[Bug 235330] install: relative symlink bug

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235330

            Bug ID: 235330
           Summary: install: relative symlink bug
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: mat at FreeBSD.org
             Flags: mfc-stable11?, mfc-stable12?

$ mkdir /tmp/lib/ /tmp/libexec
$ touch /tmp/lib/foo.so
$ install -lrs /tmp/lib/foo.so /tmp/libexec/
$ ls -l /tmp/libexec
total 1
lrwxr-xr-x  1 mat  wheel  9 30 janv. 20:34 foo.so -> ../foo.so


This only happens with absolute paths, and only, from what I undestand with a
bit of testing, if the first path matches the second.  As in "/tmp/lib" is
present in "/tmp/libexec", so, hey, they must be the same, so stop here, but
"/tmp/libexec" is not in "/tmp/lib" so add a "../"

install -lrs is used quite a lot in the ports tree, and this bug broke at least
a port.

Also, an EN would be nice once this is fixed and merged to the different stable
branches.

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