configure.ac

AC_PREREQ([2.50])
AC_INIT([shibboleth],[2.6.0],[https://issues.shibboleth.net/],[shibboleth-sp])
AC_CONFIG_SRCDIR(shibsp)
AC_CONFIG_AUX_DIR(build-aux)
AC_CONFIG_MACRO_DIR(m4)
AM_INIT_AUTOMAKE
AC_DISABLE_STATIC
AC_PROG_LIBTOOL

# Docygen features
DX_HTML_FEATURE(ON)
DX_CHM_FEATURE(OFF)
DX_CHI_FEATURE(OFF)
DX_MAN_FEATURE(OFF)
DX_RTF_FEATURE(OFF)
DX_XML_FEATURE(OFF)
DX_PDF_FEATURE(OFF)
DX_PS_FEATURE(OFF)
DX_INIT_DOXYGEN(shibboleth, doxygen.cfg, doc/api)
DX_INCLUDE=

AC_ARG_ENABLE(debug,
    AS_HELP_STRING([--enable-debug],[Have GCC compile with symbols (Default = no)]),
    enable_debug=$enableval, enable_debug=no)

if test "$enable_debug" = "yes" ; then
    GCC_CFLAGS="$CFLAGS -g -D_DEBUG -Wstrict-overflow=5"
    GCC_CXXFLAGS="$CXXFLAGS -g -D_DEBUG -Wstrict-overflow=5"
else
    GCC_CFLAGS="$CFLAGS -O2 -DNDEBUG -Wstrict-overflow=5"
    GCC_CXXFLAGS="$CXXFLAGS -O2 -DNDEBUG -Wstrict-overflow=5"
fi

AC_CONFIG_HEADERS([config.h shibsp/config_pub.h])
AC_CONFIG_FILES([shibboleth.spec])

AC_PROG_CC([gcc gcc3 cc])
AC_PROG_CXX([g++ g++3 c++ CC])
AC_CANONICAL_HOST

if test "$GCC" = "yes" ; then
#    AC_HAVE_GCC_VERSION(4,0,0,0,
#        [
#        AC_DEFINE(GCC_HASCLASSVISIBILITY,1,
#            [Define to enable class visibility control in gcc.])
#        GCC_CFLAGS="$GCC_CFLAGS -fvisibility=hidden -fvisibility-inlines-hidden"
#        GCC_CXXFLAGS="$GCC_CXXFLAGS -fvisibility=hidden -fvisibility-inlines-hidden"
#        ])
    CFLAGS="-Wall $GCC_CFLAGS"
    CXXFLAGS="-Wall $GCC_CXXFLAGS"
fi

# Fix for Sun Workshop compiler in debug mode, may be Sun case #6360993
# Also enables POSIX semantics for some functions.
case "${host_cpu}-${host_os}" in
    *solaris*)
	CFLAGS="$CFLAGS -D_POSIX_PTHREAD_SEMANTICS"
	CXXFLAGS="$CXXFLAGS -D_POSIX_PTHREAD_SEMANTICS"
	if test "$CXX" = "CC" ; then
		CXXFLAGS="$CXXFLAGS -Qoption ccfe -stabs=no%dfltlit+no%dflthlp"
	fi
    ;;
	*osf*)
	CXXFLAGS="$CXXFLAGS -D_POSIX_PII_SOCKET"
	;;
esac

AC_LANG(C)

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_SIZE_T
AC_STRUCT_TM

# Checks for library functions.
AC_FUNC_STRFTIME
AC_FUNC_STRERROR_R
AC_CHECK_HEADERS([sys/utsname.h grp.h pwd.h])
AC_CHECK_HEADERS([sys/socket.h], [AC_DEFINE([SHIBSP_HAVE_SYS_SOCKET_H],[1],[Define to 1 if you have the <sys/socket> header file.])], [])
AC_CHECK_FUNCS([strchr strdup strstr timegm gmtime_r localtime_r strtok_r strcasecmp getpwnam getgrnam initgroups])
AC_CHECK_TYPES([struct sockaddr_storage], [], [], [[#include <sys/socket.h>]])
AC_CHECK_MEMBERS([struct sockaddr.sa_len], [], [], [[#include <sys/socket.h>]])

AC_CACHE_CHECK([for SOCK_CLOEXEC support], [shib_cv_sock_cloexec],
[AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>
int main()
{
return socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0) == -1;
}], [shib_cv_sock_cloexec=yes], [shib_cv_sock_cloexec=no], [shib_cv_sock_cloexec=no])])

if test "$shib_cv_sock_cloexec" = "yes"; then
	AC_DEFINE([HAVE_SOCK_CLOEXEC], 1, [Define if the SOCK_CLOEXEC flag is supported])
fi

# checks for pthreads
ACX_PTHREAD([enable_threads="pthread"],[enable_threads="no"])
if test $enable_threads != "pthread"; then
    AC_MSG_ERROR([unable to find pthreads, currently this is required])
else
    AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])
    LIBS="$PTHREAD_LIBS $LIBS"
    CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
    CXXFLAGS="$PTHREAD_CFLAGS $CXXFLAGS"
fi

# OpenSSL settings
AC_ARG_WITH(openssl,
    AS_HELP_STRING([--with-openssl=PATH],[where openssl is installed]),
    [if test x_$with_openssl != x_/usr; then
        SSLFLAGS="-I${with_openssl}/include"
    fi])

if test "x$with_openssl" = "x" ; then
    AC_PATH_PROG(PKG_CONFIG, pkg-config)
    if test "x$PKG_CONFIG" != x && test "x$PKG_CONFIG" != "xno" ; then
        if pkg-config openssl ; then
            SSLFLAGS="`$PKG_CONFIG --cflags openssl`"
        else
            AC_MSG_WARN([OpenSSL not supported by pkg-config, try --with-openssl instead])
        fi
    fi
fi

AC_MSG_CHECKING(for OpenSSL cflags)
AC_MSG_RESULT($SSLFLAGS)
CPPFLAGS="$SSLFLAGS $CPPFLAGS"

AC_CHECK_HEADER([openssl/x509.h],,AC_MSG_ERROR([unable to find openssl header files]))

AC_LANG([C++])

# C++ requirements
AC_CXX_NAMESPACES
AC_CXX_REQUIRE_STL

# Boost
BOOST_REQUIRE
BOOST_BIND
BOOST_LAMBDA
BOOST_POINTER_CONTAINER
BOOST_SMART_PTR
BOOST_STRING_ALGO
BOOST_TUPLE
CPPFLAGS="$BOOST_CPPFLAGS $CPPFLAGS"

# Thank you Solaris, really.
AC_MSG_CHECKING(for ctime_r)
if test -z "$ac_cv_ctime_args"; then
    AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM([[#include <time.h>]], [[time_t clock; char buf[26]; ctime_r(&clock, buf);]])],
        [ac_cv_ctime_args=2],[])

    AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM([[#include <time.h>]], [[time_t clock; char buf[26]; ctime_r(&clock, buf, 26);]])],
        [ac_cv_ctime_args=3],[])
fi
if test -z "$ac_cv_ctime_args"; then
    AC_MSG_RESULT(no)
else
    if test "$ac_cv_ctime_args" = 2; then
        AC_DEFINE([HAVE_CTIME_R_2],[1],[Define if ctime_r is present with 2 parameters.])
    elif test "$ac_cv_ctime_args" = 3; then
        AC_DEFINE([HAVE_CTIME_R_3],[1],[Define if ctime_r is present with 3 parameters.])
    fi
    AC_MSG_RESULT([yes, and it takes $ac_cv_ctime_args arguments])
fi 

