Update libxml to 2.7.7.

third_party/libxml/configure.in

Index: third_party/libxml/configure.in
diff --git a/third_party/libxml/configure.in b/third_party/libxml/configure.in
index 8fc76e55102b0ef0223677646f6049bb3a21da91..17c11cde6821193c97474f26464b85804c9013e5 100644
--- a/third_party/libxml/configure.in
+++ b/third_party/libxml/configure.in
@@ -1,11 +1,12 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(entities.c)
 AM_CONFIG_HEADER(config.h)
+AC_CONFIG_MACRO_DIR([m4])
 AC_CANONICAL_HOST
 
 LIBXML_MAJOR_VERSION=2
-LIBXML_MINOR_VERSION=6
-LIBXML_MICRO_VERSION=32
+LIBXML_MINOR_VERSION=7
+LIBXML_MICRO_VERSION=7
 LIBXML_MICRO_VERSION_SUFFIX=
 LIBXML_VERSION=$LIBXML_MAJOR_VERSION.$LIBXML_MINOR_VERSION.$LIBXML_MICRO_VERSION$LIBXML_MICRO_VERSION_SUFFIX
 LIBXML_VERSION_INFO=`expr $LIBXML_MAJOR_VERSION + $LIBXML_MINOR_VERSION`:$LIBXML_MICRO_VERSION:$LIBXML_MINOR_VERSION
@@ -26,6 +27,14 @@ else if test -d .svn ; then
   then
       LIBXML_VERSION_EXTRA="-SVN$extra"
   fi
+else if test -d .git ; then
+  extra=`git describe | sed 's+LIBXML[[0-9.]]*-++'`
+  echo extra=$extra
+  if test "$extra" != ""
+  then
+      LIBXML_VERSION_EXTRA="-GIT$extra"
+  fi
+fi
 fi
 fi
 AC_SUBST(LIBXML_MAJOR_VERSION)
@@ -60,6 +69,22 @@ AC_LIBTOOL_WIN32_DLL
 AM_PROG_LIBTOOL
 
 dnl
+dnl if the system support linker version scripts for symbol versioning
+dnl then add it
+dnl
+VERSION_SCRIPT_FLAGS=
+# lt_cv_prog_gnu_ld is from libtool 2.+
+if test "$lt_cv_prog_gnu_ld" = yes; then
+  VERSION_SCRIPT_FLAGS=-Wl,--version-script=
+else
+  case $host in
+  *-*-sunos*) VERSION_SCRIPT_FLAGS="-Wl,-M -Wl,";;
+  esac
+fi
+AC_SUBST(VERSION_SCRIPT_FLAGS)
+AM_CONDITIONAL([USE_VERSION_SCRIPT], [test -n "$VERSION_SCRIPT_FLAGS"])
+
+dnl
 dnl We process the AC_ARG_WITH first so that later we can modify
 dnl some of them to try to prevent impossible combinations.  This
 dnl also allows up so alphabetize the choices
@@ -163,6 +188,12 @@ AC_ARG_WITH(zlib,
     LDFLAGS="${LDFLAGS} -L$withval/lib"
   fi
 ])
+AC_ARG_WITH(coverage,
+[  --with-coverage         build for code coverage with GCC (off)])
+
+AC_ARG_ENABLE(rebuild-docs,
+[  --enable-rebuild-docs[[=yes/no]]  rebuild some generated docs [[default=yes]]])
+AM_CONDITIONAL([REBUILD_DOCS], [test "$enable_rebuild_docs" = "no"])
 
 dnl
 dnl hard dependancies on options
@@ -376,6 +407,8 @@ AC_CHECK_HEADERS([malloc.h])
 AC_CHECK_HEADERS([stdarg.h])
 AC_CHECK_HEADERS([sys/stat.h])
 AC_CHECK_HEADERS([sys/types.h])
+AC_CHECK_HEADERS([stdint.h])
+AC_CHECK_HEADERS([inttypes.h.h])
 AC_CHECK_HEADERS([time.h])
 AC_CHECK_HEADERS([ansidecl.h])
 AC_CHECK_HEADERS([ieeefp.h])
@@ -406,6 +439,7 @@ AC_CHECK_HEADERS([arpa/inet.h], [], [],
 AC_CHECK_HEADERS([netdb.h])
 AC_CHECK_HEADERS([sys/time.h])
 AC_CHECK_HEADERS([sys/select.h])
+AC_CHECK_HEADERS([poll.h])
 AC_CHECK_HEADERS([sys/mman.h])
 AC_CHECK_HEADERS([sys/timeb.h])
 AC_CHECK_HEADERS([signal.h])
@@ -465,7 +499,7 @@ fi
 
