dnl
dnl Autoconf configuration for Apache httpd
dnl
dnl     Use ./buildconf to produce a configure script
dnl

AC_PREREQ(2.13)
AC_INIT(ABOUT_APACHE)

AC_CONFIG_HEADER(include/ap_config_auto.h)
AC_CONFIG_AUX_DIR(build)

dnl #
dnl # Include our own M4 macros along with those for APR and libtool
dnl #
sinclude(build/apr_common.m4)
sinclude(build/find_apr.m4)
sinclude(build/find_apu.m4)
sinclude(acinclude.m4)

dnl XXX we can't just use AC_PREFIX_DEFAULT because that isn't subbed in
dnl by configure until it is too late.  Is that how it should be or not?
dnl Something seems broken here.                                               
AC_PREFIX_DEFAULT(/usr/local/apache2)

dnl Get the layout here, so we can pass the required variables to apr
APACHE_ENABLE_LAYOUT

dnl reparse the configure arguments.
APR_PARSE_ARGUMENTS

dnl export expanded and relative configure argument variables
APACHE_EXPORT_ARGUMENTS

dnl Save user-defined environment settings for later restoration
dnl
APR_SAVE_THE_ENVIRONMENT(CPPFLAGS)
APR_SAVE_THE_ENVIRONMENT(CFLAGS)
APR_SAVE_THE_ENVIRONMENT(CXXFLAGS)
APR_SAVE_THE_ENVIRONMENT(LDFLAGS)
APR_SAVE_THE_ENVIRONMENT(LIBS)
APR_SAVE_THE_ENVIRONMENT(INCLUDES)

dnl Generate ./config.nice for reproducing runs of configure
dnl
APR_CONFIG_NICE(config.nice)

nl='
'
dnl Check that mkdir -p works
APR_MKDIR_P_CHECK($top_srcdir/build/mkdir.sh)

dnl ## Run configure for packages Apache uses

dnl shared library support for these packages doesn't currently
dnl work on some platforms

AC_CANONICAL_SYSTEM

orig_prefix="$prefix"

echo $ac_n "${nl}Configuring Apache Portable Runtime library ...${nl}"

APR_FIND_APR("$srcdir/srclib/apr", "./srclib/apr", 1)

if test "$apr_found" = "no"; then
  AC_MSG_ERROR([APR not found.  Please read the documentation.])
fi

if test "$apr_found" = "reconfig"; then
  APR_SUBDIR_CONFIG(srclib/apr,
                    [$apache_apr_flags --prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir --includedir=$includedir --bindir=$bindir --datadir=$datadir --with-installbuilddir=$installbuilddir],
                    [--enable-layout=*|\'--enable-layout=*])
  dnl We must be the first to build and the last to be cleaned
  AP_BUILD_SRCLIB_DIRS="apr $AP_BUILD_SRCLIB_DIRS"
  AP_CLEAN_SRCLIB_DIRS="$AP_CLEAN_SRCLIB_DIRS apr"
fi

APR_SETIFNULL(CC, `$apr_config --cc`)
APR_SETIFNULL(CPP, `$apr_config --cpp`)
APR_ADDTO(CFLAGS, `$apr_config --cflags`)
APR_ADDTO(CPPFLAGS, `$apr_config --cppflags`)
APR_ADDTO(LDFLAGS, `$apr_config --ldflags`)
APR_ADDTO(INCLUDES, `$apr_config --includes`)
SHLIBPATH_VAR=`$apr_config --shlib-path-var`
APR_BINDIR=`$apr_config --bindir`
APR_INCLUDEDIR=`$apr_config --includedir`

echo $ac_n "${nl}Configuring Apache Portable Runtime Utility library...${nl}"

APR_FIND_APU("$srcdir/srclib/apr-util", "./srclib/apr-util", 1)

if test "$apu_found" = "no"; then
  AC_MSG_ERROR([APR-util not found.  Please read the documentation.])
fi

# Catch some misconfigurations:
case ${apr_found}.${apu_found} in
reconfig.yes)
  AC_MSG_ERROR([Cannot use an external APR-util with the bundled APR])
  ;;
yes.reconfig)
  AC_MSG_ERROR([Cannot use an external APR with the bundled APR-util])
  ;;
esac  

if test "$apu_found" = "reconfig"; then
  APR_SUBDIR_CONFIG(srclib/apr-util,
                    [--with-apr=../apr --prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir --includedir=$includedir --bindir=$bindir],
                    [--enable-layout=*|\'--enable-layout=*])
  dnl We must be the last to build and the first to be cleaned
  AP_BUILD_SRCLIB_DIRS="$AP_BUILD_SRCLIB_DIRS apr-util"
  AP_CLEAN_SRCLIB_DIRS="apr-util $AP_CLEAN_SRCLIB_DIRS"
fi

