support/apxs.in - httpd - Git at Google

 #!@perlbin@ -w
 # ====================================================================
 # The Apache Software License, Version 1.1
 #
 # Copyright (c) 2000-2002 The Apache Software Foundation.  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. The end-user documentation included with the redistribution,
 #    if any, must include the following acknowledgment:
 #       "This product includes software developed by the
 #        Apache Software Foundation (http://www.apache.org/)."
 #    Alternately, this acknowledgment may appear in the software itself,
 #    if and wherever such third-party acknowledgments normally appear.
 #
 # 4. The names "Apache" and "Apache Software Foundation" 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 name, without prior written
 #    permission of the Apache Software Foundation.
 #
 # THIS SOFTWARE IS PROVIDED ``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 SOFTWARE FOUNDATION 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 Software Foundation.  For more
 # information on the Apache Software Foundation, please see
 # <http://www.apache.org/>.
 #

 require 5.003;
 use strict;
 package apxs;

 ##
 ##  Configuration
 ##

 my $prefix         = "@prefix@";
 my $CFG_PREFIX     = $prefix;

 # read the configuration variables once
 my %config_vars = ();
 get_config_vars("$prefix/build/config_vars.mk",\%config_vars);

 my $exec_prefix    = get_vars("exec_prefix");
 my $CFG_TARGET     = get_vars("progname");
 my $CFG_SYSCONFDIR = get_vars("sysconfdir");
 my $CFG_CFLAGS     = join ' ', map { get_vars($_) }
   qw(SHLTCFLAGS CFLAGS NOTEST_CPPFLAGS EXTRA_CPPFLAGS EXTRA_CFLAGS);
 my $includedir     = get_vars("includedir");
 my $CFG_INCLUDEDIR = eval qq("$includedir");
 my $CFG_CC         = get_vars("CC");
 my $libexecdir     = get_vars("libexecdir");
 my $CFG_LIBEXECDIR = eval qq("$libexecdir");
 my $sbindir        = get_vars("sbindir");
 my $CFG_SBINDIR    = eval qq("$sbindir");
 my $ltflags        = $ENV{'LTFLAGS'};
 $ltflags or $ltflags = "--silent";

 my %internal_vars = map {$_ => 1}
     qw(TARGET CC CFLAGS CFLAGS_SHLIB LD_SHLIB LDFLAGS_SHLIB LIBS_SHLIB
        PREFIX SBINDIR INCLUDEDIR LIBEXECDIR SYSCONFDIR);

 ##
 ##  parse argument line
 ##

 #   defaults for parameters
 my $opt_n = '';
 my $opt_g = '';
 my $opt_c = 0;
 my $opt_o = '';
 my @opt_D = ();
 my @opt_I = ();
 my @opt_L = ();
 my @opt_l = ();
 my @opt_W = ();
 my @opt_S = ();
 my $opt_e = 0;
 my $opt_i = 0;
 my $opt_a = 0;
 my $opt_A = 0;
 my $opt_q = 0;
 my $opt_h = 0;

 #   this subroutine is derived from Perl's getopts.pl with the enhancement of
 #   the "+" metacharacter at the format string to allow a list to be built by
 #   subsequent occurrences of the same option.
 sub Getopts {
     my ($argumentative, @ARGV) = @_;
     my $errs = 0;
     local $_;
     local $[ = 0;

     my @args = split / */, $argumentative;
     while (@ARGV && ($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
         my ($first, $rest) = ($1,$2);
         if ($_ =~ m|^--$|) {
             shift @ARGV;
             last;
         }
         my $pos = index($argumentative,$first);
         if ($pos >= $[) {
             if ($args[$pos+1] eq ':') {
                 shift @ARGV;
                 if ($rest eq '') {
                     unless (@ARGV) {
                         error("Incomplete option: $first (needs an argument)");
                         $errs++;
                     }
                     $rest = shift(@ARGV);
                 }
                 eval "\$opt_$first = \$rest;";
             }
             elsif ($args[$pos+1] eq '+') {
                 shift @ARGV;
                 if ($rest eq '') {
                     unless (@ARGV) {
                         error("Incomplete option: $first (needs an argument)");
                         $errs++;
                     }
                     $rest = shift(@ARGV);
                 }
                 eval "push(\@opt_$first, \$rest);";
             }
             else {
                 eval "\$opt_$first = 1";
                 if ($rest eq '') {
                     shift(@ARGV);
                 }
                 else {
                     $ARGV[0] = "-$rest";
                 }
             }
         }
         else {
             error("Unknown option: $first");
             $errs++;
             if ($rest ne '') {
                 $ARGV[0] = "-$rest";
             }
             else {
                 shift(@ARGV);
             }
         }
     }
     return ($errs == 0, @ARGV);
 }

 sub usage {
     print STDERR "Usage: apxs -g [-S <var>=<val>] -n <modname>\n";
     print STDERR "       apxs -q [-S <var>=<val>] <query> ...\n";
     print STDERR "       apxs -c [-S <var>=<val>] [-o <dsofile>] [-D <name>[=<value>]]\n";
     print STDERR "               [-I <incdir>] [-L <libdir>] [-l <libname>] [-Wc,<flags>]\n";
     print STDERR "               [-Wl,<flags>] <files> ...\n";
     print STDERR "       apxs -i [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...\n";
     print STDERR "       apxs -e [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...\n";
     exit(1);
 }

