Thanks!
In that file, I see:
CC = clang
CFLAGS = -Wall -mtune=core2 -g -O2 $(LTO)
will having -O0 instead give me all the variables or is there a flag for better
debugging (I guess -g does it a little already)?
Thanks again
> On 17 Jun 2017, at 21:57, Dirk Eddelbuettel <e...@debian.org> wrote:
>
>
> On 17 June 2017 at 21:32, Guillaume Chapron wrote:
> | I am trying to debug some C code that is run only through a R package. I
> debug with lldb but I always get a message telling that the package "was
> compiled with optimization - stepping may behave oddly; variables may not be
> available.” And in fact, I cannot evaluate all variables and understand what
> is wrong. I have created a Makevars file in ~/.R/ that contains C=clang -O0
> -g but it does not seem to change much. What should I do to make sure I can
> evaluate all variables in lldb? I am on a Mac and I wrote C=clang because I
> read that it produced much better error messages but I am happy to use gcc as
> well if this can be a solution.
>
> Edit the file Makeconf in e.g.
>
> R> file.path(Sys.getenv("R_HOME"), "etc", "Makeconf")
> [1] "/usr/lib/R/etc/Makeconf"
> R>
>
> It has those settings hardwired from when R itself was compiled for you. You
> probably want to keep a copy of the original file to be able to revert.
>
> Dirk
>
> --
> http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
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