APR_ADDTO(LDFLAGS, `$apu_config --ldflags`)
APR_ADDTO(INCLUDES, `$apu_config --includes`)
APU_BINDIR=`$apu_config --bindir`
APU_INCLUDEDIR=`$apu_config --includedir`

dnl In case we picked up CC and CPP from APR, get that info into the
dnl config cache so that PCRE uses it.  Otherwise, CC and CPP used for
dnl PCRE and for our config tests will be whatever PCRE determines.
AC_PROG_CC
AC_PROG_CPP

echo $ac_n "${nl}Configuring PCRE regular expression library ...${nl}"

APR_SUBDIR_CONFIG(srclib/pcre,
                  [--prefix=$prefix --exec-prefix=$exec_prefix --libdir=$libdir --includedir=$includedir --bindir=$bindir])

echo $ac_n "${nl}Configuring Apache httpd ...${nl}"

dnl Absolute source/build directory
abs_srcdir=`(cd $srcdir && pwd)`
abs_builddir=`pwd`

dnl If the source dir is not equal to the build dir, 
dnl then we are running in VPATH mode.

APR_ADDTO(INCLUDES, [-I.])

if test "$abs_builddir" != "$abs_srcdir"; then
  USE_VPATH=1
  APR_ADDTO(INCLUDES, [-I\$(srcdir) -I\$(top_builddir)/server/mpm/\$(MPM_SUBDIR_NAME) -I\$(top_builddir)/include])
fi

APR_ADDTO(INCLUDES, [-I\$(top_srcdir)/os/\$(OS_DIR) -I\$(top_srcdir)/server/mpm/\$(MPM_SUBDIR_NAME) -I\$(top_srcdir)/modules/http -I\$(top_srcdir)/modules/filters -I\$(top_srcdir)/modules/proxy -I\$(top_srcdir)/include -I\$(top_srcdir)/modules/generators])

echo $ac_n "${nl}Applying OS-specific hints for httpd ...${nl}"

case $host in
  *os2*)
      # Use a custom made libtool replacement
      echo "using aplibtool"
      LIBTOOL="$abs_srcdir/srclib/apr/build/aplibtool"
      SH_LIBTOOL="$LIBTOOL --shared --export-all"
      SH_LIBS="\$(ALL_LIBS)"
      CORE_IMPLIB_FILE="ApacheCoreOS2.la"
      CORE_IMPLIB="$abs_srcdir/server/$CORE_IMPLIB_FILE"
      MK_IMPLIB="emximp"
      other_targets="$other_targets os2core"
      INSTALL_PROG_FLAGS="-e .exe"
      SHLTCFLAGS=""
      LTCFLAGS=""
      ;;
  *)
      if test "x$LTFLAGS" = "x"; then
          LTFLAGS='--silent'
      fi
      my_libtool=`$apr_config --apr-libtool`
      LIBTOOL="$my_libtool \$(LTFLAGS)"
      libtoolversion=`$my_libtool --version`
      case $libtoolversion in
          *1.[[45]]*)
              SH_LIBTOOL='$(LIBTOOL)'
              SHLTCFLAGS="-prefer-pic"
              LTCFLAGS="-prefer-non-pic -static"
              ;;
          *)
              SH_LIBTOOL='$(SHELL) $(top_builddir)/shlibtool $(LTFLAGS)'
              SHLTCFLAGS=""
              LTCFLAGS=""
              ;;
      esac
      ;;
esac
APACHE_SUBST(SHLTCFLAGS)
APACHE_SUBST(LTCFLAGS)

