Merge pull request #782 in HDFFV/hdf5 from ~DEROBINS/hdf5_der:ar_fix to develop

* commit 'cb235453a9276c371085e40ea1c87d9b641e511e':
  Changed ar to always use -cr instead of the autotools default of cru.

config/linux-gnulibc1

@@ -30,11 +30,6 @@ if test -z "$CC"; then
     fi
 fi
 
-# Set flags for gnu ar (apparently via libtool, so AR_FLAGS, not ARFLAGS)
-# If you don't do this, you will get warnings about the 'u' in
-# automake's default 'cru' args.
-AR_FLAGS=crD
-
 # Figure out GNU C compiler flags
 . $srcdir/config/gnu-flags
 

configure.ac

@@ -759,12 +759,17 @@ fi
 ## Check which archiving tool to use. This needs to be done before
 ## the AM_PROG_LIBTOOL macro.
 ##
-
 if test -z "$AR"; then
   AC_CHECK_PROGS([AR], [ar xar], [:], [$PATH])
 fi
 AC_SUBST([AR])
 
+# Set the default ar flags to cr
+# The Automake default is to use cru and the 'u' causes ar
+# to emit warnings on some platforms.
+AR_FLAGS=cr
+
+
 ## Export the AR macro so that it will be placed in the libtool file
 ## correctly.
 export AR