[Bug 1933827] Re: Symlink incorrectly installs to a sub-directory related to source name (github: 80)

[Mathew Hodson]

** Changed in: zmk (Ubuntu)
   Importance: Undecided => Low

** Changed in: zmk (Ubuntu Hirsute)
   Importance: Undecided => Low

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Title:
  Symlink incorrectly installs to a sub-directory related to source name
  (github: 80)

Status in zmk package in Ubuntu:
  Fix Released
Status in zmk source package in Hirsute:
  In Progress

Bug description:
  This bug is a mirror of the GitHub issue
  https://github.com/zyga/zmk/issues/80 filed for the purpose of SRU

  The following makefile snippet illustrates the problem:

  # Symlink: sysota-rauc-hook -> sysotad
  cmd/sysotad/sysota-rauc-hook.InstallDir = $(cmd/sysotad/sysotad.InstallDir)
  cmd/sysotad/sysota-rauc-hook.SymlinkTarget = sysotad
  $(eval $(call ZMK.Expand,Symlink,cmd/sysotad/sysota-rauc-hook))

  The result of make install should be

  ln -s sysotad /usr/lib/sysotad/sysotad-rauc-hook

  With zmk << 0.5.1 it is

  ln -s sysotad /usr/lib/sysotad/cmd/sysotad/sysotad-rauc-hook

  This bug was fixed in zmk 0.5.1, which is available in Debian Unstable
  and Ubuntu Impish as 0.5.1-2

  [Impact]

  The issue is isolated to the ZMK Symlink template and is only visible
  when the path of the symbolic link, in the development tree, contains
  a sub-directory, like in the RAUC hook example above.

  [Test Case]
  Create a makefile with this content:

  include z.mk
  $(eval $(call ZMK.Import,Directories))
  subdir/symlink.InstallDir = $(bindir)
  subdir/symlink.SymlinkTarget = target
  $(eval $(call ZMK.Expand,Symlink,subdir/symlink))

  Issue the command: make -n install. The correct output is:

  ln -sf target /usr/local/bin/symlink

  In the broken case, the output is:

  ln -sf target /usr/local/bin/subdir/symlink

  [Where problems could occur]
  Since zmk is only used by my own software, most notably libzt, and libzt does not trigger this error, the regression potential is minimal.

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