configure.ac

dnl Process this file with autoconf to produce a configure script.
AC_PREREQ([2.63])

m4_define([MAJOR_VERSION], 2)
m4_define([MINOR_VERSION], 10)
m4_define([MICRO_VERSION], 0)

AC_INIT([libxml2],[MAJOR_VERSION.MINOR_VERSION.MICRO_VERSION])
AC_CONFIG_SRCDIR([entities.c])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
AC_CANONICAL_HOST

LIBXML_MAJOR_VERSION=MAJOR_VERSION
LIBXML_MINOR_VERSION=MINOR_VERSION
LIBXML_MICRO_VERSION=MICRO_VERSION
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

LIBXML_VERSION_NUMBER=`expr $LIBXML_MAJOR_VERSION \* 10000 + $LIBXML_MINOR_VERSION \* 100 + $LIBXML_MICRO_VERSION`

if test -d .git ; then
  extra=`git describe 2>/dev/null | sed 's+LIBXML[[0-9.]]*-++'`
  echo extra=$extra
  if test "$extra" != ""
  then
      LIBXML_VERSION_EXTRA="-GIT$extra"
  fi
fi

AC_SUBST(LIBXML_MAJOR_VERSION)
AC_SUBST(LIBXML_MINOR_VERSION)
AC_SUBST(LIBXML_MICRO_VERSION)
AC_SUBST(LIBXML_VERSION)
AC_SUBST(LIBXML_VERSION_INFO)
AC_SUBST(LIBXML_VERSION_NUMBER)
AC_SUBST(LIBXML_VERSION_EXTRA)

VERSION=${LIBXML_VERSION}

AM_INIT_AUTOMAKE([1.15 foreign no-dist-gzip dist-xz])
AM_MAINTAINER_MODE([enable])
AM_SILENT_RULES([yes])

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MKDIR_P
AC_PROG_CPP
AC_PATH_PROG(MV, mv, /bin/mv)
AC_PATH_PROG(TAR, tar, /bin/tar)
AC_PATH_PROG(PERL, perl, /usr/bin/perl)
AC_PATH_PROG(WGET, wget, /usr/bin/wget)
AC_PATH_PROG(XMLLINT, xmllint, /usr/bin/xmllint)
AC_PATH_PROG(XSLTPROC, xsltproc, /usr/bin/xsltproc)
PKG_PROG_PKG_CONFIG

LT_INIT([disable-static])
LT_LIB_M

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
dnl

dnl
dnl zlib option might change flags, so we save them initially
dnl
_cppflags="${CPPFLAGS}"
_libs="${LIBS}"

