[Rcpp-devel] Issues creating static library using Makevars

[Akhila Chowdary Kolla]

Hello Everyone,

I am trying to generate a C static library(libdeepstate.a) in an
Rcpp(inst/include/lib) package using Makevars similar to RInside(generating
RInside.so and RInside.a)
My static library libdeepstate.a  has four compiled c programs
[image: image.png]

I saved those files DeepState.c, Log.c,Option.c,Stream.c in inst/include
folder and using src/Makevars to compile those *.c files and link the
respective object files with the static library as follows:
src/Makevars:
USERLIBST=libdeepstate.a
USERDIR=../inst/lib
PKG_CPPFLAGS =-I. -I../inst/include/
PKG_LIBS =
all: $(SHLIB) userLibrary
SOURCES= ../inst/include/DeepState.c ../inst/include/Log.c
../inst/include/Option.c ../inst/include/Stream.c
OBJECTS= $(SOURCES:.c=.o)
userLibrary: $(USERLIBST)
- at if test ! -e $(USERDIR)$(R_ARCH); then mkdir -p $(USERDIR)$(R_ARCH); fi
cp $(USERLIBST) $(USERDIR)$(R_ARCH)
rm $(USERLIBST)

*$(USERLIBST): $(OBJECTS)$(AR) qc $(USERLIBST) $^*
@if test -n "$(RANLIB)"; then $(RANLIB) $(USERLIBST); fi

When I install the package I get something like this :







*gcc -I"/home/akhila/lib/R/include" -DNDEBUG -I. -I../inst/include/
-I/usr/local/include  -fpic  -g -O2  -c ../inst/include/DeepState.c -o
../inst/include/DeepState.ogcc -I"/home/akhila/lib/R/include" -DNDEBUG -I.
-I../inst/include/   -I/usr/local/include  -fpic  -g -O2  -c
../inst/include/Log.c -o ../inst/include/Log.ogcc
-I"/home/akhila/lib/R/include" -DNDEBUG -I. -I../inst/include/
-I/usr/local/include  -fpic  -g -O2  -c ../inst/include/Option.c -o
../inst/include/Option.ogcc -I"/home/akhila/lib/R/include" -DNDEBUG -I.
-I../inst/include/   -I/usr/local/include  -fpic  -g -O2  -c
../inst/include/Stream.c -o ../inst/include/Stream.ogcc -shared
-L/home/akhila/lib/R/lib -L/usr/local/lib -o testproject.so
../inst/include/DeepState.o ../inst/include/Log.o ../inst/include/Option.o
../inst/include/Stream.o -L/home/akhila/lib/R/lib -lRar qc libdeepstate.a
../inst/include/DeepState.o ../inst/include/Log.o ../inst/include/Option.o
../inst/include/Stream.ocp libdeepstate.a ../inst/lib*
*rm libdeepstate.a*

The code can be found in GitHub:https://github.com/akhikolla/RcppDeepState/
This Travis build has the complete details of the warnings:
https://travis-ci.org/github/akhikolla/RcppDeepState/builds/702470420
But when I check the package I get the following warnings: using
devtools::check()
*W  checking pragmas in C/C++ headers and code ... WARNING*





































*   File which contains non-portable pragma(s)     ‘inst/include/Log.c’
 File which contains pragma(s) suppressing diagnostics:
 ‘inst/include/Log.c’✓  checking compilation flags used ...W  checking
compiled code ...   File ‘testproject/libs/testproject.so’:     Found
‘__assert_fail’, possibly from ‘assert’ (C)       Object:
‘../inst/include/DeepState.o’     Found ‘__printf_chk’, possibly from
‘printf’ (C)       Objects: ‘../inst/include/DeepState.o’,
‘../inst/include/Log.o’     Found ‘abort’, possibly from ‘abort’ (C)
 Object: ‘../inst/include/DeepState.o’     Found ‘exit’, possibly from
‘exit’ (C)       Objects: ‘../inst/include/DeepState.o’,
‘../inst/include/Option.o’     Found ‘printf’, possibly from ‘printf’ (C)
     Object: ‘../inst/include/Log.o’     Found ‘puts’, possibly from
‘printf’ (C), ‘puts’ (C)       Objects: ‘../inst/include/DeepState.o’,
‘../inst/include/Log.o’     Found ‘rand’, possibly from ‘rand’ (C)
 Object: ‘../inst/include/DeepState.o’     Found ‘srand’, possibly from
‘srand’ (C)       Object: ‘../inst/include/DeepState.o’     Found ‘stderr’,
possibly from ‘stderr’ (C)       Object: ‘../inst/include/Log.o’     Found
‘stdout’, possibly from ‘stdout’ (C)       Object: ‘../inst/include/Log.o’
   Found ‘vprintf’, possibly from ‘vprintf’ (C)       Object:
‘../inst/include/Log.o’   File ‘testproject/libs/testproject.so’:     Found
no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’    Compiled code
should not call entry points which might terminate R nor write to
stdout/stderr instead of to the console, nor use Fortran I/O nor system
RNGs. It is good practice to register native routines and to disable
symbol search.*

  *Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’  - why is
this necessary as I am trying to compile some external C
files(inst/include/DeepState.c) which are not in src folder*
   *Compiled code should not call entry points which might terminate R
nor write to stdout/stderr instead of to the console, nor use Fortran
I/O nor system RNGs. - what does this mean?*
how can I solve this issue and get rid of the warning in the R CMD check?
Can someone please suggest a way to resolve this?


Regards,
Akhila Chowdary Kolla
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