dnl                                               -*- Autoconf -*-
dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.60)
AC_INIT([lighttpd], [1.4.48], [contact@lighttpd.net])
AC_CONFIG_SRCDIR([src/server.c])
AC_CONFIG_HEADER([config.h])
AC_CONFIG_MACRO_DIR([m4])

AC_CANONICAL_HOST

AM_INIT_AUTOMAKE([1.14 -Wall -Wno-portability -Wno-override foreign dist-xz tar-ustar serial-tests silent-rules])

dnl @synopsis TRY_CFLAGS [compiler flags]
dnl @summary check whether compiler supports given flags and adds them to CFLAGS
AC_DEFUN([TRY_CFLAGS],
[dnl
  AC_MSG_CHECKING([if $CC supports $1])
  AC_LANG_PUSH([C])
  ac_try_cflags_saved_cflags="${CFLAGS}"
  CFLAGS="${CFLAGS} $1"
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
    [AC_MSG_RESULT([yes])],
    [
      AC_MSG_ERROR([no])
      CFLAGS="${ac_try_cflags_saved_cflags}"
    ]
  )
  AC_LANG_POP([C])
])

dnl @synopsis TRY_LDFLAGS [linker flags]
dnl @summary check whether linker supports given flags and adds them to LDFLAGS
AC_DEFUN([TRY_LDFLAGS],
[dnl
  AC_MSG_CHECKING([if $LD supports $1])
  AC_LANG_PUSH([C])
  ac_try_ldflags_saved_ldflags="${LDFLAGS}"
  LDFLAGS="${LDFLAGS} $1"
  AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
    [AC_MSG_RESULT([yes])],
    [
      AC_MSG_ERROR([no])
      LDFLAGS="${ac_try_ldflags_saved_cflags}"
    ]
  )
  AC_LANG_POP([C])
])

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CC_STDC
AX_PROG_CC_FOR_BUILD
AC_PROG_LD
AC_PROG_INSTALL
AC_PROG_AWK
AC_PROG_CPP
AC_PROG_MAKE_SET

AC_USE_SYSTEM_EXTENSIONS
AM_PROG_AR

dnl AC_CANONICAL_HOST
case $host_os in
	*darwin*|*cygwin*|*aix*|*mingw*|*midipix* ) NO_RDYNAMIC=yes;;
	* ) NO_RDYNAMIC=no;;
esac
AM_CONDITIONAL(NO_RDYNAMIC, test x$NO_RDYNAMIC = xyes)

if test -z "$LIGHTTPD_STATIC"; then
  LIGHTTPD_STATIC=no
fi
AM_CONDITIONAL(LIGHTTPD_STATIC, test x$LIGHTTPD_STATIC = xyes)

AC_EXEEXT

dnl libtool
AC_DISABLE_STATIC
AC_ENABLE_SHARED

AC_LIBTOOL_DLOPEN
AC_PROG_LIBTOOL

dnl for solaris
CPPFLAGS="${CPPFLAGS} -D_REENTRANT"

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([arpa/inet.h fcntl.h netinet/in.h stdlib.h string.h strings.h \
sys/socket.h sys/time.h unistd.h sys/sendfile.h sys/uio.h \
getopt.h sys/epoll.h sys/select.h poll.h sys/poll.h sys/devpoll.h sys/filio.h \
sys/mman.h sys/event.h port.h pwd.h \
sys/resource.h sys/un.h syslog.h sys/prctl.h uuid/uuid.h])

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_C_CHAR_UNSIGNED
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T

AC_CHECK_MEMBER(struct tm.tm_gmtoff,[AC_DEFINE([HAVE_STRUCT_TM_GMTOFF],[1],[gmtoff in struct tm])],,[#include <time.h>])
AC_CHECK_TYPES(struct sockaddr_storage,,,[#include <sys/socket.h>])
AC_CHECK_TYPES(socklen_t,,,[#include <sys/types.h>
#include <sys/socket.h>])

dnl Checks for library functions.
AC_FUNC_FORK
dnl AC_FUNC_MALLOC
dnl AC_FUNC_MMAP
dnl AC_FUNC_REALLOC
AC_TYPE_SIGNAL
AC_FUNC_STAT
AC_FUNC_STRFTIME

if test -z "$PKG_CONFIG"; then
  AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
fi

dnl checking for libev
AC_MSG_CHECKING(for libev support)
AC_ARG_WITH(libev,
    AC_HELP_STRING([--with-libev@<:@=PATH@:>@],[Include libev support for fdevent handlers in PATH/include and PATH/lib]),
    [WITH_LIBEV=$withval],[WITH_LIBEV=no])

LIBEV_CFLAGS=""
LIBEV_LIBS=""

if test "$WITH_LIBEV" != "no"; then
	PKG_CHECK_MODULES(LIBEV, libev, [], [
		dnl no pkg-config for libev, searching manually:

		if test "$WITH_LIBEV" != "yes"; then
			LIBEV_CFLAGS="-I$WITH_LIBEV/include"
			LIBEV_LIBS="-L$WITH_LIBEV/lib -lev"
		else
			AC_CHECK_HEADERS([ev.h],[
				AC_CHECK_LIB([ev], [ev_time], [
						LIBEV_CFLAGS=""
						LIBEV_LIBS="-lev"
					],[
					AC_MSG_ERROR([libev not found])
					]
				)],[
					AC_MSG_ERROR([libev not found])
				]
			)
		fi
	])

	AC_DEFINE([HAVE_LIBEV], [1], [libev support])
fi

AC_SUBST(LIBEV_CFLAGS)
AC_SUBST(LIBEV_LIBS)
AC_MSG_RESULT([$WITH_LIBEV])

dnl Checks for database.
MYSQL_INCLUDE=""
MYSQL_LIBS=""

