dnl APACHE_HELP_STRING(LHS, RHS)

dnl Autoconf 2.50 can not handle substr correctly.  It does have 

dnl AC_HELP_STRING, so let's try to call it if we can.

dnl Note: this define must be on one line so that it can be properly returned

dnl as the help string.

AC_DEFUN([APACHE_HELP_STRING],[ifelse(regexp(AC_ACVERSION, 2\.1), -1, AC_HELP_STRING($1,$2),[  ]$1 substr([                       ],len($1))$2)])dnl

dnl APACHE_SUBST(VARIABLE)

dnl Makes VARIABLE available in generated files

dnl (do not use @variable@ in Makefiles, but $(variable))

AC_DEFUN([APACHE_SUBST],[

  APACHE_VAR_SUBST="$APACHE_VAR_SUBST $1"

  AC_SUBST($1)

])

dnl APACHE_FAST_OUTPUT(FILENAME)

dnl Perform substitutions on FILENAME (Makefiles only)

AC_DEFUN([APACHE_FAST_OUTPUT],[

  APACHE_FAST_OUTPUT_FILES="$APACHE_FAST_OUTPUT_FILES $1"

])

dnl APACHE_GEN_CONFIG_VARS

dnl Creates config_vars.mk

AC_DEFUN([APACHE_GEN_CONFIG_VARS],[

  APACHE_SUBST(HTTPD_VERSION)

  APACHE_SUBST(HTTPD_MMN)

  APACHE_SUBST(abs_srcdir)

  APACHE_SUBST(bindir)

  APACHE_SUBST(sbindir)

  APACHE_SUBST(cgidir)

  APACHE_SUBST(logfiledir)

  APACHE_SUBST(exec_prefix)

  APACHE_SUBST(datadir)

  APACHE_SUBST(localstatedir)

  APACHE_SUBST(mandir)

  APACHE_SUBST(libdir)

  APACHE_SUBST(libexecdir)

  APACHE_SUBST(htdocsdir)

  APACHE_SUBST(manualdir)

  APACHE_SUBST(includedir)

  APACHE_SUBST(errordir)

  APACHE_SUBST(iconsdir)

  APACHE_SUBST(sysconfdir)

  APACHE_SUBST(installbuilddir)

  APACHE_SUBST(runtimedir)

  APACHE_SUBST(proxycachedir)

  APACHE_SUBST(other_targets)

  APACHE_SUBST(progname)

  APACHE_SUBST(prefix)

  APACHE_SUBST(AWK)

  APACHE_SUBST(CC)

  APACHE_SUBST(CPP)

  APACHE_SUBST(CXX)

  APACHE_SUBST(CPPFLAGS)

  APACHE_SUBST(CFLAGS)

  APACHE_SUBST(CXXFLAGS)

  APACHE_SUBST(LTFLAGS)

  APACHE_SUBST(LDFLAGS)

  APACHE_SUBST(LT_LDFLAGS)

  APACHE_SUBST(SH_LDFLAGS)

  APACHE_SUBST(HTTPD_LDFLAGS)

  APACHE_SUBST(UTIL_LDFLAGS)

  APACHE_SUBST(LIBS)

  APACHE_SUBST(DEFS)

  APACHE_SUBST(INCLUDES)

  APACHE_SUBST(NOTEST_CPPFLAGS)

  APACHE_SUBST(NOTEST_CFLAGS)

  APACHE_SUBST(NOTEST_CXXFLAGS)

  APACHE_SUBST(NOTEST_LDFLAGS)

  APACHE_SUBST(NOTEST_LIBS)

  APACHE_SUBST(EXTRA_CPPFLAGS)

  APACHE_SUBST(EXTRA_CFLAGS)

  APACHE_SUBST(EXTRA_CXXFLAGS)

  APACHE_SUBST(EXTRA_LDFLAGS)

  APACHE_SUBST(EXTRA_LIBS)

  APACHE_SUBST(EXTRA_INCLUDES)

  APACHE_SUBST(INTERNAL_CPPFLAGS)

  APACHE_SUBST(LIBTOOL)

  APACHE_SUBST(SHELL)

  APACHE_SUBST(RSYNC)

  APACHE_SUBST(MODULE_DIRS)

  APACHE_SUBST(MODULE_CLEANDIRS)

