Yes, I did, if you used R 3.6.0 there would be no issue (as long as you have 
command line tools installed).

Cheers,
Simon


> On Apr 24, 2019, at 12:06, Roy Mendelssohn - NOAA Federal via R-SIG-Mac 
> <r-sig-mac@r-project.org> wrote:
> 
> Yes that is where I found the command.  I would add though that I had done 
> that for Xcode 10.2.0, and appears that when you install the new versions 
> that the installer actually deletes the headers at that location.  At least 
> that is what happened to me when I updated to Xcode 10.2.1.  So people should 
> be aware of this.  Each update may delete the headers.
> 
> In the previous thread,  Simon was looking into possibly changing where the R 
> tools look for the headers, but that sort of thing is beyond my pay grade.  
> 
> -Roy
> 
>> On Apr 24, 2019, at 9:01 AM, Tierney, Luke <luke-tier...@uiowa.edu> wrote:
>> 
>> Also documented in the 'R Installation and Administration' manual --
>> always a good place to look.
>> 
>> Best,
>> 
>> luke
>> 
>> On Wed, 24 Apr 2019, Kasper Daniel Hansen wrote:
>> 
>>> Doh! Sorry to have missed that email thread.
>>> 
>>> This advice solved the issue for me.
>>> 
>>> On Wed, Apr 24, 2019 at 11:41 AM Roy Mendelssohn - NOAA Federal <
>>> roy.mendelss...@noaa.gov> wrote:
>>> 
>>>> Hi Kaspar:
>>>> 
>>>> There is an issue of where Xcode puts headers.  I have posted on this
>>>> previously.  I did the same update as you,  and not only doesn't Xcode put
>>>> the headers where R expects,  it appears to delete the existing headers.
>>>> 
>>>> Anyhow,  try running the following and see if your problems go away:
>>>> 
>>>>> sudo installer -pkg \
>>>>> 
>>>> /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
>>>> \
>>>>> -target /
>>>> 
>>>> -Roy
>>>> 
>>>>> On Apr 24, 2019, at 8:36 AM, Kasper Daniel Hansen <
>>>> kasperdanielhan...@gmail.com> wrote:
>>>>> 
>>>>> I am on Mojave. I recently updated to Xcode 10.2.1 and I did the
>>>> associated
>>>>> update of the command line tools. Following this, I reinstalled clang6
>>>> and
>>>>> gfortran 6 from CRAN.
>>>>> 
>>>>> When I use the clang6 compiler from CRAN, it is unable to find stdio.h.
>>>>> 
>>>>> When I compare the include path from clang6 to the Apple suppled clang
>>>> with
>>>>> `$CC -E - -v` I get
>>>>> 
>>>>> with Apple clang
>>>>> #include <...> search starts here:
>>>>> /usr/local/include
>>>>> 
>>>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/10.0.1/include
>>>>> 
>>>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
>>>>> 
>>>> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include
>>>>> 
>>>> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/System/Library/Frameworks
>>>>> (framework directory)
>>>>> End of search list.
>>>>> 
>>>>> with clang6 from CRAN
>>>>> #include <...> search starts here:
>>>>> /usr/local/include
>>>>> /usr/local/clang6/lib/clang/6.0.0/include
>>>>> /System/Library/Frameworks (framework directory)
>>>>> /Library/Frameworks (framework directory)
>>>>> End of search list.
>>>>> 
>>>>> Did Apple move the headers around? Or have I somehow hosed my system?
>>>>> 
>>>>> Best,
>>>>> Kasper
>>>>> 
>>>>>     [[alternative HTML version deleted]]
>>>>> 
>>>>> _______________________________________________
>>>>> R-SIG-Mac mailing list
>>>>> R-SIG-Mac@r-project.org
>>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>>>> 
>>>> **********************
>>>> "The contents of this message do not reflect any position of the U.S.
>>>> Government or NOAA."
>>>> **********************
>>>> Roy Mendelssohn
>>>> Supervisory Operations Research Analyst
>>>> NOAA/NMFS
>>>> Environmental Research Division
>>>> Southwest Fisheries Science Center
>>>> ***Note new street address***
>>>> 110 McAllister Way
>>>> Santa Cruz, CA 95060
>>>> Phone: (831)-420-3666
>>>> Fax: (831) 420-3980
>>>> e-mail: roy.mendelss...@noaa.gov www: http://www.pfeg.noaa.gov/
>>>> 
>>>> "Old age and treachery will overcome youth and skill."
>>>> "From those who have been given much, much will be expected"
>>>> "the arc of the moral universe is long, but it bends toward justice" -MLK
>>>> Jr.
>>>> 
>>>> 
>>> 
>>>     [[alternative HTML version deleted]]
>>> 
>>> _______________________________________________
>>> R-SIG-Mac mailing list
>>> R-SIG-Mac@r-project.org
>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>>> 
>> 
>> -- 
>> Luke Tierney
>> Ralph E. Wareham Professor of Mathematical Sciences
>> University of Iowa                  Phone:             319-335-3386
>> Department of Statistics and        Fax:               319-335-3017
>>   Actuarial Science
>> 241 Schaeffer Hall                  email:   luke-tier...@uiowa.edu
>> Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu
> 
> **********************
> "The contents of this message do not reflect any position of the U.S. 
> Government or NOAA."
> **********************
> Roy Mendelssohn
> Supervisory Operations Research Analyst
> NOAA/NMFS
> Environmental Research Division
> Southwest Fisheries Science Center
> ***Note new street address***
> 110 McAllister Way
> Santa Cruz, CA 95060
> Phone: (831)-420-3666
> Fax: (831) 420-3980
> e-mail: roy.mendelss...@noaa.gov www: http://www.pfeg.noaa.gov/
> 
> "Old age and treachery will overcome youth and skill."
> "From those who have been given much, much will be expected" 
> "the arc of the moral universe is long, but it bends toward justice" -MLK Jr.
> 
> _______________________________________________
> R-SIG-Mac mailing list
> R-SIG-Mac@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-mac

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