Support setting link lib only

Author: jeroen

R/tbb.R

@@ -75,7 +75,7 @@ tbbCxxFlags <- function() {
 tbbLdFlags<-function() {
 
 # shortcut if TBB_LIB defined
-tbbLib<- Sys.getenv("TBB_LIB", unset=TBB_LIB)
+tbbLib<- Sys.getenv("TBB_LINK_LIB", Sys.getenv("TBB_LIB", unset=TBB_LIB))
 if (nzchar(tbbLib)) {
 fmt<-"-L%1$s -Wl,-rpath,%1$s -ltbb -ltbbmalloc"
 return(sprintf(fmt, asBuildPath(tbbLib)))