  APACHE_SUBST(PORT)

  APACHE_SUBST(SSLPORT)

  APACHE_SUBST(CORE_IMPLIB_FILE)

  APACHE_SUBST(CORE_IMPLIB)

  APACHE_SUBST(SH_LIBS)

  APACHE_SUBST(SH_LIBTOOL)

  APACHE_SUBST(MK_IMPLIB)

  APACHE_SUBST(MKDEP)

  APACHE_SUBST(INSTALL_PROG_FLAGS)

  APACHE_SUBST(MPM_MODULES)

  APACHE_SUBST(ENABLED_MPM_MODULE)

  APACHE_SUBST(DSO_MODULES)

  APACHE_SUBST(ENABLED_DSO_MODULES)

  APACHE_SUBST(LOAD_ALL_MODULES)

  APACHE_SUBST(APR_BINDIR)

  APACHE_SUBST(APR_INCLUDEDIR)

  APACHE_SUBST(APR_VERSION)

  APACHE_SUBST(APR_CONFIG)

  APACHE_SUBST(APU_BINDIR)

  APACHE_SUBST(APU_INCLUDEDIR)

  APACHE_SUBST(APU_VERSION)

  APACHE_SUBST(APU_CONFIG)

  abs_srcdir="`(cd $srcdir && pwd)`"

  AC_MSG_NOTICE([creating config_vars.mk])

  test -d build || $mkdir_p build

  > build/config_vars.mk

  for i in $APACHE_VAR_SUBST; do

    eval echo "$i = \$$i" >> build/config_vars.mk

  done

])

dnl APACHE_GEN_MAKEFILES

dnl Creates Makefiles

AC_DEFUN([APACHE_GEN_MAKEFILES],[

  $SHELL $srcdir/build/fastgen.sh $srcdir $ac_cv_mkdir_p $BSD_MAKEFILE $APACHE_FAST_OUTPUT_FILES

])

dnl

dnl APACHE_TYPE_RLIM_T

dnl

dnl If rlim_t is not defined, define it to int

dnl

AC_DEFUN([APACHE_TYPE_RLIM_T], [

  AC_CACHE_CHECK([for rlim_t], ac_cv_type_rlim_t, [

    AC_TRY_COMPILE([

#include <sys/types.h>

#include <sys/time.h>

#include <sys/resource.h>

], [rlim_t spoon;], [

      ac_cv_type_rlim_t=yes

    ],[ac_cv_type_rlim_t=no

    ])

  ])

  if test "$ac_cv_type_rlim_t" = "no" ; then

      AC_DEFINE(rlim_t, int,

          [Define to 'int' if <sys/resource.h> doesn't define it for us])

  fi

])

dnl the list of build variables which are available for customization on a

dnl per module subdir basis (to be inserted into modules.mk with a "MOD_"

dnl prefix, i.e. MOD_CFLAGS etc.). Used in APACHE_MODPATH_{INIT,FINISH}.

define(mod_buildvars, [CFLAGS CXXFLAGS CPPFLAGS LDFLAGS LIBS INCLUDES])

dnl

dnl APACHE_MODPATH_INIT(modpath)

AC_DEFUN([APACHE_MODPATH_INIT],[

  current_dir=$1

  modpath_current=modules/$1

  modpath_static=

  modpath_shared=

  for var in mod_buildvars; do

    eval MOD_$var=

  done

  test -d $1 || $srcdir/build/mkdir.sh $modpath_current

  > $modpath_current/modules.mk

])dnl

dnl

AC_DEFUN([APACHE_MODPATH_FINISH],[

  echo "DISTCLEAN_TARGETS = modules.mk" >> $modpath_current/modules.mk

  echo "static = $modpath_static" >> $modpath_current/modules.mk

  echo "shared = $modpath_shared" >> $modpath_current/modules.mk

  for var in mod_buildvars; do

    if eval val=\"\$MOD_$var\"; test -n "$val"; then

      echo "MOD_$var = $val" >> $modpath_current/modules.mk

    fi

  done

  if test ! -z "$modpath_static" -o ! -z "$modpath_shared"; then

    MODULE_DIRS="$MODULE_DIRS $current_dir"

  else

    MODULE_CLEANDIRS="$MODULE_CLEANDIRS $current_dir"

  fi

  APACHE_FAST_OUTPUT($modpath_current/Makefile)

