File: configure

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#!/bin/sh
## ====================================================================
## Copyright (c) 1998 The Apache Group.  All rights reserved.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions
## are met:
##
## 1. Redistributions of source code must retain the above copyright
##    notice, this list of conditions and the following disclaimer. 
##
## 2. Redistributions in binary form must reproduce the above copyright
##    notice, this list of conditions and the following disclaimer in
##    the documentation and/or other materials provided with the
##    distribution.
##
## 3. All advertising materials mentioning features or use of this
##    software must display the following acknowledgment:
##    "This product includes software developed by the Apache Group
##    for use in the Apache HTTP server project (http://www.apache.org/)."
##
## 4. The names "Apache Server" and "Apache Group" must not be used to
##    endorse or promote products derived from this software without
##    prior written permission. For written permission, please contact
##    apache@apache.org.
##
## 5. Products derived from this software may not be called "Apache"
##    nor may "Apache" appear in their names without prior written
##    permission of the Apache Group.
##
## 6. Redistributions of any form whatsoever must retain the following
##    acknowledgment:
##    "This product includes software developed by the Apache Group
##    for use in the Apache HTTP server project (http://www.apache.org/)."
##
## THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
## EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
## PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE APACHE GROUP OR
## ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
## NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
## LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
## STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
## ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
## OF THE POSSIBILITY OF SUCH DAMAGE.
## ====================================================================
##
## This software consists of voluntary contributions made by many
## individuals on behalf of the Apache Group and was originally based
## on public domain software written at the National Center for
## Supercomputing Applications, University of Illinois, Urbana-Champaign.
## For more information on the Apache Group and the Apache HTTP server
## project, please see <http://www.apache.org/>.
##

##
##  configure -- Apache Autoconf-style Interface (APACI) 
##
##  Written by Ralf S. Engelschall <rse@apache.org>
##

#   default input separator chars: <space><tab><cr>
DIFS=' 	
'

##
##  the paths to the Apache source tree
##

top=.
mkf=Makefile
src=src
aux=src/helpers
sedsubst=src/.apaci.sedsubst
addconf=src/.apaci.addconf
configstatus=config.status

##
##  pre-determine runtime modes
##

help=no
quiet=no
verbose=no
case "$*" in
    --help|*--help|*--help* ) help=yes; quiet=yes ;;
    --quiet|*--quiet|*--quiet* ) quiet=yes ;;
    --verbose|*--verbose|*--verbose*|-v|*-v|*-v* ) verbose=yes ;;
    * ) ;;
esac

##
##  display version information
##

if [ ".$quiet" = .no ]; then
    APV=`cat $src/include/httpd.h |\
         grep "#define SERVER_BASEVERSION" |\
         sed -e 's/^[^"]*"//' -e 's/".*$//' -e 's/^Apache\///'`
    echo "Configuring for Apache, Version $APV"
fi

##
##  important hint for the first-time users
##

if [ $# -eq 0 ]; then
    echo " + Warning: Configuring Apache with default settings."
    echo " + This is probably not what you really want."
    echo " + Please read the README.configure and INSTALL files"
    echo " + first or at least run '$0 --help' for"
    echo " + a compact summary of available options."
fi

##
##  determine path to (optional) Perl interpreter
##

PERL=no-perl-on-this-system
perlpath="`$aux/PrintPath perl5 perl miniperl`"
if [ ".$perlpath" != . ]; then
    PERL="$perlpath"
fi

##
##  look for deadly broken echo commands which interpret escape
##  sequences `\XX' *per default*. For those we first try the -E option
##  and if it then is still broken we give a warning message.
##  If it works set the `Safe Echo Option' (SEO) variable.
##

SEO='' # CHANGE THIS VARIABLE HERE IF YOU HAVE PROBLEMS WITH ECHO!
bytes=`echo $SEO '\1' | wc -c | awk '{ printf("%s", $1); }'`
if [ ".$bytes" != .3 ]; then
    bytes=`echo -E '\1' | wc -c | awk '{ printf("%s", $1); }'`
    if [ ".$bytes" != .3 ]; then
        echo " + Warning: Your 'echo' command is slightly broken."
        echo " + It interprets escape sequences per default. We already"
        echo " + tried 'echo -E' but had no real success. If errors occur"
        echo " + please set the SEO variable in 'configure' manually to"
        echo " + the required 'echo' options, i.e. those which force your"
        echo " + 'echo' to not interpret escape sequences per default."
    else
        SEO='-E'
    fi
fi

##
##  look for the best Awk we can find because some
##  standard Awks are really braindead and cause 
##  problems for our scripts under some platforms.
##

AWK=awk
awkpath="`$aux/PrintPath nawk gawk awk`"
if [ ".$awkpath" != . ]; then
    AWK="$awkpath"
fi

##
##  determine default parameters
##

#   default paths
prefix='/usr/local/apache'
exec_prefix='$prefix'
bindir='$exec_prefix/bin'
sbindir='$exec_prefix/sbin'
libexecdir='$exec_prefix/libexec'
mandir='$prefix/man'
sysconfdir='$prefix/etc'
datadir='$prefix/share'
includedir='$prefix/include'
localstatedir='$prefix/var'
runtimedir='$localstatedir/run'
logfiledir='$localstatedir/log'
proxycachedir='$localstatedir/proxy'

