Tue, 02 Sep 2008 09:27:54 -0700 Google Inc. <opensource@google.com>

  * Fix problems found on OpenBSD platform.
    * Issue #1: vcdiff command-line executable crashes on startup.
      This was a problem with the stub intended to replace pthread_once if the
      package was not linked with the pthreads library.  Simplify gflags.cc to
      assume single-threaded execution.
    * Issue #2: Unit test blockhash_test fails.
      Define VCDIFF_USE_BLOCK_COMPARE_WORDS for BSD platforms to ensure that
      the most efficient version of memcmp is used in the encoder's inner loop.
  * Fix compilation warnings in gtest-filepath.cc: "warning: missing
    initializer for member 'stat::...'"


git-svn-id: http://open-vcdiff.googlecode.com/svn/trunk@16 132ac840-3546-0410-a738-d3f8764196be

12 files changed, 65 insertions, 1435 deletions

diff --git a/ChangeLog b/ChangeLog
index 9af8f59..395532e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,18 @@
+Tue, 02 Sep 2008 09:27:54 -0700  Google Inc. <opensource@google.com>
+
+  * Fix problems found on OpenBSD platform.
+    * Issue #1: vcdiff command-line executable crashes on startup.
+      This was a problem with the stub intended to replace pthread_once if the
+      package was not linked with the pthreads library.  Simplify gflags.cc to
+      assume single-threaded execution.
+    * Issue #2: Unit test blockhash_test fails.
+      Define VCDIFF_USE_BLOCK_COMPARE_WORDS for BSD platforms to ensure that
+      the most efficient version of memcmp is used in the encoder's inner loop.
+  * Fix compilation warnings in gtest-filepath.cc: "warning: missing
+    initializer for member 'stat::...'"
+
 Mon, 16 Jun 2008 15:15:51 -0700  Google Inc. <opensource@google.com>
 
   * open-vcdiff: initial release:
   The open-vcdiff package provides an encoder and decoder for the VCDIFF format
   described in RFC 3284 (http://www.ietf.org/rfc/rfc3284.txt).
-
diff --git a/Makefile.in b/Makefile.in
index a8b2b95..e50ce58 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -59,7 +59,7 @@ DIST_COMMON = README $(am__configure_deps) $(dist_doc_DATA) \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/ac_have_attribute.m4 \
-	$(top_srcdir)/m4/acx_pthread.m4 $(top_srcdir)/configure.ac
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
@@ -264,9 +264,6 @@ PACKAGE_STRING = @PACKAGE_STRING@
 PACKAGE_TARNAME = @PACKAGE_TARNAME@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 PATH_SEPARATOR = @PATH_SEPARATOR@
-PTHREAD_CC = @PTHREAD_CC@
-PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
-PTHREAD_LIBS = @PTHREAD_LIBS@
 RANLIB = @RANLIB@
 SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@
@@ -278,7 +275,6 @@ ac_ct_CXX = @ac_ct_CXX@
 ac_ct_F77 = @ac_ct_F77@
 ac_ct_RANLIB = @ac_ct_RANLIB@
 ac_ct_STRIP = @ac_ct_STRIP@
-acx_pthread_config = @acx_pthread_config@
 am__fastdepCC_FALSE = @am__fastdepCC_FALSE@
 am__fastdepCC_TRUE = @am__fastdepCC_TRUE@
 am__fastdepCXX_FALSE = @am__fastdepCXX_FALSE@
diff --git a/aclocal.m4 b/aclocal.m4
index f143b0a..de12898 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -7266,4 +7266,3 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([m4/ac_have_attribute.m4])
-m4_include([m4/acx_pthread.m4])
diff --git a/configure b/configure
index c574ac7..01797f8 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.59 for open-vcdiff 0.1.
+# Generated by GNU Autoconf 2.59 for open-vcdiff 0.2.
 #
 # Report bugs to <opensource@google.com>.
 #
@@ -423,8 +423,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
 # Identity of this package.
 PACKAGE_NAME='open-vcdiff'
 PACKAGE_TARNAME='open-vcdiff'
-PACKAGE_VERSION='0.1'
-PACKAGE_STRING='open-vcdiff 0.1'
+PACKAGE_VERSION='0.2'
+PACKAGE_STRING='open-vcdiff 0.2'
 PACKAGE_BUGREPORT='opensource@google.com'
 
 ac_unique_file="README"
@@ -465,7 +465,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CPP CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE GCC_TRUE GCC_FALSE build build_cpu build_vendor build_os host host_cpu host_vendor host_os EGREP LN_S ECHO AR ac_ct_AR RANLIB ac_ct_RANLIB CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL LIBTOOL_DEPS acx_pthread_config PTHREAD_CC PTHREAD_LIBS PTHREAD_CFLAGS LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CPP CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE GCC_TRUE GCC_FALSE build build_cpu build_vendor build_os host host_cpu host_vendor host_os EGREP LN_S ECHO AR ac_ct_AR RANLIB ac_ct_RANLIB CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL LIBTOOL_DEPS LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -954,7 +954,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures open-vcdiff 0.1 to adapt to many kinds of systems.
+\`configure' configures open-vcdiff 0.2 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1020,7 +1020,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of open-vcdiff 0.1:";;
+     short | recursive ) echo "Configuration of open-vcdiff 0.2:";;
    esac
   cat <<\_ACEOF
 
@@ -1159,7 +1159,7 @@ fi
 test -n "$ac_init_help" && exit 0
 if $ac_init_version; then
   cat <<\_ACEOF
-open-vcdiff configure 0.1
+open-vcdiff configure 0.2
 generated by GNU Autoconf 2.59
 