 #   option handling
 my $rc;
 ($rc, @ARGV) = &Getopts("qn:gco:I+D+L+l+W+S+eiaA", @ARGV);
 &usage if ($rc == 0);
 &usage if ($#ARGV == -1 and not $opt_g);
 &usage if (not $opt_q and not ($opt_g and $opt_n) and not $opt_i and not $opt_c and not $opt_e);

 #   argument handling
 my @args = @ARGV;
 my $name = 'unknown';
 $name = $opt_n if ($opt_n ne '');

 if (@opt_S) {
     my ($opt_S);
     foreach $opt_S (@opt_S) {
 	if ($opt_S =~ m/^([^=]+)=(.*)$/) {
 	    my ($var) = $1;
 	    my ($val) = $2;
 	    my $oldval = eval "\$CFG_$var";

 	    unless ($var and $oldval) {
 		print STDERR "apxs:Error: no config variable $var\n";
 		&usage;
 	    }

 	    eval "\$CFG_${var}=\"${val}\"";
 	} else {
 	    print STDERR "apxs:Error: malformatted -S option\n";
 	    &usage;
 	}
     }
 }

 ##
 ##  Initial shared object support check
 ##
 my $httpd = get_vars("sbindir") . "/" . get_vars("progname");
 $httpd = eval qq("$httpd");
 $httpd = eval qq("$httpd");

 #allow apxs to be run from the source tree, before installation
 if ($0 =~ m:support/apxs$:) {
     ($httpd = $0) =~ s:support/apxs$::;
 }

 unless (-x "$httpd") {
 	error("$httpd not found or not executable");
 	exit 1;
 }

 unless (grep /mod_so/, `$httpd -l`) {
     error("Sorry, no shared object support for Apache");
     error("available under your platform. Make sure");
     error("the Apache module mod_so is compiled into");
     error("your server binary `$httpd'.");
     exit 1;
 }

 sub get_config_vars{
     my ($file, $rh_config) = @_;

     open IN, $file or die "cannot open $file: $!";
     while (<IN>){
         if (/^\s*(.*?)\s*=\s*(.*)$/){
             $rh_config->{$1} = $2;
         }
     }
     close IN;
 }

 sub get_vars {
     my $result = '';
     my $ok = 0;
     my $arg;
     foreach $arg (@_) {
         if (exists $config_vars{$arg} or exists $config_vars{lc $arg}) {
             my $val = exists $config_vars{$arg}
                 ? $config_vars{$arg}
                 : $config_vars{lc $arg};
             $val =~ s/[()]//g;
             $result .= eval "qq($val)";
             $result .= ";;";
             $ok = 1;
         }
         if (not $ok) {
             if (exists $internal_vars{$arg} or exists $internal_vars{lc $arg}) {
                 my $val = exists $internal_vars{$arg} ? $arg : lc $arg;
                 $val = eval "\$CFG_$val";
                 $result .= eval "qq($val)";
                 $result .= ";;";
                 $ok = 1;
             }
             if (not $ok) {
                 error("Invalid query string `$arg'");
                 exit(1);
             }
         }
     }
     $result =~ s|;;$||;
     $result =~ s|:| |;
     return $result;
 }

 ##
 ##  Operation
 ##

 #   helper function for executing a list of
 #   system command with return code checks
 sub execute_cmds {
     my (@cmds) = @_;
     my ($cmd, $rc);

     foreach $cmd (@cmds) {
         notice($cmd);
         $rc = system $cmd;
         if ($rc) {
             error(sprintf "Command failed with rc=%d\n", $rc << 8);
             exit 1 ;
         }
     }
 }

 if ($opt_g) {
     ##
     ##  SAMPLE MODULE SOURCE GENERATION
     ##

     if (-d $name) {
         error("Directory `$name' already exists. Remove first");
         exit(1);
     }

     my $data = join('', <DATA>);
     $data =~ s|%NAME%|$name|sg;
     $data =~ s|%TARGET%|$CFG_TARGET|sg;
     $data =~ s|%PREFIX%|$prefix|sg;

     my ($mkf, $mods, $src) = ($data =~ m|^(.+)-=#=-\n(.+)-=#=-\n(.+)|s);

     notice("Creating [DIR]  $name");
     system("mkdir $name");
     notice("Creating [FILE] $name/Makefile");
     open(FP, ">${name}/Makefile") || die;
     print FP $mkf;
     close(FP);
     notice("Creating [FILE] $name/modules.mk");
     open(FP, ">${name}/modules.mk") || die;
     print FP $mods;
     close(FP);
     notice("Creating [FILE] $name/mod_$name.c");
     open(FP, ">${name}/mod_${name}.c") || die;
     print FP $src;
     close(FP);
     notice("Creating [FILE] $name/.deps");
     system("touch ${name}/.deps");

     exit(0);
 }


 if ($opt_q) {
     ##
     ##  QUERY INFORMATION
     ##
     my $result = get_vars(@args);
     print "$result";
 }

 if ($opt_c) {
     ##
     ##  SHARED OBJECT COMPILATION
     ##

     #   split files into sources and objects
     my @srcs = ();
     my @objs = ();
     my $f;
     foreach $f (@args) {
         if ($f =~ m|\.c$|) {
             push(@srcs, $f);
         }
         else {
             push(@objs, $f);
         }
     }

     #   determine output file
     my $dso_file;
     if ($opt_o eq '') {
         if ($#srcs > -1) {
             $dso_file = $srcs[0];
             $dso_file =~ s|\.[^.]+$|.la|;
         }
         elsif ($#objs > -1) {
             $dso_file = $objs[0];
             $dso_file =~ s|\.[^.]+$|.la|;
         }
         else {
             $dso_file = "mod_unknown.so";
         }
     }
     else {
         $dso_file = $opt_o;
     }

