[R-SIG-Mac] library not found for -lX11

[Prof Brian Ripley]

But those paths should not be used unconditionally (as you have).  They 
are not right for most x86_64 Linux, Solaris, ... and they might not 
even be right on Mac OS X (depending on the X installation).

And PKG_CPPFLAGS was correct: that means flags for cpp, the C 
pre-processor, not for C++ (which is macro PKG_CXXFLAGS).  See 'Writing 
R Extensions'.

On 29/11/2012 12:39, Jakson Alves de Aquino wrote:
> On Thu, Nov 29, 2012 at 8:43 AM, jochen laubrock
> <jochen.laubrock at gmail.com> wrote:
>> Works for me after additionally setting PKG_CPPFLAGS to point to the headers in Makevars
>>
>> PKG_LIBS=-L/usr/X11/lib -lX11
>> PKG_CPPFLAGS=-I/usr/X11/include
>>
>>
>> On Nov 29, 2012, at 12:18 , Jakson Alves de Aquino <jalvesaq at gmail.com> wrote:
>>
>>> On Wed, Nov 28, 2012 at 9:38 PM, Jakson Alves de Aquino
>>> <jalvesaq at gmail.com> wrote:
>>>> I submitted a package to CRAN:
>>>> http://cran.r-project.org/web/packages/vimcom/index.html
>>>>
>>>> It builds on Linux without warnings, but there is the following error
>>>> on Mac OS X:
>>>>
>>>>     ld: library not found for -lX11
>>>>     collect2: ld returned 1 exit status
>>>>     make: *** [vimcom.so] Error 1
>>>>     ERROR: compilation failed for package 'vimcom'
>>>>
>>>> The complete log is here:
>>>> http://www.r-project.org/nosvn/R.check/r-release-macosx-ix86/vimcom-00install.html
>>>>
>>>> I know that I have to edit the src/Makevars file, but I don't know
>>>> what I should put there and I don't have access to any machine running
>>>> Mac OS X to make tests. Any help will be appreciated.
>>>
>>> I've found this:
>>> http://stackoverflow.com/questions/5841008/problem-in-linking-x11-in-mac-os-x
>>>
>>> So, it seems that a Makevars file with the following content would
>>> solve the problem:
>>>
>>> PKG_LIBS=-L/usr/X11/lib -lX11
>>>
>>> I would be grateful if someone could try to build the package with the
>>> above change in the src/Makevars since, as I have said, I can't make
>>> tests.
>
> I added PKG_CFLAGS because the code is in C.
>
> I'm grateful to Jochen Laubrock for finding the solution and for
> Federico Calboli for doing additional tests. The updated code is
> available at:
>
> https://github.com/jalvesaq/VimCom
>
> Best regards,
>


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
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