[R-pkg-devel] R_MAKEVARS_USER fail to pass down to sub-makes?

Jan Gorecki j@goreck| @end|ng |rom w|t@edu@p|
Mon Jun 1 20:10:41 CEST 2020

Thank you Jeff for your comments.
Yet they does not seem to be related.
a) Environment variable is created inside `system` command, so env var
stays valid for the command. Which is confirmed in the first call that
properly shows CFLAGS.
b) Syntax passed checkbashisms so I expect no problems due to that.

On Mon, Jun 1, 2020 at 4:03 PM Jeff Newmiller <jdnewmil using dcn.davis.ca.us> wrote:
> I don't know anything about the function of that environment variable, but
> a) system() invokes a child process so environment variable changes made using it will only affect the child process created by that system call.
> b) The syntax you have used is shell-specific, so does not look portable.
> On June 1, 2020 4:58:19 AM PDT, Jan Gorecki <j.gorecki using wit.edu.pl> wrote:
> >Hi package devel support,
> >
> >I am trying to use R_MAKEVARS_USER to customize build, rather than
> >.R/Makevars. It is properly displayed from config CFLAGS but during
> >package install it doesn't seem to work.
> >
> >In R-admin in "6.3.3 Customizing package compilation" there is:
> >
> >> Note that these mechanisms do not work with packages which fail to
> >pass settings down to sub-makes, perhaps reading etc/Makeconf in
> >makefiles in subdirectories.
> >
> >It seems that it applies to me. How should I debug that? to make this
> >env var respected? Note that my pkg has src/Makevars to handle openmp
> >switch nicely
> >Thank you
> >
> >system("R_MAKEVARS_USER=library/gcc/O3/Makevars R CMD config CFLAGS")
> >-O3
> >
> >system("R_MAKEVARS_USER=library/gcc/O3/Makevars R CMD INSTALL
> >--library=library/gcc/O3 mypkg_1.0.0.tar.gz")
> >* installing *source* package 'mypkg' ...
> >** using staged installation
> >** libs
> >gcc -std=gnu99 -I"/usr/share/R/include" -DNDEBUG    -fopenmp -fpic  -g
> >-O2 -fdebug-prefix-map=/build/r-base-V28x5H/r-base-3.6.3=.
> >-fstack-protector-strong -Wformat -Werror=format-security -Wdate-time
> >-D_FORTIFY_SOURCE=2 -g  -c assign.c -o assign.o
> >
> >______________________________________________
> >R-package-devel using r-project.org mailing list
> >https://stat.ethz.ch/mailman/listinfo/r-package-devel
> --
> Sent from my phone. Please excuse my brevity.

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