 dnl Checks for inet libraries:
 AC_SEARCH_LIBS(gethostent, [nsl])
-AC_SEARCH_LIBS(setsockopt, [socket net])
+AC_SEARCH_LIBS(setsockopt, [socket net network])
 AC_SEARCH_LIBS(connect, [inet])
 
 dnl Determine what socket length (socklen_t) data type is
@@ -713,6 +747,7 @@ if test "$with_python" != "no" ; then
 		    PYTHON_SITE_PACKAGES=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_lib()"`
 	    fi
 	fi
+	PYTHON_LIBS=`python$PYTHON_VERSION-config --ldflags`
     fi
     if test "$with_python" != ""
     then
@@ -732,6 +767,7 @@ else
 fi
 AC_SUBST(pythondir)
 AC_SUBST(PYTHON_SUBDIR)
+AC_SUBST(PYTHON_LIBS)
 
 dnl check for dso support
 WITH_MODULES=0
@@ -747,6 +783,10 @@ if test "$with_modules" != "no" ; then
     AC_DEFINE([HAVE_DLOPEN], [], [Have dlopen based dso])
   ])
   ;;
+  *-*-mingw*)
+  MODULE_EXTENSION=".dll"
+  WITH_MODULES=1
+  ;;
   *)
   AC_CHECK_FUNC(shl_load, libxml_have_shl_load=yes, [
     AC_CHECK_LIB(dld, shl_load, [
@@ -854,17 +894,21 @@ if test "$with_threads" = "no" ; then
     echo Disabling multithreaded support
 else
     echo Enabling multithreaded support
-
-    AC_CHECK_HEADER(pthread.h,
-	AC_CHECK_LIB(pthread, pthread_join,[
-	   THREAD_LIBS="-lpthread"
-	   AC_DEFINE([HAVE_LIBPTHREAD], [], [Define if pthread library is there (-lpthread)])
-	   AC_DEFINE([HAVE_PTHREAD_H], [], [Define if <pthread.h> is there])
-	   WITH_THREADS="1"]))
+    dnl Use pthread by default
+    if test "$with_threads" = "pthread" || test "$with_threads" = "" || test "$with_threads" = "yes" ; then
+        AC_CHECK_HEADER(pthread.h,
+	    AC_CHECK_LIB(pthread, pthread_join,[
+	       THREAD_LIBS="-lpthread"
+	       AC_DEFINE([HAVE_LIBPTHREAD], [], [Define if pthread library is there (-lpthread)])
+	       AC_DEFINE([HAVE_PTHREAD_H], [], [Define if <pthread.h> is there])
+	       WITH_THREADS="1"]))
+    fi
     case $host_os in
-       *mingw32*) WITH_THREADS="1"
-           THREADS_W32="Win32"
-	   THREAD_CFLAGS="$THREAD_CFLAGS -DHAVE_WIN32_THREADS"
+       *mingw32*) if test "$THREAD_LIBS" != "-lpthread"; then
+               WITH_THREADS="1"
+               THREADS_W32="Win32"
+	       THREAD_CFLAGS="$THREAD_CFLAGS -DHAVE_WIN32_THREADS"
+           fi
        ;;
        *cygwin*) THREAD_LIBS=""
        ;;
@@ -882,7 +926,7 @@ else
 		       THREAD_LIBS=""
 		       BASE_THREAD_LIBS="-lpthread"
 		   else
-		   if expr ${GCC_MAJOR} \> 3 > /dev/null 
+		   if expr ${GCC_MAJOR} \> 3 > /dev/null
 		   then
 		       THREAD_LIBS=""
 		       BASE_THREAD_LIBS="-lpthread"
@@ -1253,6 +1297,8 @@ case "$host" in
 	;;
 	*beos*) M_LIBS=""
 	;;
+        *haiku*) M_LIBS=""
+        ;;
 	*) M_LIBS="-lm"
 	;;
 esac
@@ -1371,8 +1417,18 @@ AC_SUBST(WIN32_EXTRA_LDFLAGS)
 AC_SUBST(CYGWIN_EXTRA_LDFLAGS)
 AC_SUBST(CYGWIN_EXTRA_PYTHON_LIBADD)
 
+if test "$with_coverage" = "yes" -a "${GCC}" = "yes"
+then
+    echo Enabling code coverage for GCC
+    CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
+    LDFLAGS="$LDFLAGS -fprofile-arcs -ftest-coverage"
+else
+    echo Disabling code coverage for GCC
+fi
+
 AC_SUBST(CPPFLAGS)
 AC_SUBST(CFLAGS)
+AC_SUBST(LDFLAGS)
 AC_SUBST(XML_CFLAGS)
 
 AC_SUBST(XML_LIBDIR)