     #   create compilation commands
     my @cmds = ();
     my $opt = '';
     my ($opt_Wc, $opt_I, $opt_D);
     foreach $opt_Wc (@opt_W) {
         $opt .= "$1 " if ($opt_Wc =~ m|^\s*c,(.*)$|);
     }
     foreach $opt_I (@opt_I) {
         $opt .= "-I$opt_I ";
     }
     foreach $opt_D (@opt_D) {
         $opt .= "-D$opt_D ";
     }
     my $cflags = "$CFG_CFLAGS";
     my $s;
     my $mod;
     foreach $s (@srcs) {
         my $slo = $s;
         $slo =~ s|\.c$|.slo|;
         my $lo = $s;
         $lo =~ s|\.c$|.lo|;
         my $la = $s;
         $la =~ s|\.c$|.la|;
         my $o = $s;
         $o =~ s|\.c$|.o|;
         push(@cmds, "$prefix/build/libtool $ltflags --mode=compile $CFG_CC $cflags -I$CFG_INCLUDEDIR $opt -c -o $lo $s && touch $slo");
         unshift(@objs, $lo);
     }

     #   create link command
     my $o;
     my $lo;
     foreach $o (@objs) {
         $lo .= " $o";
     }
     my ($opt_Wl, $opt_L, $opt_l);
     foreach $opt_Wl (@opt_W) {
         if ($CFG_CC !~ m/gcc$/) {
             $opt .= " $1" if ($opt_Wl =~ m|^\s*l,(.*)$|);
         } else {
             $opt .= " -W$opt_Wl";
         }
     }
     foreach $opt_L (@opt_L) {
         $opt .= " -L$opt_L";
     }
     foreach $opt_l (@opt_l) {
         $opt .= " -l$opt_l";
     }

     push(@cmds, "$prefix/build/libtool $ltflags --mode=link $CFG_CC -o $dso_file -rpath $CFG_LIBEXECDIR -module -avoid-version $opt $lo");

     #   execute the commands
     &execute_cmds(@cmds);

     #   allow one-step compilation and installation
     if ($opt_i or $opt_e) {
         @args = ( $dso_file );
     }
 }

 if ($opt_i or $opt_e) {
     ##
     ##  SHARED OBJECT INSTALLATION
     ##

     #   determine installation commands
     #   and corresponding LoadModule/AddModule directives
     my @lmd = ();
     my @amd = ();
     my @cmds = ();
     my $f;
     foreach $f (@args) {
         if ($f !~ m#(\.so$|\.la$)#) {
             error("file $f is not a shared object");
             exit(1);
         }
         my $t = $f;
         $t =~ s|^.+/([^/]+)$|$1|;
         $t =~ s|\.la$|\.so|;
         if ($opt_i) {
 	    push(@cmds, "$prefix/build/instdso.sh SH_LIBTOOL='" .
                  "$prefix/build/libtool' $f $CFG_LIBEXECDIR");
 	    push(@cmds, "chmod 755 $CFG_LIBEXECDIR/$t");
         }

         #   determine module symbolname and filename
         my $filename = '';
         if ($name eq 'unknown') {
             $name = '';
             my $base = $f;
             $base =~ s|\.[^.]+$||;
             if (-f "$base.c") {
                 open(FP, "<$base.c");
                 my $content = join('', <FP>);
                 close(FP);
                 if ($content =~ m|.*module\s+(?:AP_MODULE_DECLARE_DATA\s+)?([a-zA-Z0-9_]+)_module\s*=\s*.*|s) {
                     $name = "$1";
                     $filename = "$base.c";
                     $filename =~ s|^[^/]+/||;
                 }
             }
             if ($name eq '') {
                 if ($base =~ m|.*mod_([a-zA-Z0-9_]+)\..+|) {
                     $name = "$1";
                     $filename = $base;
                     $filename =~ s|^[^/]+/||;
                 }
             }
             if ($name eq '') {
                 error("Sorry, cannot determine bootstrap symbol name");
                 error("Please specify one with option `-n'");
                 exit(1);
             }
         }
         if ($filename eq '') {
             $filename = "mod_${name}.c";
         }
         my $dir = $CFG_LIBEXECDIR;
         $dir =~ s|^$CFG_PREFIX/?||;
         $dir =~ s|(.)$|$1/|;
 	$t =~ s|\.la$|.so|;
         push(@lmd, sprintf("LoadModule %-18s %s", "${name}_module", "$dir$t"));
         push(@amd, sprintf("AddModule %s", $filename));
     }

     #   execute the commands
     &execute_cmds(@cmds);

     #   activate module via LoadModule/AddModule directive
     if ($opt_a or $opt_A) {
         if (not -f "$CFG_SYSCONFDIR/$CFG_TARGET.conf") {
             error("Config file $CFG_SYSCONFDIR/$CFG_TARGET.conf not found");
             exit(1);
         }

         open(FP, "<$CFG_SYSCONFDIR/$CFG_TARGET.conf") || die;
         my $content = join('', <FP>);
         close(FP);

         if ($content !~ m|\n#?\s*LoadModule\s+|) {
             error("Activation failed for custom $CFG_SYSCONFDIR/$CFG_TARGET.conf file.");
             error("At least one `LoadModule' directive already has to exist.");
             exit(1);
         }

