bug#47000: git libtool compiler flag handling busted on HP-UX

[Pavel Raiskup]

Version: 2.4.6.47-fc77

On Monday, October 25, 2021 10:45:05 PM CET Nick Bowler wrote:
> Hi Pavel,
> 
> On 2021-10-24, Pavel Raiskup <praiskup@redhat.com> wrote:
> > On Monday, March 8, 2021 5:13:23 AM CEST Nick Bowler wrote:
> >> On HP-UX 11.11, with libtool 2.4.6,
> [...]
> >> On investigation, it appears this problem occurs because the func_quote
> >> function in libtool attempts to split on backslashes by setting IFS='\'
> >> but this procedure appears ineffective on the HP-UX shell.  For example:
> >>
> >> % IFS='\'
> >> % hello='foo\bar\baz'
> >> % printf '%s\n' "$hello" $hello
> >> foo\bar\baz
> >> foo\bar\baz
> >
> > Thank you for the report!  And sorry for the delay.
> >
> > Would you mind testing 'make check' from this PR on the affected system?
> >
> >     https://github.com/gnulib-modules/bootstrap/pull/25
> 
> As the Makefile uses the GNU-specific $(shell ...) construction,
> "make check" does not work out of the box on HP-UX.  I worked around
> the problem by running
> 
>   % make abs_aux_dir=$PWD/build-aux abs_srcdir=$PWD/tests check
> 
> > I hope I fixed there the problem with IFS='\' (even though it is just a poor
> > fallback to the slower SED variant, anyone is welcome to provide better
> > solution).
> >
> > Perhaps there are other problems so it would be nice to see the testsuite
> > results.
> 
> The output (attached, gzipped) is not entirely obvious to me but I
> assume this means everything passed?  As a point of comparison, without
> your changes there are many errors reported.
> 
> For the record, the empty field bug described in the change log (which
> is observed with heirloom-sh and presumably also Solaris 10 /bin/sh)
> regarding empty fields does not appear to be a problem on HP-UX 11:

I tried to update the commit message(s) a but.  And I believe this is fixed now
(merged to libtool):
https://git.savannah.gnu.org/cgit/libtool.git/commit/?id=fc7779d7d8edfec83ce74c39f197ae2f1225873a

Thank you for testing!
Pavel

>   % var='a::b'; IFS=':'; set dummy $var
>   % printf '%s\n' "$#" "$2" "$3" "$4"
>   4
>   a
> 
>   b
> 
> Thanks,
>   Nick