 Copyright (C) 2003 Free Software Foundation, Inc.
@@ -1173,7 +1173,7 @@ cat >&5 <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by open-vcdiff $as_me 0.1, which was
+It was created by open-vcdiff $as_me 0.2, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   $ $0 $@
@@ -1817,7 +1817,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='open-vcdiff'
- VERSION='0.1'
+ VERSION='0.2'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -18748,11 +18748,13 @@ fi
 
 
 case $host in
-  *86*-*-gnu*)
+  *86*-*-*bsd* | *86*-*-gnu*)
+
 cat >>confdefs.h <<\_ACEOF
 #define VCDIFF_USE_BLOCK_COMPARE_WORDS 1
 _ACEOF
 
+    ;;
 esac
 
 
@@ -20407,208 +20409,6 @@ fi
 done
 
 
-for ac_func in InitializeCriticalSection
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
-for ac_func in InterlockedCompareExchange
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
 
 for ac_func in strtoll strtoq
 do
@@ -20968,723 +20768,6 @@ _ACEOF
 echo "${ECHO_T}$ac_cv___attribute__" >&6
 
 
-
-
-
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-acx_pthread_ok=no
-
-# We used to check for pthread.h first, but this fails if pthread.h
-# requires special compiler flags (e.g. on True64 or Sequent).
-# It gets checked for in the link test anyway.
-
-# First of all, check if the user has set any of the PTHREAD_LIBS,
-# etcetera environment variables, and if threads linking works using
-# them:
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        echo "$as_me:$LINENO: checking for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS" >&5
-echo $ECHO_N "checking for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS... $ECHO_C" >&6
-        cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char pthread_join ();
-int
-main ()
-{
-pthread_join ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  acx_pthread_ok=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-        echo "$as_me:$LINENO: result: $acx_pthread_ok" >&5
-echo "${ECHO_T}$acx_pthread_ok" >&6
-        if test x"$acx_pthread_ok" = xno; then
-                PTHREAD_LIBS=""
-                PTHREAD_CFLAGS=""
-        fi
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-fi
-
-# We must check for the threads library under a number of different
-# names; the ordering is very important because some systems
-# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
-# libraries is broken (non-POSIX).
-
-# Create a list of thread flags to try.  Items starting with a "-" are
-# C compiler flags, and other items are library names, except for "none"
-# which indicates that we try without any flags at all, and "pthread-config"
-# which is a program returning the flags for the Pth emulation library.
-
-acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
-
-# The ordering *is* (sometimes) important.  Some notes on the
-# individual items follow:
-
-# pthreads: AIX (must check this before -lpthread)
-# none: in case threads are in libc; should be tried before -Kthread and
-#       other compiler flags to prevent continual compiler warnings
-# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
-# -pthreads: Solaris/gcc
-# -mthreads: Mingw32/gcc, Lynx/gcc
-# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
-#      doesn't hurt to check since this sometimes defines pthreads too;
-#      also defines -D_REENTRANT)
-#      ... -mt is also the pthreads flag for HP/aCC
-# pthread: Linux, etcetera
-# --thread-safe: KAI C++
-# pthread-config: use pthread-config program (for GNU Pth library)
-
-case "${host_cpu}-${host_os}" in
-        *solaris*)
-
-        # On Solaris (at least, for some versions), libc contains stubbed
-        # (non-functional) versions of the pthreads routines, so link-based
-        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
-        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
-        # a function called by this macro, so we could check for that, but
-        # who knows whether they'll stub that too in a future libc.)  So,
-        # we'll just look for -pthreads and -lpthread first:
-
-        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
-        ;;
-esac
-
-if test x"$acx_pthread_ok" = xno; then
-for flag in $acx_pthread_flags; do
-
-        case $flag in
-                none)
-                echo "$as_me:$LINENO: checking whether pthreads work without any flags" >&5
-echo $ECHO_N "checking whether pthreads work without any flags... $ECHO_C" >&6
-                ;;
-
-                -*)
-                echo "$as_me:$LINENO: checking whether pthreads work with $flag" >&5
-echo $ECHO_N "checking whether pthreads work with $flag... $ECHO_C" >&6
-                PTHREAD_CFLAGS="$flag"
-                ;;
-
-		pthread-config)
-		# Extract the first word of "pthread-config", so it can be a program name with args.
-set dummy pthread-config; ac_word=$2
-echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
-if test "${ac_cv_prog_acx_pthread_config+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -n "$acx_pthread_config"; then
-  ac_cv_prog_acx_pthread_config="$acx_pthread_config" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_exec_ext in '' $ac_executable_extensions; do
-  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_acx_pthread_config="yes"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-done
-
-  test -z "$ac_cv_prog_acx_pthread_config" && ac_cv_prog_acx_pthread_config="no"
-fi
-fi
-acx_pthread_config=$ac_cv_prog_acx_pthread_config
-if test -n "$acx_pthread_config"; then
-  echo "$as_me:$LINENO: result: $acx_pthread_config" >&5
-echo "${ECHO_T}$acx_pthread_config" >&6
-else
-  echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-fi
-
-		if test x"$acx_pthread_config" = xno; then continue; fi
-		PTHREAD_CFLAGS="`pthread-config --cflags`"
-		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
-		;;
-
-                *)
-                echo "$as_me:$LINENO: checking for the pthreads library -l$flag" >&5
-echo $ECHO_N "checking for the pthreads library -l$flag... $ECHO_C" >&6
-                PTHREAD_LIBS="-l$flag"
-                ;;
-        esac
-
-        save_LIBS="$LIBS"
-        save_CFLAGS="$CFLAGS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Check for various functions.  We must include pthread.h,
-        # since some functions may be macros.  (On the Sequent, we
-        # need a special flag -Kthread to make this header compile.)
-        # We check for pthread_join because it is in -lpthread on IRIX
-        # while pthread_create is in libc.  We check for pthread_attr_init
-        # due to DEC craziness with -lpthreads.  We check for
-        # pthread_cleanup_push because it is one of the few pthread
-        # functions on Solaris that doesn't have a non-functional libc stub.
-        # We try pthread_create on general principles.
-        cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <pthread.h>
-int
-main ()
-{
-pthread_t th; pthread_join(th, 0);
-                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
-                     pthread_create(0,0,0,0); pthread_cleanup_pop(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  acx_pthread_ok=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-
-        echo "$as_me:$LINENO: result: $acx_pthread_ok" >&5
-echo "${ECHO_T}$acx_pthread_ok" >&6
-        if test "x$acx_pthread_ok" = xyes; then
-                break;
-        fi
-
-        PTHREAD_LIBS=""