AC_MSG_CHECKING(for MySQL support)
AC_ARG_WITH(mysql,
    AC_HELP_STRING([--with-mysql@<:@=PATH@:>@],[Include MySQL support. PATH is the path to 'mysql_config']),
    [WITH_MYSQL=$withval],[WITH_MYSQL=no])

if test "$WITH_MYSQL" != "no"; then
  AC_MSG_RESULT(yes)
  if test "$WITH_MYSQL" = "yes"; then
    AC_PATH_PROG(MYSQL_CONFIG, mysql_config)
  else
    MYSQL_CONFIG=$WITH_MYSQL
  fi

  if test "$MYSQL_CONFIG" = ""; then
    AC_MSG_ERROR(mysql_config is not found)
  fi
  if test \! -x $MYSQL_CONFIG; then
    AC_MSG_ERROR(mysql_config not exists or not executable, use --with-mysql=path-to-mysql_config)
  fi

  if $MYSQL_CONFIG | grep -- '--include' > /dev/null ; then
    MYSQL_INCLUDE="`$MYSQL_CONFIG --include | sed s/\'//g`"
  else
    MYSQL_INCLUDE="`$MYSQL_CONFIG --cflags | sed s/\'//g`"
  fi
  MYSQL_LIBS="`$MYSQL_CONFIG --libs | sed s/\'//g`"

  AC_MSG_CHECKING(for MySQL includes at)
  AC_MSG_RESULT($MYSQL_INCLUDE)

  AC_MSG_CHECKING(for MySQL libraries at)
  AC_MSG_RESULT($MYSQL_LIBS)
dnl check for errmsg.h, which isn't installed by some versions of 3.21
  old_CPPFLAGS="$CPPFLAGS"
  CPPFLAGS="$CPPFLAGS $MYSQL_INCLUDE"
  AC_CHECK_HEADERS(errmsg.h mysql.h)
  CPPFLAGS="$old_CPPFLAGS"

  AC_DEFINE([HAVE_MYSQL], [1], [mysql support])
else
  AC_MSG_RESULT(no)
fi
AM_CONDITIONAL(BUILD_WITH_MYSQL, test ! $WITH_MYSQL = no)

AC_SUBST(MYSQL_LIBS)
AC_SUBST(MYSQL_INCLUDE)


dnl Checks for database.
PGSQL_INCLUDE=""
PGSQL_LIBS=""

AC_MSG_CHECKING(for PgSQL support)
AC_ARG_WITH(pgsql,
    AC_HELP_STRING([--with-pgsql@<:@=PATH@:>@],[Include PgSQL support. PATH is the path to 'pg_config']),
    [WITH_PGSQL=$withval],[WITH_PGSQL=no])

if test "$WITH_PGSQL" != "no"; then
  AC_MSG_RESULT(yes)
  if test "$WITH_PGSQL" = "yes"; then
    AC_PATH_PROG(PGSQL_CONFIG, pg_config)
  else
    PGSQL_CONFIG=$WITH_PGSQL
  fi

  if test "$PGSQL_CONFIG" = ""; then
    AC_MSG_ERROR(pg_config is not found)
  fi
  if test \! -x $PGSQL_CONFIG; then
    AC_MSG_ERROR(pg_config not exists or not executable, use --with-pgsql=path-to-pg_config)
  fi

  PGSQL_INCLUDE="-I`$PGSQL_CONFIG --includedir`"
  PGSQL_LIBS="-L`$PGSQL_CONFIG --libdir` -lpq"

  AC_MSG_CHECKING(for PgSQL includes at)
  AC_MSG_RESULT($PGSQL_INCLUDE)

  AC_MSG_CHECKING(for PgSQL libraries at)
  AC_MSG_RESULT($PGSQL_LIBS)

  AC_DEFINE([HAVE_PGSQL], [1], [pgsql support])
else
  AC_MSG_RESULT(no)
fi
AM_CONDITIONAL(BUILD_WITH_PGSQL, test ! $WITH_PGSQL = no)

AC_SUBST(PGSQL_LIBS)
AC_SUBST(PGSQL_INCLUDE)


dnl Checks for libdbi library
DBI_INCLUDE=""
DBI_LIBS=""

AC_MSG_CHECKING(for LibDBI support)
AC_ARG_WITH(dbi,
    AC_HELP_STRING([--with-dbi@<:@=PATH@:>@],[Include DBI support in PATH/include/dbi.h and PATH/lib]),
    [WITH_DBI=$withval],[WITH_DBI=no])

if test "$WITH_DBI" != "no"; then
       AC_MSG_RESULT(yes)
       if test "$WITH_DBI" != "yes"; then
               DBI_CFLAGS="-I$WITH_LIBDBI/include"
               DBI_LIBS="-L$WITH_LIBDBI/lib -ldbi"
       else
               AC_CHECK_HEADERS([dbi/dbi.h],[
                       AC_CHECK_LIB([dbi], [dbi_version], [
                                       DBI_CFLAGS=""
                                       DBI_LIBS="-ldbi"
                               ],[
                               AC_MSG_ERROR([LibDBI not found])
                               ]
                       )],[
                               AC_MSG_ERROR([LibDBI not found])
                       ]
               )
       fi

       AC_DEFINE([HAVE_DBI], [1], [LibDBI support])
else
       AC_MSG_RESULT(no)
fi
AM_CONDITIONAL(BUILD_WITH_DBI, test ! $WITH_DBI = no)