AC_ARG_WITH(c14n,
[  --with-c14n             add the Canonicalization support (on)])
AC_ARG_WITH(catalog,
[  --with-catalog          add the Catalog support (on)])
AC_ARG_WITH(debug,
[  --with-debug            add the debugging module (on)])
AC_ARG_WITH(fexceptions,
[  --with-fexceptions      add GCC flag -fexceptions for C++ exceptions (off)])
AC_ARG_WITH(ftp,
[  --with-ftp              add the FTP support (off)])
AC_ARG_WITH(history,
[  --with-history          add history support to xmllint shell(off)])
AC_ARG_WITH(html,
[  --with-html             add the HTML support (on)])
AC_ARG_WITH(http,
[  --with-http             add the HTTP support (on)])
AC_ARG_WITH(iconv,
[  --with-iconv[[=DIR]]      add ICONV support (on)])
AC_ARG_WITH(icu,
[  --with-icu                add ICU support (off)])
AC_ARG_WITH(iso8859x,
[  --with-iso8859x         add ISO8859X support if no iconv (on)])
AC_ARG_WITH(legacy,
[  --with-legacy           add deprecated APIs for compatibility (off)])
AC_ARG_WITH(mem_debug,
[  --with-mem-debug        add the memory debugging module (off)])
AC_ARG_WITH(minimum,
[  --with-minimum          build a minimally sized library (off)])
AC_ARG_WITH(output,
[  --with-output           add the serialization support (on)])
AC_ARG_WITH(pattern,
[  --with-pattern          add the xmlPattern selection interface (on)])
AC_ARG_WITH(push,
[  --with-push             add the PUSH parser interfaces (on)])
AC_ARG_WITH(python,
[  --with-python           build Python bindings (on)])
AC_ARG_WITH(reader,
[  --with-reader           add the xmlReader parsing interface (on)])
AC_ARG_WITH(readline,
[  --with-readline=DIR     use readline in DIR],[
  if test "$withval" != "no" && test "$withval" != "yes"; then
    RDL_DIR=$withval
    CPPFLAGS="${CPPFLAGS} -I$withval/include"
    LDFLAGS="${LDFLAGS} -L$withval/lib"
  fi
])
AC_ARG_WITH(regexps,
[  --with-regexps          add Regular Expressions support (on)])
AC_ARG_WITH(run_debug,
[  --with-run-debug        add the runtime debugging module (off)])
AC_ARG_WITH(sax1,
[  --with-sax1             add the older SAX1 interface (on)])
AC_ARG_WITH(schemas,
[  --with-schemas          add Relax-NG and Schemas support (on)])
AC_ARG_WITH(schematron,
[  --with-schematron       add Schematron support (on)])
AC_ARG_WITH(threads,
[  --with-threads          add multithread support(on)])
AC_ARG_WITH(thread-alloc,
[  --with-thread-alloc     add per-thread memory(off)])
AC_ARG_WITH(tree,
[  --with-tree             add the DOM like tree manipulation APIs (on)])
AC_ARG_WITH(valid,
[  --with-valid            add the DTD validation support (on)])
AC_ARG_WITH(writer,
[  --with-writer           add the xmlWriter saving interface (on)])
AC_ARG_WITH(xinclude,
[  --with-xinclude         add the XInclude support (on)])
AC_ARG_WITH(xpath,
[  --with-xpath            add the XPATH support (on)])
AC_ARG_WITH(xptr,
[  --with-xptr             add the XPointer support (on)])
AC_ARG_WITH(xptr-locs,
[  --with-xptr-locs        add support for XPointer locations (off)])
AC_ARG_WITH(modules,
[  --with-modules          add the dynamic modules support (on)])
AC_ARG_WITH(zlib,
[  --with-zlib[[=DIR]]       use libz in DIR],[
  if test "$withval" != "no" && test "$withval" != "yes"; then
    Z_DIR=$withval
    CPPFLAGS="${CPPFLAGS} -I$withval/include"
    LDFLAGS="${LDFLAGS} -L$withval/lib"
  fi
])
AC_ARG_WITH(lzma,
[  --with-lzma[[=DIR]]       use liblzma in DIR],[
  if test "$withval" != "no" && test "$withval" != "yes"; then
    LZMA_DIR=$withval
    CPPFLAGS="${CPPFLAGS} -I$withval/include"
    LDFLAGS="${LDFLAGS} -L$withval/lib"
  fi
])
AC_ARG_WITH(coverage,
[  --with-coverage         build for code coverage with GCC (off)])

