https://bugs.llvm.org/show_bug.cgi?id=49713
Bug ID: 49713
Summary: Figure out how to do library lookup on Big Sur
Product: lld
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: MachO
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
As per
https://developer.apple.com/documentation/macos-release-notes/macos-big-sur-11_0_1-release-notes:
> New in macOS Big Sur 11.0.1, the system ships with a built-in dynamic linker
> cache of all system-provided libraries. As part of this change, copies of
> dynamic libraries are no longer present on the filesystem. Code that attempts
> to check for dynamic library presence by looking for a file at a path or
> enumerating a directory will fail. Instead, check for library presence by
> attempting to dlopen() the path, which will correctly check for the library
> in the cache. (62986286)
There's some prior work in
https://mjtsai.com/blog/2020/06/26/reverse-engineering-macos-11-0/ which may be
helpful (c.f. dyld_shared_cache_util)
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