AC_SUBST(DBI_LIBS)
AC_SUBST(DBI_CFLAGS)


dnl Check for LDAP
AC_MSG_CHECKING(for LDAP support)
AC_ARG_WITH(ldap, AC_HELP_STRING([--with-ldap],[enable LDAP support]),
[WITH_LDAP=$withval], [WITH_LDAP=no])
AC_MSG_RESULT([$withval])
if test "$WITH_LDAP" != "no"; then
 AC_CHECK_LIB(ldap, ldap_bind, [
  AC_CHECK_HEADERS([ldap.h],[
    LDAP_LIB=-lldap
    AC_DEFINE([HAVE_LIBLDAP], [1], [libldap])
    AC_DEFINE([HAVE_LDAP_H], [1])
    AC_DEFINE([LDAP_DEPRECATED], [1], [Using deprecated ldap api])
  ])
 ])
 AC_SUBST(LDAP_LIB)
 AC_CHECK_LIB(lber, ber_printf, [
  AC_CHECK_HEADERS([lber.h],[
    LBER_LIB=-llber
    AC_DEFINE([HAVE_LIBLBER], [1], [liblber])
    AC_DEFINE([HAVE_LBER_H], [1])
  ])
 ])
 AC_SUBST(LBER_LIB)
fi
AM_CONDITIONAL(BUILD_WITH_LDAP, test ! $WITH_LDAP = no)

dnl Check for xattr
AC_MSG_CHECKING(for extended attributes support)
AC_ARG_WITH(attr, AC_HELP_STRING([--with-attr],[enable extended attribute support]),
[WITH_ATTR=$withval],[WITH_ATTR=no])
AC_MSG_RESULT($withval)
if test "$WITH_ATTR" != "no"; then
  # libattr (linux only?)
  AC_CHECK_LIB(attr, attr_get, [
    AC_CHECK_HEADERS([attr/attributes.h],[
      ATTR_LIB=-lattr
      AC_DEFINE([HAVE_XATTR], [1], [libattr])
      AC_DEFINE([HAVE_ATTR_ATTRIBUTES_H], [1])
    ])
  ])
  AC_SUBST(ATTR_LIB)

  # (Free)BSD extattr
  AC_CHECK_FUNC([extattr_get_file], [
    AC_CHECK_HEADERS([sys/extattr.h],[
      AC_DEFINE([HAVE_EXTATTR], [1], [BSD extended attributes])
      AC_DEFINE([HAVE_SYS_EXTATTR_H], [1])
    ])
  ])
fi

dnl openssl on solaris needs -lsocket -lnsl
AC_SEARCH_LIBS(socket,socket)
AC_SEARCH_LIBS(gethostbyname,nsl socket)

dnl On Haiku accept() and friends are in libnetwork
AC_SEARCH_LIBS(accept,network)

dnl clock_gettime() needs -lrt with glibc < 2.17, and possibly other platforms
AC_SEARCH_LIBS([clock_gettime],[rt])

save_LIBS=$LIBS
AC_SEARCH_LIBS(dlopen,dl,[
  AC_CHECK_HEADERS([dlfcn.h],[
    if test "$ac_cv_search_dlopen" != no; then
      test "$ac_cv_search_dlopen" = "none required" || DL_LIB="$ac_cv_search_dlopen"
    fi

    AC_DEFINE([HAVE_LIBDL], [1], [libdl])
    AC_DEFINE([HAVE_DLFCN_H], [1])
  ])
])
LIBS=$save_LIBS
AC_SUBST(DL_LIB)

dnl Check for valgrind
AC_MSG_CHECKING(for valgrind)
AC_ARG_WITH(valgrind, AC_HELP_STRING([--with-valgrind],[enable internal support for valgrind]),
[WITH_VALGRIND=$withval],[WITH_VALGRIND=no])
AC_MSG_RESULT([$WITH_VALGRIND])
if test "$WITH_VALGRIND" != "no"; then
 AC_CHECK_HEADERS([valgrind/valgrind.h])
fi

dnl Checking for libunwind
AC_MSG_CHECKING(for libunwind)
AC_ARG_WITH(libunwind,
    AC_HELP_STRING([--with-libunwind],[Include libunwind support for backtraces on assert failures]),
    [WITH_LIBUNWIND=$withval],[WITH_LIBUNWIND=no])

if test "$WITH_LIBUNWIND" != "no"; then
  PKG_CHECK_MODULES(LIBUNWIND, libunwind)
  AC_DEFINE(HAVE_LIBUNWIND, 1, [Have libunwind support])
fi
AC_MSG_RESULT([$WITH_LIBUNWIND])

dnl Checking for kerberos5
AC_MSG_CHECKING(for kerberos5)
AC_ARG_WITH(krb5,
	AC_HELP_STRING([--with-krb5@<:@=DIR@:>@],[Use Kerberos 5]),
	[WITH_KRB5=$withval],[WITH_KRB5=no])
if test "$WITH_KRB5" != "no"; then
	use_krb5=yes
	if test "x$WITH_KRB5" != "xyes"; then
		CPPFLAGS="$CPPFLAGS -I$WITH_KRB5/include"
		LDFLAGS="$LDFLAGS -L$WITH_KRB5/lib"
	fi
else
	use_krb5=no
fi
AC_MSG_RESULT([$use_krb5])
AM_CONDITIONAL(BUILD_WITH_KRB5, test ! $WITH_KRB5 = no)

AC_ARG_WITH(krb5-includes,
	AC_HELP_STRING([--with-krb5-includes=DIR],[Kerberos includes]),
	[ use_krb5=yes CPPFLAGS="$CPPFLAGS -I$withval" ]
)

AC_ARG_WITH(krb5-libs,
	AC_HELP_STRING([--with-krb5-libs=DIR],[Kerberos libraries]),
	[ use_krb5=yes LDFLAGS="$LDFLAGS -L$withval" ]
)

if test "x$use_krb5" = "xyes"; then
	AC_CHECK_LIB(gssapi_krb5, gss_acquire_cred, [
		AC_CHECK_HEADERS([gssapi/gssapi_krb5.h],[
			KRB5_LIB="-lkrb5 -lgssapi_krb5"
			AC_DEFINE(HAVE_KRB5, [1], [libgssapi_krb5])
		])
	])
	if test "x$KRB5_LIB" = x; then
		AC_MSG_ERROR([gssapi_krb5 headers and/or libs where not found, install them or build with --without-krb5])
	fi
	case $host_os in
		*darwin*|*cygwin* ) KRB5_LIB="$KRB5_LIB -lcom_err";;
	        * ) ;;
	esac
fi
AC_SUBST(KRB5_LIB)