dnl
dnl hard dependencies on options
dnl
if test "$with_schemas" = "yes"
then
    with_pattern=yes
    with_regexps=yes
fi
if test "$with_schematron" = "yes"
then
    with_pattern=yes
    with_tree=yes
    with_xpath=yes
fi
if test "$with_reader" = "yes"
then
    with_push=yes
fi
if test "$with_xptr_locs" = "yes"
then
    with_xptr=yes
fi
if test "$with_xptr" = "yes"
then
    with_xpath=yes
fi
dnl
dnl option to build a minimal libxml2 library
dnl
if test "$with_minimum" = "yes"
then
    echo "Configuring for a minimal library"
    if test "$with_c14n" = ""
    then
      with_c14n=no
    fi
    if test "$with_catalog" = ""
    then
      with_catalog=no
    fi
    echo So far so good!
    if test "$with_debug" = ""
    then
      with_debug=no
    fi
    if test "$with_fexceptions" = ""
    then
      with_fexceptions=no
    fi
    if test "$with_history" = ""
    then
      with_history=no
    fi
    if test "$with_html" = ""
    then
      with_html=no
    fi
    if test "$with_http" = ""
    then
      with_http=no 
    fi
    if test "$with_iconv" = ""
    then
      with_iconv=no
    fi
    if test "$with_iso8859x" = ""
    then
      with_iso8859x=no
    fi
    if test "$with_mem_debug" = ""
    then 
      with_mem_debug=no
    fi
    if test "$with_output" = ""
    then
      with_output=no
    fi
    if test "$with_pattern" = ""
    then
      with_pattern=no
    fi
    if test "$with_push" = ""
    then
      with_push=no
    fi
    if test "$with_python" = ""
    then
      with_python=no
    fi
    if test "$with_reader" = ""
    then
      with_reader=no
    fi
    if test "$with_readline" = ""
    then
      with_readline=no
    fi
    if test "$with_regexps" = ""
    then
      with_regexps=no
    fi
    if test "$with_run_debug" = ""
    then
      with_run_debug=no
    fi
    if test "$with_sax1" = ""
    then
      with_sax1=no
    fi
    if test "$with_schemas" = ""
    then
      with_schemas=no
    fi
    if test "$with_schematron" = ""
    then
      with_schematron=no
    fi
    if test "$with_threads" = ""
    then
      with_threads=no
    fi
    if test "$with_thread_alloc" = ""
    then
      with_thread_alloc=no
   fi
    if test "$with_tree" = ""
    then
      with_tree=no
    fi
    if test "$with_valid" = ""
    then
      with_valid=no
    fi
    if test "$with_writer" = ""
    then
      with_writer=no
    fi
    if test "$with_xinclude" = ""
    then
      with_xinclude=no
    fi
    if test "$with_xpath" = ""
    then
      with_xpath=no
    fi
    if test "$with_xptr" = ""
    then
      with_xptr=no
    fi
    if test "$with_zlib" = ""
    then
      with_zlib=no
    fi
    if test "$with_modules" = ""
    then
      with_modules=no
    fi
fi

echo Checking zlib

dnl Checks for zlib library.

WITH_ZLIB=0
if test "$with_zlib" = "no"; then
    echo "Disabling zlib compression support"
else
    # Don't run pkg-config if with_zlib contains a path.
    if test "x$Z_DIR" = "x"; then
        # Try pkg-config first so that static linking works.
        PKG_CHECK_MODULES([Z],[zlib],
            [WITH_ZLIB=1],
            [:])
    fi

    if test "$WITH_ZLIB" = "0"; then
        AC_CHECK_HEADERS(zlib.h,
            AC_CHECK_LIB(z, gzread,[
                WITH_ZLIB=1
                if test "x${Z_DIR}" != "x"; then
                    Z_CFLAGS="-I${Z_DIR}/include"
                    Z_LIBS="-L${Z_DIR}/lib -lz"
                    [case ${host} in
                        *-*-solaris*)
                            Z_LIBS="-L${Z_DIR}/lib -R${Z_DIR}/lib -lz"
                            ;;
                    esac]
                else
                    Z_LIBS="-lz"
                fi])
            )
    fi
fi

AC_SUBST(Z_CFLAGS)
AC_SUBST(Z_LIBS)
AC_SUBST(WITH_ZLIB)

echo Checking lzma

dnl Checks for lzma library.

WITH_LZMA=0
if test "$with_lzma" = "no"; then
    echo "Disabling lzma compression support"
else
    # Don't run pkg-config if with_lzma contains a path.
    if test "x$LZMA_DIR" = "x"; then
        # Try pkg-config first so that static linking works.
        PKG_CHECK_MODULES([LZMA],[liblzma],
            [WITH_LZMA=1],
            [:])
    fi

    # If pkg-config failed, fall back to AC_CHECK_LIB. This
    # will not pick up the necessary LIBS flags for liblzma's
    # private dependencies, though, so static linking may fail.
    if test "$WITH_LZMA" = "0"; then
        AC_CHECK_HEADERS(lzma.h,
            AC_CHECK_LIB(lzma, lzma_code,[
                WITH_LZMA=1
                if test "x${LZMA_DIR}" != "x"; then
                    LZMA_CFLAGS="-I${LZMA_DIR}/include"
                    LZMA_LIBS="-L${LZMA_DIR}/lib -llzma"
                else
                    LZMA_LIBS="-llzma"
                fi])
            )
    fi
fi