])dnl

dnl

dnl APACHE_MODPATH_ADD(name[, shared[, objects [, ldflags[, libs]]]])

AC_DEFUN([APACHE_MODPATH_ADD],[

  if test -z "$3"; then

    objects="mod_$1.lo"

  else

    objects="$3"

  fi

  if test -z "$module_standalone"; then

    if test -z "$2"; then

      # The filename of a convenience library must have a "lib" prefix:

      libname="libmod_$1.la"

      BUILTIN_LIBS="$BUILTIN_LIBS $modpath_current/$libname"

      modpath_static="$modpath_static $libname"

      cat >>$modpath_current/modules.mk<

$libname: $objects

	\$(MOD_LINK) $objects $5

EOF

      if test ! -z "$5"; then

        APR_ADDTO(AP_LIBS, [$5])

      fi

    else

      apache_need_shared=yes

      libname="mod_$1.la"

      shobjects=`echo $objects | sed 's/\.lo/.slo/g'`

      modpath_shared="$modpath_shared $libname"

      cat >>$modpath_current/modules.mk<

$libname: $shobjects

	\$(SH_LINK) -rpath \$(libexecdir) -module -avoid-version $4 $objects $5

EOF

    fi

  fi

])dnl

dnl

dnl APACHE_MPM_MODULE(name[, shared[, objects[, config[, path[, libs]]]]])

dnl

dnl Provide information for building the MPM.  (Enablement is handled using

dnl --with-mpm/--enable-mpms-shared.)

dnl

dnl name     -- name of MPM, same as MPM directory name

dnl shared   -- "shared" to indicate shared module build, empty string otherwise

dnl objects  -- one or more .lo files to link into the MPM module (default: mpmname.lo)

dnl config   -- configuration logic to run if the MPM is enabled

dnl path     -- relative path to MPM (default: server/mpm/mpmname)

dnl libs     -- libs needed by this MPM

dnl

AC_DEFUN([APACHE_MPM_MODULE],[

    if ap_mpm_is_enabled $1; then

        if test -z "$3"; then

            objects="$1.lo"

        else

            objects="$3"

        fi

        if test -z "$5"; then

            mpmpath="server/mpm/$1"

        else

            mpmpath=$5

        fi

        dnl VPATH support

        test -d $mpmpath || $srcdir/build/mkdir.sh $mpmpath

        APACHE_FAST_OUTPUT($mpmpath/Makefile)

        if test -z "$2"; then

            APR_ADDTO(AP_LIBS, [$6])

            libname="lib$1.la"

            cat >$mpmpath/modules.mk<

$libname: $objects

	\$(MOD_LINK) $objects

DISTCLEAN_TARGETS = modules.mk

static = $libname

shared =

EOF

        else

            apache_need_shared=yes

            libname="mod_mpm_$1.la"

            shobjects=`echo $objects | sed 's/\.lo/.slo/g'`

            cat >$mpmpath/modules.mk<

$libname: $shobjects

	\$(SH_LINK) -rpath \$(libexecdir) -module -avoid-version $objects $6

DISTCLEAN_TARGETS = modules.mk

static =

shared = $libname

EOF

            MPM_MODULES="$MPM_MODULES mpm_$1"

            # add default MPM to LoadModule list

            if test $1 = $default_mpm; then

                ENABLED_MPM_MODULE="mpm_$1"

            fi

        fi

        $4

    fi

])dnl

dnl

dnl APACHE_MODULE(name, helptext[, objects[, structname[, default[, config[, prereq_module]]]]])

dnl

dnl default is one of:

dnl   yes    -- enabled by default. user must explicitly disable.

dnl   no     -- disabled under default, most, all. user must explicitly enable.

dnl   most   -- disabled by default. enabled explicitly or with most or all.

dnl   static -- enabled as static by default, must be explicitly changed.

dnl   ""     -- disabled under default, most. enabled explicitly or with all.

dnl             XXX: The arg must really be empty here. Passing an empty shell

dnl             XXX: variable doesn't work for some reason. This should be

dnl             XXX: fixed.

dnl

dnl basically: yes/no is a hard setting. "most" means follow the "most"

dnl            setting. otherwise, fall under the "all" setting.

dnl            explicit yes/no always overrides, except if the user selects

dnl            "reallyall".