dnl Check for openssl
AC_MSG_CHECKING(for OpenSSL)
AC_ARG_WITH(openssl,
    AC_HELP_STRING([--with-openssl@<:@=DIR@:>@],[Include openssl support (default no)]),
    [WITH_OPENSSL=$withval],[WITH_OPENSSL=no])

if test "$WITH_OPENSSL" != "no"; then
    use_openssl=yes
    if test "$WITH_OPENSSL" != "yes"; then
	CPPFLAGS="$CPPFLAGS -I$WITH_OPENSSL/include"
	LDFLAGS="$LDFLAGS -L$WITH_OPENSSL/lib"
    fi
else
    use_openssl=no
fi
AC_MSG_RESULT([$use_openssl])
AM_CONDITIONAL(BUILD_WITH_OPENSSL, test ! $WITH_OPENSSL = no)

AC_ARG_WITH(openssl-includes,
    AC_HELP_STRING([--with-openssl-includes=DIR],[OpenSSL includes]),
    [ use_openssl=yes CPPFLAGS="$CPPFLAGS -I$withval" ]
)

AC_ARG_WITH(openssl-libs,
    AC_HELP_STRING([--with-openssl-libs=DIR],[OpenSSL libraries]),
    [ use_openssl=yes LDFLAGS="$LDFLAGS -L$withval" ]
)

if test "x$use_openssl" = "xyes"; then
    if test "x$use_krb5" = "xyes"; then
        AC_DEFINE([USE_OPENSSL_KERBEROS], [1], [with kerberos])
    fi

    AC_CHECK_HEADERS([openssl/ssl.h])
    OLDLIBS="$LIBS"
    AC_CHECK_LIB(crypto, BIO_f_base64, [
      AC_CHECK_LIB(ssl, SSL_new, [ SSL_LIB="-lssl -lcrypto"
				 CRYPTO_LIB="-lcrypto"
				 AC_DEFINE(HAVE_LIBSSL, [], [Have libssl]) ], [], [ -lcrypto "$DL_LIB" ])
    ], [], [])
    LIBS="$OLDLIBS"
    AC_SUBST(SSL_LIB)
    AC_SUBST(CRYPTO_LIB)
fi

AC_MSG_CHECKING(for perl regular expressions support)
AC_ARG_WITH(pcre, AC_HELP_STRING([--with-pcre],[Enable pcre support (default yes)]),
    [WITH_PCRE=$withval],[WITH_PCRE=yes])
AC_MSG_RESULT([$WITH_PCRE])

if test "$WITH_PCRE" != "no"; then
		if test "$WITH_PCRE" != "yes"; then
			PCRE_LIB="-L$WITH_PCRE/lib -lpcre"
			CPPFLAGS="$CPPFLAGS -I$WITH_PCRE/include"
		else
			AC_PATH_PROG(PCRECONFIG, pcre-config)
			if test x"$PCRECONFIG" != x; then
				PCRE_LIB=`$PCRECONFIG --libs`
				CPPFLAGS="$CPPFLAGS `$PCRECONFIG --cflags`"
			fi
		fi

  if test x"$PCRE_LIB" != x; then
    AC_DEFINE([HAVE_LIBPCRE], [1], [libpcre])
    AC_DEFINE([HAVE_PCRE_H], [1], [pcre.h])
    AC_SUBST(PCRE_LIB)
  else
    AC_MSG_ERROR([pcre-config not found, install the pcre-devel package or build with --without-pcre])
  fi
fi

AC_MSG_CHECKING(for zlib support)
AC_ARG_WITH(zlib, AC_HELP_STRING([--with-zlib],[Enable zlib support for mod_compress]),
    [WITH_ZLIB=$withval],[WITH_ZLIB=yes])
AC_MSG_RESULT([$WITH_ZLIB])

if test "$WITH_ZLIB" != "no"; then
		if test "$WITH_ZLIB" != "yes"; then
			Z_LIB="-L$WITH_ZLIB -lz"
			CPPFLAGS="$CPPFLAGS -I$WITH_ZLIB"
		else
			AC_CHECK_LIB(z, deflate, [
			  AC_CHECK_HEADERS([zlib.h],[Z_LIB=-lz])
			])
		fi

  if test x"$Z_LIB" != x; then
    AC_DEFINE([HAVE_LIBZ], [1], [libz])
    AC_DEFINE([HAVE_ZLIB_H], [1])
    AC_SUBST(Z_LIB)
  else
    AC_MSG_ERROR([zlib-headers and/or libs were not found, install them or build with --without-zlib])
  fi
fi

AC_MSG_CHECKING(for bzip2 support)
AC_ARG_WITH(bzip2, AC_HELP_STRING([--with-bzip2],[Enable bzip2 support for mod_compress]),
    [WITH_BZIP2=$withval],[WITH_BZIP2=yes])
AC_MSG_RESULT([$WITH_BZIP2])

if test "$WITH_BZIP2" != "no"; then
		if test "$WITH_BZIP2" != "yes"; then
			BZ_LIB="-L$WITH_BZIP2 -lbz2"
			CPPFLAGS="$CPPFLAGS -I$WITH_BZIP2"
		else
			AC_CHECK_LIB(bz2, BZ2_bzCompress, [
			  AC_CHECK_HEADERS([bzlib.h],[BZ_LIB=-lbz2])
			])
		fi

  if test x"$BZ_LIB" != x; then
    AC_DEFINE([HAVE_LIBBZ2], [1], [libbz2])
    AC_DEFINE([HAVE_BZLIB_H], [1])
    AC_SUBST(BZ_LIB)
  else
    AC_MSG_ERROR([bzip2-headers and/or libs were not found, install them or build with --without-bzip2])
  fi
fi

