> On Jan 4, 2017, at 8:09 AM, bastl73 <bast...@freenet.de> wrote:
>
> Configuring R
Which "R" would that be?
> 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);
I'm thinking this must be the world's shortest attempt at a bug report. I can
find that code in a couple of places with a Google search:
A copy of material labelled as "part of R"
https://github.com/rho-devel/rho/blob/master/m4/R.m4
A diff file submitted by Ingo Feinerer to bsdports:
https://marc.info/?l=openbsd-ports&m=146229312201237&w=2
And using the Google advanced search function (since Google does not apparently
index the R source):
https://svn.r-project.org/R/trunk/m4/R.m4
It appears the current version already has the code suggested as the correction:
https://svn.r-project.org/R/trunk/m4/R.m4
A bit below the section header :
## R_ZLIB
We see this code (which appears to be exactly the suggested edit by your
correspondent.)
int main() {
#ifdef ZLIB_VERNUM
if (ZLIB_VERNUM < 0x1250) {
exit(1);
}
exit(0);
So you should check that you are working with the most recent version of R. If
you are, and you still think this is a bug, then you should post a much, much
more complete "trial bug report" to the r-de...@r-project.org mailing list. It
should include a complete description of what you are attempting and full log
files. Posting bug reports to r-help is just the wrong place and posting
incorrect bug reports to bugzilla just annoys the maintainers.
>
> bastl
>
--
David Winsemius
Alameda, CA, USA
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