         my $lmd;
         my $c = '';
         $c = '#' if ($opt_A);
         foreach $lmd (@lmd) {
             my $what = $opt_A ? "preparing" : "activating";
             if ($content !~ m|\n#?\s*$lmd|) {
                  $content =~ s|^(.*\n#?\s*LoadModule\s+[^\n]+\n)|$1$c$lmd\n|sg;
             } else {
                  $content =~ s|^(.*\n)#?\s*$lmd[^\n]*\n|$1$c$lmd\n|sg;
             }
             $lmd =~ m|LoadModule\s+(.+?)_module.*|;
             notice("[$what module `$1' in $CFG_SYSCONFDIR/$CFG_TARGET.conf]");
         }
         my $amd;
         foreach $amd (@amd) {
             if ($content !~ m|\n#?\s*$amd|) {
                  $content =~ s|^(.*\n#?\s*AddModule\s+[^\n]+\n)|$1$c$amd\n|sg;
             } else {
                  $content =~ s|^(.*\n)#?\s*$amd[^\n]*\n|$1$c$amd\n|sg;
             }
         }
         if (@lmd or @amd) {
             if (open(FP, ">$CFG_SYSCONFDIR/$CFG_TARGET.conf.new")) {
                 print FP $content;
                 close(FP);
                 system("cp $CFG_SYSCONFDIR/$CFG_TARGET.conf $CFG_SYSCONFDIR/$CFG_TARGET.conf.bak && " .
                        "cp $CFG_SYSCONFDIR/$CFG_TARGET.conf.new $CFG_SYSCONFDIR/$CFG_TARGET.conf && " .
                        "rm $CFG_SYSCONFDIR/$CFG_TARGET.conf.new");
             } else {
                 notice("unable to open configuration file");
             }
 	}
     }
 }

 sub error{
     print STDERR "apxs:Error: $_[0].\n";
 }

 sub notice{
     print STDERR "$_[0]\n";
 }

 ##EOF##
 __DATA__
 ##
 ##  Makefile -- Build procedure for sample %NAME% Apache module
 ##  Autogenerated via ``apxs -n %NAME% -g''.
 ##

 builddir=$(shell pwd)
 top_srcdir=%PREFIX%
 top_builddir=%PREFIX%
 include %PREFIX%/build/special.mk

 #   the used tools
 APXS=apxs
 APACHECTL=apachectl

 #   additional defines, includes and libraries
 #DEF=-Dmy_define=my_value
 #INC=-Imy/include/dir
 #LIB=-Lmy/lib/dir -lmylib

 #   the default target
 all: local-shared-build

 #   install the shared object file into Apache
 install: install-modules

 #   cleanup
 clean:
 	-rm -f mod_%NAME%.o mod_%NAME%.lo mod_%NAME%.slo mod_%NAME%.la

 #   simple test
 test: reload
 	lynx -mime_header http://localhost/%NAME%

 #   install and activate shared object by reloading Apache to
 #   force a reload of the shared object file
 reload: install restart

 #   the general Apache start/restart/stop
 #   procedures
 start:
 	$(APACHECTL) start
 restart:
 	$(APACHECTL) restart
 stop:
 	$(APACHECTL) stop

 -=#=-
 mod_%NAME%.la: mod_%NAME%.slo
 	$(SH_LINK) -rpath $(libexecdir) -module -avoid-version  mod_%NAME%.lo
 DISTCLEAN_TARGETS = modules.mk
 shared =  mod_%NAME%.la
 -=#=-
 /*
 **  mod_%NAME%.c -- Apache sample %NAME% module
 **  [Autogenerated via ``apxs -n %NAME% -g'']
 **
 **  To play with this sample module first compile it into a
 **  DSO file and install it into Apache's modules directory
 **  by running:
 **
 **    $ apxs -c -i mod_%NAME%.c
 **
 **  Then activate it in Apache's %TARGET%.conf file for instance
 **  for the URL /%NAME% in as follows:
 **
 **    #   %TARGET%.conf
 **    LoadModule %NAME%_module modules/mod_%NAME%.so
 **    <Location /%NAME%>
 **    SetHandler %NAME%
 **    </Location>
 **
 **  Then after restarting Apache via
 **
 **    $ apachectl restart
 **
 **  you immediately can request the URL /%NAME% and watch for the
 **  output of this module. This can be achieved for instance via:
 **
 **    $ lynx -mime_header http://localhost/%NAME%
 **
 **  The output should be similar to the following one:
 **
 **    HTTP/1.1 200 OK
 **    Date: Tue, 31 Mar 1998 14:42:22 GMT
 **    Server: Apache/1.3.4 (Unix)
 **    Connection: close
 **    Content-Type: text/html
 **
 **    The sample page from mod_%NAME%.c
 */

 #include "httpd.h"
 #include "http_config.h"
 #include "http_protocol.h"
 #include "ap_config.h"

 /* The sample content handler */
 static int %NAME%_handler(request_rec *r)
 {
     if (strcmp(r->handler, "%NAME%")) {
         return DECLINED;
     }
     r->content_type = "text/html";

     if (!r->header_only)
         ap_rputs("The sample page from mod_%NAME%.c\n", r);
     return OK;
 }

 static void %NAME%_register_hooks(apr_pool_t *p)
 {
     ap_hook_handler(%NAME%_handler, NULL, NULL, APR_HOOK_MIDDLE);
 }