dnl Check for gamin
AC_MSG_CHECKING(for FAM)
AC_ARG_WITH(fam, AC_HELP_STRING([--with-fam],[fam/gamin for reducing number of stat() calls]),
[WITH_FAM=$withval],[WITH_FAM=no])
AC_MSG_RESULT([$WITH_FAM])

if test "$WITH_FAM" != "no"; then
		if test "$WITH_FAM" != "yes"; then
			FAM_LIBS="-L$WITH_FAM -lfam"
			CPPFLAGS="$CPPFLAGS -I$WITH_FAM"
		else
			AC_CHECK_LIB(fam, FAMOpen2, [
			  AC_CHECK_HEADERS([fam.h],[FAM_LIBS=-lfam])
			])
			if test "x$FAM_LIBS" = x; then
			  PKG_CHECK_MODULES(FAM, gamin >= 0.1.0)
			fi
		fi

  if test x"$FAM_LIBS" != x; then
    OLD_LIBS=$LIBS
    LIBS=$FAM_LIBS
    AC_CHECK_FUNCS([FAMNoExists])
    LIBS=$OLD_LIBS

    AC_DEFINE([HAVE_LIBFAM], [1], [libfam])
    AC_DEFINE([HAVE_FAM_H], [1], [fam.h])
    AC_SUBST(FAM_LIBS)
  else
     AC_MSG_ERROR([fam/gamin-headers and/or libs were not found, install them or build with --without-fam])
  fi
fi

AC_MSG_CHECKING(for properties in mod_webdav)
AC_ARG_WITH(webdav-props, AC_HELP_STRING([--with-webdav-props],[properties in mod_webdav]),
[WITH_WEBDAV_PROPS=$withval],[WITH_WEBDAV_PROPS=no])
AC_MSG_RESULT([$WITH_WEBDAV_PROPS])

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

  AC_MSG_CHECKING(for libxml2)
  AC_ARG_WITH(libxml, AC_HELP_STRING([--with-libxml],[libxml2 for properties in mod_webdav]),
  [WITH_LIBXML=$withval],[WITH_LIBXML=yes])
  AC_MSG_RESULT([$WITH_LIBXML])

  if test "$WITH_LIBXML" != "no"; then
		if test "$WITH_LIBXML" != "yes"; then
			XML_LIBS="-L$WITH_LIBXML/.libs -lxml2"
			XML_CFLAGS="-I$WITH_LIBXML/include"
		else
			PKG_CHECK_MODULES(XML, libxml-2.0)
		fi

    if test x"$XML_LIBS" != x; then
      AC_DEFINE([HAVE_LIBXML2], [1], [libxml2])
      AC_DEFINE([HAVE_LIBXML_H], [1], [libxml.h])
      AC_SUBST(XML_LIBS)
      AC_SUBST(XML_CFLAGS)
    else
      AC_MSG_ERROR([libxml2-headers and/or libs were not found, install them or build with --without-webdav-props])
    fi
  fi

  AC_MSG_CHECKING(for sqlite)
  AC_ARG_WITH(sqlite, AC_HELP_STRING([--with-sqlite],[sqlite for properties in mod_webdav]),
  [WITH_SQLITE=$withval],[WITH_SQLITE=yes])
  AC_MSG_RESULT([$WITH_SQLITE])

  if test "$WITH_SQLITE" != "no"; then
		if test "$WITH_SQLITE" != "yes"; then
			SQLITE_LIBS="-L$WITH_SQLITE/.libs -lsqlite3"
			SQLITE_CFLAGS="-I$WITH_SQLITE"
		else
			PKG_CHECK_MODULES(SQLITE, sqlite3)
		fi

    if test x"$SQLITE_LIBS" != x; then
      AC_DEFINE([HAVE_SQLITE3], [1], [libsqlite3])
      AC_DEFINE([HAVE_SQLITE3_H], [1], [sqlite3.h])
      AC_SUBST(SQLITE_LIBS)
      AC_SUBST(SQLITE_CFLAGS)
    else
      AC_MSG_ERROR([sqlite-headers and/or libs were not found, install them or build with --without-webdav-props])
    fi
  fi

  AC_MSG_CHECKING(for locks in mod_webdav)
  AC_ARG_WITH(webdav-locks, AC_HELP_STRING([--with-webdav-locks],[locks in mod_webdav]),
  [WITH_WEBDAV_LOCKS=$withval],[WITH_WEBDAV_LOCKS=no])
  AC_MSG_RESULT([$WITH_WEBDAV_LOCKS])

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

    AC_MSG_CHECKING(for libuuid)
    AC_ARG_WITH(uuid, AC_HELP_STRING([--with-uuid],[uuid for locks in mod_webdav]),
    [WITH_UUID=$withval],[WITH_UUID=yes])
    AC_MSG_RESULT([$WITH_UUID])

    if test "$WITH_UUID" != "no"; then
		if test "$WITH_UUID" != "yes"; then
			UUID_LIBS="-L$WITH_UUID -luuid"
			CPPFLAGS="$CPPFLAGS -I$WITH_UUID"
		else
			AC_CHECK_LIB(uuid, uuid_unparse, [
			  AC_CHECK_HEADERS([uuid/uuid.h],[UUID_LIBS=-luuid])
			])
		fi

      if test x"$UUID_LIBS" != x; then
        AC_DEFINE([HAVE_UUID], [1], [libuuid])
        AC_DEFINE([HAVE_UUID_H], [1], [uuid/uuid.h is available])
        AC_SUBST(UUID_LIBS)
      else
        AC_MSG_ERROR([uuid-headers and/or libs were not found, install them or build with --without-webdav-locks])
      fi
    fi

  fi

fi

dnl Check for gdbm
AC_MSG_CHECKING(for gdbm)
AC_ARG_WITH(gdbm, AC_HELP_STRING([--with-gdbm],[gdbm storage for mod_trigger_b4_dl]),
[WITH_GDBM=$withval],[WITH_GDBM=no])
AC_MSG_RESULT([$WITH_GDBM])