AC_SUBST(LZMA_CFLAGS)
AC_SUBST(LZMA_LIBS)
AC_SUBST(WITH_LZMA)

CPPFLAGS=${_cppflags}
LIBS=${_libs}

echo Checking headers

dnl Checks for header files.
AC_CHECK_HEADERS([fcntl.h])
AC_CHECK_HEADERS([unistd.h])
AC_CHECK_HEADERS([sys/stat.h])
AC_CHECK_HEADERS([sys/types.h])
AC_CHECK_HEADERS([stdint.h])
AC_CHECK_HEADERS([inttypes.h])
AC_CHECK_HEADERS([sys/socket.h], [], [],
[#if HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
])
AC_CHECK_HEADERS([netinet/in.h], [], [],
[#if HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
])
AC_CHECK_HEADERS([arpa/inet.h], [], [],
[#if HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
#if HAVE_ARPA_INET_H
# include <arpa/inet.h>
# endif
])
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([arpa/nameser.h], [], [],
[#if HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
])
AC_CHECK_HEADERS([resolv.h], [], [],
[#if HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
#if HAVE_NETINET_IN_H
# include <netinet/in.h>
# endif
#if HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
# endif
])
AC_CHECK_HEADERS([dl.h])
AC_CHECK_HEADERS([dlfcn.h])


echo Checking types

AC_TYPE_UINT32_T


echo Checking libraries

dnl Checks for library functions.
AC_CHECK_FUNCS(gettimeofday ftime)
AC_CHECK_FUNCS(stat)
AC_CHECK_FUNCS(rand_r)
AC_CHECK_FUNCS(isascii mmap munmap putenv)

AH_VERBATIM([HAVE_MUNMAP_AFTER],[/* mmap() is no good without munmap() */
#if defined(HAVE_MMAP) && !defined(HAVE_MUNMAP)
#  undef /**/ HAVE_MMAP
#endif])

dnl Checking for va_copy availability
AC_MSG_CHECKING([for va_copy])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
va_list ap1,ap2;]], [[va_copy(ap1,ap2);]])],
have_va_copy=yes,
have_va_copy=no)
AC_MSG_RESULT($have_va_copy)
if test x"$have_va_copy" = x"yes"; then
    AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available])
else
    AC_MSG_CHECKING([for __va_copy])
    AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
    va_list ap1,ap2;]], [[__va_copy(ap1,ap2);]])],
    have___va_copy=yes,
    have___va_copy=no)
    AC_MSG_RESULT($have___va_copy)
    if test x"$have___va_copy" = x"yes"; then
        AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available])
    fi
fi

dnl Checking whether va_list is an array type
AC_MSG_CHECKING([whether va_list is an array type])
AC_TRY_COMPILE2([
#include <stdarg.h>
void a(va_list * ap) {}],[
va_list ap1, ap2; a(&ap1); ap2 = (va_list) ap1],[
  AC_MSG_RESULT(no)],[
  AC_MSG_RESULT(yes)
  AC_DEFINE([VA_LIST_IS_ARRAY], [1],[Define if va_list is an array type])])

dnl Checks for inet libraries:
AC_SEARCH_LIBS(gethostent, [nsl])
AC_SEARCH_LIBS(setsockopt, [socket net network])
AC_SEARCH_LIBS(connect, [inet])