#   customization flags for
#   automatic "apache" suffix 
customized_sysconfdir=0
customized_datadir=0
customized_localstatedir=0
customized_includedir=0

#   check and debug
layout=0

#   suexec defaults
suexec=0
suexec_ok=0
suexec_caller=www
suexec_userdir=public_html
suexec_uidmin=100
suexec_gidmin=100
suexec_safepath="/usr/local/bin:/usr/bin:/bin"

#   with support tools
support=1

#   with adjustments
confadjust=1

#   determine rules
rules=""
rulelist=""
OIFS="$IFS" IFS='
'
for rule in `grep '^Rule' $src/Configuration.tmpl`; do
    rule=`echo "$rule" | sed -e 's/^Rule[ ]*//'`
    name=`echo "$rule" | sed -e 's/=.*$//'`
    namelow=`echo "$name" | tr "A-Z" "a-z"`
    arg=`echo "$rule" | sed -e 's/^.*=//'`
    eval "rule_$namelow=$arg"
    rules="$rules:$namelow"
    rulelist="$rulelist:$name=$arg"
done
IFS="$OIFS"
rules=`echo $rules | sed -e 's/^://'`

#   determine modules
rm -f $addconf 2>/dev/null
touch $addconf
modules=""
modulelist=""
OIFS="$IFS" IFS='
'
for module in `egrep '^[# ]*(Add|Shared)Module' $src/Configuration.tmpl`; do
    add=yes
    share=no
    if [ ".`echo $module | grep '^#'`" != . ]; then
        add=no
    fi
    if [ ".`echo $module | grep 'SharedModule'`" != . ]; then
        share=yes
    fi
    module=`echo "$module" |\
            sed -e 's%^.*/\(.*\)$%\1%' \
                -e 's/\.[oa]$//' \
                -e 's/^mod_//' \
                -e 's/^lib//'`
    eval "module_$module=$add"
    eval "shared_$module=$share"
    modules="${modules}:$module"
    modulelist="${modulelist}:$module=$add"
    if [ ".$share" = .yes ]; then
        modulelist="${modulelist}*"
    fi
done
IFS="$OIFS"
modules=`echo $modules | sed -e 's/^://'`

#   backward compatibility from old src/Configuration.tmpl
#   parameter names to the canonical Autoconf-style shell
#   variable names.
OIFS="$IFS" IFS="$DIFS"
for var in CFLAGS LDFLAGS LIBS INCLUDES DEPS; do
    eval "val=\$EXTRA_$var"
    if [ ".$val" != . ]; then
        eval "$var=\$val"
        eval "EXTRA_$var=\"\"; export EXTRA_$var"
        echo " + Hint: please use $var instead of EXTRA_$var next time"
    fi
done
IFS="$OIFS"

#   create a config status script for restoring
#   the configuration via a simple shell script
if [ ".$help" = .no ]; then
    rm -f $configstatus 2>/dev/null
    echo "#!/bin/sh" >$configstatus
    echo "##" >>$configstatus
    echo "##  $configstatus -- APACI auto-generated configuration restore script" >>$configstatus
    echo "##" >>$configstatus
    echo "##  Use this shell script to re-run the APACI configure script for" >>$configstatus
    echo "##  restoring your configuration. Additional parameters can be supplied." >>$configstatus
    echo "##" >>$configstatus
    echo "" >>$configstatus
    for var in CC CPP OPTIM CFLAGS CFLAGS_SHLIB LDFLAGS LD_SHLIB LDFLAGS_SHLIB \
               LDFLAGS_SHLIB_EXPORT LIBS INCLUDES RANLIB; do
        eval "val=\"\$$var\""
        if [ ".$val" != . ]; then
            echo "$var=$val" |\
            sed -e 's:\(["$\\]\):\\\1:g' \
                -e 's:\([A-Z]*=\):\1":' \
                -e 's:$:" \\:' >>$configstatus
        fi
    done
    if [ $# -eq 0 ]; then
        echo "./configure" >>$configstatus
    else
        echo $SEO "./configure \\" >>$configstatus
        for arg
        do
            echo "$arg" |\
            sed -e 's:\(["$\\]\):\\\1:g' \
                -e 's:^:":' \
                -e 's:$:" \\:' >>$configstatus
        done
    fi
    echo '"$@"' >>$configstatus
    echo '' >>$configstatus
    chmod a+x $configstatus
fi

##
##  parse argument line options
##

apc_prev=""
OIFS1="$IFS" IFS="$DIFS"
for apc_option
do
    #   if previous option needs an argument, assign it.
    if [ ".$apc_prev" != . ]; then
        eval "$apc_prev=\$apc_option"
        apc_prev=""
        continue
    fi
    #   split out arguments
    case "$apc_option" in
        -*=*) apc_optarg=`echo "$apc_option" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
           *) apc_optarg= ;;
    esac