AP_SIG_GRACEFUL=USR1

case $host in
  *-apple-aux3*)
      APR_SETVAR(APACHE_MPM, [prefork])
      APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
      ;;
  *-beos*)
      APR_SETVAR(APACHE_MPM, [beos])
      APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
      ;;
  *os2_emx*)
      APR_SETVAR(APACHE_MPM, [mpmt_os2])
      APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
      ;;
  *-linux-*)
      case `uname -r` in
        2.0* ) 
            AP_SIG_GRACEFUL=WINCH
            ;;
        2.[[2-9]]* ) 
            APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
            ;;
        * )
            ;;
      esac
      ;;
  *486-*-bsdi* | *-netbsd* | *-freebsd* | *-apple-darwin* | *-dec-osf* | *-qnx)
      APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
      ;;
  *-solaris2*)
      dnl This is a hack -- we should be using AC_TRY_RUN instead
      ap_platform_runtime_link_flag="-R"
      dnl solaris 8 and above don't have a thundering herd
      dnl not sure about rev's before this one.
      case `uname -r` in
        5.[567]*)
            ;;
        * )
            APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
            ;;
      esac
      ;;
  *cygwin*)
      APR_SETVAR(APACHE_MPM, [prefork])
      APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
      ;;
  *aix*)
      aixver=`echo $host | sed 's/^[[^0-9]]*//' | sed 's/\.//g'`
      if test $aixver -ge 4320; then
        APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
      fi
      ;;
  *os390*)
      APR_SETVAR(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, [1])
      ;;
esac

APR_SETVAR(AP_NONBLOCK_WHEN_MULTI_LISTEN, [1])

dnl
dnl Process command line arguments. This is done early in the process so the
dnl user can get feedback quickly in case of an error.
dnl
dnl ### need to move some of the arguments "up here"

dnl ## Check for programs

AC_PATH_PROG(RM, rm)
AC_PROG_AWK
AC_PROG_INSTALL
AC_PROG_LN_S
AC_CHECK_TOOL(RANLIB, ranlib, true)
dnl AC_PATH_PROG(PERL_PATH, perl)

dnl Various OS checks that apparently set required flags
ifdef([AC_USE_SYSTEM_EXTENSIONS], [
AC_USE_SYSTEM_EXTENSIONS
], [
AC_AIX
AC_MINIX
])

AC_ISC_POSIX

dnl ## Check for libraries

dnl ## Check for header files

dnl I think these are just used all over the place, so just check for
dnl them at the base of the tree. If some are specific to a single
dnl directory, they should be moved (Comment #Spoon)

dnl Regarding standard header files: AC_HEADER_STDC doesn't set symbols
dnl HAVE_STRING_H, HAVE_STDLIB_H, etc., so those are checked for
dnl explicitly so that the normal HAVE_xxx_H symbol is defined.

AC_HEADER_STDC
AC_CHECK_HEADERS( \
string.h \
limits.h \
unistd.h \
sys/socket.h \
pwd.h \
grp.h \
strings.h \
sys/prctl.h \
sys/processor.h \
sys/sem.h
)
AC_HEADER_SYS_WAIT

dnl ## Check for typedefs, structures, and compiler characteristics.

AC_C_CONST
if test "$ac_cv_prog_gcc" = "yes"; then
  APR_ADDTO(NOTEST_CPPFLAGS,-DAP_HAVE_DESIGNATED_INITIALIZER)
fi

dnl ## Check for library functions

dnl See Comment #Spoon

AC_CHECK_FUNCS( \
getpwnam \
getgrnam \
initgroups \
bindprocessor \
prctl \
timegm \
)

dnl ## Check for the tm_gmtoff field in struct tm to get the timezone diffs
AC_CACHE_CHECK([for tm_gmtoff in struct tm], ac_cv_struct_tm_gmtoff,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <time.h>], [struct tm tm; tm.tm_gmtoff;],
  ac_cv_struct_tm_gmtoff=yes, ac_cv_struct_tm_gmtoff=no)])
if test "$ac_cv_struct_tm_gmtoff" = "yes"; then
    AC_DEFINE(HAVE_GMTOFF)
fi

dnl ## Set up any appropriate OS-specific environment variables for apachectl

case $host in
    *aix*)
        # for 32-bit builds, increase MAXDATA to allow lots of threads
        if test x$OBJECT_MODE != x64; then
            OS_SPECIFIC_VARS="LDR_CNTRL=\"MAXDATA=0x80000000\" ; export LDR_CNTRL ;"
        fi
        OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS AIXTHREAD_SCOPE=S ; export AIXTHREAD_SCOPE"
        OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; AIXTHREAD_MUTEX_DEBUG=OFF ; export AIXTHREAD_MUTEX_DEBUG"
        OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; AIXTHREAD_RWLOCK_DEBUG=OFF ; export AIXTHREAD_RWLOCK_DEBUG"
        OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; AIXTHREAD_COND_DEBUG=OFF ; export AIXTHREAD_COND_DEBUG"
        OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; SPINLOOPTIME=1000 ; export SPINLOOPTIME"
        OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; YIELDLOOPTIME=8 ; export YIELDLOOPTIME"
        OS_SPECIFIC_VARS="$OS_SPECIFIC_VARS ; MALLOCMULTIHEAP=considersize,heaps:8 ; export MALLOCMULTIHEAP"
        ;;
    *os390*)
        OS_SPECIFIC_VARS="export _CEE_RUNOPTS=\"STACK(,,ANY)\" ; export _EDC_ADD_ERRNO2=1"
        ;;
    *)
        OS_SPECIFIC_VARS=""
esac
      