 /* Dispatch list for API hooks */
 module AP_MODULE_DECLARE_DATA %NAME%_module = {
     STANDARD20_MODULE_STUFF,
     NULL,                  /* create per-dir    config structures */
     NULL,                  /* merge  per-dir    config structures */
     NULL,                  /* create per-server config structures */
     NULL,                  /* merge  per-server config structures */
     NULL,                  /* table of config file commands       */
     %NAME%_register_hooks  /* register hooks                      */
 };
	#!@perlbin@ -w
	# ====================================================================
	# The Apache Software License, Version 1.1
	#
	# Copyright (c) 2000-2002 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
	# if any, must include the following acknowledgment:
	# "This product includes software developed by the
	# Apache Software Foundation (http://www.apache.org/)."
	# Alternately, this acknowledgment may appear in the software itself,
	# if and wherever such third-party acknowledgments normally appear.
	#
	# 4. The names "Apache" and "Apache Software Foundation" 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 name, without prior written
	# permission of the Apache Software Foundation.
	#
	# THIS SOFTWARE IS PROVIDED ``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 SOFTWARE FOUNDATION 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 Software Foundation. For more
	# information on the Apache Software Foundation, please see
	# <http://www.apache.org/>.
	#

	require 5.003;
	use strict;
	package apxs;

	##
	## Configuration
	##

	my $prefix = "@prefix@";
	my $CFG_PREFIX = $prefix;

	# read the configuration variables once
	my %config_vars = ();
	get_config_vars("$prefix/build/config_vars.mk",\%config_vars);

	my $exec_prefix = get_vars("exec_prefix");
	my $CFG_TARGET = get_vars("progname");
	my $CFG_SYSCONFDIR = get_vars("sysconfdir");
	my $CFG_CFLAGS = join ' ', map { get_vars($_) }
	qw(SHLTCFLAGS CFLAGS NOTEST_CPPFLAGS EXTRA_CPPFLAGS EXTRA_CFLAGS);
	my $includedir = get_vars("includedir");
	my $CFG_INCLUDEDIR = eval qq("$includedir");
	my $CFG_CC = get_vars("CC");
	my $libexecdir = get_vars("libexecdir");
	my $CFG_LIBEXECDIR = eval qq("$libexecdir");
	my $sbindir = get_vars("sbindir");
	my $CFG_SBINDIR = eval qq("$sbindir");
	my $ltflags = $ENV{'LTFLAGS'};
	$ltflags or $ltflags = "--silent";

	my %internal_vars = map {$_ => 1}
	qw(TARGET CC CFLAGS CFLAGS_SHLIB LD_SHLIB LDFLAGS_SHLIB LIBS_SHLIB
	PREFIX SBINDIR INCLUDEDIR LIBEXECDIR SYSCONFDIR);

	##
	## parse argument line
	##

	# defaults for parameters
	my $opt_n = '';
	my $opt_g = '';
	my $opt_c = 0;
	my $opt_o = '';
	my @opt_D = ();
	my @opt_I = ();
	my @opt_L = ();
	my @opt_l = ();
	my @opt_W = ();
	my @opt_S = ();
	my $opt_e = 0;
	my $opt_i = 0;
	my $opt_a = 0;
	my $opt_A = 0;
	my $opt_q = 0;
	my $opt_h = 0;

	# this subroutine is derived from Perl's getopts.pl with the enhancement of
	# the "+" metacharacter at the format string to allow a list to be built by
	# subsequent occurrences of the same option.
	sub Getopts {
	my ($argumentative, @ARGV) = @_;
	my $errs = 0;
	local $_;
	local $[ = 0;

	my @args = split / */, $argumentative;
	while (@ARGV && ($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
	my ($first, $rest) = ($1,$2);
	if ($_ =~ m\|^--$\|) {
	shift @ARGV;
	last;
	}
	my $pos = index($argumentative,$first);
	if ($pos >= $[) {
	if ($args[$pos+1] eq ':') {
	shift @ARGV;
	if ($rest eq '') {
	unless (@ARGV) {
	error("Incomplete option: $first (needs an argument)");
	$errs++;
	}
	$rest = shift(@ARGV);
	}
	eval "\$opt_$first = \$rest;";
	}
	elsif ($args[$pos+1] eq '+') {
	shift @ARGV;
	if ($rest eq '') {
	unless (@ARGV) {
	error("Incomplete option: $first (needs an argument)");
	$errs++;
	}
	$rest = shift(@ARGV);
	}
	eval "push(\@opt_$first, \$rest);";
	}
	else {
	eval "\$opt_$first = 1";
	if ($rest eq '') {
	shift(@ARGV);
	}
	else {
	$ARGV[0] = "-$rest";
	}
	}
	}
	else {
	error("Unknown option: $first");
	$errs++;
	if ($rest ne '') {
	$ARGV[0] = "-$rest";
	}
	else {
	shift(@ARGV);
	}
	}
	}
	return ($errs == 0, @ARGV);
	}

	sub usage {
	print STDERR "Usage: apxs -g [-S <var>=<val>] -n <modname>\n";
	print STDERR " apxs -q [-S <var>=<val>] <query> ...\n";
	print STDERR " apxs -c [-S <var>=<val>] [-o <dsofile>] [-D <name>[=<value>]]\n";
	print STDERR " [-I <incdir>] [-L <libdir>] [-l <libname>] [-Wc,<flags>]\n";
	print STDERR " [-Wl,<flags>] <files> ...\n";
	print STDERR " apxs -i [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...\n";
	print STDERR " apxs -e [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...\n";
	exit(1);
	}