    #  accept only the most important GNU Autoconf-style options
    case "$apc_option" in
        --quiet | --silent) 
            quiet=yes
            ;;
        --verbose | -v)
            verbose=yes
            ;;
        --shadow)
            #   determine GNU platform triple
            gnutriple=`$aux/GuessOS | sed -e 's:/:-:g' | $AWK '{ printf("%s",$1); }'`
            #   create Makefile wrapper (the first time only)
            if [ ".`ls $top/src.* 2>/dev/null`" = . ]; then
                if [ .$quiet = .no ]; then
                    echo " + creating Makefile (shadow wrapper)"
                fi
                echo "##" > Makefile
                echo "##  Apache Makefile (shadow wrapper)" >> Makefile
                echo "##" >> Makefile
                echo "" >> Makefile
                echo "GNUTRIPLE=\`$aux/GuessOS | sed -e 's:/:-:g' | $AWK '{ printf(\"%s\",\$\$1); }'\`" >> Makefile
                echo "" >> Makefile
                echo "all build install install-quiet clean distclean:" >> Makefile
                echo "	@\$(MAKE) -f Makefile.\$(GNUTRIPLE) \$(MFLAGS) \$@" >> Makefile
                echo "" >> Makefile
            fi
            #   set shadow paths
            shadowmkf="Makefile.$gnutriple"
            shadowsrc="src.$gnutriple"
            shadowaux="src.$gnutriple/helpers"
            shadowsedsubst="src.$gnutriple/.apaci.sedsubst"
            shadowaddconf="src.$gnutriple/.apaci.addconf"
            #   (re)create shadow tree
            if [ .$quiet = .no ]; then
                echo " + create shadow tree ($shadowsrc)"
            fi
            rm -rf $shadowsrc
            $aux/mkshadow.sh $src $shadowsrc
            #   delegate us to the shadow paths
            mkf=$shadowmkf
            src=$shadowsrc
            aux=$shadowaux
            sedsubst=$shadowsedsubst
            rm -f $addconf 2>/dev/null
            addconf=$shadowaddconf
            rm -f $addconf 2>/dev/null
            touch $addconf
            ;;
        --help | -h | -help )
            echo "Usage: configure [options]"
            echo "Options: [defaults in brackets after descriptions]"
            echo "General options:"
            echo " --quiet, --silent      do not print messages"
            echo " --verbose, -v          print even more messages"
            echo " --shadow               switch to a shadow tree for building"
            echo ""
            echo "Stand-alone options:"
            echo " --help, -h             print this message"
            echo " --layout               print installation layout (check and debug)"
            echo ""
            echo "Installation layout options:"
            echo " --prefix=PREFIX        install architecture-independent files in PREFIX"
            echo " --exec-prefix=EPREFIX  install architecture-dependent files in EPREFIX"
            echo " --bindir=DIR           install user     executables in DIR  [EPREFIX/bin]"
            echo " --sbindir=DIR          install sysadmin executables in DIR  [EPREFIX/sbin]"
            echo " --libexecdir=DIR       install program  executables in DIR  [EPREFIX/libexec]"
            echo " --mandir=DIR           install manual pages in DIR          [PREFIX/man]"
            echo " --sysconfdir=DIR       install configuration files in DIR   [PREFIX/etc]"
            echo " --datadir=DIR          install read-only  data files in DIR [PREFIX/share]"
            echo " --includedir=DIR       install includes files in DIR        [PREFIX/include]"
            echo " --localstatedir=DIR    install modifiable data files in DIR [PREFIX/var]"
            echo " --runtimedir=DIR       install runtime data in DIR          [PREFIX/var/run]"
            echo " --logfiledir=DIR       install logfile data in DIR          [PREFIX/var/log]"
            echo " --proxycachedir=DIR    install proxy cache data in DIR      [PREFIX/var/proxy]"
            echo " --compat               install with old Apache 1.2 installation paths"
            echo ""
            echo "Configuration options:"
            echo " --enable-rule=NAME     enable  a particular Rule named 'NAME'"
            echo " --disable-rule=NAME    disable a particular Rule named 'NAME'"
            $aux/ppl.sh $rulelist
            echo " --add-module=FILE      on-the-fly copy & activate a third-party Module source"
            echo " --activate-module=FILE on-the-fly activate existing third-party Module source"
            echo " --enable-module=NAME   enable  a particular Module named 'NAME'"
            echo " --disable-module=NAME  disable a particular Module named 'NAME'"
            $aux/ppl.sh $modulelist
            echo " --enable-shared=NAME   enable  build of Module named 'NAME' as a shared object"
            echo " --disable-shared=NAME  disable build of Module named 'NAME' as a shared object"
            echo " --with-perl=FILE       set the path to the optional Perl interpreter to use"
            echo " --without-support      disable the build and installation of support tools"
            echo " --without-confadjust   disable some build user/situation adjustments to config files"
            echo ""
            echo "suEXEC options:"
            echo " --enable-suexec        enable the suEXEC feature"
            echo " --suexec-caller=NAME   set the suEXEC username of the allowed caller [$suexec_caller]"
            echo " --suexec-userdir=DIR   set the suEXEC user subdirectory [$suexec_userdir]"
            echo " --suexec-uidmin=UID    set the suEXEC minimal allowed UID [$suexec_uidmin]"
            echo " --suexec-gidmin=GID    set the suEXEC minimal allowed GID [$suexec_gidmin]"
            echo " --suexec-safepath=PATH set the suEXEC safe PATH [$suexec_safepath]"
            echo ""
            exit 0
            ;;
        --layout)
            layout=1
            ;;
