[Rd] configure --with-pcre1 fails with latest R 4.0 on Ubuntu 14.04

[Hervé Pagès]

Excellent. Thank you!   H.

On 3/20/20 23:55, Tomas Kalibera wrote:
> On 3/18/20 6:11 PM, Hervé Pagès wrote:
>> Thanks Tomas. Any chance the old version of the error message could be 
>> restored? It would definitely be more helpful than the current one. 
>> It's confusing to get an error and be told to use --with-pcre1 when 
>> you're already using it.
> 
> The message now gives the required version and UTF-8 support 
> requirement, so one does not have to look that one line up.
> Thanks to Brian Ripley,
> 
> Tomas
> 
>>
>>
>> H.
>>
>> On 3/18/20 01:08, Tomas Kalibera wrote:
>>> On 3/17/20 8:18 PM, Hervé Pagès wrote:
>>>> Using --with-pcre1 to configure the latest R 4.0 (revision 77988) on 
>>>> an Ubuntu 14.04.5 LTS system gives me the following error:
>>>>
>>>> ...
>>>> checking if lzma version >= 5.0.3... yes
>>>> checking for pcre2-config... no
>>>> checking for pcre_fullinfo in -lpcre... yes
>>>> checking pcre.h usability... yes
>>>> checking pcre.h presence... yes
>>>> checking for pcre.h... yes
>>>> checking pcre/pcre.h usability... no
>>>> checking pcre/pcre.h presence... no
>>>> checking for pcre/pcre.h... no
>>>> checking if PCRE1 version >= 8.32 and has UTF-8 support... no
>>>> checking whether PCRE support suffices... configure: error: pcre2 
>>>> library and headers are required, or use --with-pcre1
>>>>
>>>> Maybe the real problem is that the PCRE version on this OS is 8.31?
>>>
>>> Yes, R requires PCRE version at least 8.32 as documented in R-Admin, 
>>> and this is since September 2019.
>>>
>>>> The error message is not particularly helpful.
>>>
>>> An earlier version of the message gave the requirement explicitly, 
>>> when people would have been more likely to have that old versions of 
>>> PCRE1.
>>> The few who still have it now need to see also the output line above 
>>> to get the requirement and/or look into the manual.
>>>
>>> R 4.0 is still keeping support for PCRE1 (>=8.32), but PCRE2 should 
>>> be used whenever possible.
>>>
>>> Best,
>>> Tomas
>>>
>>>>
>>>> Thanks,
>>>> H.
>>>>
>>>
>>
> 

-- 
Hervé Pagès

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