AC_ARG_WITH(port,APACHE_HELP_STRING(--with-port=PORT,Port on which to listen (default is 80)),
        [if test "$withval" = "yes"; then AC_MSG_ERROR('option --with-port requires a value (the TCP port number)'); else PORT="$withval"; fi],
	[PORT=80])

APR_CHECK_APR_DEFINE(APR_HAVE_IPV6)

AC_ARG_ENABLE(v4-mapped,APACHE_HELP_STRING(--enable-v4-mapped,Allow IPv6 sockets to handle IPv4 connections),
[ 
  v4mapped=$enableval
],
[
    case $host in
    *freebsd5*|*netbsd*|*openbsd*)
        v4mapped=no
        ;;
    *)
        v4mapped=yes
        ;;
esac
])

if test $v4mapped = "yes" -o $ac_cv_define_APR_HAVE_IPV6 = "no"; then
    nonssl_listen_stmt_1=""
    nonssl_listen_stmt_2="Listen @@Port@@"
    if test $ac_cv_define_APR_HAVE_IPV6 = "yes"; then
        AC_DEFINE(AP_ENABLE_V4_MAPPED, 1,
                  [Allow IPv4 connections on IPv6 listening sockets])
    fi
else
    nonssl_listen_stmt_1="Listen 0.0.0.0:@@Port@@"
    nonssl_listen_stmt_2="Listen [[::]]:@@Port@@"
fi

AC_ARG_ENABLE(exception-hook,APACHE_HELP_STRING(--enable-exception-hook,Enable fatal exception hook),
[
    AC_DEFINE(AP_ENABLE_EXCEPTION_HOOK, 1,
              [Allow modules to run hook after a fatal exception])
])dnl

AC_ARG_ENABLE(maintainer-mode,APACHE_HELP_STRING(--enable-maintainer-mode,Turn on debugging and compile time warnings),
[
  APR_ADDTO(CPPFLAGS, -DAP_DEBUG)
])dnl

prefix="$orig_prefix"
APACHE_ENABLE_MODULES

dnl reading config stubs
esyscmd(./build/config-stubs .)

APACHE_SUBST(progname)
APACHE_SUBST(MPM_LIB)
APACHE_SUBST(OS)
APACHE_SUBST(OS_DIR)
APACHE_SUBST(BUILTIN_LIBS)
APACHE_SUBST(SHLIBPATH_VAR)
APACHE_SUBST(OS_SPECIFIC_VARS)

PRE_SHARED_CMDS='echo ""'
POST_SHARED_CMDS='echo ""'

dnl apache_need_shared tells us if Apache modules are being built as DSOs

if test "$apache_need_shared" = "yes"; then
  if test -f $ac_aux_dir/ltconfig; then
    $SHELL $ac_aux_dir/ltconfig --output=shlibtool --disable-static --srcdir=$ac_aux_dir --cache-file=./config.cache $ac_aux_dir/ltmain.sh
  fi
  shared_build="shared-build"
fi

dnl enable_so tells us if *any* modules can be built as DSOs

if test "$enable_so" = "yes"; then
  case $host in
    *-ibm-aix*)
      HTTPD_LDFLAGS="$HTTPD_LDFLAGS -Wl,-uXML_Parse -Wl,-bE:$abs_builddir/server/httpd.exp"
      SH_LDFLAGS="$SH_LDFLAGS \$(EXTRA_LDFLAGS) \$(EXTRA_LIBS)"
      UTIL_LDFLAGS="$UTIL_LDFLAGS -Wl,-uXML_Parse"
      ;;
    *beos)
      SH_LDFLAGS='$(top_builddir)/_APP_'
      PRE_SHARED_CMDS='ln -s $(top_builddir)/httpd $(top_builddir)/_APP_'
      POST_SHARED_CMDS='rm $(top_builddir)/_APP_'
      ;;
    *os390)
      HTTPD_LDFLAGS="$HTTPD_LDFLAGS --main=$abs_srcdir/server/main.o --core-dll=$abs_srcdir/apachecore.dll"
      SH_LDFLAGS="$SH_LDFLAGS --core-dll=$abs_srcdir/apachecore.dll"
  esac
fi