dnl

dnl prereq_module is a module (without the "mod_" prefix) that must be enabled

dnl   if the current module is enabled.  If the current module is built

dnl   statically, prereq_module must be built statically, too.  If these

dnl   conditions are not fulfilled, configure will abort if the current module

dnl   has been enabled explicitly. Otherwise, configure will disable the

dnl   current module.

dnl   prereq_module's APACHE_MODULE() statement must have been processed

dnl   before the current APACHE_MODULE() statement.

dnl

AC_DEFUN([APACHE_MODULE],[

  AC_MSG_CHECKING(whether to enable mod_$1)

  define([optname],[--]ifelse($5,yes,disable,enable)[-]translit($1,_,-))dnl

  AC_ARG_ENABLE(translit($1,_,-),APACHE_HELP_STRING(optname(),$2),force_$1=$enableval,enable_$1=ifelse($5,,maybe-all,$5))

  undefine([optname])dnl

  _apmod_extra_msg=""

  dnl If the module was not explicitly requested, allow it to disable itself if

  dnl its pre-reqs fail.

  case "$enable_$1" in

    yes|static|shared)

      _apmod_required="yes"

      ;;

    *)

      _apmod_required="no"

      ;;

  esac

  if test "$enable_$1" = "static" -o "$enable_$1" = "shared"; then

    :

  elif test "$enable_$1" = "yes"; then

    enable_$1=$module_default

  elif test "$enable_$1" = "few"; then

    if test "$module_selection" = "few" -o "$module_selection" = "most" -o \

            "$module_selection" = "all" -o "$module_selection" = "reallyall"

    then

      enable_$1=$module_default

    else

      enable_$1=no

    fi

    _apmod_extra_msg=" ($module_selection)"

  elif test "$enable_$1" = "most"; then

    if test "$module_selection" = "most" -o "$module_selection" = "all" -o \

            "$module_selection" = "reallyall"

    then

      enable_$1=$module_default

    else

      enable_$1=no

    fi

    _apmod_extra_msg=" ($module_selection)"

  elif test "$enable_$1" = "all" -o "$enable_$1" = "maybe-all"; then

    if test "$module_selection" = "all" -o "$module_selection" = "reallyall"

    then

      enable_$1=$module_default

      _apmod_extra_msg=" ($module_selection)"

    else

      enable_$1=no

    fi

  elif test "$enable_$1" = "reallyall" -o "$enable_$1" = "no" ; then

    if test "$module_selection" = "reallyall" -a "$force_$1" != "no" ; then

      enable_$1=$module_default

      _apmod_extra_msg=" ($module_selection)"

    else

      enable_$1=no

    fi

  else

    enable_$1=no

  fi

  if test "$enable_$1" != "no"; then

    dnl If we plan to enable it, allow the module to run some autoconf magic

    dnl that may disable it because of missing dependencies.

    ifelse([$6$7],,:,

           [AC_MSG_RESULT([checking dependencies])

            ifelse([$7],,:,[m4_foreach([prereq],[$7],

                           [if test "$enable_[]prereq" = "no" ; then

                              enable_$1=no

                              AC_MSG_WARN("mod_[]prereq is disabled but required for mod_$1")

                            elif test "$enable_$1" = "static" && test "$enable_[]prereq" != "static" ; then

                              enable_$1=$enable_[]prereq

                              AC_MSG_WARN("building mod_$1 shared because mod_[]prereq is built shared")

                            el])se])

            ifelse([$6],,:,[  $6])

            ifelse([$7],,:,[fi])

            AC_MSG_CHECKING(whether to enable mod_$1)

            if test "$enable_$1" = "no"; then

              if test "$_apmod_required" = "no"; then

                _apmod_extra_msg=" (disabled)"

              else

                AC_MSG_ERROR([mod_$1 has been requested but can not be built due to prerequisite failures])

              fi

            fi])

  fi

  AC_MSG_RESULT($enable_$1$_apmod_extra_msg)

  if test "$enable_$1" != "no"; then

    case "$enable_$1" in

    static*)

      MODLIST="$MODLIST ifelse($4,,$1,$4)"

      if test "$1" = "so"; then

          sharedobjs=yes

      fi

      shared="";;