if test "$WITH_GDBM" != "no"; then
		if test "$WITH_GDBM" != "yes"; then
			GDBM_LIB="-L$WITH_GDBM -lgdbm"
			CPPFLAGS="$CPPFLAGS -I$WITH_GDBM"
		else
			AC_CHECK_LIB(gdbm, gdbm_open, [
			  AC_CHECK_HEADERS([gdbm.h],[GDBM_LIB=-lgdbm])
			])
		fi

  if test x"$GDBM_LIB" != x; then
    AC_DEFINE([HAVE_GDBM], [1], [libgdbm])
    AC_DEFINE([HAVE_GDBM_H], [1])
    AC_SUBST(GDBM_LIB)
  else
    AC_MSG_ERROR([gdbm headers and/or libs were not found, install them or build with --without-gdbm])
  fi
fi
AM_CONDITIONAL(BUILD_WITH_GDBM, test ! $WITH_GDBM = no)

dnl Check for GeoIP
AC_MSG_CHECKING(for GeoIP)
AC_ARG_WITH(geoip, AC_HELP_STRING([--with-geoip],[IP-based geolocation lookup]),
[WITH_GEOIP=$withval],[WITH_GEOIP=no])
AC_MSG_RESULT([$WITH_GEOIP])

if test "$WITH_GEOIP" != "no"; then
		if test "$WITH_GEOIP" != "yes"; then
			GEOIP_LIB="-L$WITH_GEOIP -lGeoIP"
			CPPFLAGS="$CPPFLAGS -I$WITH_GEOIP"
		else
			AC_CHECK_LIB(GeoIP, GeoIP_country_name_by_addr, [
			  AC_CHECK_HEADERS([GeoIP.h],[GEOIP_LIB=-lGeoIP])
			])
		fi

  if test x"$GEOIP_LIB" != x; then
    AC_DEFINE([HAVE_GEOIP], [1], [libGeoIP])
    AC_DEFINE([HAVE_GEOIP_H], [1])
    AC_SUBST(GEOIP_LIB)
  else
    AC_MSG_ERROR([GeoIP headers and/or libs were not found, install them or build with --without-geoip])
  fi
fi
AM_CONDITIONAL(BUILD_WITH_GEOIP, test ! $WITH_GEOIP = no)

dnl Check for memcached
AC_MSG_CHECKING(for memcached)
AC_ARG_WITH(memcached, AC_HELP_STRING([--with-memcached],[memcached storage for mod_trigger_b4_dl]),
[WITH_MEMCACHED=$withval],[WITH_MEMCACHED=no])
AC_MSG_RESULT([$WITH_MEMCACHED])

if test "$WITH_MEMCACHED" != "no"; then
		if test "$WITH_MEMCACHED" != "yes"; then
			MEMCACHED_LIB="-L$WITH_MEMCACHED -lMEMCACHED"
			CPPFLAGS="$CPPFLAGS -I$WITH_MEMCACHED"
		else
			AC_CHECK_LIB(memcached, memcached, [
			  AC_CHECK_HEADERS([libmemcached/memcached.h],[
			    MEMCACHED_LIB=-lmemcached
			  ])
			])
		fi

  if test x"$MEMCACHED_LIB" != x; then
    AC_DEFINE([USE_MEMCACHED], [1], [libmemcached])
    AC_SUBST(MEMCACHED_LIB)
  else
    AC_MSG_ERROR([memcached headers and/or libs were not found, install them or build with --without-memcached])
  fi
fi
AM_CONDITIONAL(BUILD_WITH_MEMCACHED, test ! $WITH_MEMCACHED = no)

AM_CONDITIONAL(BUILD_MOD_TRIGGER_B4_DL, test ! $WITH_MEMCACHED = no || test ! $WITH_GDBM = no)

dnl Check for lua
AC_MSG_CHECKING(if lua-support is requested)
AC_ARG_WITH(lua, AC_HELP_STRING([--with-lua],[lua engine for mod_cml]),
[WITH_LUA=$withval],[WITH_LUA=no])

AC_MSG_RESULT($WITH_LUA)
if test "$WITH_LUA" != "no"; then
  found_lua=0
  if test "$WITH_LUA" != "yes"; then
    PKG_CHECK_MODULES(LUA, $WITH_LUA >= 5.1, [
      found_lua=1
    ],[
      AC_MSG_NOTICE([Couldn't find requested lua pkg-config module $WITH_LUA])
    ])
    if test "$found_lua" = "0"; then
      LUA_LIBS="-L$WITH_LUA -llua"
      LUA_CFLAGS="-I$WITH_LUA"
    fi
  else
    for luaname in lua5.3 lua-5.3 lua5.2 lua-5.2 lua5.1 lua-5.1 lua; do
      if test "$found_lua" = "0"; then
        PKG_CHECK_MODULES(LUA, $luaname >= 5.1, [
          found_lua=1
        ], [
          AC_MSG_NOTICE([Couldn't find $luaname])
        ])
      fi
    done
    if test "$found_lua" = "0"; then
      AC_MSG_ERROR([Couldn't find any lua pkg-config module])
    fi
  fi

  if test x"$LUA_LIBS" != x; then
    AC_DEFINE([HAVE_LUA], [1], [liblua])
    AC_DEFINE([HAVE_LUA_H], [1], [lua.h])
    AC_SUBST(LUA_LIBS)
    AC_SUBST(LUA_CFLAGS)
  else
    AC_MSG_ERROR([lua headers and/or libs were not found, install them or build with --without-lua])
  fi
fi
AM_CONDITIONAL(BUILD_WITH_LUA, test ! $WITH_LUA = no)

dnl search for crypt_r and (fallback) for crypt
save_LIBS=$LIBS
LIBS=
AC_SEARCH_LIBS([crypt_r],[crypt],[
  AC_DEFINE([HAVE_CRYPT_R], [1], [crypt_r])
  AC_CHECK_HEADERS([crypt.h],[
    AC_DEFINE([HAVE_CRYPT_H], [1], [crypt.h])
  ])