dnl Determine what socket length (socklen_t) data type is
AC_MSG_CHECKING([for type of socket length (socklen_t)])
AC_TRY_COMPILE2([
#include <stddef.h>
#include <sys/types.h>
#include <sys/socket.h>],[
(void)getsockopt (1, 1, 1, NULL, (socklen_t *)NULL)],[
  AC_MSG_RESULT(socklen_t *)
  XML_SOCKLEN_T=socklen_t],[
  AC_TRY_COMPILE2([
#include <stddef.h>
#include <sys/types.h>
#include <sys/socket.h>],[
(void)getsockopt (1, 1, 1, NULL, (size_t *)NULL)],[
    AC_MSG_RESULT(size_t *)
    XML_SOCKLEN_T=size_t],[
    AC_TRY_COMPILE2([
#include <stddef.h>
#include <sys/types.h>
#include <sys/socket.h>],[
(void)getsockopt (1, 1, 1, NULL, (int *)NULL)],[
      AC_MSG_RESULT(int *)
      XML_SOCKLEN_T=int],[
      AC_MSG_WARN(could not determine)
      XML_SOCKLEN_T="int"])])])
AC_DEFINE_UNQUOTED(XML_SOCKLEN_T, $XML_SOCKLEN_T, [Determine what socket length (socklen_t) data type is])

dnl Checking if gethostbyname() argument is const.
AC_MSG_CHECKING([for const gethostbyname() argument])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
    [[(void)gethostbyname((const char *)"");]])],
have_gethostbyname_const_arg=yes,
have_gethostbyname_const_arg=no)
AC_MSG_RESULT($have_gethostbyname_const_arg)
if test x"$have_gethostbyname_const_arg" = x"yes"; then
    AC_DEFINE([GETHOSTBYNAME_ARG_CAST], [],
      [Type cast for the gethostbyname() argument])
else
    AC_DEFINE([GETHOSTBYNAME_ARG_CAST], [(char *)],
      [Type cast for the gethostbyname() argument])
fi

dnl Checking if send() second argument is const.
AC_MSG_CHECKING([for const send() second argument])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
#include <sys/socket.h>]],
    [[(void)send(1,(const char *)"",1,1);]])],
have_send_const_arg2=yes,
have_send_const_arg2=no)
AC_MSG_RESULT($have_send_const_arg2)
if test x"$have_send_const_arg2" = x"yes"; then
    AC_DEFINE([SEND_ARG2_CAST], [],
      [Type cast for the send() function 2nd arg])
else
    AC_DEFINE([SEND_ARG2_CAST], [(char *)],
      [Type cast for the send() function 2nd arg])
fi

dnl Checking whether __attribute__((destructor)) is accepted by the compiler
AC_MSG_CHECKING([whether __attribute__((destructor)) is accepted])
AC_TRY_COMPILE2([
void __attribute__((destructor))
f(void) {}], [], [
  AC_MSG_RESULT(yes)
  AC_DEFINE([HAVE_ATTRIBUTE_DESTRUCTOR], [1],[Define if __attribute__((destructor)) is accepted])
  AC_DEFINE([ATTRIBUTE_DESTRUCTOR], [__attribute__((destructor))],[A form that will not confuse apibuild.py])],[
  AC_MSG_RESULT(no)])


dnl ***********************Checking for availability of IPv6*******************

AC_MSG_CHECKING([whether to enable IPv6])
AC_ARG_ENABLE(ipv6, [  --enable-ipv6[[=yes/no]]  enables compilation of IPv6 code [[default=yes]]],, enable_ipv6=yes)
if test "$with_minimum" = "yes"
then
    enable_ipv6=no
fi
if test $enable_ipv6 = yes; then
  have_ipv6=no
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#   include <sys/types.h>
#   include <sys/socket.h>
    ]], [[
    struct sockaddr_storage ss;
    socket(AF_INET6, SOCK_STREAM, 0)
    ]])],
    have_ipv6=yes,
    have_ipv6=no
  )
  AC_MSG_RESULT($have_ipv6)

  if test $have_ipv6 = yes; then
    AC_DEFINE([SUPPORT_IP6], [], [Support for IPv6])
    have_broken_ss_family=no

