[Rd] dqrdc2_ dqrsl_ dtrsl_ missing from libs? compiling earth standalone

Casper Clemence maninalift at googlemail.com
Fri May 8 16:42:16 CEST 2009


I just linked to the libR.a :¬/

2009/5/8 Casper Clemence <maninalift at googlemail.com>:
> I have been trying to compile the earth Multivariate Adaptive
> Regression of Splines package as a standalone application under Linux
> (x86_64 kernel- openSUSE 11.1) with gcc 4.3.2.
> The package compiles without problems from within R as an R module and
> I get the following linker error:
>    earth.c:(.text+0x1a14): undefined reference to `dqrdc2_'
>    earth.c:(.text+0x1ae4): undefined reference to `dqrsl_'
>    earth.c:(.text+0x1d99): undefined reference to `dtrsl_'
> earth.c includes:
>   extern _C_ int dqrdc2_(...
>   extern _C_ int dqrsl_(...
>   extern _C_ void dtrsl_(..
>   extern _C_ void daxpy_(...
>   extern _C_ double ddot_(...
> I'm linking against libRblas.so and libRlapack.so so I did "nm
> libRblas.so libRlapack.so" and found that there were no symbols for
> dqrdc2_, dqrsl_, dqrsl_ and dtrsl_.
> The functions are declared in "R_ext/Applic.h" and implemented in
> separate f77 files.
> I find that libR.a appears to contain the symbols but there is no libR.so
> I'm compiling earth using:
>   gcc -DSTANDALONE -DMAIN -Wall -pedantic -Wextra -O3 -std=gnu99
> -I/home/badbear/Documents/code/localpackages/lib64/R/include
> -I../src/tests ../src/earth.c -L. -lblas -lRblas -lRlapack -o
> earthMain
> (I have placed libRblas.so and libRlapack.so in the local folder
> because I was having problems with linking to them in another
> location)
> Do I need to create a shared-object from libR.a? Do I need to link
> agains libR.a directly?
> Many thanks,
> Casper

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