# log4shib settings (favor this version over the log4cpp code)
AC_PATH_PROG(LOG4SHIB_CONFIG,log4shib-config)
AC_ARG_WITH(log4shib,
    AS_HELP_STRING([--with-log4shib=PATH],[where log4shib-config is installed]),
    [
    LOG4SHIB_CONFIG="${with_log4shib}"
    if ! test -f "${LOG4SHIB_CONFIG}"; then
        LOG4SHIB_CONFIG="${with_log4shib}/bin/log4shib-config"
    fi
    ])
if test -f "${LOG4SHIB_CONFIG}" ; then
    LIBS="`${LOG4SHIB_CONFIG} --libs` $LIBS"
    CPPFLAGS="`${LOG4SHIB_CONFIG} --cflags` $CPPFLAGS"
    AC_CHECK_HEADER([log4shib/CategoryStream.hh],,AC_MSG_ERROR([unable to find log4shib header files]))
    AC_LINK_IFELSE(
        [AC_LANG_PROGRAM([[#include <log4shib/Category.hh>
#include <log4shib/CategoryStream.hh>]],
            [[log4shib::Category::getInstance("foo").errorStream() << log4shib::eol]])],
        [AC_DEFINE([SHIBSP_LOG4SHIB],[1],[Define to 1 if log4shib library is used.])],
        [AC_MSG_ERROR([unable to link with log4shib])])
else
    AC_MSG_WARN([log4shib-config not found, may need to use --with-log4shib option])
    AC_MSG_WARN([will look for original log4cpp library])
    
    # log4cpp settings
    AC_PATH_PROG(LOG4CPP_CONFIG,log4cpp-config)
    AC_ARG_WITH(log4cpp,
        AS_HELP_STRING([--with-log4cpp=PATH],[where log4cpp-config is installed]),
        [
        LOG4CPP_CONFIG="${with_log4cpp}"
        if ! test -f "${LOG4CPP_CONFIG}"; then
            LOG4CPP_CONFIG="${with_log4cpp}/bin/log4cpp-config"
        fi
        ])
    if test -f "${LOG4CPP_CONFIG}"; then
        AC_MSG_WARN([will try to use log4cpp, note that most non-Internet2 supplied versions are not thread-safe])
        LIBS="`${LOG4CPP_CONFIG} --libs` $LIBS"
        CPPFLAGS="`${LOG4CPP_CONFIG} --cflags` $CPPFLAGS"
        AC_CHECK_HEADER([log4cpp/CategoryStream.hh],,AC_MSG_ERROR([unable to find log4cpp header files]))
        AC_LINK_IFELSE(
            [AC_LANG_PROGRAM([[#include <log4cpp/Category.hh>
#include <log4cpp/CategoryStream.hh>]],
                [[log4cpp::Category::getInstance("foo").errorStream() << log4cpp::eol]])],
            [AC_DEFINE([SHIBSP_LOG4CPP],[1],[Define to 1 if log4cpp library is used.])],
            [AC_MSG_ERROR([unable to link with log4cpp, need version 1.0 or later])])
    else
        AC_MSG_ERROR([log4cpp-config not found, may need to use --with-log4cpp option])
    fi
fi

# Xerces settings
AC_ARG_WITH(xerces,
    AS_HELP_STRING([--with-xerces=PATH],[where xerces-c is installed]),,
    [with_xerces=/usr])
if test x_$with_xerces != x_/usr; then
    CPPFLAGS="-I${with_xerces}/include $CPPFLAGS"
    LIBS="-L${with_xerces}/lib -lxerces-c $LIBS"
else
    LIBS="-lxerces-c $LIBS"
fi

AC_CHECK_HEADER([xercesc/dom/DOM.hpp],,AC_MSG_ERROR([unable to find xerces header files]))
AC_MSG_CHECKING([Xerces version])
AC_PREPROC_IFELSE(
    [AC_LANG_PROGRAM([#include <xercesc/util/XercesVersion.hpp>],
[#if  _XERCES_VERSION >= 20700
int i = 0;
#else
#error version 2.7.0 or above required
#endif])],
    [AC_MSG_RESULT(OK)],
    [AC_MSG_FAILURE([Xerces-C v2.7.0 or higher is required, v3.x preferred])])
AC_LINK_IFELSE(
    [AC_LANG_PROGRAM([[#include <xercesc/util/PlatformUtils.hpp>]],[[xercesc::XMLPlatformUtils::Initialize()]])],
    ,[AC_MSG_ERROR([unable to link with Xerces])])

AC_MSG_CHECKING([whether Xerces XMLString::release(XMLByte**) exists])
AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[#include <xercesc/util/XMLString.hpp>]],
    [[using namespace XERCES_CPP_NAMESPACE; XMLByte* buf=NULL; XMLString::release(&buf);]])],
    [AC_MSG_RESULT([yes])AC_DEFINE([SHIBSP_XERCESC_HAS_XMLBYTE_RELEASE],[1],[Define to 1 if Xerces XMLString includes XMLByte release.])],
    [AC_MSG_RESULT([no])])

AC_MSG_CHECKING([whether Xerces DOMNodeFilter API returns a short])
AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[#include <xercesc/dom/DOM.hpp>]],
        [[using namespace XERCES_CPP_NAMESPACE;
      class Blocker : public DOMNodeFilter {
      public:
        short acceptNode(const DOMNode* node) const {
            return FILTER_REJECT;
        }
      };
      static Blocker g_Blocker;
    ]])],
    [AC_MSG_RESULT([yes])AC_DEFINE([SHIBSP_XERCESC_SHORT_ACCEPTNODE],[1],[Define to 1 if Xerces DOMNodeFilter API returns a short.])],
    [AC_MSG_RESULT([no])])

# XML-Security settings
AC_ARG_WITH(xmlsec,
    AS_HELP_STRING([--with-xmlsec=PATH],[where xmlsec is installed]),,
    [with_xmlsec=/usr])
if test x_$with_xmlsec != x_/usr; then
    CPPFLAGS="-I${with_xmlsec}/include $CPPFLAGS"
    XMLSEC_LIBS="-L${with_xmlsec}/lib -lxml-security-c $XMLSEC_LIBS"
else
    XMLSEC_LIBS="-lxml-security-c $XMLSEC_LIBS"
fi

# save and append master libs
save_LIBS="$LIBS"
LIBS="$XMLSEC_LIBS $LIBS"

AC_CHECK_HEADER([xsec/utils/XSECPlatformUtils.hpp],,AC_MSG_ERROR([unable to find XML-Security-C header files]))
AC_MSG_CHECKING([XML-Security-C version])
AC_PREPROC_IFELSE(
    [AC_LANG_PROGRAM([#include <xsec/utils/XSECPlatformUtils.hpp>],
    [#if XSEC_VERSION_MAJOR > 1 || (XSEC_VERSION_MAJOR == 1 && XSEC_VERSION_MEDIUM > 3)
int i = 0;
#else
#error need version 1.4.0 or later
#endif])],
    [AC_MSG_RESULT(OK)],
    [AC_MSG_FAILURE([XML-Security-C version 1.4.0 or greater is required.])])
AC_LINK_IFELSE(
    [AC_LANG_PROGRAM([[#include <xsec/utils/XSECPlatformUtils.hpp>]],
        [[XSECPlatformUtils::Initialise()]])],,
    [AC_MSG_ERROR([unable to link with XML-Security])])

AC_MSG_CHECKING([whether XML-Security-C supports white/blacklisting of algorithms])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <xsec/framework/XSECAlgorithmMapper.hpp>]], [[XSECAlgorithmMapper* mapper; mapper->whitelistAlgorithm(NULL);]])],[AC_MSG_RESULT([yes])
      AC_DEFINE([SHIBSP_XMLSEC_WHITELISTING],[1],[Define to 1 if XML-Security-C supports white/blacklisting algorithms.])],[AC_MSG_RESULT([no])])