  CRYPT_LIB=$LIBS
],[
  AC_SEARCH_LIBS([crypt],[crypt],[
    AC_DEFINE([HAVE_CRYPT], [1], [crypt])
    AC_CHECK_HEADERS([crypt.h],[
      AC_DEFINE([HAVE_CRYPT_H], [1], [crypt.h])
    ])

    CRYPT_LIB=$LIBS
  ])
])
LIBS=$save_LIBS
AC_SUBST([CRYPT_LIB])

save_LIBS=$LIBS
AC_SEARCH_LIBS(sendfilev,sendfile,[
  if test "$ac_cv_search_sendfilev" != no; then
    test "$ac_cv_search_sendfilev" = "none required" || SENDFILE_LIB="$ac_cv_search_sendfilev"
    AC_DEFINE([HAVE_SENDFILEV], [1], [solaris sendfilev])
  fi
])
LIBS=$save_LIBS
AC_SUBST(SENDFILE_LIB)

case $host_os in
	*mingw* ) LIBS="$LIBS -lwsock32";;
        * ) ;;
esac

AC_CHECK_FUNCS([dup2 getcwd inet_ntoa inet_ntop inet_pton issetugid memset mmap munmap strchr \
		  strdup strerror strstr strtol sendfile  getopt socket lstat \
		  gethostbyname poll epoll_ctl getrlimit chroot \
		  getuid select signal pathconf madvise posix_fadvise posix_madvise \
		  writev sigaction sendfile64 send_file kqueue port_create localtime_r gmtime_r \
		  memset_s explicit_bzero clock_gettime pipe2 \
		  arc4random_buf jrand48 srandom getloadavg])
AC_CHECK_HEADERS([sys/random.h],[
  AC_CHECK_FUNC([getentropy], AC_DEFINE([HAVE_GETENTROPY], [1], [getentropy]))
])
AC_CHECK_HEADERS([linux/random.h],[
  AC_CHECK_FUNC([getrandom], AC_DEFINE([HAVE_GETRANDOM], [1], [getrandom]))
])

AC_MSG_CHECKING(if weak symbols are supported)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
		__attribute__((weak)) void __dummy(void *x) { }
		void f(void *x) { __dummy(x); }
	]])],
	[
		AC_MSG_RESULT(yes)
		AC_DEFINE([HAVE_WEAK_SYMBOLS], [1], [weak symbols are supported])
	],[AC_MSG_RESULT(no)])

AC_MSG_CHECKING(for Large File System support)
AC_ARG_ENABLE(lfs,
 AC_HELP_STRING([--enable-lfs],[Turn on Large File System (default)]),
 [case "${enableval}" in
   yes) CPPFLAGS="${CPPFLAGS} -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGE_FILES" ;;
    no) ;;
     *) AC_MSG_ERROR(bad value ${enableval} for --enable-lfs) ;;
  esac],[CPPFLAGS="${CPPFLAGS} -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGE_FILES"
	 enable_lfs=yes])
AC_MSG_RESULT($enableval)

AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(off_t)

if test "x$ac_cv_func_sendfile" = xyes; then
	dnl check if sendfile works
        AC_MSG_CHECKING(if sendfile works)
	if test "x$cross_compiling" = xno; then
	AC_TRY_RUN([
		    #ifdef HAVE_SYS_SENDFILE_H
		    #include <sys/sendfile.h>
		    #endif /* HAVE_SYS_SENDFILE_H */
		    #include <errno.h>
		    int main() {
		      int o = 0;
		      if (-1 == sendfile(-1, 0, &o, 0) && errno == ENOSYS) return -1;
		      return 0;
		    } ],
		    AC_MSG_RESULT(yes),
		    [ AC_MSG_RESULT(no)
		    AC_DEFINE([HAVE_SENDFILE_BROKEN], [1], [broken sendfile]) ] )
	else
	      AC_MSG_RESULT(no, cross-compiling)
	      AC_DEFINE([HAVE_SENDFILE_BROKEN], [1], [broken sendfile])
	fi
fi

dnl Check for IPv6 support

AC_ARG_ENABLE(ipv6,
 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
 [case "${enableval}" in
   yes) ipv6=true ;;
    no) ipv6=false ;;
     *) AC_MSG_ERROR(bad value ${enableval} for --enable-ipv6) ;;
  esac],[ipv6=true])

if test x$ipv6 = xtrue; then
  AC_CACHE_CHECK([for IPv6 support], ac_cv_ipv6_support,
  [AC_TRY_LINK([ #include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>], [struct sockaddr_in6 s; struct in6_addr t=in6addr_any; int i=AF_INET6; s; t.s6_addr[0] = 0; ],
  [ac_cv_ipv6_support=yes], [ac_cv_ipv6_support=no])])

  if test "$ac_cv_ipv6_support" = yes; then
    AC_DEFINE(HAVE_IPV6,1,[Whether to enable IPv6 support])
  fi
fi

# disable mmap by default; if a mmapped file gets truncated, the process gets a SIGBUS signal
# on reading the truncated area which we can't handle (yet).
# lighttpd may always use mmap with files it owns (created tmp files)
AC_ARG_ENABLE(mmap,
  AC_HELP_STRING([--enable-mmap],[use mmap if available (DANGEROUS, allows local users to trigger SIGBUS crashes)]),
  [case "${enableval}" in
   yes) mmap=true ;;
    no) mmap=false ;;
     *) AC_MSG_ERROR(bad value ${enableval} for --enable-mmap) ;;
  esac],[mmap=false])

if test x$mmap = xtrue; then
  AC_DEFINE(ENABLE_MMAP, [1], [Use mmap if available])
fi

dnl check for fastcgi lib, for the tests only
fastcgi_found=no
AC_CHECK_LIB(fcgi, FCGI_Accept, [
 AC_CHECK_HEADERS([fastcgi.h fastcgi/fastcgi.h],[
   fastcgi_found=yes
 ])
])