        --prefix=*)
            prefix="$apc_optarg"
            ;;
        --exec-prefix=*)
            exec_prefix="$apc_optarg"
            ;;
        --bindir=*)       
            bindir="$apc_optarg"
            ;;
        --sbindir=*)       
            sbindir="$apc_optarg"
            ;;
        --libexecdir=*)
            libexecdir="$apc_optarg"    
            ;;
        --mandir=*)        
            mandir="$apc_optarg"        
            ;;
        --sysconfdir=*)    
            sysconfdir="$apc_optarg"    
            customized_sysconfdir=1
            ;;
        --datadir=*)       
            datadir="$apc_optarg"       
            customized_datadir=1
            ;;
        --includedir=*)       
            includedir="$apc_optarg"       
            customized_includedir=1
            ;;
        --localstatedir=*) 
            localstatedir="$apc_optarg" 
            customized_localstatedir=1
            ;;
        --runtimedir=*) 
            runtimedir="$apc_optarg" 
            ;;
        --logfiledir=*) 
            logfiledir="$apc_optarg" 
            ;;
        --proxycachedir=*) 
            proxycachedir="$apc_optarg" 
            ;;
        --compat) 
            exec_prefix='$prefix'
            bindir='$exec_prefix/bin'
            sbindir='$exec_prefix/bin'
            libexecdir='$exec_prefix/libexec'
            mandir='$prefix/man'
            sysconfdir='$prefix/conf'
            datadir='$prefix'
            includedir='$prefix/include'
            localstatedir='$prefix'
            runtimedir='$localstatedir/logs'
            logfiledir='$localstatedir/logs'
            proxycachedir='$localstatedir/proxy'
            customized_sysconfdir=1
            customized_datadir=1
            customized_localstatedir=1
            customized_includedir=1
            ;;
        --add-module=*) 
            file="$apc_optarg"
            if [ ".`echo $file | egrep '/?mod_[a-zA-Z0-9][a-zA-Z0-9_]*\.c$'`" = . ]; then
                echo "configure:Error: Module filename doesn't match '/?mod_[a-zA-Z0-9][a-zA-Z0-9_]*\.c'" 1>&2
                exit 1
            fi
            if [ ! -f $file ]; then
                echo "configure:Error: Module source $file not found" 1>&2
                exit 1
            fi
            modfilec=`echo $file | sed -e 's;^.*/;;'`
            modfileo=`echo $file | sed -e 's;^.*/;;' -e 's;\.c$;.o;'`
            if [ ".$file" != ".$src/modules/extra/$modfilec" ]; then
                cp $file $src/modules/extra/$modfilec
            fi
            echo "" >>$addconf
            echo "## On-the-fly added module" >>$addconf
            echo "## (configure --add-module=$file)" >>$addconf
            echo "AddModule modules/extra/$modfileo" >>$addconf
            module=`echo "$modfileo" |\
                    sed -e 's%^.*/\(.*\)$%\1%' \
                        -e 's/\.[^.]*$//' \
                        -e 's/^mod_//' \
                        -e 's/^lib//'`
            eval "module_$module=yes"
            eval "shared_$module=no"
            modules="${modules}:$module"
            modulelist="${modulelist}:$module=yes"
            if [ ".$quiet" = .no ]; then
                echo " + on-the-fly added and activated $module module (modules/extra/$modfileo)"
            fi
            ;;
        --activate-module=*) 
            file="$apc_optarg"
            case $file in
                src/modules/* ) ;;
                *)  echo "configure:Error: Module source already has to stay below src/modules/ to be activated" 1>&2
                    exit 1
                    ;;
            esac
            modfile=`echo $file | sed -e 's;^src/;;'`
            echo "" >>$addconf
            echo "## On-the-fly activated module" >>$addconf
            echo "## (configure --activate-module=$file)" >>$addconf
            echo "AddModule $modfile" >>$addconf
            module=`echo "$modfile" |\
                    sed -e 's%^.*/\(.*\)$%\1%' \
                        -e 's/\.[^.]*$//' \
                        -e 's/^mod_//' \
                        -e 's/^lib//'`
            eval "module_$module=yes"
            eval "shared_$module=no"
            modules="${modules}:$module"
            modulelist="${modulelist}:$module=yes"
            if [ ".$quiet" = .no ]; then
                echo " + activated $module module ($modfile)"
            fi
            ;;
        --enable-*)
            apc_feature=`echo $apc_option | sed -e 's/-*enable-//' -e 's/=.*//'`
            apc_feature=`echo $apc_feature | sed 's/-/_/g'`
            case "$apc_option" in
                *=*) ;;
                  *) apc_optarg=yes ;;
            esac
            case "$apc_feature" in
                rule   )
                    apc_optarg=`echo "$apc_optarg" | tr "A-Z" "a-z"`
                    apc_optarg_real=`echo "$apc_optarg" | tr "a-z" "A-Z"`
                    eval "exists=\$rule_${apc_optarg}" 
                    if [ ".$exists" = . ]; then
                        echo "configure:Error: No such rule named '${apc_optarg_real}'" 1>&2
                        exit 1
                    fi
                    eval "rule_${apc_optarg}=yes"
                    ;;
                module ) 
                    case $apc_optarg in
                       all ) 
                           OIFS="$IFS" IFS=':'
                           for module in $modules; do
                               eval "module_${module}=yes" 
                           done
                           IFS="$OIFS"
                           ;;
                       most ) 
                           OIFS="$IFS" IFS=':'
                           for module in $modules; do
                               eval "module_${module}=yes" 
                           done
                           IFS="$OIFS"
                           module_auth_db=no     # not all platforms have -ldb