# restore master libs
LIBS="$save_LIBS"

#XML-Tooling settings
AC_ARG_WITH(xmltooling,
    AS_HELP_STRING([--with-xmltooling=PATH],[where xmltooling is installed]),,
    [with_xmltooling=/usr])
if test x_$with_xmltooling != x_/usr; then
    CPPFLAGS="-I${with_xmltooling}/include $CPPFLAGS"
    DX_INCLUDE="${with_xmltooling}/include"
    LITE_LIBS="-L${with_xmltooling}/lib -lxmltooling-lite"
    XMLSEC_LIBS="-L${with_xmltooling}/lib -lxmltooling $XMLSEC_LIBS"
else
    LITE_LIBS="-lxmltooling-lite"
    XMLSEC_LIBS="-lxmltooling $XMLSEC_LIBS"
fi

AC_CHECK_HEADER([xmltooling/base.h],,AC_MSG_ERROR([unable to find xmltooling header files]))

# save and append master libs
save_LIBS="$LIBS"
LIBS="$XMLSEC_LIBS $LIBS"

AC_LINK_IFELSE(
    [AC_LANG_PROGRAM([[#include <xmltooling/XMLToolingConfig.h>
#include <xmltooling/version.h>]],
        [[#if _XMLTOOLING_VERSION >= 10500
xmltooling::XMLToolingConfig::getConfig();
#else
#error Need XMLTooling version 1.5 or higher
#endif]])],
    ,[AC_MSG_ERROR([unable to link with XMLTooling, or version was too old])])

# restore master libs
LIBS="$save_LIBS"

# Establish location of xmltooling catalog.
XMLTOOLINGXMLDIR=""
if test "x$with_xmltooling" = "x" ; then
   with_xmltooling="/usr"
fi
if test -f $with_xmltooling/share/xml/xmltooling/catalog.xml ; then
    XMLTOOLINGXMLDIR="$with_xmltooling"
elif test -f $with_xerces/share/xml/xmltooling/catalog.xml ; then
    XMLTOOLINGXMLDIR="$with_xerces"
elif test -f $with_log4shib/share/xml/xmltooling/catalog.xml ; then
    XMLTOOLINGXMLDIR="$with_log4shib"
fi
if test "x$XMLTOOLINGXMLDIR" = "x" ; then
    AC_MSG_ERROR([xmltooling XML catalog not found, may need to use --with-xmltooling option])
fi
XMLTOOLINGXMLDIR="$XMLTOOLINGXMLDIR/share/xml/xmltooling"
AC_SUBST(XMLTOOLINGXMLDIR)

# OpenSAML settings
AC_ARG_WITH(saml,
    AS_HELP_STRING([--with-saml=PATH],[where opensaml is installed]),,
    [with_saml=/usr])
if test x_$with_saml != x_/usr; then
    CPPFLAGS="-I${with_saml}/include $CPPFLAGS"
    DX_INCLUDE="$DX_INCLUDE ${with_saml}/include"
    XMLSEC_LIBS="-L${with_saml}/lib -lsaml $XMLSEC_LIBS"
else
    XMLSEC_LIBS="-lsaml $XMLSEC_LIBS"
fi

# save and append master libs
save_LIBS="$LIBS"
LIBS="$XMLSEC_LIBS $LIBS"

AC_CHECK_HEADER([saml/saml2/metadata/Metadata.h],,AC_MSG_ERROR([unable to find OpenSAML header files]))
AC_LINK_IFELSE(
    [AC_LANG_PROGRAM([[#include <saml/SAMLConfig.h>
#include <saml/version.h>]],
[[#if _OPENSAML_VERSION >= 20500
opensaml::SAMLConfig::getConfig();
#else
#error Need OpenSAML version 2.5 or higher
#endif]])],
    ,[AC_MSG_ERROR([unable to link with OpenSAML, or version was too old])
	])

# restore master libs
LIBS="$save_LIBS"

# Establish location of opensaml catalogs.
OPENSAMLXMLDIR=""
if test "x$with_saml" = "x" ; then
    with_saml="/usr"
fi
if test -f $with_saml/share/xml/opensaml/saml20-catalog.xml ; then
    OPENSAMLXMLDIR="$with_saml"
elif test -f $with_xmltooling/share/xml/opensaml/saml20-catalog.xml ; then
    OPENSAMLXMLDIR="$with_xmltooling"
elif test -f $with_xerces/share/xml/opensaml/saml20-catalog.xml ; then
    OPENSAMLXMLDIR="$with_xerces"
elif test -f $with_log4shib/share/xml/opensaml/saml20-catalog.xml ; then
    OPENSAMLXMLDIR="$with_log4shib"
fi
if test "x$OPENSAMLXMLDIR" = "x" ; then
    AC_MSG_ERROR([opensaml XML catalogs not found, may need to use --with-saml option])
fi
OPENSAMLXMLDIR="$OPENSAMLXMLDIR/share/xml/opensaml"
AC_SUBST(OPENSAMLXMLDIR)

AC_SUBST(LITE_LIBS)
AC_SUBST(XMLSEC_LIBS)

# output the underlying makefiles
WANT_SUBDIRS="doc schemas configs shibsp plugins shibd util"
AC_CONFIG_FILES([Makefile doc/Makefile schemas/Makefile \
	configs/Makefile shibsp/Makefile plugins/Makefile \
	shibd/Makefile util/Makefile selinux/Makefile])

## ADFS?
AC_CONFIG_FILES([adfs/Makefile])
AC_ARG_ENABLE([adfs],
    AS_HELP_STRING([--disable-adfs],[don't build the ADFS module]),
    [adfs_enabled=$enableval], [adfs_enabled=yes])
if test "x$adfs_enabled" = "x" ; then
    adfs_enabled=yes
fi
AC_MSG_CHECKING(whether to build the ADFS module)
if test "$adfs_enabled" = "no" ; then
    AC_MSG_RESULT(no)
else
    AC_MSG_RESULT(yes)
    WANT_SUBDIRS="$WANT_SUBDIRS adfs"
fi

## systemd
dnl Systemd will be disabled by default and requires you to run configure with
dnl --enable-systemd to look for and enable systemd.
AC_ARG_ENABLE(systemd,
    AS_HELP_STRING([--enable-systemd],[Build with systemd (Default = no)]),
	[if test "x$enableval" = "x" ; then
         WANT_SYSTEMD=no
	 else
	     WANT_SYSTEMD="$enableval"
	 fi
	],[ WANT_SYSTEMD=no ])
AC_MSG_CHECKING(whether to build with systemd)

AC_MSG_RESULT($WANT_SYSTEMD)
if test "$WANT_SYSTEMD" = "yes" ; then
	AC_CHECK_HEADER([systemd/sd-daemon.h], [
	    AC_CHECK_LIB([systemd-daemon], [sd_notify], [hassdnotify="y"])])
	AS_IF([test "x$hassdnotify=" = x], [
	   AC_MSG_ERROR([Unable to find a suitable libsystemd-daemon library])
	])
	AC_DEFINE([HAVE_SD_NOTIFY],[1],[Define to 1 if you have the sd_notify function.])
	PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon])
	AC_SUBST([SYSTEMD_CFLAGS])
	AC_SUBST([SYSTEMD_LIBS])
fi