APACHE_SUBST(PRE_SHARED_CMDS)
APACHE_SUBST(POST_SHARED_CMDS)
APACHE_SUBST(shared_build)

AC_ARG_WITH(program-name,
APACHE_HELP_STRING(--with-program-name,alternate executable name),[
  progname="$withval" ], [
  progname="httpd"] )

# SuExec parameters
AC_ARG_WITH(suexec-bin,
APACHE_HELP_STRING(--with-suexec-bin,Path to suexec binary),[
  AC_DEFINE_UNQUOTED(SUEXEC_BIN, "$withval", [Path to suexec binary] )
] )

AC_ARG_WITH(suexec-caller,
APACHE_HELP_STRING(--with-suexec-caller,User allowed to call SuExec),[
  AC_DEFINE_UNQUOTED(AP_HTTPD_USER, "$withval", [User allowed to call SuExec] ) ] )

AC_ARG_WITH(suexec-userdir,
APACHE_HELP_STRING(--with-suexec-userdir,User subdirectory),[
  AC_DEFINE_UNQUOTED(AP_USERDIR_SUFFIX, "$withval", [User subdirectory] ) ] )

AC_ARG_WITH(suexec-docroot,
APACHE_HELP_STRING(--with-suexec-docroot,SuExec root directory),[
  AC_DEFINE_UNQUOTED(AP_DOC_ROOT, "$withval", [SuExec root directory] ) ] )

AC_ARG_WITH(suexec-uidmin,
APACHE_HELP_STRING(--with-suexec-uidmin,Minimal allowed UID),[
  AC_DEFINE_UNQUOTED(AP_UID_MIN, $withval, [Minimum allowed UID] ) ] )

AC_ARG_WITH(suexec-gidmin,
APACHE_HELP_STRING(--with-suexec-gidmin,Minimal allowed GID),[
  AC_DEFINE_UNQUOTED(AP_GID_MIN, $withval, [Minimum allowed GID] ) ] )

AC_ARG_WITH(suexec-logfile,
APACHE_HELP_STRING(--with-suexec-logfile,Set the logfile),[
  AC_DEFINE_UNQUOTED(AP_LOG_EXEC, "$withval", [SuExec log file] ) ] )

AC_ARG_WITH(suexec-safepath,
APACHE_HELP_STRING(--with-suexec-safepath,Set the safepath),[
  AC_DEFINE_UNQUOTED(AP_SAFE_PATH, "$withval", [safe shell path for SuExec] ) ] )

AC_ARG_WITH(suexec-umask,
APACHE_HELP_STRING(--with-suexec-umask,umask for suexec'd process),[
  AC_DEFINE_UNQUOTED(AP_SUEXEC_UMASK, 0$withval, [umask for suexec'd process] ) ] )

dnl AP_LIBS specifies the actual libraries. note we have some required libs.
AP_LIBS="$abs_builddir/srclib/pcre/libpcre.la $AP_LIBS"

dnl APR should go after the other libs, so the right symbols can be picked up
AP_LIBS="$AP_LIBS `$apu_config --link-libtool --libs` `$apr_config --link-libtool --libs`"
APACHE_SUBST(AP_LIBS)
APACHE_SUBST(AP_BUILD_SRCLIB_DIRS)
APACHE_SUBST(AP_CLEAN_SRCLIB_DIRS)

AC_DEFINE(AP_USING_AUTOCONF, 1,
		[Using autoconf to configure Apache])

if test "$SINGLE_LISTEN_UNSERIALIZED_ACCEPT" = "1"; then
    AC_DEFINE(SINGLE_LISTEN_UNSERIALIZED_ACCEPT, 1, 
              [This platform doesn't suffer from the thundering herd problem])
fi

if test "$AP_NONBLOCK_WHEN_MULTI_LISTEN" = "1"; then
    AC_DEFINE(AP_NONBLOCK_WHEN_MULTI_LISTEN, 1, 
              [Listening sockets are non-blocking when there are more than 1])
fi

AC_DEFINE_UNQUOTED(AP_SIG_GRACEFUL, SIG$AP_SIG_GRACEFUL, [Signal used to gracefully restart])
AC_DEFINE_UNQUOTED(AP_SIG_GRACEFUL_STRING, "SIG$AP_SIG_GRACEFUL", [Signal used to gracefully restart (as a quoted string)])
AC_DEFINE_UNQUOTED(AP_SIG_GRACEFUL_SHORT, $AP_SIG_GRACEFUL, [Signal used to gracefully restart (without SIG prefix)])
AP_SIG_GRACEFUL_SHORT=$AP_SIG_GRACEFUL
AP_SIG_GRACEFUL=SIG$AP_SIG_GRACEFUL_SHORT
AC_SUBST(AP_SIG_GRACEFUL)
AC_SUBST(AP_SIG_GRACEFUL_STRING)
AC_SUBST(AP_SIG_GRACEFUL_SHORT)

dnl check for endianness
if test "$cross_compiling" = "no"; then
  AC_C_BIGENDIAN
else
  AC_DEFINE(AP_UNKNOWN_BYTE_ORDER,1,
		[byte order is unknown due to cross-compilation])
fi

APACHE_FAST_OUTPUT(Makefile modules/Makefile srclib/Makefile) 
APACHE_FAST_OUTPUT(os/beos/Makefile os/os2/Makefile os/Makefile)
APACHE_FAST_OUTPUT(os/unix/Makefile server/Makefile)
APACHE_FAST_OUTPUT(support/Makefile srclib/pcre/Makefile)

if test -d ./test; then
    APACHE_FAST_OUTPUT(test/Makefile)
fi

dnl ## Finalize the variables
echo $ac_n "${nl}Restore user-defined environment settings...${nl}"

APR_RESTORE_THE_ENVIRONMENT(CPPFLAGS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(CFLAGS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(CXXFLAGS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(LDFLAGS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(LIBS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(INCLUDES, EXTRA_)

echo $ac_n "${nl}Construct makefiles and header files...${nl}"

APACHE_GEN_CONFIG_VARS

dnl ## Build modules.c
rm -f modules.c
echo $MODLIST | $AWK -f $srcdir/build/build-modules-c.awk > modules.c

APR_EXPAND_VAR(ap_prefix, $prefix)
AC_DEFINE_UNQUOTED(HTTPD_ROOT, "${ap_prefix}",
	[Root directory of the Apache install area])
AC_DEFINE_UNQUOTED(SERVER_CONFIG_FILE, "${rel_sysconfdir}/${progname}.conf",
	[Location of the config file, relative to the Apache root directory])
AC_DEFINE_UNQUOTED(AP_TYPES_CONFIG_FILE, "${rel_sysconfdir}/mime.types",
	[Location of the MIME types config file, relative to the Apache root directory])
AC_DEFINE_UNQUOTED(APACHE_MPM_DIR, "$MPM_DIR",
	[Location of the source for the current MPM])

perlbin=`$ac_aux_dir/PrintPath perl`
if test "x$perlbin" = "x"; then
    perlbin="/replace/with/path/to/perl/interpreter"
fi
AC_SUBST(perlbin)

dnl If we are running on BSD/OS, we need to use the BSD .include syntax.

BSD_MAKEFILE=no
ap_make_include=include
ap_make_delimiter=' '
case $host in
*bsdi*)
    # Check whether they've installed GNU make
    if make --version > /dev/null 2>&1; then
        true
    else
        BSD_MAKEFILE=yes
        ap_make_include=.include
        ap_make_delimiter='"'
    fi
    ;;
esac
AC_SUBST(ap_make_include)
AC_SUBST(ap_make_delimiter)

dnl Ensure that docs/conf is created.
test -d docs/conf||$mkdir_p docs/conf

dnl Ensure that the httpd version is included
HTTPD_VERSION=`$srcdir/build/get-version.sh all $srcdir/include/ap_release.h AP_SERVER`
AC_SUBST(HTTPD_VERSION)

AC_OUTPUT($APACHE_OUTPUT_FILES docs/conf/httpd-std.conf docs/conf/ssl-std.conf include/ap_config_layout.h support/apxs support/apachectl support/dbmmanage support/envvars-std support/log_server_status support/logresolve.pl support/phf_abuse_log.cgi support/split-logfile build/rules.mk build/pkg/pkginfo,[true],[
  APACHE_GEN_MAKEFILES
])