                           module_mmap_static=no # not all platforms have mmap()
                           module_so=no          # not all platforms have dlopen()
                           module_example=no     # only for developers
                           module_log_agent=no   # deprecated
                           module_log_referer=no # deprecated
                           ;;
                       * ) 
                           eval "exists=\$module_${apc_optarg}" 
                           if [ ".$exists" = . ]; then
                               echo "configure:Error: No such module named '${apc_optarg}'" 1>&2
                               exit 1
                           fi
                           eval "module_${apc_optarg}=yes" 
                           ;;
                    esac
                    ;;
                shared ) 
                    case $apc_optarg in
                       max ) 
                           OIFS="$IFS" IFS=':'
                           for module in $modules; do
                               eval "shared_${module}=yes" 
                           done
                           IFS="$OIFS"
                           shared_so=no        # because of bootstrapping
                           ;;
                       remain ) 
                           OIFS="$IFS" IFS=':'
                           for module in $modules; do
                               eval "add=\$module_${module}" 
                               if [ ".$add" = .no ]; then
                                   eval "module_${module}=yes" 
                                   eval "shared_${module}=yes" 
                               fi
                           done
                           IFS="$OIFS"
                           shared_so=no
                           ;;
                       * ) 
                           eval "exists=\$module_${apc_optarg}" 
                           if [ ".$exists" = . ]; then
                               echo "configure:Error: No such module named '${apc_optarg}'" 1>&2
                               exit 1
                           fi
                           eval "shared_${apc_optarg}=yes" 
                           ;;
                    esac
                    ;;
                suexec ) 
                    suexec=1
                    ;;
            esac
            ;;
        --disable-*)
            apc_feature=`echo $apc_option | sed -e 's/-*disable-//' -e 's/=.*//'`
            apc_feature=`echo $apc_feature| sed 's/-/_/g'`
            case "$apc_option" in
                *=*) ;;
                  *) apc_optarg=yes ;;
            esac
            case "$apc_feature" in
                rule   ) 
                    apc_optarg=`echo "$apc_optarg" | tr "A-Z" "a-z"`
                    apc_optarg_real=`echo "$apc_optarg" | tr "a-z" "A-Z"`
                    eval "exists=\$rule_${apc_optarg}" 
                    if [ ".$exists" = . ]; then
                        echo "configure:Error: No such rule named '${apc_optarg_real}'" 1>&2
                        exit 1
                    fi
                    eval "rule_${apc_optarg}=no"
                    ;;
                module )
                    case $apc_optarg in
                       all ) 
                           OIFS="$IFS" IFS=':'
                           for module in $modules; do
                               eval "module_${module}=no" 
                           done
                           IFS="$OIFS"
                           ;;
                       * ) 
                           eval "exists=\$module_${apc_optarg}" 
                           if [ ".$exists" = . ]; then
                               echo "configure:Error: No such module named '${apc_optarg}'" 1>&2
                               exit 1
                           fi
                           eval "module_${apc_optarg}=no" 
                           ;;
                    esac
                    ;;
                shared )
                    case $apc_optarg in
                       all ) 
                           OIFS="$IFS" IFS=':'
                           for module in $modules; do
                               eval "shared_${module}=no" 
                           done
                           IFS="$OIFS"
                           ;;
                       * ) 
                           eval "exists=\$module_${apc_optarg}" 
                           if [ ".$exists" = . ]; then
                               echo "configure:Error: No such module named '${apc_optarg}'" 1>&2
                               exit 1
                           fi
                           eval "shared_${apc_optarg}=no" 
                           ;;
                    esac
                    ;;
            esac
            ;;
        --with-perl=*)
            PERL="$apc_optarg"
            ;;
        --without-support)
            support=0
            ;;
        --without-confadjust)
            confadjust=0
            ;;
        --suexec-caller=*)
            suexec_caller="$apc_optarg"
            suexec_ok=1
            ;;
        --suexec-userdir=*)
            suexec_userdir="$apc_optarg"
            suexec_ok=1
            ;;
        --suexec-uidmin=*)
            suexec_uidmin="$apc_optarg"
            suexec_ok=1
            ;;
        --suexec-gidmin=*)
            suexec_gidmin="$apc_optarg"
            suexec_ok=1
            ;;
        --suexec-safepath=*)
            suexec_safepath="$apc_optarg"
            suexec_ok=1
            ;;
        * )
            echo "configure:Error: invalid option '$apc_option'" 1>&2
            exit 1
            ;;
    esac
done
IFS="$OIFS1"
if [ ".$apc_prev" != . ]; then
    echo "configure:Error: missing argument to --`echo $apc_prev | sed 's/_/-/g'`" 1>&2
    exit 1
fi

