This was fixed (independently?) in r-devel today:
Peter-Dalgaards-MacBook-Air:R pd$ svn log m4/R.m4 | head
------------------------------------------------------------------------
r71889 | lawrence | 2017-01-04 04:57:31 +0100 (Wed, 04 Jan 2017) | 4 lines
R_ZLIB macro tests ZLIB_VERNUM to handle zlib 1.2.10 (6 chars)
Thanks to George Hartzell for the fix.
---
-pd
> On 04 Jan 2017, at 17:09 , bastl73 <bast...@freenet.de> wrote:
>
> Configuring R with zlib-1.2.10 I get this error:
>
> checking for zlib.h... yes
> checking if zlib version >= 1.2.5... no
> checking whether zlib support suffices... configure: error: zlib library and
> headers
> are required
>
> So I asked Mark from zlib about this problem and he wrote back:
>
>> exit(strncmp(ZLIB_VERSION, "1.2.5", 5) < 0);
>
> strcmp("1.2.10", "1.2.5") will indicate incorrectly that the 1.2.10 is *less*
> than
> 1.2.5. This is why there is ZLIB_VERNUM, which is a number that can be
> compared. So
> it should be simply:
>
> exit(ZLIB_VERNUM < 0x1250);
>
>
> bastl
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd....@cbs.dk Priv: pda...@gmail.com
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