-        PTHREAD_CFLAGS=""
-done
-fi
-
-# Various other checks:
-if test "x$acx_pthread_ok" = xyes; then
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
-	echo "$as_me:$LINENO: checking for joinable pthread attribute" >&5
-echo $ECHO_N "checking for joinable pthread attribute... $ECHO_C" >&6
-	attr_name=unknown
-	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
-	    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <pthread.h>
-int
-main ()
-{
-int attr=$attr; return attr;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  attr_name=$attr; break
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-	done
-        echo "$as_me:$LINENO: result: $attr_name" >&5
-echo "${ECHO_T}$attr_name" >&6
-        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
-
-cat >>confdefs.h <<_ACEOF
-#define PTHREAD_CREATE_JOINABLE $attr_name
-_ACEOF
-
-        fi
-
-        echo "$as_me:$LINENO: checking if more special flags are required for pthreads" >&5
-echo $ECHO_N "checking if more special flags are required for pthreads... $ECHO_C" >&6
-        flag=no
-        case "${host_cpu}-${host_os}" in
-            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
-            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
-        esac
-        echo "$as_me:$LINENO: result: ${flag}" >&5
-echo "${ECHO_T}${flag}" >&6
-        if test "x$flag" != xno; then
-            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
-        fi
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-        # More AIX lossage: must compile with xlc_r or cc_r
-	if test x"$GCC" != xyes; then
-          for ac_prog in xlc_r cc_r
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-echo "$as_me:$LINENO: checking for $ac_word" >&5
-echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
-if test "${ac_cv_prog_PTHREAD_CC+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -n "$PTHREAD_CC"; then
-  ac_cv_prog_PTHREAD_CC="$PTHREAD_CC" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_exec_ext in '' $ac_executable_extensions; do
-  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_PTHREAD_CC="$ac_prog"
-    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-done
-
-fi
-fi
-PTHREAD_CC=$ac_cv_prog_PTHREAD_CC
-if test -n "$PTHREAD_CC"; then
-  echo "$as_me:$LINENO: result: $PTHREAD_CC" >&5
-echo "${ECHO_T}$PTHREAD_CC" >&6
-else
-  echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-fi
-
-  test -n "$PTHREAD_CC" && break
-done
-test -n "$PTHREAD_CC" || PTHREAD_CC="${CC}"
-
-        else
-          PTHREAD_CC=$CC
-	fi
-
-	# The next part tries to detect GCC inconsistency with -shared on some
-	# architectures and systems. The problem is that in certain
-	# configurations, when -shared is specified, GCC "forgets" to
-	# internally use various flags which are still necessary.
-
-	#
-	# Prepare the flags
-	#
-	save_CFLAGS="$CFLAGS"
-	save_LIBS="$LIBS"
-	save_CC="$CC"
-
-	# Try with the flags determined by the earlier checks.
-	#
-	# -Wl,-z,defs forces link-time symbol resolution, so that the
-	# linking checks with -shared actually have any value
-	#
-	# FIXME: -fPIC is required for -shared on many architectures,
-	# so we specify it here, but the right way would probably be to
-	# properly detect whether it is actually required.
-	CFLAGS="-shared -fPIC -Wl,-z,defs $CFLAGS $PTHREAD_CFLAGS"
-	LIBS="$PTHREAD_LIBS $LIBS"
-	CC="$PTHREAD_CC"
-
-	# In order not to create several levels of indentation, we test
-	# the value of "$done" until we find the cure or run out of ideas.
-	done="no"
-
-	# First, make sure the CFLAGS we added are actually accepted by our
-	# compiler.  If not (and OS X's ld, for instance, does not accept -z),
-	# then we can't do this test.
-	if test x"$done" = xno; then
-	   echo "$as_me:$LINENO: checking whether to check for GCC pthread/shared inconsistencies" >&5
-echo $ECHO_N "checking whether to check for GCC pthread/shared inconsistencies... $ECHO_C" >&6
-	   cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  :
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-done=yes
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
-	   if test "x$done" = xyes ; then
-	      echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-	   else
-	      echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6
-	   fi
-	fi
-
-	if test x"$done" = xno; then
-	   echo "$as_me:$LINENO: checking whether -pthread is sufficient with -shared" >&5
-echo $ECHO_N "checking whether -pthread is sufficient with -shared... $ECHO_C" >&6
-	   cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <pthread.h>
-int
-main ()
-{
-pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  done=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
-	   if test "x$done" = xyes; then
-	      echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6
-	   else
-	      echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-	   fi
-	fi
-
-	#
-	# Linux gcc on some architectures such as mips/mipsel forgets
-	# about -lpthread
-	#
-	if test x"$done" = xno; then
-	   echo "$as_me:$LINENO: checking whether -lpthread fixes that" >&5
-echo $ECHO_N "checking whether -lpthread fixes that... $ECHO_C" >&6
-	   LIBS="-lpthread $PTHREAD_LIBS $save_LIBS"
-	   cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <pthread.h>
-int
-main ()
-{
-pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  done=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
-	   if test "x$done" = xyes; then
-	      echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6
-	      PTHREAD_LIBS="-lpthread $PTHREAD_LIBS"
-	   else
-	      echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-	   fi
-	fi
-	#
-	# FreeBSD 4.10 gcc forgets to use -lc_r instead of -lc
-	#
-	if test x"$done" = xno; then
-	   echo "$as_me:$LINENO: checking whether -lc_r fixes that" >&5
-echo $ECHO_N "checking whether -lc_r fixes that... $ECHO_C" >&6
-	   LIBS="-lc_r $PTHREAD_LIBS $save_LIBS"
-	   cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <pthread.h>
-int
-main ()
-{
-pthread_t th; pthread_join(th, 0);
-	        pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	        pthread_create(0,0,0,0); pthread_cleanup_pop(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&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'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  done=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
-	   if test "x$done" = xyes; then
-	      echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6
-	      PTHREAD_LIBS="-lc_r $PTHREAD_LIBS"
-	   else
-	      echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-	   fi
-	fi
-	if test x"$done" = xno; then
-	   # OK, we have run out of ideas
-	   { echo "$as_me:$LINENO: WARNING: Impossible to determine how to use pthreads with shared libraries" >&5
-echo "$as_me: WARNING: Impossible to determine how to use pthreads with shared libraries" >&2;}
-
-	   # so it's not safe to assume that we may use pthreads
-	   acx_pthread_ok=no
-	fi
-
-	CFLAGS="$save_CFLAGS"
-	LIBS="$save_LIBS"
-	CC="$save_CC"
-else
-        PTHREAD_CC="$CC"
-fi
-
-
-
-
-
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$acx_pthread_ok" = xyes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_PTHREAD 1
-_ACEOF
-
-        :
-else
-        acx_pthread_ok=no
-
-fi
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
 # End of definitions needed by gflags package
 
