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

[Jeff Newmiller]

Each call to system is independent, so it definitely is a problem.

Use Sys.setenv to make changes in environment variables that can be used within system calls.

Bash is not involved with the system call on Windows... so your syntax for setting an environment variable is not portable.

On June 1, 2020 11:10:41 AM PDT, Jan Gorecki <j.gorecki using wit.edu.pl> wrote:
>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.

-- 
Sent from my phone. Please excuse my brevity.