    *)

      sharedobjs=yes

      shared=yes

      DSO_MODULES="$DSO_MODULES $1"

      if test "$5" = "yes" ; then

        ENABLED_DSO_MODULES="${ENABLED_DSO_MODULES},$1"

      fi

      ;;

    esac

    define([modprefix], [MOD_]translit($1, [a-z-], [A-Z_]))

    APACHE_MODPATH_ADD($1, $shared, $3,, [\$(]modprefix[_LDADD)])

    APACHE_SUBST(modprefix[_LDADD])

    undefine([modprefix])

  fi

])dnl

dnl

dnl APACHE_ENABLE_MODULES

dnl

AC_DEFUN([APACHE_ENABLE_MODULES],[

  module_selection=most

  module_default=shared

  dnl Check whether we have DSO support.

  dnl If "yes", we build shared modules by default.

  APR_CHECK_APR_DEFINE(APR_HAS_DSO)

  if test $ac_cv_define_APR_HAS_DSO = "no"; then

    AC_MSG_WARN([Missing DSO support - building static modules by default.])

    module_default=static

  fi

  AC_ARG_ENABLE(modules,

  APACHE_HELP_STRING(--enable-modules=MODULE-LIST,Space-separated list of modules to enable | "all" | "most" | "few" | "none" | "reallyall"),[

    if test "$enableval" = "none"; then

       module_default=no

       module_selection=none

    else

      for i in $enableval; do

        if test "$i" = "all" -o "$i" = "most" -o "$i" = "few" -o "$i" = "reallyall"

        then

          module_selection=$i

        else

          i=`echo $i | sed 's/-/_/g'`

          eval "enable_$i=shared"

        fi

      done

    fi

  ])

  AC_ARG_ENABLE(mods-shared,

  APACHE_HELP_STRING(--enable-mods-shared=MODULE-LIST,Space-separated list of shared modules to enable | "all" | "most" | "few" | "reallyall"),[

    for i in $enableval; do

      if test "$i" = "all" -o "$i" = "most" -o "$i" = "few" -o "$i" = "reallyall"

      then

        module_selection=$i

        module_default=shared

      else

        i=`echo $i | sed 's/-/_/g'`

    	eval "enable_$i=shared"

      fi

    done

  ])

  AC_ARG_ENABLE(mods-static,

  APACHE_HELP_STRING(--enable-mods-static=MODULE-LIST,Space-separated list of static modules to enable | "all" | "most" | "few" | "reallyall"),[

    for i in $enableval; do

      if test "$i" = "all" -o "$i" = "most" -o "$i" = "few" -o "$i" = "reallyall"; then

        module_selection=$i

        module_default=static

      else

        i=`echo $i | sed 's/-/_/g'`

    	eval "enable_$i=static"

      fi

    done

  ])

])

AC_DEFUN([APACHE_REQUIRE_CXX],[

  if test -z "$apache_cxx_done"; then

    AC_PROG_CXX

    AC_PROG_CXXCPP

    apache_cxx_done=yes

  fi

])

dnl

dnl APACHE_CHECK_OPENSSL

dnl

dnl Configure for OpenSSL, giving preference to

dnl "--with-ssl=<path>" if it was specified.

dnl

AC_DEFUN([APACHE_CHECK_OPENSSL],[

  AC_CACHE_CHECK([for OpenSSL], [ac_cv_openssl], [

    dnl initialise the variables we use

    ac_cv_openssl=no

    ap_openssl_found=""

    ap_openssl_base=""

    ap_openssl_libs=""

    ap_openssl_mod_cflags=""

    ap_openssl_mod_ldflags=""

    dnl Determine the OpenSSL base directory, if any

    AC_MSG_CHECKING([for user-provided OpenSSL base directory])

    AC_ARG_WITH(ssl, APACHE_HELP_STRING(--with-ssl=PATH,OpenSSL installation directory), [

      dnl If --with-ssl specifies a directory, we use that directory

      if test "x$withval" != "xyes" -a "x$withval" != "x"; then

        dnl This ensures $withval is actually a directory and that it is absolute

        ap_openssl_base="`cd $withval ; pwd`"

      fi

    ])

    if test "x$ap_openssl_base" = "x"; then

      AC_MSG_RESULT(none)

    else

      AC_MSG_RESULT($ap_openssl_base)

    fi

    dnl Run header and version checks

    saved_CPPFLAGS="$CPPFLAGS"

    saved_LIBS="$LIBS"

    saved_LDFLAGS="$LDFLAGS"

    dnl Before doing anything else, load in pkg-config variables

    if test -n "$PKGCONFIG"; then

      saved_PKG_CONFIG_PATH="$PKG_CONFIG_PATH"

      if test "x$ap_openssl_base" != "x" -a \

              -f "${ap_openssl_base}/lib/pkgconfig/openssl.pc"; then

        dnl Ensure that the given path is used by pkg-config too, otherwise

        dnl the system openssl.pc might be picked up instead.