           ac_config_files="$ac_config_files Makefile"
@@ -22079,7 +21162,7 @@ _ASBOX
 } >&5
 cat >&5 <<_CSEOF
 
-This file was extended by open-vcdiff $as_me 0.1, which was
+This file was extended by open-vcdiff $as_me 0.2, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -22142,7 +21225,7 @@ _ACEOF
 
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-open-vcdiff config.status 0.1
+open-vcdiff config.status 0.2
 configured by $0, generated by GNU Autoconf 2.59,
   with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
 
@@ -22408,10 +21491,6 @@ s,@FFLAGS@,$FFLAGS,;t t
 s,@ac_ct_F77@,$ac_ct_F77,;t t
 s,@LIBTOOL@,$LIBTOOL,;t t
 s,@LIBTOOL_DEPS@,$LIBTOOL_DEPS,;t t
-s,@acx_pthread_config@,$acx_pthread_config,;t t
-s,@PTHREAD_CC@,$PTHREAD_CC,;t t
-s,@PTHREAD_LIBS@,$PTHREAD_LIBS,;t t
-s,@PTHREAD_CFLAGS@,$PTHREAD_CFLAGS,;t t
 s,@LIBOBJS@,$LIBOBJS,;t t
 s,@LTLIBOBJS@,$LTLIBOBJS,;t t
 CEOF
diff --git a/configure.ac b/configure.ac
index 43f5291..8872538 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@
 # make sure we're interpreted by some minimal autoconf
 AC_PREREQ(2.57)
 
-AC_INIT(open-vcdiff, 0.1, opensource@google.com)
+AC_INIT(open-vcdiff, 0.2, opensource@google.com)
 AC_CONFIG_SRCDIR(README)
 AM_INIT_AUTOMAKE
 AM_CONFIG_HEADER(src/config.h)
@@ -23,8 +23,10 @@ AC_SUBST(LIBTOOL_DEPS)
 AC_HEADER_STDC
 
 case $host in
-  *86*-*-gnu*) AC_DEFINE(VCDIFF_USE_BLOCK_COMPARE_WORDS, 1,
-			 Use custom compare function instead of memcmp)
+  *86*-*-*bsd* | *86*-*-gnu*)
+    AC_DEFINE(VCDIFF_USE_BLOCK_COMPARE_WORDS, 1,
+              Use custom compare function instead of memcmp)
+    ;;
 esac
 
 AC_CHECK_HEADERS([ext/rope])
@@ -42,15 +44,11 @@ AC_CHECK_FUNCS([mprotect])
 
 AC_CHECK_HEADERS([stdint.h sys/types.h inttypes.h])
 AC_CHECK_HEADERS([fnmatch.h])
-AC_CHECK_FUNCS([InitializeCriticalSection])
-AC_CHECK_FUNCS([InterlockedCompareExchange])
 AC_CHECK_FUNCS([strtoll strtoq])
 AC_CHECK_TYPES([uint16_t, u_int16_t, __int16])
 