#
# Build NSAPI module?
#
AC_MSG_CHECKING(for NSAPI module option)
AC_ARG_WITH(nsapi,
    AS_HELP_STRING([--with-nsapi=DIR],[Build NSAPI module for Netscape/iPlanet/SunONE]),
    [WANT_NSAPI=$withval],[WANT_NSAPI=no])
AC_MSG_RESULT($WANT_NSAPI)

if test "$WANT_NSAPI" != "no"; then
  if test ! -d $WANT_NSAPI/bin ; then
    AC_MSG_ERROR([Please specify the path to the root of your Netscape/iPlanet/SunONE server using --with-nsapi=DIR])
  fi
  AC_MSG_CHECKING(for NSAPI include files)
  if test -d $WANT_NSAPI/include ; then
    NSAPI_INCLUDE=$WANT_NSAPI/include
    AC_MSG_RESULT(Netscape-Enterprise 3.x style)
    AC_CHECK_HEADERS([$NSAPI_INCLUDE/nsapi.h],,,[#define XP_UNIX])
    NSAPI_INCLUDE="$NSAPI_INC_DIR -I$NSAPI_INCLUDE"
  fi
  if test -d $WANT_NSAPI/plugins/include ; then
    test -n "$NSAPI_INCLUDE" && NSAPI_INC_DIR="-I$NSAPI_INCLUDE"
    NSAPI_INCLUDE="$WANT_NSAPI/plugins/include"
    AC_MSG_RESULT(iPlanet 4.x / SunONE 6.x style)
    AC_CHECK_HEADERS([$NSAPI_INCLUDE/nsapi.h],,,[#define XP_UNIX])
    NSAPI_INCLUDE="$NSAPI_INC_DIR -I$NSAPI_INCLUDE"
  fi
  if test "$NSAPI_INCLUDE" = ""; then
    AC_MSG_ERROR([Please check you have nsapi.h in either $WANT_NSAPI/include or $WANT_NSAPI/plugins/include])
  fi
fi

AC_SUBST(NSAPI_INCLUDE)

# always output the Makefile, even if you don't use it
AC_CONFIG_FILES([nsapi_shib/Makefile])
AM_CONDITIONAL(BUILD_NSAPI,test ! "$WANT_NSAPI" = "no")

# add the NSAPI module to the list of wanted subdirs..
if test ! "$WANT_NSAPI" = "no" ; then
    WANT_SUBDIRS="$WANT_SUBDIRS nsapi_shib"
fi


#
# Build FastCGI support?
#
AC_MSG_CHECKING(for FastCGI support)
AC_ARG_WITH(fastcgi,
    AS_HELP_STRING([--with-fastcgi=DIR],[Build FastCGI support]),
    [WANT_FASTCGI=$withval],[WANT_FASTCGI=no])
AC_MSG_RESULT($WANT_FASTCGI)

if test "$WANT_FASTCGI" != "no"; then

    if test "$WANT_FASTCGI" != "yes"; then
        if test x_$WANT_FASTCGI != x_/usr; then
            FASTCGI_INCLUDE="-I$WANT_FASTCGI/include"
            FASTCGI_LDFLAGS="-L$WANT_FASTCGI/lib"
        fi
    fi

    # save and append master flags
    save_CPPFLAGS="$CPPFLAGS"
    CPPFLAGS="$FASTCGI_INCLUDE $CPPFLAGS"

    AC_CHECK_HEADER([fcgio.h],,AC_MSG_ERROR([unable to find FastCGI header files]))
    FASTCGI_LIBS="-lfcgi -lfcgi++"

    # restore standard flags
    CPPFLAGS="$save_CPPFLAGS"
fi

AC_SUBST(FASTCGI_INCLUDE)
AC_SUBST(FASTCGI_LDFLAGS)
AC_SUBST(FASTCGI_LIBS)

# always output the Makefile, even if you don't use it
AC_CONFIG_FILES([fastcgi/Makefile])
AM_CONDITIONAL(BUILD_FASTCGI,test ! "$WANT_FASTCGI" = "no")

if test ! "$WANT_FASTCGI" = "no" ; then
    WANT_SUBDIRS="$WANT_SUBDIRS fastcgi"
fi

#
# Build Memcached support?
#
AC_MSG_CHECKING(for Memcached support)
AC_ARG_WITH(memcached,
    AS_HELP_STRING([--with-memcached=DIR],[Build Memcached support]),
    [WANT_MEMCACHED=$withval],[WANT_MEMCACHED=no])
AC_MSG_RESULT($WANT_MEMCACHED)

if test "$WANT_MEMCACHED" != "no"; then

    if test "$WANT_MEMCACHED" != "yes"; then
        if test x_$WANT_MEMCACHED != x_/usr; then
            MEMCACHED_INCLUDE="-I$WANT_MEMCACHED/include"
            MEMCACHED_LDFLAGS="-L$WANT_MEMCACHED/lib"
        fi
    fi

    # save and append master flags
    save_CPPFLAGS="$CPPFLAGS"
    CPPFLAGS="$MEMCACHED_INCLUDE $CPPFLAGS"    

    AC_CHECK_HEADER([libmemcached/memcached.h],,
        AC_MSG_ERROR([unable to find Memcached header files]))
    AC_CHECK_DECL([memcached_last_error_message],
        [AC_DEFINE([HAVE_MEMCACHED_LAST_ERROR_MESSAGE],[1],[Define to 1 if libmemcached supports error handling function.])],,
        [#include <libmemcached/memcached.h>])
    MEMCACHED_LIBS="-lmemcached"

    # restore standard flags
    CPPFLAGS="$save_CPPFLAGS"
fi

AC_SUBST(MEMCACHED_INCLUDE)
AC_SUBST(MEMCACHED_LDFLAGS)
AC_SUBST(MEMCACHED_LIBS)

# always output the Makefile, even if you don't use it
AC_CONFIG_FILES([memcache-store/Makefile])
AM_CONDITIONAL(BUILD_MEMCACHED,test ! "$WANT_MEMCACHED" = "no")

if test ! "$WANT_MEMCACHED" = "no" ; then
    WANT_SUBDIRS="$WANT_SUBDIRS memcache-store"
fi


#
# If no --enable-apache-xx specified 
# find a default and fake the specific parameters
#

# simple macro to peek at an enable or a with
AC_DEFUN([Peek],
if test "[${[$1]_][$2]+set}" = set; then
  peekval="${[$1]_[$2]}"
  $3
fi; dnl
)

AC_MSG_CHECKING(if default apache needed)
need_default=yes
Peek(enable,apache_13,need_default=no)
Peek(enable,apache_20,need_default=no)
Peek(enable,apache_22,need_default=no)
Peek(enable,apache_24,need_default=no)
AC_MSG_RESULT($need_default)

if test "$need_default" = "yes"; then
  # find an apxs, then the httpd
  xs=
  Peek(with,apxs,xs="$peekval")
  Peek(with,apxs2,xs="$peekval")
  Peek(with,apxs22,xs="$peekval")
  Peek(with,apxs24,xs="$peekval")
  if test "x$xs" = "x"; then
     AC_PATH_PROGS(xs, apxs2 apxs,
        AC_MSG_ERROR(No apxs, no Apache found. Try --with-apxs, --with-apxs2, etc.),
        [/usr/local/apache2/bin:/usr/local/apache/bin:/usr/sbin:$PATH])
  fi
  # ask the daemon for the version and set parameters
  AC_MSG_CHECKING(default apache version)
  httpd="`$xs -q SBINDIR`/`$xs -q TARGET`"
  if test "x$httpd" != "x" && test -f $httpd ; then
     v=`$httpd -v|$SED -n -e 's/.*Apache\/\.*//p'`
     case $v in
       1.3*)   [enable_apache_13]=yes
               [with_apxs]=$xs
               AC_MSG_RESULT(1.3)
               ;;
       2.0*)   [enable_apache_20]=yes
               [with_apxs2]=$xs
               AC_MSG_RESULT(2.0)
               ;;
       2.2*)   [enable_apache_22]=yes
               [with_apxs22]=$xs
               AC_MSG_RESULT(2.2)
               ;;
       2.4*)   [enable_apache_24]=yes
               [with_apxs24]=$xs
               AC_MSG_RESULT(2.4)
               ;;
       *)      AC_MSG_ERROR(unusable Apache versions: $v. Try setting --with-apxs, --with=apxs2, etc.)
     esac
  else 
     AC_MSG_RESULT(cannot determine Apache version. Try setting --with-apxs, --with-apxs2, etc.)
  fi
fi

