Re: readline does not compile anymore on HP-UX since d5f26b1287916c1790323965d46f5e0acad89155

[Chet Ramey]

On 8/17/21 6:36 AM, Osipov, Michael (LDA IT PLM) wrote:
> Folks,
> 
>> +if test -n "$want_auto_cflags" ; then
>> +    AUTO_CFLAGS="-g ${GCC+-O2}"
>> +    STYLE_CFLAGS="${GCC+-Wno-parentheses} ${GCC+-Wno-format-security}"
>> +fi
> 
> This hunks seems not to be POSIX shell compliant.

It's absolutely POSIX shell compliant.

> Both vars are set for me
> on HP-UX because the expansion is incomplete.

The expansion is not incomplete. The gcc-specific options will be set if
the GCC variable has a value.

 According to [1] it has to be
> $(GCC:+..} and not $(GCC+..}.

POSIX does not say that. What it says is:

"In the parameter expansions shown previously, use of the <colon> in the
format shall result in a test for a parameter that is unset or null;
omission of the <colon> shall result in a test for a parameter that is only
unset. "


> I have changed ./configure locally and it
> works with /bin/sh.

It sounds like you've found a bug in the HP-UX sh.

> I assume that this should also work on any other POSIX compliant shell.

It doesn't mean the same thing. Maybe you should try adding a space between
the `+' and `-' to get around the sh bug.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/