 AX_C___ATTRIBUTE__
 
-ACX_PTHREAD
-
 # End of definitions needed by gflags package
 
 AC_CONFIG_FILES([Makefile])
diff --git a/m4/acx_pthread.m4 b/m4/acx_pthread.m4
deleted file mode 100644
index 2cf20de..0000000
--- a/m4/acx_pthread.m4
+++ /dev/null
@@ -1,363 +0,0 @@
-# This was retrieved from
-#    http://svn.0pointer.de/viewvc/trunk/common/acx_pthread.m4?revision=1277&root=avahi
-# See also (perhaps for new versions?)
-#    http://svn.0pointer.de/viewvc/trunk/common/acx_pthread.m4?root=avahi
-#
-# We've rewritten the inconsistency check code (from avahi), to work
-# more broadly.  In particular, it no longer assumes ld accepts -zdefs.
-# This caused a restructing of the code, but the functionality has only
-# changed a little.
-
-dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-dnl
-dnl @summary figure out how to build C programs using POSIX threads
-dnl
-dnl This macro figures out how to build C programs using POSIX threads.
-dnl It sets the PTHREAD_LIBS output variable to the threads library and
-dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
-dnl C compiler flags that are needed. (The user can also force certain
-dnl compiler flags/libs to be tested by setting these environment
-dnl variables.)
-dnl
-dnl Also sets PTHREAD_CC to any special C compiler that is needed for
-dnl multi-threaded programs (defaults to the value of CC otherwise).
-dnl (This is necessary on AIX to use the special cc_r compiler alias.)
-dnl
-dnl NOTE: You are assumed to not only compile your program with these
-dnl flags, but also link it with them as well. e.g. you should link
-dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
-dnl $LIBS
-dnl
-dnl If you are only building threads programs, you may wish to use
-dnl these variables in your default LIBS, CFLAGS, and CC:
-dnl
-dnl        LIBS="$PTHREAD_LIBS $LIBS"
-dnl        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-dnl        CC="$PTHREAD_CC"
-dnl
-dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
-dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
-dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
-dnl
-dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
-dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
-dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
-dnl default action will define HAVE_PTHREAD.
-dnl
-dnl Please let the authors know if this macro fails on any platform, or
-dnl if you have any other suggestions or comments. This macro was based
-dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
-dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
-dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
-dnl We are also grateful for the helpful feedback of numerous users.
-dnl
-dnl @category InstalledPackages
-dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
-dnl @version 2006-05-29
-dnl @license GPLWithACException
-dnl 
-dnl Checks for GCC shared/pthread inconsistency based on work by
-dnl Marcin Owsiany <marcin@owsiany.pl>
-
-
-AC_DEFUN([ACX_PTHREAD], [
-AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_SAVE
-AC_LANG_C
-acx_pthread_ok=no
-
-# We used to check for pthread.h first, but this fails if pthread.h
-# requires special compiler flags (e.g. on True64 or Sequent).
-# It gets checked for in the link test anyway.
-
-# First of all, check if the user has set any of the PTHREAD_LIBS,
-# etcetera environment variables, and if threads linking works using
-# them:
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
-        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test x"$acx_pthread_ok" = xno; then
-                PTHREAD_LIBS=""
-                PTHREAD_CFLAGS=""
-        fi
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-fi
-
-# We must check for the threads library under a number of different
-# names; the ordering is very important because some systems
-# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
-# libraries is broken (non-POSIX).
-
-# Create a list of thread flags to try.  Items starting with a "-" are
-# C compiler flags, and other items are library names, except for "none"
-# which indicates that we try without any flags at all, and "pthread-config"
-# which is a program returning the flags for the Pth emulation library.
-
-acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
-
-# The ordering *is* (sometimes) important.  Some notes on the
-# individual items follow:
-
-# pthreads: AIX (must check this before -lpthread)
-# none: in case threads are in libc; should be tried before -Kthread and
-#       other compiler flags to prevent continual compiler warnings
-# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
-# -pthreads: Solaris/gcc
-# -mthreads: Mingw32/gcc, Lynx/gcc
-# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
-#      doesn't hurt to check since this sometimes defines pthreads too;
-#      also defines -D_REENTRANT)
-#      ... -mt is also the pthreads flag for HP/aCC
-# pthread: Linux, etcetera
-# --thread-safe: KAI C++
-# pthread-config: use pthread-config program (for GNU Pth library)
-
-case "${host_cpu}-${host_os}" in
-        *solaris*)
-
-        # On Solaris (at least, for some versions), libc contains stubbed
-        # (non-functional) versions of the pthreads routines, so link-based
-        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
-        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
-        # a function called by this macro, so we could check for that, but
-        # who knows whether they'll stub that too in a future libc.)  So,
-        # we'll just look for -pthreads and -lpthread first:
-
-        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
-        ;;
-esac
-
-if test x"$acx_pthread_ok" = xno; then
-for flag in $acx_pthread_flags; do
-
-        case $flag in
-                none)
-                AC_MSG_CHECKING([whether pthreads work without any flags])
-                ;;
-
-                -*)
-                AC_MSG_CHECKING([whether pthreads work with $flag])
-                PTHREAD_CFLAGS="$flag"
-                ;;
-
-		pthread-config)
-		AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
-		if test x"$acx_pthread_config" = xno; then continue; fi
-		PTHREAD_CFLAGS="`pthread-config --cflags`"
-		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
-		;;
-
-                *)
-                AC_MSG_CHECKING([for the pthreads library -l$flag])
-                PTHREAD_LIBS="-l$flag"
-                ;;
-        esac
-
-        save_LIBS="$LIBS"
-        save_CFLAGS="$CFLAGS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Check for various functions.  We must include pthread.h,
-        # since some functions may be macros.  (On the Sequent, we
-        # need a special flag -Kthread to make this header compile.)
-        # We check for pthread_join because it is in -lpthread on IRIX
