grep rebuild?

[Brian Inglis]

On 2023-03-16 10:50, Brian Inglis via Cygwin-apps wrote:
> On 2023-03-16 06:08, Corinna Vinschen via Cygwin-apps wrote:
>> Hi Brian,
>>
>> there's a problem with the grep package.  It uses the internally
>> provided GNULIB regex library.
>>
>> Unfortunately, that's the default if the system doesn't provide a more
>> recent GLibc.  Which we'll never do.  The problem is this: Native
>> language support in GNULIB's regex is *only* available, if it's built as
>> part of GLibc.
>>
>> I'd like to ask you to rebuild grep 3.9 with the
>> --without-included-regex option.
>>
>> That will allow grep to use Cygwin's own regex, which already comes with
>> basic native language support, and which I'm working on to sbetter
>> support equivalence class and collation symbol expressions.
> 
> Hi Corinna,
> 
> We discussed this and I was going to release grep 3.8 test release 3, for 
> testing with snapshots or when Cygwin 3.5.0 is released, then grep 3.9 came out, 
> and I realized grep is updated every few months, so that went on the back 
> burner. I can do a test release for 3.9-2 with that configuration change.
> 
> The current release passes all the class tests and works for me and Andrey.
> Are there any other implications of language support affecting grep?

Config option --without-included-regex no longer seems to build with grep 3.9 on 
Cygwin - may require glibc regex - or may now autoconfig depending on [g]libc?

/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
dfasearch.o: in function `regex_compile':
/usr/src/debug/grep-3.9-2/src/dfasearch.c:159: undefined reference to 
`re_set_syntax'
/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
/usr/src/debug/grep-3.9-2/src/dfasearch.c:163: undefined reference to 
`re_compile_pattern'
/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
/usr/src/debug/grep-3.9-2/src/dfasearch.c:161: undefined reference to 
`re_set_syntax'
/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
/usr/src/debug/grep-3.9-2/src/dfasearch.c:163: undefined reference to 
`re_compile_pattern'
/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
dfasearch.o: in function `EGexecute':
/usr/src/debug/grep-3.9-2/src/dfasearch.c:555: undefined reference to `re_search'
/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
/usr/src/debug/grep-3.9-2/src/dfasearch.c:502: undefined reference to `re_search'
/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: 
/usr/src/debug/grep-3.9-2/src/dfasearch.c:540: undefined reference to `re_match'
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:1834: grep.exe] Error 1

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry