remove cc_dir, use normalizePath() on default (#6259)

Author: MichaelChirico

.dev/cc.R

@@ -54,11 +54,7 @@ sourceImports = function(path=getwd(), quiet=FALSE) {
   return(invisible())
 }
 
-cc = function(test=FALSE, clean=FALSE, debug=FALSE, omp=!debug, cc_dir, path=Sys.getenv("PROJ_PATH", unset="."), CC="gcc", quiet=FALSE) {
-  if (!missing(cc_dir)) {
-    warning("'cc_dir' arg is deprecated, use 'path' argument or 'PROJ_PATH' env var instead")
-    path = cc_dir
-  }
+cc = function(test=FALSE, clean=FALSE, debug=FALSE, omp=!debug, path=Sys.getenv("PROJ_PATH", unset=normalizePath(".")), CC="gcc", quiet=FALSE) {
   stopifnot(is.character(CC), length(CC)==1L, !is.na(CC), nzchar(CC))
   gc()