-        # while pthread_create is in libc.  We check for pthread_attr_init
-        # due to DEC craziness with -lpthreads.  We check for
-        # pthread_cleanup_push because it is one of the few pthread
-        # functions on Solaris that doesn't have a non-functional libc stub.
-        # We try pthread_create on general principles.
-        AC_TRY_LINK([#include <pthread.h>],
-                    [pthread_t th; pthread_join(th, 0);
-                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
-                     pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-                    [acx_pthread_ok=yes])
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-
-        AC_MSG_RESULT($acx_pthread_ok)
-        if test "x$acx_pthread_ok" = xyes; then
-                break;
-        fi
-
-        PTHREAD_LIBS=""
-        PTHREAD_CFLAGS=""
-done
-fi
-
-# Various other checks:
-if test "x$acx_pthread_ok" = xyes; then
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        save_CFLAGS="$CFLAGS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-
-        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
-	AC_MSG_CHECKING([for joinable pthread attribute])
-	attr_name=unknown
-	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
-	    AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
-                        [attr_name=$attr; break])
-	done
-        AC_MSG_RESULT($attr_name)
-        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
-            AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
-                               [Define to necessary symbol if this constant
-                                uses a non-standard name on your system.])
-        fi
-
-        AC_MSG_CHECKING([if more special flags are required for pthreads])
-        flag=no
-        case "${host_cpu}-${host_os}" in
-            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
-            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
-        esac
-        AC_MSG_RESULT(${flag})
-        if test "x$flag" != xno; then
-            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
-        fi
-
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
-        # More AIX lossage: must compile with xlc_r or cc_r
-	if test x"$GCC" != xyes; then
-          AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
-        else
-          PTHREAD_CC=$CC
-	fi
-
-	# The next part tries to detect GCC inconsistency with -shared on some
-	# architectures and systems. The problem is that in certain
-	# configurations, when -shared is specified, GCC "forgets" to
-	# internally use various flags which are still necessary.
-	
-	#
-	# Prepare the flags
-	#
-	save_CFLAGS="$CFLAGS"
-	save_LIBS="$LIBS"
-	save_CC="$CC"
-	
-	# Try with the flags determined by the earlier checks.
-	#
-	# -Wl,-z,defs forces link-time symbol resolution, so that the
-	# linking checks with -shared actually have any value
-	#
-	# FIXME: -fPIC is required for -shared on many architectures,
-	# so we specify it here, but the right way would probably be to
-	# properly detect whether it is actually required.
-	CFLAGS="-shared -fPIC -Wl,-z,defs $CFLAGS $PTHREAD_CFLAGS"
-	LIBS="$PTHREAD_LIBS $LIBS"
-	CC="$PTHREAD_CC"
-	
-	# In order not to create several levels of indentation, we test
-	# the value of "$done" until we find the cure or run out of ideas.
-	done="no"
-	
-	# First, make sure the CFLAGS we added are actually accepted by our
-	# compiler.  If not (and OS X's ld, for instance, does not accept -z),
-	# then we can't do this test.
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether to check for GCC pthread/shared inconsistencies])
-	   AC_TRY_LINK(,, , [done=yes])
-	
-	   if test "x$done" = xyes ; then
-	      AC_MSG_RESULT([no])
-	   else
-	      AC_MSG_RESULT([yes])
-	   fi
-	fi
-	
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -pthread is sufficient with -shared])
-	   AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes])
-	   
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	
-	#
-	# Linux gcc on some architectures such as mips/mipsel forgets
-	# about -lpthread
-	#
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -lpthread fixes that])
-	   LIBS="-lpthread $PTHREAD_LIBS $save_LIBS"
-	   AC_TRY_LINK([#include <pthread.h>],
-	      [pthread_t th; pthread_join(th, 0);
-	      pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	      pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	      [done=yes])
-	
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	      PTHREAD_LIBS="-lpthread $PTHREAD_LIBS"
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	#
-	# FreeBSD 4.10 gcc forgets to use -lc_r instead of -lc
-	#
-	if test x"$done" = xno; then
-	   AC_MSG_CHECKING([whether -lc_r fixes that])
-	   LIBS="-lc_r $PTHREAD_LIBS $save_LIBS"
-	   AC_TRY_LINK([#include <pthread.h>],
-	       [pthread_t th; pthread_join(th, 0);
-	        pthread_attr_init(0); pthread_cleanup_push(0, 0);
-	        pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
-	       [done=yes])
-	
-	   if test "x$done" = xyes; then
-	      AC_MSG_RESULT([yes])
-	      PTHREAD_LIBS="-lc_r $PTHREAD_LIBS"
-	   else
-	      AC_MSG_RESULT([no])
-	   fi
-	fi
-	if test x"$done" = xno; then
-	   # OK, we have run out of ideas
-	   AC_MSG_WARN([Impossible to determine how to use pthreads with shared libraries])
-	
-	   # so it's not safe to assume that we may use pthreads
-	   acx_pthread_ok=no
-	fi
-	
-	CFLAGS="$save_CFLAGS"
-	LIBS="$save_LIBS"
-	CC="$save_CC"
-else
-        PTHREAD_CC="$CC"
-fi
-
-AC_SUBST(PTHREAD_LIBS)
-AC_SUBST(PTHREAD_CFLAGS)
-AC_SUBST(PTHREAD_CC)
-
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$acx_pthread_ok" = xyes; then
-        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
-        :
-else
-        acx_pthread_ok=no
-        $2
-fi
-AC_LANG_RESTORE
-])dnl ACX_PTHREAD
diff --git a/packages/deb/changelog b/packages/deb/changelog
index 6b9682f..733358c 100644
--- a/packages/deb/changelog
+++ b/packages/deb/changelog
@@ -1,3 +1,18 @@
+open-vcdiff (0.2-1) unstable; urgency=low
+
+  * Fix problems found on OpenBSD platform.
+    * Issue #1: vcdiff command-line executable crashes on startup.
+      This was a problem with the stub intended to replace pthread_once if the
+      package was not linked with the pthreads library.  Simplify gflags.cc to
+      assume single-threaded execution.
+    * Issue #2: Unit test blockhash_test fails.
+      Define VCDIFF_USE_BLOCK_COMPARE_WORDS for BSD platforms to ensure that
+      the most efficient version of memcmp is used in the encoder's inner loop.
+  * Fix compilation warnings in gtest-filepath.cc: "warning: missing
+    initializer for member 'stat::...'"
+
+ -- Google Inc. <opensource@google.com>  Tue,  2 Sep 2008 09:20:20 -0700
+
 open-vcdiff (0.1-1) unstable; urgency=low
 