# Apache 1.3 (mod_shib_13)
#   --enable-apache-13
#   --with-apxs      (DSO build, the normal way, uses apxs to derive build flags)

AC_ARG_ENABLE(apache-13,
	AS_HELP_STRING([--enable-apache-13],[enable the Apache 1.3 module]),
	[if test "x$enableval" = "x" ; then
         WANT_APACHE_13=yes
	 else
	     WANT_APACHE_13="$enableval"
	 fi
	],[ WANT_APACHE_13=no ])
AC_MSG_CHECKING(whether to build Apache 1.3 module)
if test "$WANT_APACHE_13" != yes && test "$WANT_APACHE_13" != no ; then
   WANT_APACHE_13=yes
fi
AC_MSG_RESULT($WANT_APACHE_13)

if test "$WANT_APACHE_13" = "yes" ; then
    AC_ARG_WITH(apxs, 
        AS_HELP_STRING([--with-apxs=FILE],[Specifies where to find the Apache 1.3 apxs script.]),
        [
        AC_MSG_CHECKING(for user-specified apxs name/location)
        if test "$withval" != "no" ; then
          if test "$withval" != "yes"; then
            APXS=$withval
            AC_MSG_RESULT("$withval")
          fi
        fi
        ],
        [
        AC_PATH_PROG(APXS, apxs, no)
        if test "$APXS" = "no" ; then
          for i in /usr/sbin /usr/local/apache/bin ; do
            if test "$APXS" = "no" && test -f "$i/apxs"; then
              APXS="$i/apxs"
            fi
          done
        fi
        ])

    AC_MSG_CHECKING([to see if apxs was located])
    if test ! -f "$APXS" ; then
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([Unable to locate apxs script. An Apache development package may be missing from your server, or you may need to use the --with-apxs option.])
    fi
    AC_MSG_RESULT($APXS)
    AC_SUBST(APXS)

    # extract settings we need from APXS -q
    APXS_CC="`$APXS -q CC`"
    APXS_CFLAGS="`$APXS -q CFLAGS` `$APXS -q CFLAGS_SHLIB`"
    APXS_INCLUDE="`$APXS -q INCLUDEDIR`"
fi

AC_SUBST(APXS_CFLAGS)
AC_SUBST(APXS_INCLUDE)


# Apache 2.0 (mod_shib_20)
#   --enable-apache-20
#   --with-apxs2      (DSO build, the normal way, uses apxs to derive build flags)
#   --with-apr        (DSO build, APR development package installed separately)
#   --with-apu        (DSO build, APR-UTIL development package installed separately)

AC_ARG_ENABLE(apache-20,
	AS_HELP_STRING([--enable-apache-20],[enable the Apache 2.0 module]),
	[if test "x$enableval" = "x" ; then
         WANT_APACHE_20=yes
	 else
	     WANT_APACHE_20="$enableval"
	 fi
	],[ WANT_APACHE_20=no ])
AC_MSG_CHECKING(whether to build Apache 2.0 module)
if test "$WANT_APACHE_20" != yes && test "$WANT_APACHE_20" != no ; then
    WANT_APACHE_20=yes
fi
AC_MSG_RESULT($WANT_APACHE_20)

if test "$WANT_APACHE_20" = "yes" ; then
    AC_ARG_WITH(apxs2, 
        AS_HELP_STRING([--with-apxs2=FILE],[Specifies where to find the Apache 2.0 apxs script.]),
        [
        AC_MSG_CHECKING(for user-specified Apache 2.0 apxs name/location)
        if test "$withval" != "no" ; then
          if test "$withval" != "yes"; then
            APXS2=$withval
            AC_MSG_RESULT("$withval")
          fi
        fi
        ],
        [
        AC_PATH_PROG(APXS2, apxs2, no)
        if test "$APXS2" = "no" ; then
            AC_PATH_PROG(APXS2, apxs, no)
        fi
        if test "$APXS2" = "no" ; then
          for i in /usr/sbin /usr/local/apache2/bin /usr/local/apache/bin ; do
            if test "$APXS2" = "no" && test -f "$i/apxs2" ; then
              APXS2="$i/apxs2"
            fi
          done
          if test "$APXS2" = "no" ; then
            for i in /usr/sbin /usr/local/apache2/bin /usr/local/apache/bin ; do
              if test "$APXS2" = "no" && test -f "$i/apxs" ; then
                APXS2="$i/apxs"
              fi
            done
          fi
        fi
        ])

    AC_MSG_CHECKING([to see if Apache 2.0 apxs was located])
    if test ! -f "$APXS2" ; then
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([Unable to locate Apache 2.0 apxs script. An Apache development package may be missing from your server, or you may need to use the --with-apxs2 option.])
    fi
    AC_MSG_RESULT($APXS2)
    AC_SUBST(APXS2)

    # APR settings
    AC_ARG_WITH(apr, 
        AS_HELP_STRING([--with-apr=PATH],[where apr-config is installed]),
        [
        AC_MSG_CHECKING(for user-specified apr-config name/location)
        if test "$withval" != "no" ; then
            if test "$withval" != "yes"; then
                APR_CONFIG=$withval
                AC_MSG_RESULT("$withval")
            fi
        fi
        ],
        [
        AC_PATH_PROG(APR_CONFIG, apr-config,,[`$APXS2 -q SBINDIR`]:[$PATH])
        ])
	if test -f "${APR_CONFIG}"; then
        APR_CFLAGS="`${APR_CONFIG} --cflags` `${APR_CONFIG} --cppflags` `${APR_CONFIG} --includes`"
    else
        AC_MSG_ERROR([Unable to locate apr-config, may need --with-apr option.])
    fi

    # APU settings
    AC_ARG_WITH(apu, 
        AS_HELP_STRING([--with-apu=PATH],[where apu-config is installed]),
        [
        AC_MSG_CHECKING(for user-specified apu-config name/location)
        if test "$withval" != "no" ; then
            if test "$withval" != "yes"; then
                APU_CONFIG=$withval
                AC_MSG_RESULT("$withval")
            fi
        fi
        ],
        [
        AC_PATH_PROG(APU_CONFIG, apu-config,,[`$APXS2 -q SBINDIR`]:[$PATH])
        ])
    if test -f "${APU_CONFIG}"; then
        APU_CFLAGS="`${APU_CONFIG} --includes`"
    else
        AC_MSG_ERROR([Unable to locate apu-config, may need --with-apu option.])
    fi

    # extract settings we need from APXS2 -q
    APXS2_CC="`$APXS2 -q CC`"
    APXS2_CFLAGS="`$APXS2 -q CPPFLAGS` `$APXS2 -q CFLAGS` $APR_CFLAGS $APU_CFLAGS"
    APXS2_INCLUDE="`$APXS2 -q INCLUDEDIR`"
fi

AC_SUBST(APXS2_CFLAGS)
AC_SUBST(APXS2_INCLUDE)


