[svn-r13138] Description:

	Auto-detect the support for the posix_memalign routine and disable
the direct I/O VFD if posix_memalign is not supported.  This should allow
direct I/O to be auto-detected and disabled on FreeBSD.  (Direct I/O itself
works fine, but doesn't have the alignment requirements on FreeBSD that it
has on Linux, so the code would have to be re-worked to not use posix_memalign
and we don't need to support that right now).

Tested on:
	FreeBSD/32 6.1 (duty)
	Linux/32 2.4 (kagiso)

3 files changed, 77 insertions, 11 deletions

diff --git a/configure b/configure
index 60f7d1a..c1bdcbf 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Id: configure.in 12929 2006-11-16 21:44:35Z jlaird .
+# From configure.in Id: configure.in 13080 2006-12-20 16:22:54Z epourmal .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.60 for HDF5 1.8.0-alpha6.
 #
@@ -57886,8 +57886,74 @@ eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#ifdef FC_DUMMY_MAIN
+#ifndef FC_DUMMY_MAIN_EQ_F77
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int FC_DUMMY_MAIN() { return 1; }
+#endif
+#endif
+int
+main ()
+{
+posix_memalign()
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
+  { (case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
   hdf5_direct_io=yes
 else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	hdf5_direct_io=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+else
   echo "$as_me: program exited with status $ac_status" >&5
 echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
diff --git a/configure.in b/configure.in
index d24dabc..66c0a72 100644
--- a/configure.in
+++ b/configure.in
@@ -2607,7 +2607,7 @@ if test "$DIRECT_VFD" = "yes"; then
              close(fid);  
              remove("tst_file"); 
              exit (0);
-          }], [hdf5_direct_io=yes], [hdf5_direct_io=no],)])
+          }], AC_TRY_LINK(, [posix_memalign()], [hdf5_direct_io=yes], [hdf5_direct_io=no]), [hdf5_direct_io=no],)])
 
    if test ${hdf5_direct_io} = "yes"; then
       AC_MSG_RESULT([yes])
diff --git a/src/Makefile.in b/src/Makefile.in
index 3f66871..66dc381 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -87,15 +87,15 @@ am_libhdf5_la_OBJECTS = H5.lo H5checksum.lo H5dbg.lo H5system.lo \
 	H5B2test.lo H5C.lo H5CS.lo H5D.lo H5Dcompact.lo H5Dcontig.lo \
 	H5Defl.lo H5Dio.lo H5Distore.lo H5Dmpio.lo H5Doh.lo \
 	H5Dselect.lo H5Dtest.lo H5E.lo H5F.lo H5Fdbg.lo H5Ffake.lo \
-	H5Fmount.lo H5Fsfile.lo H5Fsuper.lo H5Ftest.lo H5FD.lo H5FDcore.lo \
-	H5FDdirect.lo H5FDfamily.lo H5FDlog.lo H5FDmpi.lo H5FDmpio.lo \
-	H5FDmpiposix.lo H5FDmulti.lo H5FDsec2.lo H5FDstdio.lo \
-	H5FDstream.lo H5FL.lo H5FO.lo H5FS.lo H5FScache.lo H5FSdbg.lo \
-	H5FSsection.lo H5G.lo H5Gbtree2.lo H5Gcompact.lo H5Gdense.lo \
-	H5Gdeprec.lo H5Gent.lo H5Glink.lo H5Gloc.lo H5Gname.lo \
-	H5Gnode.lo H5Gobj.lo H5Goh.lo H5Gstab.lo H5Gtest.lo \
-	H5Gtraverse.lo H5HF.lo H5HFbtree2.lo H5HFcache.lo H5HFdbg.lo \
-	H5HFdblock.lo H5HFdtable.lo H5HFhdr.lo H5HFhuge.lo \
+	H5Fmount.lo H5Fsfile.lo H5Fsuper.lo H5Ftest.lo H5FD.lo \
+	H5FDcore.lo H5FDdirect.lo H5FDfamily.lo H5FDlog.lo H5FDmpi.lo \
+	H5FDmpio.lo H5FDmpiposix.lo H5FDmulti.lo H5FDsec2.lo \
+	H5FDstdio.lo H5FDstream.lo H5FL.lo H5FO.lo H5FS.lo \
+	H5FScache.lo H5FSdbg.lo H5FSsection.lo H5G.lo H5Gbtree2.lo \
+	H5Gcompact.lo H5Gdense.lo H5Gdeprec.lo H5Gent.lo H5Glink.lo \
+	H5Gloc.lo H5Gname.lo H5Gnode.lo H5Gobj.lo H5Goh.lo H5Gstab.lo \
+	H5Gtest.lo H5Gtraverse.lo H5HF.lo H5HFbtree2.lo H5HFcache.lo \
+	H5HFdbg.lo H5HFdblock.lo H5HFdtable.lo H5HFhdr.lo H5HFhuge.lo \
 	H5HFiblock.lo H5HFiter.lo H5HFman.lo H5HFsection.lo \
 	H5HFspace.lo H5HFstat.lo H5HFtest.lo H5HFtiny.lo H5HG.lo \
 	H5HGdbg.lo H5HL.lo H5HLdbg.lo H5HP.lo H5I.lo H5MF.lo H5MM.lo \