checkinstall'ing 27.0.91 fails

[Jordan Wilson <jordan.t.wilson@gmx.com>]

Hi all,

I'm running Ubuntu 18.04 on x86-64.

I've just tried to get Emacs 27.0.91 on my machine. It builds and runs
as is to be expected, it's just when I try to do `checkinstall' (as I
normally do to install Emacs as a package) it gets someway through the
process and then fails (see the end of this mail).

Build commands:
./configure --without-compress-install
make
sudo checkinstall make install

Thanks,
Jordan.

...
for file in etags ctags emacsclient  ebrowse ; do \
  /usr/bin/install -c  ${file} \
    "/usr/local/bin"/` \
      echo ${file} | sed -e 's/$//' -e 's,x,x,' \
    ` || exit; \
done
make[1]: Leaving directory '/tmp/emacs-27.0.91/lib-src'
/usr/bin/install -c  src/emacs "/usr/local/bin/`echo emacs-27.0.91 | sed 's,x,x,'`"
/usr/bin/install -c -m 644 src/emacs.pdmp "/usr/local/libexec/emacs/27.0.91/x86_64-pc-linux-gnu"/emacs.pdmp
chmod 755 "/usr/local/bin/`echo emacs-27.0.91 | sed 's,x,x,'`"
rm -f "/usr/local/bin/`echo emacs | sed 's,x,x,'`"
cd "/usr/local/bin" && ln -s "`echo emacs-27.0.91 | sed 's,x,x,'`" "`echo emacs | sed 's,x,x,'`"
make -C lib-src maybe-blessmail
make[1]: Entering directory '/tmp/emacs-27.0.91/lib-src'
  GEN      blessmail
emacs: could not resolve realpath of "../src/emacs": Invalid argument
Makefile:251: recipe for target 'blessmail' failed
make[1]: *** [blessmail] Error 1
make[1]: Leaving directory '/tmp/emacs-27.0.91/lib-src'
Makefile:427: recipe for target 'blessmail' failed
make: *** [blessmail] Error 2

****  Installation failed. Aborting package creation.

Restoring overwritten files from backup...OK

Cleaning up...OK

Bye.
...