[Rd] lbfgsb from C/C++

[axionator]

Hi,

I would like to call R's lbfgsb function from my C/C++ code by including
R_ext/Applic.h and linking against libR.
Currently, I am allocating memory for x (and the other input arrays for
lbfgsb) in my C/C++ code via malloc/new. However, this gives a segmentation
fault when executing the program.
I tried to allocate x via PROTECT(x = NEW_NUMERIC(n)); x_p =
NUMERIC_POINTER(x);.
This compiles but also gives a segmentation fault.
Is there a way to use lbfgsb from C/C++ directly (without an intermediate
call of R)? Did I miss any compile flags?

Thanks

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