang/12.0.1/lib/darwin/libclang_rt.asan_ios_dynamic.dylib
.//darwin-x86/clang-dev/lib64/clang/12.0.1/share/asan_blacklist.txt

I did't find  libclang_rt.asan-*.so, did i fail to build?
(I want to modify some function in addressSanitizer)
thx!!!

If i build successfully, what should i do to use these function which i modify?
for example, move some file to ndk?

[DanAlbert]

Can't be built from a Mac. Need to use Linux.

[dentiscalprum]

Can't be built from a Mac. Need to use Linux.

thx

[dentiscalprum]

Can't be built from a Mac. Need to use Linux.

I build toolchain in linux, and i encountered this problem, how should i do?

config.status: creating Examples/test-suite/errors/Makefile
config.status: creating Examples/test-suite/csharp/Makefile
config.status: creating Examples/test-suite/d/Makefile
config.status: creating Examples/test-suite/guile/Makefile
config.status: creating Examples/test-suite/java/Makefile
config.status: creating Examples/test-suite/javascript/Makefile
config.status: creating Examples/test-suite/mzscheme/Makefile
config.status: creating Examples/test-suite/ocaml/Makefile
config.status: creating Examples/test-suite/octave/Makefile
config.status: creating Examples/test-suite/perl5/Makefile
config.status: creating Examples/test-suite/php/Makefile
config.status: creating Examples/test-suite/python/Makefile
config.status: creating Examples/test-suite/ruby/Makefile
config.status: creating Examples/test-suite/scilab/Makefile
config.status: creating Examples/test-suite/tcl/Makefile
config.status: creating Examples/test-suite/lua/Makefile
config.status: creating Examples/test-suite/r/Makefile
config.status: creating Examples/test-suite/go/Makefile
config.status: creating Source/Makefile
config.status: creating Tools/javascript/Makefile
config.status: creating preinst-swig
config.status: creating CCache/ccache_swig_config.h
config.status: creating Source/Include/swigconfig.h
config.status: executing depfiles commands
config.status: error: in `/root/opt/llvm-toolchain/out/lib/swig-linux':
config.status: error: Something went wrong bootstrapping makefile fragments
    for automatic dependency tracking.  Try re-running configure with the
    '--disable-dependency-tracking' option to at least be able to build
    the package (albeit without support for automatic dependency tracking).
See `config.log' for more details
Traceback (most recent call last):
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/do_build.py", line 710, in <module>
    main()
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/do_build.py", line 633, in main
    swig_builder.build()
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/builder_registry.py", line 67, in wrapper
    function(builder, *args, **kwargs)
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/base_builders.py", line 89, in build
    self._build_config()
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/base_builders.py", line 214, in _build_config
    utils.check_call(config_cmd, cwd=self.output_dir, env=env)
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/utils.py", line 52, in check_call
    return subprocess_run(cmd, *args, **kwargs, check=True)
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/utils.py", line 42, in subprocess_run
    return subprocess.run(cmd, *args, **kwargs, text=True)
  File "/root/opt/llvm-toolchain/prebuilts/python/linux-x86/lib/python3.8/subprocess.py", line 512, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '[PosixPath('/root/opt/llvm-toolchain/external/swig/configure'), '--prefix=/root/opt/llvm-toolchain/out/lib/swig-linux-install', '--without-pcre']' returned non-zero exit status 1.
Traceback (most recent call last):
  File "toolchain/llvm_android/build.py", line 21, in <module>
    py3_utils.run_with_py3('do_build.py')
  File "/root/opt/llvm-toolchain/toolchain/llvm_android/py3_utils.py", line 36, in run_with_py3
    [python_bin, os.path.join(THIS_DIR, script_name)] + sys.argv[1:])
  File "/usr/lib/python2.7/subprocess.py", line 190, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/root/opt/llvm-toolchain/prebuilts/python/linux-x86/bin/python3', '/root/opt/llvm-toolchain/toolchain/llvm_android/do_build.py', '--no-build', 'windows']' returned non-zero exit status 1

[DanAlbert]

Not sure. Never seen that (I very rarely ever run that script). @stephenhines or @pirama-arumuga-nainar might be able to help.

[hhb]

Something went wrong when building swig (one dependency for lldb). Since you don't really need lldb, you can add --no-build=lldb to command line to skip it.