        PKG_CONFIG_PATH="${ap_openssl_base}/lib/pkgconfig${PKG_CONFIG_PATH+:}${PKG_CONFIG_PATH}"

        export PKG_CONFIG_PATH

      fi

      AC_ARG_ENABLE(ssl-staticlib-deps,APACHE_HELP_STRING(--enable-ssl-staticlib-deps,[link mod_ssl with dependencies of OpenSSL's static libraries (as indicated by "pkg-config --static"). Must be specified in addition to --enable-ssl.]), [

        if test "$enableval" = "yes"; then

          PKGCONFIG_LIBOPTS="--static"

        fi

      ])

      ap_openssl_libs="`$PKGCONFIG $PKGCONFIG_LIBOPTS --libs-only-l --silence-errors openssl`"

      if test $? -eq 0; then

        ap_openssl_found="yes"

        pkglookup="`$PKGCONFIG --cflags-only-I openssl`"

        APR_ADDTO(CPPFLAGS, [$pkglookup])

        APR_ADDTO(MOD_CFLAGS, [$pkglookup])

        APR_ADDTO(ab_CFLAGS, [$pkglookup])

        pkglookup="`$PKGCONFIG $PKGCONFIG_LIBOPTS --libs-only-L openssl`"

        APR_ADDTO(LDFLAGS, [$pkglookup])

        APR_ADDTO(MOD_LDFLAGS, [$pkglookup])

        pkglookup="`$PKGCONFIG $PKGCONFIG_LIBOPTS --libs-only-other openssl`"

        APR_ADDTO(LDFLAGS, [$pkglookup])

        APR_ADDTO(MOD_LDFLAGS, [$pkglookup])

      fi

      PKG_CONFIG_PATH="$saved_PKG_CONFIG_PATH"

    fi

    dnl fall back to the user-supplied directory if not found via pkg-config

    if test "x$ap_openssl_base" != "x" -a "x$ap_openssl_found" = "x"; then

      APR_ADDTO(CPPFLAGS, [-I$ap_openssl_base/include])

      APR_ADDTO(MOD_CFLAGS, [-I$ap_openssl_base/include])

      APR_ADDTO(ab_CFLAGS, [-I$ap_openssl_base/include])

      APR_ADDTO(LDFLAGS, [-L$ap_openssl_base/lib])

      APR_ADDTO(MOD_LDFLAGS, [-L$ap_openssl_base/lib])

      if test "x$ap_platform_runtime_link_flag" != "x"; then

        APR_ADDTO(LDFLAGS, [$ap_platform_runtime_link_flag$ap_openssl_base/lib])

        APR_ADDTO(MOD_LDFLAGS, [$ap_platform_runtime_link_flag$ap_openssl_base/lib])

      fi

    fi

    AC_MSG_CHECKING([for OpenSSL version >= 0.9.8a])

    AC_TRY_COMPILE([#include <openssl/opensslv.h>],[

#if !defined(OPENSSL_VERSION_NUMBER)

#error "Missing OpenSSL version"

#endif

#if OPENSSL_VERSION_NUMBER < 0x0090801f

#error "Unsupported OpenSSL version " OPENSSL_VERSION_TEXT

#endif],

      [AC_MSG_RESULT(OK)

       ac_cv_openssl=yes],

      [AC_MSG_RESULT(FAILED)])

    if test "x$ac_cv_openssl" = "xyes"; then

      ap_openssl_libs="${ap_openssl_libs:--lssl -lcrypto} `$apr_config --libs`"

      APR_ADDTO(MOD_LDFLAGS, [$ap_openssl_libs])

      APR_ADDTO(LIBS, [$ap_openssl_libs])

      APR_SETVAR(ab_LIBS, [$MOD_LDFLAGS])