# Apache 2.2 (mod_shib_22)
#   --enable-apache-22
#   --with-apxs22     (DSO build, the normal way, uses apxs to derive build flags)
#   --with-apr1       (DSO build, APR development package installed separately)
#   --with-apu1       (DSO build, APR-UTIL development package installed separately)

AC_ARG_ENABLE(apache-22,
	AS_HELP_STRING([--enable-apache-22],[enable the Apache 2.2 module]),
	[if test "x$enableval" = "x" ; then
         WANT_APACHE_22=yes
	 else
	     WANT_APACHE_22="$enableval"
	 fi
	],[ WANT_APACHE_22=no ])
AC_MSG_CHECKING(whether to build Apache 2.2 module)
if test "$WANT_APACHE_22" != yes && test "$WANT_APACHE_22" != no ; then
    WANT_APACHE_22=yes
fi
AC_MSG_RESULT($WANT_APACHE_22)

if test "$WANT_APACHE_22" = "yes" ; then
    AC_ARG_WITH(apxs22, 
        AS_HELP_STRING([--with-apxs22=FILE],[Specifies where to find the Apache 2.2 apxs script.]),
        [
        AC_MSG_CHECKING(for user-specified Apache 2.2 apxs name/location)
        if test "$withval" != "no" ; then
          if test "$withval" != "yes"; then
            APXS22=$withval
            AC_MSG_RESULT("$withval")
          fi
        fi
        ],
        [
        AC_PATH_PROG(APXS22, apxs2, no)
        if test "$APXS22" = "no" ; then
            AC_PATH_PROG(APXS22, apxs, no)
        fi
        if test "$APXS22" = "no" ; then
          for i in /usr/sbin /usr/local/apache2/bin /usr/local/apache/bin ; do
            if test "$APXS22" = "no" && test -f "$i/apxs2" ; then
              APXS22="$i/apxs2"
            fi
          done
          if test "$APXS22" = "no" ; then
            for i in /usr/sbin /usr/local/apache2/bin /usr/local/apache/bin ; do
              if test "$APXS22" = "no" && test -f "$i/apxs" ; then
                APXS22="$i/apxs"
              fi
            done
          fi
        fi
        ])

    AC_MSG_CHECKING([to see if Apache 2.2 apxs was located])
    if test ! -f "$APXS22" ; then
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([Unable to locate Apache 2.2 apxs script. An Apache development package may be missing from your server, or you may need to use the --with-apxs22 option.])
    fi
    AC_MSG_RESULT($APXS22)
    AC_SUBST(APXS22)

    # APR1 settings
    AC_ARG_WITH(apr1, 
        AS_HELP_STRING([--with-apr1=PATH],[where apr-1-config is installed]),
        [
        AC_MSG_CHECKING(for user-specified apr-1-config name/location)
        if test "$withval" != "no" ; then
            if test "$withval" != "yes"; then
                APR1_CONFIG=$withval
                AC_MSG_RESULT("$withval")
            fi
        fi
        ],
        [
        AC_PATH_PROG(APR1_CONFIG, apr-1-config,,[`$APXS22 -q SBINDIR`]:[$PATH])
        ])
	if test -f "${APR1_CONFIG}"; then
        APR1_CFLAGS="`${APR1_CONFIG} --cflags` `${APR1_CONFIG} --cppflags` `${APR1_CONFIG} --includes`"
    else
        AC_MSG_ERROR([Unable to locate apr-1-config, may need --with-apr1 option.])
    fi

    # APU1 settings
    AC_ARG_WITH(apu1, 
        AS_HELP_STRING([--with-apu1=PATH],[where apu-1-config is installed]),
        [
        AC_MSG_CHECKING(for user-specified apu-1-config name/location)
        if test "$withval" != "no" ; then
            if test "$withval" != "yes"; then
                APU1_CONFIG=$withval
                AC_MSG_RESULT("$withval")
            fi
        fi
        ],
        [
        AC_PATH_PROG(APU1_CONFIG, apu-1-config,,[`$APXS22 -q SBINDIR`]:[$PATH])
        ])
    if test -f "${APU1_CONFIG}"; then
        APU1_CFLAGS="`${APU1_CONFIG} --includes`"
    else
        AC_MSG_ERROR([Unable to locate apu-1-config, may need --with-apu1 option.])
    fi

    # extract settings we need from APXS22 -q
    APXS22_CC="`$APXS22 -q CC`"
    APXS22_CFLAGS="`$APXS22 -q CPPFLAGS` `$APXS22 -q CFLAGS` $APR1_CFLAGS $APU1_CFLAGS"
    APXS22_INCLUDE="`$APXS22 -q INCLUDEDIR`"
fi

AC_SUBST(APXS22_CFLAGS)
AC_SUBST(APXS22_INCLUDE)

# Apache 2.4 (mod_shib_24)
#   --enable-apache-24
#   --with-apxs24     (DSO build, the normal way, uses apxs to derive build flags)
#   --with-apr1       (DSO build, APR development package installed separately)
#   --with-apu1       (DSO build, APR-UTIL development package installed separately)

AC_ARG_ENABLE(apache-24,
	AS_HELP_STRING([--enable-apache-24],[enable the Apache 2.4 module]),
	[if test "x$enableval" = "x" ; then
         WANT_APACHE_24=yes
	 else
	     WANT_APACHE_24="$enableval"
	 fi
	],[ WANT_APACHE_24=no ])
AC_MSG_CHECKING(whether to build Apache 2.4 module)
if test "$WANT_APACHE_24" != yes && test "$WANT_APACHE_24" != no ; then
    WANT_APACHE_24=yes
fi
AC_MSG_RESULT($WANT_APACHE_24)

if test "$WANT_APACHE_24" = "yes" ; then
    AC_ARG_WITH(apxs24, 
        AS_HELP_STRING([--with-apxs24=FILE],[Specifies where to find the Apache 2.4 apxs script.]),
        [
        AC_MSG_CHECKING(for user-specified Apache 2.4 apxs name/location)
        if test "$withval" != "no" ; then
          if test "$withval" != "yes"; then
            APXS24=$withval
            AC_MSG_RESULT("$withval")
          fi
        fi
        ],
        [
        AC_PATH_PROG(APXS24, apxs2, no)
        if test "$APXS24" = "no" ; then
            AC_PATH_PROG(APXS24, apxs, no)
        fi
        if test "$APXS24" = "no" ; then
          for i in /usr/sbin /usr/local/apache2/bin /usr/local/apache/bin ; do
            if test "$APXS24" = "no" && test -f "$i/apxs2" ; then
              APXS24="$i/apxs2"
            fi
          done
          if test "$APXS24" = "no" ; then
            for i in /usr/sbin /usr/local/apache2/bin /usr/local/apache/bin ; do
              if test "$APXS24" = "no" && test -f "$i/apxs" ; then
                APXS24="$i/apxs"
              fi
            done
          fi
        fi
        ])

    AC_MSG_CHECKING([to see if Apache 2.4 apxs was located])
    if test ! -f "$APXS24" ; then
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([Unable to locate Apache 2.4 apxs script. An Apache development package may be missing from your server, or you may need to use the --with-apxs24 option.])
    fi
    AC_MSG_RESULT($APXS24)
    AC_SUBST(APXS24)

