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

[Hervé Pagès]

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.

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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