   * Initial release.
diff --git a/packages/deb/rules b/packages/deb/rules
index afe0642..a3a6d7c 100755
--- a/packages/deb/rules
+++ b/packages/deb/rules
@@ -103,7 +103,7 @@ binary-arch: build install
 		      $(CURDIR)/debian/tmp/usr/share/man/man1/vcdiff.1
 	dh_link
 	dh_strip
-	dh_compress $(CURDIR)/debian/tmp/usr/share/doc/open-vcdiff-0.1/ChangeLog
+	dh_compress
 	dh_fixperms
 #	dh_perl
 #	dh_python
diff --git a/src/config.h.in b/src/config.h.in
index 004b792..1694022 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -15,12 +15,6 @@
 /* Define to 1 if you have the `gettimeofday' function. */
 #undef HAVE_GETTIMEOFDAY
 
-/* Define to 1 if you have the `InitializeCriticalSection' function. */
-#undef HAVE_INITIALIZECRITICALSECTION
-
-/* Define to 1 if you have the `InterlockedCompareExchange' function. */
-#undef HAVE_INTERLOCKEDCOMPAREEXCHANGE
-
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
@@ -39,9 +33,6 @@
 /* Define to 1 if you have the `posix_memalign' function. */
 #undef HAVE_POSIX_MEMALIGN
 
-/* Define if you have POSIX threads libraries and header files. */
-#undef HAVE_PTHREAD
-
 /* Define to 1 if you have the `QueryPerformanceCounter' function. */
 #undef HAVE_QUERYPERFORMANCECOUNTER
 
@@ -111,10 +102,6 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
-/* Define to necessary symbol if this constant uses a non-standard name on
-   your system. */
-#undef PTHREAD_CREATE_JOINABLE
-
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
diff --git a/src/gflags.cc b/src/gflags.cc
index be6f661..7c3a0fd 100644
--- a/src/gflags.cc
+++ b/src/gflags.cc
@@ -104,12 +104,6 @@
 #ifdef HAVE_FNMATCH_H
 #include <fnmatch.h>
 #endif  // HAVE_FNMATCH_H
-#ifdef HAVE_PTHREAD
-#include <pthread.h>
-#endif  // HAVE_PTHREAD
-#ifdef HAVE_WINDOWS_H
-#include <windows.h>
-#endif  // HAVE_WINDOWS_H
 #include <iostream>    // for cerr
 #include <string>
 #include <map>
@@ -648,20 +642,10 @@ class FlagRegistry {
   typedef map<const void*, CommandLineFlag*> FlagPtrMap;
   FlagPtrMap flags_by_ptr_;
 
-#if defined(HAVE_PTHREAD)
-  pthread_mutex_t lock_;
-#elif defined(HAVE_INITIALIZECRITICALSECTION)
-  CRITICAL_SECTION lock_;
-#else
-#error "Need to define a mutual-exclusion object for your system"
-#endif
-
   static FlagRegistry* global_registry_;   // a singleton registry
 
   // If global_registry_ has not yet been initialized, this function allocates
-  // a new global registry.  If InterlockedCompareExchange() is available, it
-  // does so in a thread-safe manner; otherwise, single-threaded execution (or
-  // serialization using pthread_once) is assumed.
+  // a new global registry.  Single-threaded execution is assumed.
   static void InitGlobalRegistry();
 
   // Disallow
@@ -669,97 +653,25 @@ class FlagRegistry {
   FlagRegistry& operator=(const FlagRegistry&);
 };
 
+// Single-threaded execution is assumed.
+inline FlagRegistry::FlagRegistry() { }
+inline FlagRegistry::~FlagRegistry() { }
 
-#if defined(HAVE_PTHREAD)
-// The pthread.h header is available.  The pthreads library may or may not be
-// linked in with -lpthread.  If that library is not linked in, then it is
-// assumed that all operations involving command-line flags will be
-// single-threaded.
-
-#define SAFE_PTHREAD(fncall)  do { if ((fncall) != 0) abort(); } while (0)
-
-inline FlagRegistry::FlagRegistry() {
-  SAFE_PTHREAD(pthread_mutex_init(&lock_, NULL));
-}
-inline FlagRegistry::~FlagRegistry() {
-  SAFE_PTHREAD(pthread_mutex_destroy(&lock_));
-}
-
-inline void FlagRegistry::Lock() {
-  SAFE_PTHREAD(pthread_mutex_lock(&lock_));
-}
-inline void FlagRegistry::Unlock() {
-  SAFE_PTHREAD(pthread_mutex_unlock(&lock_));
-}
-
-// We want to use pthread_once here, for safety, but have to worry about
-// whether libpthread is linked in or not.  We declare a weak version of
-// the function, so we'll always compile (if the weak version is the only
-// one that ends up existing, then pthread_once will be equal to NULL).
-#ifdef HAVE___ATTRIBUTE__
-  // __THROW is defined in glibc systems.  It means, counter-intuitively,
-  // "This function will never throw an exception."  It's an optional
-  // optimization tool, but we may need to use it to match glibc prototypes.
-# ifndef __THROW     // I guess we're not on a glibc system
-#   define __THROW   // __THROW is just an optimization, so ok to make it ""
-# endif
-extern "C" int pthread_once(pthread_once_t *, void (*)(void))
-    __THROW __attribute__((weak));
-#endif
-
-FlagRegistry* FlagRegistry::GlobalRegistry() {
-  if (pthread_once) {   // means we're linked with -lpthread
-    static pthread_once_t global_registry_once = PTHREAD_ONCE_INIT;
-    pthread_once(&global_registry_once, &InitGlobalRegistry);
-  } else {
-    // Assume single-threaded execution.
-    InitGlobalRegistry();
-  }
-  return global_registry_;
-}
-
-#elif defined(HAVE_INITIALIZECRITICALSECTION)
-// The Windows version of the thread-safe code uses EnterCriticalSection and
-// LeaveCriticalSection to serialize access to the registry.
-
-#ifndef HAVE_INTERLOCKEDCOMPAREEXCHANGE
-// InitializeCriticalSection is available, but InterlockedCompareExchange
-// is not.  On a Windows system both should be available, and on Unix, neither
-// one should be available.
-#error "Please check settings for HAVE_INTERLOCKED... and HAVE_INITIALIZE..."
-#endif  // !HAVE_INTERLOCKEDCOMPAREEXCHANGE
-
-inline FlagRegistry::FlagRegistry() { InitializeCriticalSection(&lock_); }
-inline FlagRegistry::~FlagRegistry() { DeleteCriticalSection(&lock_); }
-
-inline void FlagRegistry::Lock() { EnterCriticalSection(&lock_); }
-inline void FlagRegistry::Unlock() { LeaveCriticalSection(&lock_); }
+inline void FlagRegistry::Lock() { }
+inline void FlagRegistry::Unlock() { }
 