      APACHE_SUBST(ab_CFLAGS)

      APACHE_SUBST(ab_LIBS)

      dnl Run library and function checks

      liberrors=""

      AC_CHECK_HEADERS([openssl/engine.h])

      AC_CHECK_FUNCS([SSL_CTX_new], [], [liberrors="yes"])

      AC_CHECK_FUNCS([ENGINE_init ENGINE_load_builtin_engines RAND_egd])

      if test "x$liberrors" != "x"; then

        AC_MSG_WARN([OpenSSL libraries are unusable])

      fi

    else

      AC_MSG_WARN([OpenSSL version is too old])

    fi

    dnl restore

    CPPFLAGS="$saved_CPPFLAGS"

    LIBS="$saved_LIBS"

    LDFLAGS="$saved_LDFLAGS"

    dnl cache MOD_LDFLAGS, MOD_CFLAGS

    ap_openssl_mod_cflags=$MOD_CFLAGS

    ap_openssl_mod_ldflags=$MOD_LDFLAGS

  ])

  if test "x$ac_cv_openssl" = "xyes"; then

    AC_DEFINE(HAVE_OPENSSL, 1, [Define if OpenSSL is available])

    APR_ADDTO(MOD_LDFLAGS, [$ap_openssl_mod_ldflags])

    APR_ADDTO(MOD_CFLAGS, [$ap_openssl_mod_cflags])

  fi

])

dnl

dnl APACHE_EXPORT_ARGUMENTS

dnl Export (via APACHE_SUBST) the various path-related variables that

dnl apache will use while generating scripts like autoconf and apxs and

dnl the default config file.

AC_DEFUN([APACHE_SUBST_EXPANDED_ARG],[

  APR_EXPAND_VAR(exp_$1, [$]$1)

  APACHE_SUBST(exp_$1)

  APR_PATH_RELATIVE(rel_$1, [$]exp_$1, ${prefix})

  APACHE_SUBST(rel_$1)

])

AC_DEFUN([APACHE_EXPORT_ARGUMENTS],[

  APACHE_SUBST_EXPANDED_ARG(exec_prefix)

  APACHE_SUBST_EXPANDED_ARG(bindir)

  APACHE_SUBST_EXPANDED_ARG(sbindir)

  APACHE_SUBST_EXPANDED_ARG(libdir)

  APACHE_SUBST_EXPANDED_ARG(libexecdir)

  APACHE_SUBST_EXPANDED_ARG(mandir)

  APACHE_SUBST_EXPANDED_ARG(sysconfdir)

  APACHE_SUBST_EXPANDED_ARG(datadir)

  APACHE_SUBST_EXPANDED_ARG(installbuilddir)

  APACHE_SUBST_EXPANDED_ARG(errordir)

  APACHE_SUBST_EXPANDED_ARG(iconsdir)

  APACHE_SUBST_EXPANDED_ARG(htdocsdir)

  APACHE_SUBST_EXPANDED_ARG(manualdir)

  APACHE_SUBST_EXPANDED_ARG(cgidir)

  APACHE_SUBST_EXPANDED_ARG(includedir)

  APACHE_SUBST_EXPANDED_ARG(localstatedir)

  APACHE_SUBST_EXPANDED_ARG(runtimedir)

  APACHE_SUBST_EXPANDED_ARG(logfiledir)

  APACHE_SUBST_EXPANDED_ARG(proxycachedir)

])

dnl 

dnl APACHE_CHECK_APxVER({apr|apu}, major, minor, 

dnl                     [actions-if-ok], [actions-if-not-ok])

dnl

dnl Checks for APR or APR-util of given major/minor version or later; 

dnl if so, runs actions-if-ok; otherwise runs actions-if-not-ok if given.

dnl If the version is not satisfactory and actions-if-not-ok is not

dnl given, then an error is printed and the configure script is aborted.

dnl

dnl The first argument must be [apr] or [apu].

dnl

AC_DEFUN([APACHE_CHECK_APxVER], [

define(ap_ckver_major, translit($1, [apru], [APRU])[_MAJOR_VERSION])

define(ap_ckver_minor, translit($1, [apru], [APRU])[_MINOR_VERSION])

define(ap_ckver_cvar, [ap_cv_$1ver$2$3])

define(ap_ckver_name, ifelse([$1],[apr],[APR],[APR-util]))

ap_ckver_CPPFLAGS="$CPPFLAGS"