AM_CONDITIONAL(CHECK_WITH_FASTCGI, test "x$fastcgi_found" = xyes)


dnl check for extra compiler options (warning options)
if test "${GCC}" = "yes"; then
  TRY_CFLAGS([-Wall -W -Wshadow -pedantic])
fi

AC_ARG_ENABLE(extra-warnings,
 AC_HELP_STRING([--enable-extra-warnings],[enable extra warnings (gcc specific)]),
 [case "${enableval}" in
 error) extrawarnings=error ;;
   yes) extrawarnings=true ;;
    no) extrawarnings=false ;;
     *) AC_MSG_ERROR(bad value ${enableval} for --enable-extra-warnings) ;;
  esac],[extrawarnings=false])

if test x$extrawarnings = xtrue || test x$extrawarnings = xerror; then
  TRY_CFLAGS([-g -O2 -g2 -Wall -Wmissing-declarations -Wdeclaration-after-statement -Wcast-align -Wsign-compare -Wnested-externs -Wpointer-arith -D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security])
  TRY_LDFLAGS([-Wl,--as-needed])
  if test x$extrawarnings = xerror; then
    AS_VAR_APPEND([CFLAGS], [" -Werror"])
    AS_VAR_APPEND([LDFLAGS], [" -Wl,--fatal-warnings"])
  fi
fi

dnl build version-id
LIGHTTPD_VERSION_ID=`echo $PACKAGE_VERSION | $AWK -F '.' '{print "(" $1 " << 16 | " $2 " << 8 | " $3 ")"}'`
AC_DEFINE_UNQUOTED([LIGHTTPD_VERSION_ID], [$LIGHTTPD_VERSION_ID], [lighttpd-version-id])

AC_CONFIG_FILES([Makefile src/Makefile
		 doc/config/conf.d/Makefile \
		 doc/config/vhosts.d/Makefile \
		 doc/config/Makefile \
		 doc/scripts/Makefile \
		 doc/systemd/Makefile \
		 doc/outdated/Makefile \
		 doc/Makefile \
		 tests/Makefile \
		 tests/docroot/Makefile \
		 tests/docroot/123/Makefile \
		 tests/docroot/www/Makefile \
		 tests/docroot/www/go/Makefile \
		 tests/docroot/www/indexfile/Makefile \
		 tests/docroot/www/expire/Makefile \
		 distribute.sh])
AC_OUTPUT


do_build="mod_cgi mod_fastcgi mod_extforward mod_proxy mod_evhost mod_simple_vhost mod_access mod_alias mod_setenv mod_usertrack mod_auth mod_authn_file mod_status mod_accesslog"
do_build="$do_build mod_rrdtool mod_secdownload mod_expire mod_compress mod_dirlisting mod_indexfile mod_userdir mod_webdav mod_staticfile mod_scgi mod_flv_streaming mod_ssi mod_deflate"
do_build="$do_build mod_vhostdb mod_wstunnel"

plugins="mod_rewrite mod_redirect"
features="regex-conditionals"
if test ! "x$PCRE_LIB" = x; then
	do_build="$do_build $plugins"
	enable_feature="$features"
else
	no_build="$no_build $plugins"
	disable_feature="$features"
fi

plugins="mod_trigger_b4_dl"
if test ! "x$PCRE_LIB" = x; then
if test ! "x$WITH_MEMCACHED" = xno || test ! "x$WITH_GDBM" = xno; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi
fi

plugins="mod_authn_mysql mod_mysql_vhost mod_vhostdb_mysql"
if test ! "x$MYSQL_LIBS" = x; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi

plugins="mod_vhostdb_pgsql"
if test ! "x$PGSQL_LIBS" = x; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi

plugins="mod_vhostdb_dbi"
if test ! "x$DBI_LIBS" = x; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi

plugins="mod_cml mod_magnet"
if test ! "x$LUA_LIBS" = x; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi

plugins="mod_geoip"
if test ! "x$GEOIP_LIB" = x; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi

features="storage-gdbm"
if test ! "x$GDBM_LIB" = x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

features="storage-memcached"
if test ! "x$MEMCACHED_LIB" = x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

features="compress-gzip compress-deflate"
if test ! "x$Z_LIB" = x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

features="compress-bzip2"
if test ! "x$BZ_LIB" = x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

plugins="mod_authn_gssapi"
if test ! "x$KRB5_LIB" = x; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi

plugins="mod_authn_ldap mod_vhostdb_ldap"
if test ! "x$LDAP_LIB" = x; then
	do_build="$do_build $plugins"
else
	no_build="$no_build $plugins"
fi

features="network-openssl"
if test ! "x$SSL_LIB" = x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

dnl no crypt call
features="auth-crypt"
if test "$ac_cv_search_crypt" = no; then
	disable_feature="$disable_feature $features"
else
	enable_feature="$enable_feature $features"
fi

features="network-ipv6"
if test "$ac_cv_ipv6_support" = yes; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

features="large-files"
if test "$enable_lfs" = yes; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

features="stat-cache-fam"
if test ! "x$FAM_LIBS" = x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

features="webdav-properties"
if test "x$XML_LIBS" \!= x -a "x$SQLITE_LIBS" \!= x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi

features="webdav-locks"
if test "x$UUID_LIBS" \!= x; then
	enable_feature="$enable_feature $features"
else
	disable_feature="$disable_feature $features"
fi


dnl output

$ECHO
$ECHO "Plugins:"
$ECHO

$ECHO "enabled: "
for p in $do_build; do
	$ECHO "  $p"
done | sort

$ECHO "disabled: "
for p in $no_build; do
	$ECHO "  $p"
done | sort

$ECHO
$ECHO "Features:"
$ECHO

$ECHO "enabled: "
for p in $enable_feature; do
	$ECHO "  $p"
done | sort

$ECHO "disabled: "
for p in $disable_feature; do
	$ECHO "  $p"
done | sort

$ECHO