    # If we haven't done this work already for Apache 2.2
    if test "$WANT_APACHE_22" != "yes" ; then
        # APR1 settings
        AC_ARG_WITH(apr1,
            AS_HELP_STRING([--with-apr1=PATH],[where apr-1-config is installed]),
            [
            AC_MSG_CHECKING(for user-specified apr-1-config name/location)
            if test "$withval" != "no" ; then
                if test "$withval" != "yes"; then
                    APR1_CONFIG=$withval
                    AC_MSG_RESULT("$withval")
                fi
            fi
            ],
            [
            AC_PATH_PROG(APR1_CONFIG, apr-1-config,,[`$APXS24 -q SBINDIR`]:[$PATH])
            ])
        if test -f "${APR1_CONFIG}"; then
            APR1_CFLAGS="`${APR1_CONFIG} --cflags` `${APR1_CONFIG} --cppflags` `${APR1_CONFIG} --includes`"
        else
            AC_MSG_ERROR([Unable to locate apr-1-config, may need --with-apr1 option.])
        fi

        # APU1 settings
        AC_ARG_WITH(apu1,
            AS_HELP_STRING([--with-apu1=PATH],[where apu-1-config is installed]),
            [
            AC_MSG_CHECKING(for user-specified apu-1-config name/location)
            if test "$withval" != "no" ; then
                if test "$withval" != "yes"; then
                    APU1_CONFIG=$withval
                    AC_MSG_RESULT("$withval")
                fi
            fi
            ],
            [
            AC_PATH_PROG(APU1_CONFIG, apu-1-config,,[`$APXS24 -q SBINDIR`]:[$PATH])
            ])
        if test -f "${APU1_CONFIG}"; then
            APU1_CFLAGS="`${APU1_CONFIG} --includes`"
        else
            AC_MSG_ERROR([Unable to locate apu-1-config, may need --with-apu1 option.])
        fi
    fi
    
    # extract settings we need from APXS24 -q
    APXS24_CC="`$APXS24 -q CC`"
    APXS24_CFLAGS="`$APXS24 -q CPPFLAGS` `$APXS24 -q CFLAGS` $APR1_CFLAGS $APU1_CFLAGS"
    APXS24_INCLUDE="`$APXS24 -q INCLUDEDIR`"
fi

AC_SUBST(APXS24_CFLAGS)
AC_SUBST(APXS24_INCLUDE)

# always output the Makefile, even if you don't use it
AC_CONFIG_FILES([apache/Makefile])
AM_CONDITIONAL(BUILD_AP13,test "$WANT_APACHE_13" = "yes")
AM_CONDITIONAL(BUILD_AP20,test "$WANT_APACHE_20" = "yes")
AM_CONDITIONAL(BUILD_AP22,test "$WANT_APACHE_22" = "yes")
AM_CONDITIONAL(BUILD_AP24,test "$WANT_APACHE_24" = "yes")

# add the apache module to the list of wanted subdirs..
if test "$WANT_APACHE_13" = "yes" || test "$WANT_APACHE_20" = "yes" || test "$WANT_APACHE_22" = "yes" || test "$WANT_APACHE_24" = "yes" ; then
    WANT_SUBDIRS="$WANT_SUBDIRS apache"
fi


#
# Implement the checks of the ODBC Storage Service
#
# 1) Assume the user wants ODBC; if it's not found then just continue without
# 2) If the user specifically requested odbc, look for it and ERROR if not found
# 3) If the user specifically requested no odbc, don't build it.
#

AC_CONFIG_FILES([odbc-store/Makefile])

# determine whether we should enable the odbc ccache
AC_ARG_ENABLE([odbc],
	AS_HELP_STRING([--disable-odbc],[disable the ODBC Storage Service]),
	[odbc_enabled=$enableval], [odbc_enabled=default])
if test "x$odbc_enabled" = "x" ; then
    odbc_enabled=yes
fi

# Are we trying to build ODBC?
AC_MSG_CHECKING(whether to build the ODBC storage service)
if test "$odbc_enabled" = "yes" ; then
    build_odbc=yes
    AC_MSG_RESULT(yes)
elif test "$odbc_enabled" = "default" ; then
    build_odbc=yes
    AC_MSG_RESULT([yes, if it can be found])
else
    build_odbc=no
    AC_MSG_RESULT(no)
fi

# If we're trying to build ODBC, try to find the odbc_config program.
if test "$build_odbc" = "yes" ; then
    odbc_dir=""
    AC_ARG_WITH(odbc,
	   AS_HELP_STRING([--with-odbc=PATH],[directory where odbc is installed]),
	    [if test "$with_odbc" = no ; then
            AC_MSG_ERROR([Try running --disable-odbc instead.])
         elif test "$with_odbc" != yes ; then
            odbc_dir="$with_odbc/bin"
            if test "$with_odbc" != /usr ; then
                ODBC_CFLAGS="-I$with_odbc/include"
                ODBC_LIBS="-L$with_odbc/lib"
            fi
         fi])

   AC_PATH_PROG(ODBC_CONFIG, odbc_config, no, $odbc_dir $PATH )
   if test "$ODBC_CONFIG" = no ; then
      AC_MSG_WARN([Cannot find odbc_config, will try to guess settings.])
      ODBC_LIBS="$ODBC_LIBS -lodbc"
   else
      ODBC_CFLAGS=`$ODBC_CONFIG --cflags`
      ODBC_LIBS=`$ODBC_CONFIG --libs`
   fi

   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $ODBC_CFLAGS"

   AC_CHECK_HEADER([sql.h], [have_sql_h=yes], [have_sql_h=no])
   if test "$have_sql_h" = no -a "$odbc_enabled" = "yes" ; then
     AC_MSG_ERROR(unable to find ODBC header files)
   fi

   if test "$have_sql_h" = yes ; then
      save_LIBS="$LIBS"
      LIBS="$LIBS $ODBC_LIBS"
      AC_MSG_CHECKING(if we can link againt ODBC)
      AC_LINK_IFELSE(
        [AC_LANG_PROGRAM([[#include <sql.h>
 #include <sqlext.h>
 #include <stdio.h>]],
            [[SQLSetEnvAttr(SQL_NULL_HANDLE, SQL_ATTR_CONNECTION_POOLING, (void*)SQL_CP_ONE_PER_HENV, 0)]])],
        [have_odbc_libs=yes],[have_odbc_libs=no])
      LIBS="$save_LIBS"
      if test "$have_odbc_libs" = no ; then
         if test "$odbc_enabled" = "yes" ; then
            AC_MSG_ERROR([unable to link with ODBC Library])
         else
            AC_MSG_RESULT([no, skipping ODBC])
         fi
      fi
   fi

   CPPFLAGS="$save_CPPFLAGS"
fi

# if have_odbc_libs=yes then go ahead with building ODBC
if test "$have_odbc_libs" = yes ; then
   # this AC_MSG_RESULT is from above!
   AC_MSG_RESULT(yes)
   WANT_SUBDIRS="$WANT_SUBDIRS odbc-store"
   AC_SUBST(ODBC_CFLAGS)
   AC_SUBST(ODBC_LIBS)
fi

# GSS-API checking

GSSAPI_ROOT="/usr"
AC_ARG_WITH(gssapi-includes,
  AS_HELP_STRING([--with-gssapi-includes=DIR],[Specify location of GSSAPI header]),
  [ GSSAPI_INCS="-I$withval"
    want_gss="yes" ]
)

AC_ARG_WITH(gssapi-libs,
  AS_HELP_STRING([--with-gssapi-libs=DIR],[Specify location of GSSAPI libs]),
  [ GSSAPI_LIB_DIR="-L$withval"
    want_gss="yes" ]
)

