add bsdtar to commands checked for TAR

git-svn-id: https://svn.r-project.org/R/trunk@88327 00db46b3-68df-0310-9c12-caf00c1e9a41

Author: ripley

configure

@@ -5665,7 +5665,7 @@ printf "%s\n" "$as_me: WARNING: ${warn_pager}" >&2;}
 fi
 
 ## Tar -- we prefer a GNU version
-for ac_prog in ${TAR} gtar gnutar tar
+for ac_prog in ${TAR} gtar gnutar tar bsdtar
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2

configure.ac

@@ -705,7 +705,7 @@ AC_SUBST(MAKE)
 ## Pager
 R_PROG_PAGER
 ## Tar -- we prefer a GNU version
-AC_PATH_PROGS(TAR, [${TAR} gtar gnutar tar], "")
+AC_PATH_PROGS(TAR, [${TAR} gtar gnutar tar bsdtar], "")
 ## TeXMF stuff
 R_PROG_TEXMF
 ## Unzip & zip & gzip & bip2

doc/NEWS.Rd

@@ -66,7 +66,8 @@
 
   \subsection{INSTALLATION}{
     \itemize{
-      \item .
+      \item \command{configure} appends \command{bsdtar} to the list of
+      command names it tries when finding a default for \env{TAR}.
     }
   }
 

src/library/utils/man/tar.Rd

@@ -105,11 +105,12 @@ tar(tarfile, files = NULL,
   FreeBSD and Windows 10 use \command{bsdtar} from the \I{libarchive}
   project (but for macOS often a quite-old version), and commercial
   Unixes will have their own versions. \command{bsdtar} is available for
-  many other platforms: macOS up to at least 10.9 (but not recently) had
+  many other platforms (sometimes bundled with \code{libarchive},
+  sometimes not) : macOS used to have
   GNU \command{tar} as \command{gnutar} and other platforms,
   e.g.\sspace{}Solaris, have it as \command{gtar}: on a Unix-alike
   \command{configure} will try \command{gnutar} and \command{gtar}
-  before \code{tar}.
+  before \command{tar} (and then \command{bsdtar}).
 
   %% Heirloom Toolchest (http://heirloom.sourceforge.net/) is
   %% another implementation available on NetBSD, but probably not the default.