	# option handling
	my $rc;
	($rc, @ARGV) = &Getopts("qn:gco:I+D+L+l+W+S+eiaA", @ARGV);
	&usage if ($rc == 0);
	&usage if ($#ARGV == -1 and not $opt_g);
	&usage if (not $opt_q and not ($opt_g and $opt_n) and not $opt_i and not $opt_c and not $opt_e);

	# argument handling
	my @args = @ARGV;
	my $name = 'unknown';
	$name = $opt_n if ($opt_n ne '');

	if (@opt_S) {
	my ($opt_S);
	foreach $opt_S (@opt_S) {
	if ($opt_S =~ m/^([^=]+)=(.*)$/) {
	my ($var) = $1;
	my ($val) = $2;
	my $oldval = eval "\$CFG_$var";

	unless ($var and $oldval) {
	print STDERR "apxs:Error: no config variable $var\n";
	&usage;
	}

	eval "\$CFG_${var}=\"${val}\"";
	} else {
	print STDERR "apxs:Error: malformatted -S option\n";
	&usage;
	}
	}
	}

	##
	## Initial shared object support check
	##
	my $httpd = get_vars("sbindir") . "/" . get_vars("progname");
	$httpd = eval qq("$httpd");
	$httpd = eval qq("$httpd");

	#allow apxs to be run from the source tree, before installation
	if ($0 =~ m:support/apxs$:) {
	($httpd = $0) =~ s:support/apxs$::;
	}

	unless (-x "$httpd") {
	error("$httpd not found or not executable");
	exit 1;
	}

	unless (grep /mod_so/, `$httpd -l`) {
	error("Sorry, no shared object support for Apache");
	error("available under your platform. Make sure");
	error("the Apache module mod_so is compiled into");
	error("your server binary `$httpd'.");
	exit 1;
	}

	sub get_config_vars{
	my ($file, $rh_config) = @_;

	open IN, $file or die "cannot open $file: $!";
	while (<IN>){
	if (/^\s(.?)\s=\s(.*)$/){
	$rh_config->{$1} = $2;
	}
	}
	close IN;
	}

	sub get_vars {
	my $result = '';
	my $ok = 0;
	my $arg;
	foreach $arg (@_) {
	if (exists $config_vars{$arg} or exists $config_vars{lc $arg}) {
	my $val = exists $config_vars{$arg}
	? $config_vars{$arg}
	: $config_vars{lc $arg};
	$val =~ s/[()]//g;
	$result .= eval "qq($val)";
	$result .= ";;";
	$ok = 1;
	}
	if (not $ok) {
	if (exists $internal_vars{$arg} or exists $internal_vars{lc $arg}) {
	my $val = exists $internal_vars{$arg} ? $arg : lc $arg;
	$val = eval "\$CFG_$val";
	$result .= eval "qq($val)";
	$result .= ";;";
	$ok = 1;
	}
	if (not $ok) {
	error("Invalid query string `$arg'");
	exit(1);
	}
	}
	}
	$result =~ s\|;;$\|\|;
	$result =~ s\|:\| \|;
	return $result;
	}

	##
	## Operation
	##

	# helper function for executing a list of
	# system command with return code checks
	sub execute_cmds {
	my (@cmds) = @_;
	my ($cmd, $rc);

	foreach $cmd (@cmds) {
	notice($cmd);
	$rc = system $cmd;
	if ($rc) {
	error(sprintf "Command failed with rc=%d\n", $rc << 8);
	exit 1 ;
	}
	}
	}

	if ($opt_g) {
	##
	## SAMPLE MODULE SOURCE GENERATION
	##

	if (-d $name) {
	error("Directory `$name' already exists. Remove first");
	exit(1);
	}

	my $data = join('', <DATA>);
	$data =~ s\|%NAME%\|$name\|sg;
	$data =~ s\|%TARGET%\|$CFG_TARGET\|sg;
	$data =~ s\|%PREFIX%\|$prefix\|sg;

	my ($mkf, $mods, $src) = ($data =~ m\|^(.+)-=#=-\n(.+)-=#=-\n(.+)\|s);

	notice("Creating [DIR] $name");
	system("mkdir $name");
	notice("Creating [FILE] $name/Makefile");
	open(FP, ">${name}/Makefile") \|\| die;
	print FP $mkf;
	close(FP);
	notice("Creating [FILE] $name/modules.mk");
	open(FP, ">${name}/modules.mk") \|\| die;
	print FP $mods;
	close(FP);
	notice("Creating [FILE] $name/mod_$name.c");
	open(FP, ">${name}/mod_${name}.c") \|\| die;
	print FP $src;
	close(FP);
	notice("Creating [FILE] $name/.deps");
	system("touch ${name}/.deps");

	exit(0);
	}


	if ($opt_q) {
	##
	## QUERY INFORMATION
	##
	my $result = get_vars(@args);
	print "$result";
	}

	if ($opt_c) {
	##
	## SHARED OBJECT COMPILATION
	##

	# split files into sources and objects
	my @srcs = ();
	my @objs = ();
	my $f;
	foreach $f (@args) {
	if ($f =~ m\|\.c$\|) {
	push(@srcs, $f);
	}
	else {
	push(@objs, $f);
	}
	}

	# determine output file
	my $dso_file;
	if ($opt_o eq '') {
	if ($#srcs > -1) {
	$dso_file = $srcs[0];
	$dso_file =~ s\|\.[^.]+$\|.la\|;
	}
	elsif ($#objs > -1) {
	$dso_file = $objs[0];
	$dso_file =~ s\|\.[^.]+$\|.la\|;
	}
	else {
	$dso_file = "mod_unknown.so";
	}
	}
	else {
	$dso_file = $opt_o;
	}