AC_ARG_WITH(gssapi,
  AS_HELP_STRING([--with-gssapi=DIR],[Where to look for GSSAPI]),
  [ GSSAPI_ROOT="$withval"
  if test x"$GSSAPI_ROOT" != xno; then
    want_gss="yes"
    if test x"$GSSAPI_ROOT" = xyes; then
      dnl if yes, then use default root
      GSSAPI_ROOT="/usr"
    fi
  fi
])

save_CPPFLAGS="$CPPFLAGS"
AC_MSG_CHECKING([if GSSAPI support is requested])
if test x"$want_gss" = xyes; then
  AC_MSG_RESULT(yes)

  if test -z "$GSSAPI_INCS"; then
     if test -f "$GSSAPI_ROOT/bin/krb5-config"; then
        GSSAPI_INCS=`$GSSAPI_ROOT/bin/krb5-config --cflags gssapi`
     elif test "$GSSAPI_ROOT" != "yes"; then
        GSSAPI_INCS="-I$GSSAPI_ROOT/include"
     fi
  fi

  CPPFLAGS="$CPPFLAGS $GSSAPI_INCS"

  AC_CHECK_HEADER(gss.h,
    [
      dnl found in the given dirs
      AC_DEFINE([SHIBSP_HAVE_GSSGNU],[1],[if you have the GNU gssapi libraries])
      gnu_gss=yes
    ],
    [
      dnl not found, check Heimdal or MIT
      AC_CHECK_HEADERS([gssapi/gssapi.h], [], [not_mit=1])
      AC_CHECK_HEADERS(
        [gssapi/gssapi_generic.h gssapi/gssapi_krb5.h],
        [],
        [not_mit=1],
        [
AC_INCLUDES_DEFAULT
#ifdef HAVE_GSSAPI_GSSAPI_H
#include <gssapi/gssapi.h>
#endif
        ])
      if test "x$not_mit" = "x1"; then
        dnl MIT not found, check for Heimdal
        AC_CHECK_HEADER([gssapi.h],
            [
              dnl found
              AC_DEFINE([SHIBSP_HAVE_GSSHEIMDAL],[1],[if you have the Heimdal gssapi libraries])
            ],
            [
              dnl no header found, disabling GSS
              want_gss=no
              AC_MSG_WARN([disabling GSSAPI since no header files was found])
            ]
          )
      else
        dnl MIT found
        AC_DEFINE([SHIBSP_HAVE_GSSMIT],[1],[if you have the MIT gssapi libraries])
        dnl check if we have a really old MIT kerberos (<= 1.2)
        AC_MSG_CHECKING([if gssapi headers declare GSS_C_NT_HOSTBASED_SERVICE])
        AC_COMPILE_IFELSE([
          AC_LANG_PROGRAM([[
#include <gssapi/gssapi.h>
#include <gssapi/gssapi_generic.h>
#include <gssapi/gssapi_krb5.h>
          ]],[[
            gss_import_name(
                            (OM_uint32 *)0,
                            (gss_buffer_t)0,
                            GSS_C_NT_HOSTBASED_SERVICE,
                            (gss_name_t *)0);
          ]])
        ],[
          AC_MSG_RESULT([yes])
        ],[
          AC_MSG_RESULT([no])
          AC_DEFINE([HAVE_OLD_GSSMIT],[1],[if you have an old MIT gssapi library, lacking GSS_C_NT_HOSTBASED_SERVICE])
        ])
      fi
    ]
  )
else
  AC_MSG_RESULT(no)
fi
if test x"$want_gss" = xyes; then
  AC_DEFINE([SHIBSP_HAVE_GSSAPI],[1],[if you have the gssapi libraries])

  if test -n "$gnu_gss"; then
    LDFLAGS="$LDFLAGS $GSSAPI_LIB_DIR"
    LIBS="$LIBS -lgss"
  else
    if test -z "$GSSAPI_LIB_DIR"; then
      GSSAPI_LIB_DIR="$GSSAPI_ROOT/lib$libsuff"
    fi
    if test "$GSSAPI_ROOT" != "yes"; then
       LDFLAGS="$LDFLAGS -L$GSSAPI_ROOT/lib$libsuff"
    fi
    if test -f "$GSSAPI_ROOT/bin/krb5-config"; then
      dnl krb5-config doesn't have --libs-only-L or similar, put everything
      dnl into LIBS
      gss_libs=`$GSSAPI_ROOT/bin/krb5-config --libs gssapi`
    else
      if test "x$not_mit" = "x1"; then
        gss_libs="-lgssapi"
      else
        gss_libs="-lgssapi_krb5"
      fi
    fi
    LIBS="$LIBS $gss_libs"
  fi

  AC_MSG_CHECKING([whether GSS-API naming extensions are available])
  AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[
#ifdef SHIBSP_HAVE_GSSGNU
# include <gss.h>
#elif defined SHIBSP_HAVE_GSSMIT
# include <gssapi/gssapi.h>
# include <gssapi/gssapi_ext.h>
#else
# include <gssapi.h>
#endif]],
    [[gss_get_name_attribute(NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);]])],
    [AC_MSG_RESULT([yes])AC_DEFINE([HAVE_GSSAPI_NAMINGEXTS],[1],[Define to 1 if GSS-API naming extensions are available.])],
    [AC_MSG_RESULT([no])])

  AC_MSG_CHECKING([whether GSS-API composite name import is available])
  AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[
#ifdef SHIBSP_HAVE_GSSGNU
# include <gss.h>
#elif defined SHIBSP_HAVE_GSSMIT
# include <gssapi/gssapi.h>
# include <gssapi/gssapi_ext.h>
#else
# include <gssapi.h>
#endif]],
    [[
    OM_uint32 minor;
    gss_name_t srcname;
    gss_buffer_desc importbuf;
    gss_import_name(&minor, &importbuf, GSS_C_NT_EXPORT_NAME_COMPOSITE, &srcname);
    ]])],
    [AC_MSG_RESULT([yes])AC_DEFINE([HAVE_GSSAPI_COMPOSITE_NAME],[1],[Define to 1 if GSS-API composite name import is available.])],
    [AC_MSG_RESULT([no])])
    
else
  CPPFLAGS="$save_CPPFLAGS"
fi


AC_SUBST(WANT_SUBDIRS)

if test -n "$APXS_CC" && test "$APXS_CC" != "$CC" ; then
  echo "=================================================================="
  echo "WARNING: You have chosen to compile Apache-1.3 modules with a different"
  echo "         compiler than the one used to compile Apache."
  echo ""
  echo "    Current compiler:      $CC"
  echo "   Apache's compiler:      $APXS_CC"
  echo ""
  echo "This could cause problems."
  echo "=================================================================="
fi

if test -n "$APXS2_CC" && test "$APXS2_CC" != "$CC" ; then
  echo "=================================================================="
  echo "WARNING: You have chosen to compile Apache-2.0 modules with a different"
  echo "         compiler than the one used to compile Apache."
  echo ""
  echo "    Current compiler:      $CC"
  echo "   Apache's compiler:      $APXS2_CC"
  echo ""
  echo "This could cause problems."
  echo "=================================================================="
fi

if test -n "$APXS22_CC" && test "$APXS22_CC" != "$CC" ; then
  echo "=================================================================="
  echo "WARNING: You have chosen to compile Apache-2.2 modules with a different"
  echo "         compiler than the one used to compile Apache."
  echo ""
  echo "    Current compiler:      $CC"
  echo "   Apache's compiler:      $APXS22_CC"
  echo ""
  echo "This could cause problems."
  echo "=================================================================="
fi

if test -n "$APXS24_CC" && test "$APXS24_CC" != "$CC" ; then
  echo "=================================================================="
  echo "WARNING: You have chosen to compile Apache-2.4 modules with a different"
  echo "         compiler than the one used to compile Apache."
  echo ""
  echo "    Current compiler:      $CC"
  echo "   Apache's compiler:      $APXS24_CC"
  echo ""
  echo "This could cause problems."
  echo "=================================================================="
fi

LIBTOOL="$LIBTOOL --silent"

AC_OUTPUT