[R-pkg-devel] Non-portable flags.
r@turner @end|ng |rom @uck|@nd@@c@nz
Wed Jun 5 00:42:44 CEST 2019
I am working on a revision of my Iso package (which hasn't been revised
for quite a while) and have added in registration of Fortran routines
that are called directly by .Fortran() in R functions.
When I do
R CMD check --as-cran Iso_0.0-18.tar.gz
I get a "NOTE":
> Compilation used the following non-portable flag(s):
> ‘-Wdate-time’ ‘-Werror=format-security’ ‘-Wformat’
After experimenting with building a *.so file directly using SHLIB I
discerned that the problem appears to arise from the compilation of the
init.c file that I placed in "src" to effect the routine registration:
> gcc -std=gnu99 -I"/usr/share/R/include" -DNDEBUG -fpic -g -O2
> -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time
> -D_FORTIFY_SOURCE=2 -g -c init.c -o init.o
I presume that I should do something about this note. (Non-portability
is indeed an egregious sin.) How can I tell gcc not to use these flags?
Note that the NOTE does not arise unless I use the "--as-cran" flag.
Thanks for any insight.
P.S. I am running Ubuntu 18.04. Happy to supply any further details
that might be relevant.
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Department of Statistics
University of Auckland
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