	# create compilation commands
	my @cmds = ();
	my $opt = '';
	my ($opt_Wc, $opt_I, $opt_D);
	foreach $opt_Wc (@opt_W) {
	$opt .= "$1 " if ($opt_Wc =~ m\|^\sc,(.)$\|);
	}
	foreach $opt_I (@opt_I) {
	$opt .= "-I$opt_I ";
	}
	foreach $opt_D (@opt_D) {
	$opt .= "-D$opt_D ";
	}
	my $cflags = "$CFG_CFLAGS";
	my $s;
	my $mod;
	foreach $s (@srcs) {
	my $slo = $s;
	$slo =~ s\|\.c$\|.slo\|;
	my $lo = $s;
	$lo =~ s\|\.c$\|.lo\|;
	my $la = $s;
	$la =~ s\|\.c$\|.la\|;
	my $o = $s;
	$o =~ s\|\.c$\|.o\|;
	push(@cmds, "$prefix/build/libtool $ltflags --mode=compile $CFG_CC $cflags -I$CFG_INCLUDEDIR $opt -c -o $lo $s && touch $slo");
	unshift(@objs, $lo);
	}

	# create link command
	my $o;
	my $lo;
	foreach $o (@objs) {
	$lo .= " $o";
	}
	my ($opt_Wl, $opt_L, $opt_l);
	foreach $opt_Wl (@opt_W) {
	if ($CFG_CC !~ m/gcc$/) {
	$opt .= " $1" if ($opt_Wl =~ m\|^\sl,(.)$\|);
	} else {
	$opt .= " -W$opt_Wl";
	}
	}
	foreach $opt_L (@opt_L) {
	$opt .= " -L$opt_L";
	}
	foreach $opt_l (@opt_l) {
	$opt .= " -l$opt_l";
	}

	push(@cmds, "$prefix/build/libtool $ltflags --mode=link $CFG_CC -o $dso_file -rpath $CFG_LIBEXECDIR -module -avoid-version $opt $lo");

	# execute the commands
	&execute_cmds(@cmds);

	# allow one-step compilation and installation
	if ($opt_i or $opt_e) {
	@args = ( $dso_file );
	}
	}

	if ($opt_i or $opt_e) {
	##
	## SHARED OBJECT INSTALLATION
	##

	# determine installation commands
	# and corresponding LoadModule/AddModule directives
	my @lmd = ();
	my @amd = ();
	my @cmds = ();
	my $f;
	foreach $f (@args) {
	if ($f !~ m#(\.so$\|\.la$)#) {
	error("file $f is not a shared object");
	exit(1);
	}
	my $t = $f;
	$t =~ s\|^.+/([^/]+)$\|$1\|;
	$t =~ s\|\.la$\|\.so\|;
	if ($opt_i) {
	push(@cmds, "$prefix/build/instdso.sh SH_LIBTOOL='" .
	"$prefix/build/libtool' $f $CFG_LIBEXECDIR");
	push(@cmds, "chmod 755 $CFG_LIBEXECDIR/$t");
	}

	# determine module symbolname and filename
	my $filename = '';
	if ($name eq 'unknown') {
	$name = '';
	my $base = $f;
	$base =~ s\|\.[^.]+$\|\|;
	if (-f "$base.c") {
	open(FP, "<$base.c");
	my $content = join('', <FP>);
	close(FP);
	if ($content =~ m\|.module\s+(?:AP_MODULE_DECLARE_DATA\s+)?([a-zA-Z0-9_]+)_module\s=\s.\|s) {
	$name = "$1";
	$filename = "$base.c";
	$filename =~ s\|^[^/]+/\|\|;
	}
	}
	if ($name eq '') {
	if ($base =~ m\|.*mod_([a-zA-Z0-9_]+)\..+\|) {
	$name = "$1";
	$filename = $base;
	$filename =~ s\|^[^/]+/\|\|;
	}
	}
	if ($name eq '') {
	error("Sorry, cannot determine bootstrap symbol name");
	error("Please specify one with option `-n'");
	exit(1);
	}
	}
	if ($filename eq '') {
	$filename = "mod_${name}.c";
	}
	my $dir = $CFG_LIBEXECDIR;
	$dir =~ s\|^$CFG_PREFIX/?\|\|;
	$dir =~ s\|(.)$\|$1/\|;
	$t =~ s\|\.la$\|.so\|;
	push(@lmd, sprintf("LoadModule %-18s %s", "${name}_module", "$dir$t"));
	push(@amd, sprintf("AddModule %s", $filename));
	}

	# execute the commands
	&execute_cmds(@cmds);

	# activate module via LoadModule/AddModule directive
	if ($opt_a or $opt_A) {
	if (not -f "$CFG_SYSCONFDIR/$CFG_TARGET.conf") {
	error("Config file $CFG_SYSCONFDIR/$CFG_TARGET.conf not found");
	exit(1);
	}

	open(FP, "<$CFG_SYSCONFDIR/$CFG_TARGET.conf") \|\| die;
	my $content = join('', <FP>);
	close(FP);

	if ($content !~ m\|\n#?\s*LoadModule\s+\|) {
	error("Activation failed for custom $CFG_SYSCONFDIR/$CFG_TARGET.conf file.");
	error("At least one `LoadModule' directive already has to exist.");
	exit(1);
	}