    dnl *********************************************************************
    dnl on some platforms (like AIX 5L), the structure sockaddr doesn't have
    dnl a ss_family member, but rather __ss_family. Let's detect that
    dnl and define the HAVE_BROKEN_SS_FAMILY when we are on one of these
    dnl platforms.  However, we should only do this if ss_family is not
    dnl present.
    dnl ********************************************************************
    AC_MSG_CHECKING([struct sockaddr::ss_family])
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#     include <sys/types.h>
#     include <sys/socket.h>
      ]], [[
      struct sockaddr_storage ss ;
      ss.ss_family = 0 ;
      ]])],
      have_ss_family=yes,
      have_ss_family=no
    )
    AC_MSG_RESULT($have_ss_family)
    if test x$have_ss_family = xno ; then
      AC_MSG_CHECKING([broken struct sockaddr::ss_family])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#       include <sys/types.h>
#       include <sys/socket.h>
        ]], [[
        struct sockaddr_storage ss ;
        ss.__ss_family = 0 ;
        ]])],
        have_broken_ss_family=yes,
        have_broken_ss_family=no
      )
      AC_MSG_RESULT($have_broken_ss_family)
      if test x$have_broken_ss_family = xyes ; then
        AC_DEFINE(HAVE_BROKEN_SS_FAMILY, [],
	  [Whether struct sockaddr::__ss_family exists]) 
        AC_DEFINE(ss_family, __ss_family,
	  [ss_family is not defined here, use __ss_family instead])
      else
        AC_MSG_WARN(ss_family and __ss_family not found)
      fi
    fi

    have_getaddrinfo=no
    AC_CHECK_FUNC(getaddrinfo, have_getaddrinfo=yes)
    if test $have_getaddrinfo != yes; then
      for lib in bsd socket inet; do
        AC_CHECK_LIB($lib, getaddrinfo, [LIBS="$LIBS -l$lib";have_getaddrinfo=yes;break])
      done
    fi

    if test $have_getaddrinfo = yes; then
      AC_DEFINE([HAVE_GETADDRINFO], [], [Define if getaddrinfo is there])
    fi
  fi
fi 

dnl ******************************End IPv6 checks******************************

XML_LIBDIR='-L${libdir}'
XML_INCLUDEDIR='-I${includedir}/libxml2'

dnl
dnl Extra flags
dnl
XML_CFLAGS=""
RDL_LIBS=""

dnl
dnl Workaround for native compilers
dnl  HP  : http://bugs.gnome.org/db/31/3163.html
dnl  DEC : Enable NaN/Inf
dnl
if test "${GCC}" != "yes" ; then
    case "${host}" in
          hppa*-*-hpux* )
	       EXTRA_CFLAGS="${EXTRA_CFLAGS} -Wp,-H30000"
	       ;;
          *-dec-osf* )
               EXTRA_CFLAGS="${EXTRA_CFLAGS} -ieee"
               ;;
	  alpha*-*-linux* )
	       EXTRA_CFLAGS="${EXTRA_CFLAGS} -ieee"
	       ;;
    esac
else
    if test "$with_fexceptions" = "yes"
    then
        #
	# Not activated by default because this inflates the code size
	# Used to allow propagation of C++ exceptions through the library
	#
	EXTRA_CFLAGS="${EXTRA_CFLAGS} -fexceptions"
    fi

    # warnings we'd like to see
    EXTRA_CFLAGS="${EXTRA_CFLAGS} -pedantic -Wall -Wextra -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Winline -Wredundant-decls"
    # warnings we'd like to suppress
    EXTRA_CFLAGS="${EXTRA_CFLAGS} -Wno-long-long -Wno-format-extra-args"
    case "${host}" in
          alpha*-*-linux* )
	       EXTRA_CFLAGS="${EXTRA_CFLAGS} -mieee"
	       ;;
	  alpha*-*-osf* )
	       EXTRA_CFLAGS="${EXTRA_CFLAGS} -mieee"
	       ;;
    esac
fi
case ${host} in
    *-*-solaris*)
        XML_LIBDIR="${XML_LIBDIR} -R${libdir}"
        ;;
    hppa*-hp-mpeix)
        NEED_TRIO=1
	;;
    *-*-mingw* | *-*-cygwin* | *-*-msvc* )
        # If the host is Windows, and shared libraries are disabled, we
        # need to add -DLIBXML_STATIC to EXTRA_CFLAGS in order for linking to
        # work properly (without it, xmlexports.h would force the use of
        # DLL imports, which obviously aren't present in a static
        # library).
        if test "x$enable_shared" = "xno"; then
            XML_CFLAGS="$XML_CFLAGS -DLIBXML_STATIC"
            EXTRA_CFLAGS="$EXTRA_CFLAGS -DLIBXML_STATIC"
        fi
        ;;
esac