 FlagRegistry* FlagRegistry::GlobalRegistry() {
   InitGlobalRegistry();
   return global_registry_;
 }
-#endif  // !HAVE_PTHREAD && HAVE_INITIALIZECRITICALSECTION
 
 // Get the singleton FlagRegistry object
 FlagRegistry* FlagRegistry::global_registry_ = NULL;
 
 void FlagRegistry::InitGlobalRegistry() {
+  // Assume single-threaded execution.
   if (!global_registry_) {
-#ifdef HAVE_INTERLOCKEDCOMPAREEXCHANGE
-    FlagRegistry* new_global_registry = new FlagRegistry;
-    if (InterlockedCompareExchangePointer(
-            reinterpret_cast<void* volatile *>(&global_registry_),
-            new_global_registry,
-            NULL) != NULL) {
-      // Some other thread initialized global_registry_ first.
-      delete new_global_registry;
-    }
-#else  // !HAVE_INTERLOCKEDCOMPAREEXCHANGE
-    // Assume single-threaded execution, or else that this function call was
-    // serialized using pthread_once.
     global_registry_ = new FlagRegistry;
-#endif  // HAVE_INTERLOCKEDCOMPAREEXCHANGE
   }
 }
 
diff --git a/src/gtest/gtest-filepath.cc b/src/gtest/gtest-filepath.cc
index 2fba96e..37e3759 100644
--- a/src/gtest/gtest-filepath.cc
+++ b/src/gtest/gtest-filepath.cc
@@ -112,10 +112,10 @@ FilePath FilePath::MakeFileName(const FilePath& directory,
 // either a file, directory, or whatever.
 bool FilePath::FileOrDirectoryExists() const {
 #ifdef GTEST_OS_WINDOWS
-  struct _stat file_stat = {};
+  struct _stat file_stat;
   return _stat(pathname_.c_str(), &file_stat) == 0;
 #else
-  struct stat file_stat = {};
+  struct stat file_stat;
   return stat(pathname_.c_str(), &file_stat) == 0;
 #endif  // GTEST_OS_WINDOWS
 }
@@ -126,11 +126,13 @@ bool FilePath::DirectoryExists() const {
   bool result = false;
 #ifdef _WIN32
   FilePath removed_sep(this->RemoveTrailingPathSeparator());
-  struct _stat file_stat = {};
+  struct _stat file_stat;
+  file_stat.st_mode = 0;
   result = _stat(removed_sep.c_str(), &file_stat) == 0 &&
       (_S_IFDIR & file_stat.st_mode) != 0;
 #else
-  struct stat file_stat = {};
+  struct stat file_stat;
+  file_stat.st_mode = 0;
   result = stat(pathname_.c_str(), &file_stat) == 0 &&
       S_ISDIR(file_stat.st_mode);
 #endif  // _WIN32
diff --git a/vsprojects/config.h b/vsprojects/config.h
index 047ad75..4062437 100644
--- a/vsprojects/config.h
+++ b/vsprojects/config.h
@@ -20,12 +20,6 @@
 #ifndef OPEN_VCDIFF_VSPROJECTS_CONFIG_H_
 #define OPEN_VCDIFF_VSPROJECTS_CONFIG_H_
 
-/* Define to 1 if you have the `InitializeCriticalSection' function. */
-#define HAVE_INITIALIZECRITICALSECTION 1
-
-/* Define to 1 if you have the `InterlockedCompareExchange' function. */
-#define HAVE_INTERLOCKEDCOMPAREEXCHANGE 1
-
 /* Define to 1 if you have the `QueryPerformanceCounter' function. */
 #define HAVE_QUERYPERFORMANCECOUNTER 1
 
@@ -41,7 +35,6 @@
 /* Define to 1 if the system has the type `__int16'. */
 #define HAVE___INT16 1
 
-
 /* Name of package */
 #define PACKAGE "open-vcdiff"
 
@@ -52,19 +45,19 @@
 #define PACKAGE_NAME "open-vcdiff"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "open-vcdiff 0.1"
+#define PACKAGE_STRING "open-vcdiff 0.2"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "open-vcdiff"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "0.1"
+#define PACKAGE_VERSION "0.2"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1
 
 /* Version number of package */
-#define VERSION "0.1"
+#define VERSION "0.2"
 
 // These functions have different names, but the same behavior,
 // for Visual Studio.