	my $lmd;
	my $c = '';
	$c = '#' if ($opt_A);
	foreach $lmd (@lmd) {
	my $what = $opt_A ? "preparing" : "activating";
	if ($content !~ m\|\n#?\s*$lmd\|) {
	$content =~ s\|^(.\n#?\sLoadModule\s+[^\n]+\n)\|$1$c$lmd\n\|sg;
	} else {
	$content =~ s\|^(.\n)#?\s$lmd[^\n]*\n\|$1$c$lmd\n\|sg;
	}
	$lmd =~ m\|LoadModule\s+(.+?)_module.*\|;
	notice("[$what module `$1' in $CFG_SYSCONFDIR/$CFG_TARGET.conf]");
	}
	my $amd;
	foreach $amd (@amd) {
	if ($content !~ m\|\n#?\s*$amd\|) {
	$content =~ s\|^(.\n#?\sAddModule\s+[^\n]+\n)\|$1$c$amd\n\|sg;
	} else {
	$content =~ s\|^(.\n)#?\s$amd[^\n]*\n\|$1$c$amd\n\|sg;
	}
	}
	if (@lmd or @amd) {
	if (open(FP, ">$CFG_SYSCONFDIR/$CFG_TARGET.conf.new")) {
	print FP $content;
	close(FP);
	system("cp $CFG_SYSCONFDIR/$CFG_TARGET.conf $CFG_SYSCONFDIR/$CFG_TARGET.conf.bak && " .
	"cp $CFG_SYSCONFDIR/$CFG_TARGET.conf.new $CFG_SYSCONFDIR/$CFG_TARGET.conf && " .
	"rm $CFG_SYSCONFDIR/$CFG_TARGET.conf.new");
	} else {
	notice("unable to open configuration file");
	}
	}
	}
	}

	sub error{
	print STDERR "apxs:Error: $_[0].\n";
	}

	sub notice{
	print STDERR "$_[0]\n";
	}

	##EOF##
	__DATA__
	##
	## Makefile -- Build procedure for sample %NAME% Apache module
	## Autogenerated via ``apxs -n %NAME% -g''.
	##

	builddir=$(shell pwd)
	top_srcdir=%PREFIX%
	top_builddir=%PREFIX%
	include %PREFIX%/build/special.mk

	# the used tools
	APXS=apxs
	APACHECTL=apachectl

	# additional defines, includes and libraries
	#DEF=-Dmy_define=my_value
	#INC=-Imy/include/dir
	#LIB=-Lmy/lib/dir -lmylib

	# the default target
	all: local-shared-build

	# install the shared object file into Apache
	install: install-modules

	# cleanup
	clean:
	-rm -f mod_%NAME%.o mod_%NAME%.lo mod_%NAME%.slo mod_%NAME%.la

	# simple test
	test: reload
	lynx -mime_header http://localhost/%NAME%

	# install and activate shared object by reloading Apache to
	# force a reload of the shared object file
	reload: install restart

	# the general Apache start/restart/stop
	# procedures
	start:
	$(APACHECTL) start
	restart:
	$(APACHECTL) restart
	stop:
	$(APACHECTL) stop

	-=#=-
	mod_%NAME%.la: mod_%NAME%.slo
	$(SH_LINK) -rpath $(libexecdir) -module -avoid-version mod_%NAME%.lo
	DISTCLEAN_TARGETS = modules.mk
	shared = mod_%NAME%.la
	-=#=-
	/*
	** mod_%NAME%.c -- Apache sample %NAME% module
	** [Autogenerated via ``apxs -n %NAME% -g'']
	**
	** To play with this sample module first compile it into a
	** DSO file and install it into Apache's modules directory
	** by running:
	**
	** $ apxs -c -i mod_%NAME%.c
	**
	** Then activate it in Apache's %TARGET%.conf file for instance
	** for the URL /%NAME% in as follows:
	**
	** # %TARGET%.conf
	** LoadModule %NAME%_module modules/mod_%NAME%.so
	** <Location /%NAME%>
	** SetHandler %NAME%
	** </Location>
	**
	** Then after restarting Apache via
	**
	** $ apachectl restart
	**
	** you immediately can request the URL /%NAME% and watch for the
	** output of this module. This can be achieved for instance via:
	**
	** $ lynx -mime_header http://localhost/%NAME%
	**
	** The output should be similar to the following one:
	**
	** HTTP/1.1 200 OK
	** Date: Tue, 31 Mar 1998 14:42:22 GMT
	** Server: Apache/1.3.4 (Unix)
	** Connection: close
	** Content-Type: text/html
	**
	** The sample page from mod_%NAME%.c
	*/

	#include "httpd.h"
	#include "http_config.h"
	#include "http_protocol.h"
	#include "ap_config.h"

	/* The sample content handler */
	static int %NAME%_handler(request_rec *r)
	{
	if (strcmp(r->handler, "%NAME%")) {
	return DECLINED;
	}
	r->content_type = "text/html";

	if (!r->header_only)
	ap_rputs("The sample page from mod_%NAME%.c\n", r);
	return OK;
	}

	static void %NAME%_register_hooks(apr_pool_t *p)
	{
	ap_hook_handler(%NAME%_handler, NULL, NULL, APR_HOOK_MIDDLE);
	}

	/* Dispatch list for API hooks */
	module AP_MODULE_DECLARE_DATA %NAME%_module = {
	STANDARD20_MODULE_STUFF,
	NULL, /* create per-dir config structures */
	NULL, /* merge per-dir config structures */
	NULL, /* create per-server config structures */
	NULL, /* merge per-server config structures */
	NULL, /* table of config file commands */
	%NAME%_register_hooks /* register hooks */
	};