[Rcpp-devel] Rcpp build trouble with strings

Wush Wu

Mon, Aug 19, 2013 8:39 PM

Thanks for you correction, Dirk.

It seems that if I don't care about portability, I could add the absolutely
path of the .so files into OBJECTS in Makevars.

For example:

```
## Use the R_HOME indirection to support installations of multiple R version
PKG_LIBS = `$(R_HOME)/bin/Rscript -e "Rcpp:::LdFlags()"`

OBJECTS = RcppExports.o rcpp_hello_world.o
/home/wush/Test/TestLinking/inst/linkHello.so
```

Is that correct?

Thanks,

Wush

2013/8/20 Dirk Eddelbuettel <edd at debian.org>

On 20 August 2013 at 08:34, Wush Wu wrote:
| Maybe you need to set some flag in NAMESPACES to ask the package to load
| required libraries.

No, not at all.

The system linker still needs to find it. Example from my system:

edd at max:~$ ldd /usr/local/lib/R/site-library/RcppGSL/libs/RcppGSL.so
        linux-vdso.so.1 =>  (0x00007ffff97fe000)
        libgsl.so.0 => /usr/lib/libgsl.so.0 (0x00007f77d6211000)
        libgslcblas.so.0 => /usr/lib/libgslcblas.so.0 (0x00007f77d5fc9000)
        libRcpp.so => /usr/local/lib/R/site-library/Rcpp/lib/libRcpp.so
(0x00007f77d5d4a000)
        libR.so => /usr/lib/libR.so (0x00007f77d5848000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(0x00007f77d5545000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f77d523f000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1
(0x00007f77d5029000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f77d4c61000)
        libblas.so.3 => /usr/lib/libblas.so.3 (0x00007f77d328f000)
        libreadline.so.6 => /lib/x86_64-linux-gnu/libreadline.so.6
(0x00007f77d304d000)
        libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3
(0x00007f77d2e0e000)
        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5
(0x00007f77d2beb000)
        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0
(0x00007f77d29db000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f77d27c4000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f77d25bb000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f77d23b7000)
        libgomp.so.1 => /usr/lib/x86_64-linux-gnu/libgomp.so.1
(0x00007f77d21a8000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f77d1f8a000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f77d689f000)
        libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5
(0x00007f77d1d62000)
edd at max:~$

All libraries resolve cleanly -- and I can of course load the package.

Dirk

--
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com

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[Rcpp-devel] Rcpp build trouble with strings

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