##
##  a few errors
##
if [ ".$suexec" = .1 ]; then
    if [ ".$suexec_ok" = .0 ]; then
        echo "configure:Error: You enabled the suEXEC feature via --enable-suexec but"
        echo "                 without explicitly configuring it via at least one"
        echo "                 --suexec-xxxxx option. Seems like you are still not"
        echo "                 familiar with the suEXEC risks. Please read the INSTALL"
        echo "                 and htdocs/manual/suexec.html documents first."
        exit 1
    fi
fi

##
##  a few warnings
##
if [ ".$suexec" = .1 ]; then
    if [ ".`id | grep root`" = . ]; then
        echo " + Warning: You enabled the suEXEC feature. Be aware that you need" 1>&2
        echo " + root privileges for this, at the latest at the installation step." 1>&2
    fi
fi
if [ ".$PERL" = .no-perl-on-this-system ]; then
    if [ .$quiet = .no ]; then
        echo " + Warning: no Perl interpreter available for support scripts."
        echo " + Perhaps you have to select one with --with-perl=FILE."
    fi
fi

##
##  expand path variables and make sure
##  they do not end with a backslash
##
OIFS="$IFS" IFS="$DIFS"
for var in prefix exec_prefix bindir sbindir \
           libexecdir mandir sysconfdir datadir \
           includedir localstatedir runtimedir \
           logfiledir proxycachedir; do
    eval "val=\"\$$var\"";
    val=`echo $val | sed -e 's:/*$::'`
    eval "$var=\"$val\""
    case $var in
       libexecdir|sysconfdir|datadir|localstatedir|includedir ) 
           eval "val=\$$var"
           case $val in
               *apache | *apache* ) ;;
               * ) eval "customized=\$customized_$var"
                   if [ ".$customized" = .0 ]; then
                       eval "$var=\"\$$var/apache\""
                   fi
                   ;;
           esac
           ;;
    esac
done
IFS="$OIFS"

##
##  determine special configurable Makefile targets
##
if [ ".$support" = .1 ]; then
      build_support=build-support
    install_support=install-support
      clean_support=clean-support
  distclean_support=distclean-support
else
      build_support=
    install_support=
      clean_support=
  distclean_support=
fi

##
##  determine special configuration parameters
##
conf_group="#-1"
conf_port="80"
conf_serveradmin="you@your.address"
conf_servername="new.host.name"
if [ ".$confadjust" = .1 ]; then
    if [ ".`egrep '^nobody:' /etc/group`" != . ]; then
        conf_group="nobody"
    else
        if [ ".`egrep '^nogroup:' /etc/group`" != . ]; then
            conf_group="nogroup"
        fi
    fi
    if [ ".`id | grep root`" = . ]; then
        conf_port="8080"
    fi
    conf_serveradmin="`$aux/buildinfo.sh -n %u@%h%d`"
    conf_servername="`$aux/buildinfo.sh -n %h%d`"
fi
 
##
##  determine prefix-relative paths for directories
##  because Apache supports them for the -d and -f 
##  options, the LoadModule directive, etc.
##
##  [we have to make sure that it ends with a slash
##   or we cannot support the case where the relative
##   path is just the emtpy one, i.e. ""]
##
runtimedir_relative=`echo $runtimedir | sed -e "s:^$prefix/*::" -e 's:\(.\)$:\1/:'`
logfiledir_relative=`echo $logfiledir | sed -e "s:^$prefix/*::" -e 's:\(.\)$:\1/:'`
sysconfdir_relative=`echo $sysconfdir | sed -e "s:^$prefix/*::" -e 's:\(.\)$:\1/:'`
libexecdir_relative=`echo $libexecdir | sed -e "s:^$prefix/*::" -e 's:\(.\)$:\1/:'`