CPPFLAGS="$CPPFLAGS `$[$1]_config --includes`"

AC_CACHE_CHECK([for ap_ckver_name version $2.$3.0 or later], ap_ckver_cvar, [

AC_EGREP_CPP([good], [

#include <$1_version.h>

#if ]ap_ckver_major[ > $2 || (]ap_ckver_major[ == $2 && ]ap_ckver_minor[ >= $3)

good

#endif

], [ap_ckver_cvar=yes], [ap_ckver_cvar=no])])

if test "$ap_ckver_cvar" = "yes"; then

  ifelse([$4],[],[:],[$4])

else

  ifelse([$5],[],[AC_MSG_ERROR([ap_ckver_name version $2.$3.0 or later is required])], [$5])

fi

CPPFLAGS="$ap_ckver_CPPFLAGS"

undefine([ap_ckver_major])

undefine([ap_ckver_minor])

undefine([ap_ckver_cvar])

undefine([ap_ckver_name])

])

dnl

dnl APACHE_CHECK_VOID_PTR_LEN

dnl

dnl Checks if the size of a void pointer is at least as big as a "long" 

dnl integer type.

dnl

AC_DEFUN([APACHE_CHECK_VOID_PTR_LEN], [

AC_CACHE_CHECK([for void pointer length], [ap_cv_void_ptr_lt_long],

[AC_TRY_RUN([

int main(void)

{

    return sizeof(void *) < sizeof(long); 

}], [ap_cv_void_ptr_lt_long=no], [ap_cv_void_ptr_lt_long=yes], 

    [ap_cv_void_ptr_lt_long=yes])])

if test "$ap_cv_void_ptr_lt_long" = "yes"; then

    AC_MSG_ERROR([Size of "void *" is less than size of "long"])

fi

])

dnl

dnl APACHE_CHECK_APR_HAS_LDAP

dnl

dnl Check if APR_HAS_LDAP is 1

dnl Unfortunately, we can't use APR_CHECK_APR_DEFINE (because it only includes apr.h)

dnl or APR_CHECK_DEFINE (because it only checks for defined'ness and not for 0/1).

dnl

AC_DEFUN([APACHE_CHECK_APR_HAS_LDAP], [

  AC_CACHE_CHECK([for ldap support in apr/apr-util],ac_cv_APR_HAS_LDAP,[

    apache_old_cppflags="$CPPFLAGS"

    CPPFLAGS="$CPPFLAGS $INCLUDES"

    AC_EGREP_CPP(YES_IS_DEFINED, [

#include <apr_ldap.h>

#if APR_HAS_LDAP

YES_IS_DEFINED

#endif

    ], ac_cv_APR_HAS_LDAP=yes, ac_cv_APR_HAS_LDAP=no)

    CPPFLAGS="$apache_old_cppflags"

  ])

])

dnl

dnl APACHE_ADD_GCC_CFLAG

dnl

dnl Check if compiler is gcc and supports flag. If yes, add to NOTEST_CFLAGS.

dnl NOTEST_CFLAGS is merged lately, thus it won't accumulate in CFLAGS here.

dnl Also, AC_LANG_PROGRAM() itself is known to trigger [-Wstrict-prototypes]

dnl with some autoconf versions, so we force -Wno-strict-prototypes for the

dnl check to avoid spurious failures when adding flags like -Werror.

dnl

AC_DEFUN([APACHE_ADD_GCC_CFLAG], [

  define([ap_gcc_ckvar], [ac_cv_gcc_]translit($1, [-:.=], [____]))

  if test "$GCC" = "yes"; then

    AC_CACHE_CHECK([whether gcc accepts $1], ap_gcc_ckvar, [

      save_CFLAGS="$CFLAGS"

      CFLAGS="$CFLAGS $1 -Wno-strict-prototypes"

      AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],

        [ap_gcc_ckvar=yes], [ap_gcc_ckvar=no])

      CFLAGS="$save_CFLAGS"

    ])

    if test "$]ap_gcc_ckvar[" = "yes" ; then

       APR_ADDTO(NOTEST_CFLAGS,[$1])

    fi

  fi

  undefine([ap_gcc_ckvar])

])