On Wed, Jul 04, 2007 at 04:39:18AM -0700, Deb Midya wrote: > Hi R Users, > > Thanks in advance. > > I am using R-2.5.1 on Windows XP. > > I am trying to call C code (testCX1.C) from R. testCX1.c calls another C > code (funcC1.c) and returning a value to testCX1.c. I like to have this value > in R. > > My steps are below: > > 1. R CMD SHLIB testCX1.c funcC1.c (at command propmt) > > 2. It creates testCX1.dll with warning (but testCX1.dll works): > > testCX1.c:38: warning: implicit declaration of function 'func' > > How to get rid off this error ?
By adding the prototype of 'func' to testCX1.c: SEXP func(SEXP a); Probably it is simplest to collect all prototypes in a single header file and include that from all .c files. > What is the best way to call funcC1.c from testCX1.c? See .C and .Call and in particular the 'Writing R Extensions' manual, 5 System and foreign language interfaces. Gabor [...] -- Csardi Gabor <[EMAIL PROTECTED]> MTA RMKI, ELTE TTK ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.