##
##  check and debug
##
if [ ".$layout" = .1 ]; then
    echo ""
    echo "Installation paths:"
    echo "               prefix: $prefix"
    echo "          exec_prefix: $exec_prefix" 
    echo "               bindir: $bindir" 
    echo "              sbindir: $sbindir" 
    echo "           libexecdir: $libexecdir" 
    echo "               mandir: $mandir" 
    echo "           sysconfdir: $sysconfdir" 
    echo "              datadir: $datadir" 
    echo "           includedir: $includedir" 
    echo "        localstatedir: $localstatedir" 
    echo "           runtimedir: $runtimedir" 
    echo "           logfiledir: $logfiledir" 
    echo "        proxycachedir: $proxycachedir" 
    echo ""
    echo "Compilation paths:"
    echo "           HTTPD_ROOT: $prefix"
    echo "           SUEXEC_BIN: $sbindir/suexec"
    echo "      SHARED_CORE_DIR: $libexecdir"
    echo "       DEFAULT_PIDLOG: ${runtimedir_relative}httpd.pid"
    echo "   DEFAULT_SCOREBOARD: ${runtimedir_relative}httpd.scoreboard"
    echo "     DEFAULT_LOCKFILE: ${runtimedir_relative}httpd.lock"
    echo "      DEFAULT_XFERLOG: ${logfiledir_relative}access_log"
    echo "     DEFAULT_ERRORLOG: ${logfiledir_relative}error_log"
    echo "    TYPES_CONFIG_FILE: ${sysconfdir_relative}mime.types"
    echo "   SERVER_CONFIG_FILE: ${sysconfdir_relative}httpd.conf"
    echo "   ACCESS_CONFIG_FILE: ${sysconfdir_relative}access.conf"
    echo " RESOURCE_CONFIG_FILE: ${sysconfdir_relative}srm.conf"
    echo ""
    exit 0
fi

##
##  create Makefile from Makefile.tmpl
##
if [ .$quiet = .no ]; then
    echo "Creating $mkf"
fi
sed <Makefile.tmpl >$mkf \
-e "s%@PERL@%$PERL%g" \
-e "s%@TOP@%$top%g" \
-e "s%@SRC@%$src%g" \
-e "s%@MKF@%$mkf%g" \
-e "s%@AUX@%$aux%g" \
-e "s%@prefix@%$prefix%g" \
-e "s%@exec_prefix@%$exec_prefix%g" \
-e "s%@bindir@%$bindir%g" \
-e "s%@sbindir@%$sbindir%g" \
-e "s%@libexecdir@%$libexecdir%g" \
-e "s%@libexecdir_relative@%$libexecdir_relative%g" \
-e "s%@mandir@%$mandir%g" \
-e "s%@sysconfdir@%$sysconfdir%g" \
-e "s%@datadir@%$datadir%g" \
-e "s%@localstatedir@%$localstatedir%g" \
-e "s%@includedir@%$includedir%g" \
-e "s%@runtimedir@%$runtimedir%g" \
-e "s%@logfiledir@%$logfiledir%g" \
-e "s%@proxycachedir@%$proxycachedir%g" \
-e "s%@suexec@%$suexec%g" \
-e "s%@suexec_caller@%$suexec_caller%g" \
-e "s%@suexec_userdir@%$suexec_userdir%g" \
-e "s%@suexec_uidmin@%$suexec_uidmin%g" \
-e "s%@suexec_gidmin@%$suexec_gidmin%g" \
-e "s%@suexec_safepath@%$suexec_safepath%g" \
-e "s%@conf_group@%$conf_group%g" \
-e "s%@conf_port@%$conf_port%g" \
-e "s%@conf_serveradmin@%$conf_serveradmin%g" \
-e "s%@conf_servername@%$conf_servername%g" \
-e "s%@build_support@%$build_support%g" \
-e "s%@install_support@%$install_support%g" \
-e "s%@clean_support@%$clean_support%g" \
-e "s%@distclean_support@%$distclean_support%g"

##
##  override default paths in $src/include/httpd.h
##  via command line arguments for the compiler
##  supplied by a little shell script named $src/apaci
##
echo "#!/bin/sh" >$src/apaci
echo "## USED AS A COMMAND LINE EXPANDER TO OVERRIDE PATHS" >>$src/apaci
echo "## WITHOUT DISTURBING THE KNOWN MAKE BUILD PROCESS DISPLAY" >>$src/apaci
echo "echo '-DHTTPD_ROOT=\"$prefix\"'" >>$src/apaci
echo "echo '-DSUEXEC_BIN=\"$sbindir/suexec\"'" >>$src/apaci
echo "echo '-DSHARED_CORE_DIR=\"$libexecdir\"'" >>$src/apaci
echo "echo '-DDEFAULT_PIDLOG=\"${runtimedir_relative}httpd.pid\"'" >>$src/apaci
echo "echo '-DDEFAULT_SCOREBOARD=\"${runtimedir_relative}httpd.scoreboard\"'" >>$src/apaci
echo "echo '-DDEFAULT_LOCKFILE=\"${runtimedir_relative}httpd.lock\"'" >>$src/apaci
echo "echo '-DDEFAULT_XFERLOG=\"${logfiledir_relative}access_log\"'" >>$src/apaci
echo "echo '-DDEFAULT_ERRORLOG=\"${logfiledir_relative}error_log\"'" >>$src/apaci
echo "echo '-DTYPES_CONFIG_FILE=\"${sysconfdir_relative}mime.types\"'" >>$src/apaci
echo "echo '-DSERVER_CONFIG_FILE=\"${sysconfdir_relative}httpd.conf\"'" >>$src/apaci
echo "echo '-DACCESS_CONFIG_FILE=\"${sysconfdir_relative}access.conf\"'" >>$src/apaci
echo "echo '-DRESOURCE_CONFIG_FILE=\"${sysconfdir_relative}srm.conf\"'" >>$src/apaci
chmod a+x $src/apaci
CFLAGS="$CFLAGS \\\`\$(SRCDIR)/apaci\\\`"

