Take another look at R-exts, specifically
https://cran.r-project.org/doc/manuals/R-exts.html#Registering-native-routines
Your call
R_forceSymbols(dll, TRUE);
says you want foreign function calls to only work with entry points
specified by R objects representing native symbols. This was not being
enforced but is now in R devel.
Your NAMESPACE file directive
useDynLib(splines, .registration = TRUE, .fixes = "C_")
says that these R objects should use a C_ prefix, so your .Fortran
call should be
res <- .Fortran(C_bt, as.double(Temp), as.double(y), as.integer(icode))
So you can either fix your .Fortran call to be consistent with what
you have asked R to use, or drop the R_forceSymbols call.
Best,
luke
On Sat, 25 Mar 2023, Shawn Way wrote:
Sorry to kind of repeat this but I really didn't understand the issues with the
prior thread and how it relates to my issue.
I'm getting the error message in
B_T <- BT(Temp)
Error in BT(Temp) : DLL requires the use of native symbols
Execution halted
And frankly, I have no idea what this means. The function call is pretty
simple and meets the requirement of .Fortran
res <- .Fortran('BT', as.double(Temp), as.double(y), as.integer(icode))
and the following matches the R-ext's method for using registration:
extern void F77_NAME(bt)(double *T, double *B, int *icode);
void R_init_IAPWS95(DllInfo *dll)
{
R_registerRoutines(dll, NULL, NULL, FortranEntries, NULL);
R_useDynamicSymbols(dll, FALSE);
R_forceSymbols(dll, TRUE);
}
With
static const R_FortranMethodDef FortranEntries[] = {
{"bt", (DL_FUNC) &F77_NAME(bt), 3},
{NULL, NULL, 0}
};
Furthermore the NAMESPACE includes:
useDynLib(splines, .registration = TRUE, .fixes = "C_")
which matches R-ext.
Since this is only occurring on the Linux versions for the software and I use
windows, can someone point me in the right direction to fix this error?
Shawn Way
[[alternative HTML version deleted]]
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-package-devel
--
Luke Tierney
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa Phone: 319-335-3386
Department of Statistics and Fax: 319-335-3017
Actuarial Science
241 Schaeffer Hall email: [email protected]
Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-package-devel