dnl
dnl check for python
dnl

PYTHON_TESTS=
AS_IF([test "x$with_python" != "xno"], [
    AM_PATH_PYTHON
    PKG_CHECK_MODULES([PYTHON], [python-${PYTHON_VERSION}])
])
AM_CONDITIONAL([WITH_PYTHON], [test "x$with_python" != "xno"])

dnl check for dso support
WITH_MODULES=0

if test "$with_modules" != "no" ; then
 case "$host" in
  *-*-cygwin*)
  MODULE_EXTENSION=".dll"
  AC_CHECK_LIB(cygwin, dlopen, [
    WITH_MODULES=1
    MODULE_PLATFORM_LIBS=
    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, [
      MODULE_PLATFORM_LIBS="-ldld"
      libxml_have_shl_load=yes], [
      AC_CHECK_FUNC(dlopen, libxml_have_dlopen=yes, [
        AC_CHECK_LIB(dl, dlopen, [
          MODULE_PLATFORM_LIBS="-ldl"
          libxml_have_dlopen=yes])])])])

  if test "${libxml_have_shl_load}" = "yes"; then
    MODULE_EXTENSION=".sl"
    WITH_MODULES=1
    AC_DEFINE([HAVE_SHLLOAD], [], [Have shl_load based dso])
  fi
 
  if test "${libxml_have_dlopen}" = "yes"; then
    case "${host}" in
      *-*-hpux* )
	MODULE_EXTENSION=".sl"
	;;
      * )
	MODULE_EXTENSION=".so"
	;;
    esac

    WITH_MODULES=1
    AC_DEFINE([HAVE_DLOPEN], [], [Have dlopen based dso])
  fi
 ;;
 esac
fi

AC_SUBST(WITH_MODULES)
AC_SUBST(MODULE_PLATFORM_LIBS)
AC_SUBST(MODULE_EXTENSION)

dnl
dnl Check for trio string functions
dnl

if test "${NEED_TRIO}" = "1" ; then
    echo Adding trio library for string functions
    WITH_TRIO=1
else    
    WITH_TRIO=0
fi
AM_CONDITIONAL(WITH_TRIO_SOURCES, test "${NEED_TRIO}" = "1")
AC_SUBST(WITH_TRIO)

dnl
dnl Allow to enable/disable various pieces
dnl
echo Checking configuration requirements

dnl
dnl Thread-related stuff
dnl
THREAD_LIBS=""
BASE_THREAD_LIBS=""
WITH_THREADS=0
THREAD_CFLAGS=""
THREADS_W32=""
WITH_THREAD_ALLOC=0

if test "$with_threads" = "no" ; then
    echo Disabling multithreaded support
else
    echo Enabling multithreaded support

    dnl Default to native threads on Windows
    case $host_os in
       *mingw*) if test "$with_threads" != "pthread" && test "$with_threads" != "no"; then
               WITH_THREADS="1"
               THREADS_W32="1"
               THREAD_CFLAGS="$THREAD_CFLAGS -DHAVE_WIN32_THREADS"
           fi
       ;;
    esac

    dnl Use pthread by default in other cases
    if test -z "$THREADS_W32"; then
        if test "$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_PTHREAD_H], [], [Define if <pthread.h> is there])
                WITH_THREADS="1"]))
        fi
    fi