##
##  create $src/Configuration.apaci file
##
if [ .$quiet = .no ]; then
    echo "Creating Configuration.apaci in $src"
fi
rm -f $sedsubst 2>/dev/null
touch $sedsubst

#   generate settings from imported environment variables
OIFS="$IFS" IFS="$DIFS"
for var in CC CPP OPTIM CFLAGS CFLAGS_SHLIB LDFLAGS LD_SHLIB LDFLAGS_SHLIB \
           LDFLAGS_SHLIB_EXPORT LIBS INCLUDES RANLIB DEPS; do
    eval "val=\"\$$var\"";
    if [ ".$val" != . ]; then
        case $var in 
            CFLAGS|LDFLAGS|LIBS|INCLUDES|DEPS) 
                echo $SEO "s%^#*\\(EXTRA_$var=\\).*%\\1$val%g" >>$sedsubst
                ;;
            *)
                echo $SEO "s%^#*\\($var=\\).*%\\1$val%g" >>$sedsubst
                ;;
        esac
        eval "$var=\"\"; export $var"
    fi
done
IFS="$OIFS"

#   generate rule directives 
OIFS="$IFS" IFS=':'
for rule in $rules; do
    name="`echo $rule | tr "a-z" "A-Z"`"
    eval "val=\$rule_$rule"
    echo $SEO "s%^\\(Rule $name=\\).*%\\1$val%g" >>$sedsubst
    if [ $verbose = yes ]; then
        echo " + Rule $name=$val"
    fi
done
IFS="$OIFS"

#   consistency checks for shared object support
some_shares=0
OIFS="$IFS" IFS=':'
for module in $modules; do
    eval "share=\$shared_$module"
    if [ $share = yes ]; then
        some_shares=1
    fi
done
IFS="$OIFS"
if [ $some_shares = 1 ]; then
    if [ $module_so = no ]; then
        module_so=yes
        if [ .$quiet = .no ]; then
            echo " + enabling mod_so for DSO support"
        fi
    fi
fi
if [ ".$shared_so" = .yes ]; then
    shared_so=no
    echo "configure:Error: Module mod_so cannot be made a DSO itself" 1>&2
    exit 1
fi

#   generate module directives
OIFS="$IFS" IFS=':'
for module in $modules; do
    eval "add=\$module_$module"
    if [ $add = yes ]; then
        echo $SEO "s%^.*\\(AddModule.*$module\\..*\\)%\\1%g" >>$sedsubst
        echo $SEO "s%^.*\\(SharedModule.*$module\\..*\\)%\\1%g" >>$sedsubst
        m="yes [static]"
    else
        echo $SEO "s%^.*\\(AddModule.*$module\\..*\\)%# \\1%g" >>$sedsubst
        echo $SEO "s%^.*\\(SharedModule.*$module\\..*\\)%# \\1%g" >>$sedsubst
        m=no
    fi
    eval "share=\$shared_$module"
    if [ $share = yes ]; then
        echo $SEO "s%^\\(.*\\)AddModule\\(.*$module\\.\\)[oa]\\(.*\\)%\\1SharedModule\\2so\\3%g" >>$sedsubst
        m="yes [shared]"
    fi
    if [ $verbose = yes ]; then
        echo " + Module $module: $m"
    fi
done
IFS="$OIFS"

#   split sedsubst into chunks of 50 commands
#   to workaround limits in braindead seds
files=`$AWK <$sedsubst '
    BEGIN { line=0; cnt=0; }
    {
        if (line % 50 == 0) {
            file = sedsubst "." cnt;
            printf("%s\n", file);
            cnt++;
        }
        line++;
        print $0 >file;
    }
' "sedsubst=$sedsubst"`
OIFS="$IFS" IFS="$DIFS"
substcmd=""
for file in $files; do
    substcmd="${substcmd} sed -f $file |"
done
substcmd="${substcmd} cat"
IFS="$OIFS"

#   and finally translate the config template 
#   according to our defined configuration
eval "cat $src/Configuration.tmpl $addconf | $substcmd >$src/Configuration.apaci"

#   cleanup
rm -f $sedsubst $sedsubst.[0-9] 2>/dev/null
rm -f $addconf 2>/dev/null

##
##  create all other Makefiles by running the proprietary 
##  $src/Configure script with our custom Configuration.apaci file
##
if [ .$quiet = .yes ]; then
    (cd $src; ./Configure -file Configuration.apaci >/dev/null);
else
    (cd $src; ./Configure -file Configuration.apaci |\
     sed -e '/^Using config file:.*/d' \
         -e "s:Makefile in :Makefile in $src\\/:" \
         -e "s:Makefile\$:Makefile in $src:")
fi