[R-pkg-devel] Alternative to ifeq for Makevars

[Duncan Murdoch]

On 2024-11-08 4:55 p.m., Josiah Parry wrote:
> Thanks, Ivan! I've been able to get quite far based on the code in
> data.table*
> which uses sed to generate the Makevars from the Makevars.in file. The new
> challenge is that the Makevars file needs to be deleted after building.

I am pretty sure it does not need to be deleted. Just ignore it in the 
build (i.e. list it in .Rbuildignore, so it doesn't end up in the 
tarball, and each system installing the package recreates it).

Duncan Murdoch

> 
> The approach I have now is a cleanup script with only rm -rf src/Makevars.
> 
> This works *only* when --preclean or --clean is called. SO I'm not sure if
> it is a
> permanent solution. For example devtools::document() doesn't run the clean
> step nor does pkgbuild::compile_dll().
> 
> I may keep banging my head against the keyboard on this...
> 
> *
> https://github.com/Rdatatable/data.table/blob/08e94b7f4af3fc4403959282bf81c490ebdf9e72/src/Makevars.in#L7
> 
> On Fri, Nov 8, 2024 at 12:04 PM Ivan Krylov <ikrylov using disroot.org> wrote:
> 
>> В Fri, 8 Nov 2024 11:44:15 -0800
>> Josiah Parry <josiah.parry using gmail.com> пишет:
>>
>>> Do you know of any good documentation on the use of Makevars.in with
>>> configure?
>>
>> A configure script for an R package could be any POSIX-compatible shell
>> script, including a hand-written one that substitutes strings using sed
>> [*], or even one that delegates to R [**]. If you do want to use GNU
>> Autoconf, the relevant sections of the manual are 4.8 and 7.2:
>>
>> https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/html_node/Makefile-Substitutions.html
>>
>> https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/html_node/Setting-Output-Variables.html
>>
>> --
>> Best regards,
>> Ivan
>>
>> [*] https://github.com/jeroen/V8/blob/master/configure
>> [**] https://github.com/kevinushey/configure
>>
> 
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