    case $host_os in
       *cygwin*) THREAD_LIBS=""
       ;;
       *beos*) WITH_THREADS="1"
	   THREAD_CFLAGS="$THREAD_CFLAGS -DHAVE_BEOS_THREADS"
       ;;
       *linux*)
           if test "${GCC}" = "yes" ; then
	       GCC_VERSION=`${CC} --version | head -1 | awk '{print $3}'`
	       GCC_MAJOR=`echo ${GCC_VERSION} | sed 's+\..*++'`
	       GCC_MEDIUM=`echo ${GCC_VERSION} | sed 's+[[0-9]]*\.++' | sed 's+\..*++'`
	       if test "${THREAD_LIBS}" = "-lpthread" ; then
	           if expr ${GCC_MEDIUM} \> 2 \& ${GCC_MAJOR} = 3 > /dev/null
		   then
		       THREAD_LIBS=""
		       BASE_THREAD_LIBS="-lpthread"
		   else
		   if expr ${GCC_MAJOR} \> 3 > /dev/null
		   then
		       THREAD_LIBS=""
		       BASE_THREAD_LIBS="-lpthread"
		   else
		       echo old GCC disabling weak symbols for pthread
		   fi
		   fi
	       fi
	   fi
       ;;
    esac
    if test "$WITH_THREADS" = "1" ; then
	THREAD_CFLAGS="$THREAD_CFLAGS -D_REENTRANT"
    fi
fi
if test "$with_thread_alloc" = "yes" && test "$WITH_THREADS" = "1" ; then
    WITH_THREAD_ALLOC=1
fi

AC_SUBST(THREAD_LIBS)
AC_SUBST(BASE_THREAD_LIBS)
AC_SUBST(WITH_THREADS)
AC_SUBST(THREAD_CFLAGS)
AC_SUBST(WITH_THREAD_ALLOC)
AM_CONDITIONAL([THREADS_W32],[test -n "$THREADS_W32"])

dnl
dnl xmllint shell history
dnl
if test "$with_history" = "yes" ; then
    echo Enabling xmllint shell history
    dnl check for terminal library. this is a very cool solution
    dnl from octave's configure.in
    unset tcap
    for termlib in ncurses curses termcap terminfo termlib; do
	AC_CHECK_LIB(${termlib}, tputs, [tcap="-l$termlib"])
	test -n "$tcap" && break
    done

    AC_CHECK_HEADER(readline/history.h,
	AC_CHECK_LIB(history, append_history,[
	   RDL_LIBS="-lhistory"
	   AC_DEFINE([HAVE_LIBHISTORY], [], [Define if history library is there (-lhistory)])]))
    AC_CHECK_HEADER(readline/readline.h,
	AC_CHECK_LIB(readline, readline,[
	   RDL_LIBS="-lreadline $RDL_LIBS $tcap"
	   AC_DEFINE([HAVE_LIBREADLINE], [], [Define if readline library is there (-lreadline)])], , $tcap))
    if test -n "$RDL_DIR" && test -n "$RDL_LIBS"; then
	CPPFLAGS="$CPPFLAGS -I${RDL_DIR}/include"
	RDL_LIBS="-L${RDL_DIR}/lib $RDL_LIBS"
    fi
fi

dnl
dnl Tree functions
dnl
if test "$with_tree" = "no" ; then
    echo Disabling DOM like tree manipulation APIs
    WITH_TREE=0
else    
    WITH_TREE=1
fi
AC_SUBST(WITH_TREE)

if test "$with_ftp" != "yes" ; then
    echo Disabling FTP support
    WITH_FTP=0
    FTP_OBJ=
else    
    WITH_FTP=1
    FTP_OBJ=nanoftp.o
fi
AC_SUBST(WITH_FTP)
AC_SUBST(FTP_OBJ)

if test "$with_http" = "no" ; then
    echo Disabling HTTP support
    WITH_HTTP=0
    HTTP_OBJ=
else    
    WITH_HTTP=1
    HTTP_OBJ=nanohttp.o
fi
AC_SUBST(WITH_HTTP)
AC_SUBST(HTTP_OBJ)

if test "$with_legacy" != "yes" ; then
    echo Disabling deprecated APIs
    WITH_LEGACY=0
else    
    WITH_LEGACY=1
fi
AC_SUBST(WITH_LEGACY)

if test "$with_reader" = "no" ; then
    echo Disabling the xmlReader parsing interface
    WITH_READER=0
else    
    WITH_READER=1
    if test "$with_push" = "no" ; then
        echo xmlReader requires Push interface - enabling it
	with_push=yes
    fi
fi
AC_SUBST(WITH_READER)

if test "$with_writer" = "no" ; then
    echo Disabling the xmlWriter saving interface
    WITH_WRITER=0
#    WRITER_TEST=