configure.ac

dnl Process this file with autoconf to produce a configure script.

dnl When updating the version, remember to update the following files
dnl appropriately:
dnl
dnl include/win32/setup.h
dnl src/win32/unrealinst.iss
dnl docs/unreal32docs*.html
dnl Unreal.nfo
dnl .CHANGES.NEW
dnl src/version.c.SH

AC_INIT([unrealircd], [3.4-alpha1], [http://bugs.unrealircd.org/], [], [http://unrealircd.org/])
AC_CONFIG_SRCDIR([src/ircd.c])
AC_CONFIG_HEADER([include/setup.h])
AC_CONFIG_AUX_DIR([autoconf])
AC_CONFIG_MACRO_DIR([autoconf/m4])

if test "x$enable_dynamic_linking" = "x"; then
	echo "Please use ./Config instead of ./configure"
	exit 1
fi

dnl Calculate the versions. Perhaps the use of expr is a little too extravagant
# Generation version number (e.g.: 3 for Unreal3*)
UNREAL_VERSION_GENERATION=["3"]
AC_DEFINE_UNQUOTED([UNREAL_VERSION_GENERATION], [$UNREAL_VERSION_GENERATION], [Generation version number (e.g.: 3 for Unreal3*)])

# Major version number (e.g.: 2 for Unreal3.2*)
UNREAL_VERSION_MAJOR=["4"]
AC_DEFINE_UNQUOTED([UNREAL_VERSION_MAJOR], [$UNREAL_VERSION_MAJOR], [Major version number (e.g.: 2 for Unreal3.2*)])

# Minor version number (e.g.: 1 for Unreal3.2.1)
UNREAL_VERSION_MINOR=["0"]
AC_DEFINE_UNQUOTED([UNREAL_VERSION_MINOR], [$UNREAL_VERSION_MINOR], [Minor version number (e.g.: 1 for Unreal3.2.1)])

# The version suffix such as a beta marker or release candidate
# marker. (e.g.: -rc2 for unrealircd-3.2.9-rc2). This macro is a
# string instead of an integer because it contains arbitrary data.
UNREAL_VERSION_SUFFIX=["`expr $PACKAGE_VERSION : '[0-9]*\.[0-9]*\(.*\)'`"]
AC_DEFINE_UNQUOTED([UNREAL_VERSION_SUFFIX], ["$UNREAL_VERSION_SUFFIX"], [Version suffix such as a beta marker or release candidate marker. (e.g.: -rc2 for unrealircd-3.2.9-rc2)])

AC_PROG_CC
if test "$ac_cv_prog_gcc" = "yes"; then
CFLAGS="$CFLAGS -funsigned-char"
AC_CACHE_CHECK(if gcc has a working -pipe, ac_cv_pipe, [
	save_cflags="$CFLAGS"
	CFLAGS="$CFLAGS -pipe"
	AC_TRY_COMPILE(,, ac_cv_pipe="yes", ac_cv_pipe="no")
	CFLAGS="$save_cflags"
])
if test "$ac_cv_pipe" = "yes"; then
CFLAGS="-pipe $CFLAGS"
fi
fi

dnl (the gcc flag detection trick is taken from xemacs/Vin Shelton)

dnl UnrealIRCd might not be strict-aliasing safe at this time
case "`$CC -v --help 2>&1`" in
	*-fstrict-aliasing* ) CFLAGS="$CFLAGS -fno-strict-aliasing" ;;
esac

dnl Pointer signedness warnings are really a pain and 99.9% of the time
dnl they are of absolutely no use whatsoever. IMO the person who decided
dnl to enable this without -Wall should be shot on sight.
case "`$CC -v --help 2>&1`" in
	*-Wpointer-sign* ) CFLAGS="$CFLAGS -Wno-pointer-sign" ;;
esac

AC_PATH_PROG(RM,rm)
AC_PATH_PROG(CP,cp)
AC_PATH_PROG(TOUCH,touch)
AC_PATH_PROG(OPENSSLPATH,openssl)
AC_PATH_PROG(INSTALL,install)
AC_CHECK_PROG(MAKER, gmake, gmake, make)
AC_PATH_PROG(GMAKE,gmake)
AC_PATH_PROG(GUNZIP, gunzip)
AC_PATH_PROG(PKGCONFIG, pkg-config)

dnl Checks for libraries.
AC_CHECK_LIB(descrypt, crypt,
	[AC_DEFINE([HAVE_CRYPT], [], [Define if you have crypt])
		IRCDLIBS="$IRCDLIBS-ldescrypt "
		MKPASSWDLIBS="-ldescrypt"],
	[AC_CHECK_LIB(crypt, crypt,
		[AC_DEFINE([HAVE_CRYPT], [], [Define if you have crypt])
			IRCDLIBS="$IRCDLIBS-lcrypt "
			MKPASSWDLIBS="-lcrypt"])])
AC_CHECK_LIB(socket, socket,
	[IRCDLIBS="$IRCDLIBS-lsocket "
		SOCKLIB="-lsocket"])
AC_CHECK_LIB(nsl, inet_ntoa,
	[IRCDLIBS="$IRCDLIBS-lnsl "
		INETLIB="-lnsl"])
AC_CHECK_LIB(crypto, RAND_egd,
		AC_DEFINE(HAVE_RAND_EGD, 1, [Define if the libcrypto has RAND_egd]))

AC_SUBST(IRCDLIBS)
AC_SUBST(MKPASSWDLIBS)

dnl module checking based on Hyb7's module checking code
AC_DEFUN([AC_ENABLE_DYN],
[
AC_CHECK_FUNC(dlopen,, [AC_CHECK_LIB(dl, dlopen,IRCDLIBS="$IRCDLIBS -ldl",
[
AC_MSG_WARN(Dynamic linking is not enabled because dlopen was not found) 
AC_DEFINE(STATIC_LINKING)
])])

hold_cflags=$CFLAGS
CFLAGS="$CFLAGS -Wl,-export-dynamic"
AC_CACHE_CHECK(if we need the -export-dynamic flag, ac_cv_export_dynamic, [
AC_TRY_LINK(, [int i];, ac_cv_export_dynamic=yes, ac_cv_export_dynamic=no)])
if test "$ac_cv_export_dynamic" = "no"; then
CFLAGS=$hold_cflags
fi

AC_CACHE_CHECK(for compiler option to produce PIC,ac_cv_pic,[
if test "$ac_cv_prog_gcc" = "yes"; then
	ac_cv_pic="-fPIC -DPIC -shared"
	case `uname -s` in
		Darwin*[)]
		ac_cv_pic="-std=gnu89 -bundle -flat_namespace -undefined suppress"
		;;
		HP-UX*[)]
		ac_cv_pic="-fPIC"
		;;
	esac
else
case `uname -s` in
	SunOS*[)]
	ac_cv_pic="-KPIC -DPIC -G"
	;;
esac
fi
])
AC_CACHE_CHECK(if your system prepends an underscore on symbols,ac_cv_underscore,[
cat >uscore.c << __EOF__
int main() {
	return 0;
}
__EOF__
$CC -o uscore $CFLAGS uscore.c 1>&5
if test -z "`strings -a uscore |grep '^_main$'`"; then
ac_cv_underscore=no
else
ac_cv_underscore=yes
fi
rm -f uscore uscore.c
])
dnl libtool has built-in tests that determine proper underscorage
if test "$ac_cv_underscore" = "yes"; then
	AC_DEFINE([UNDERSCORE], [], [Define if your system prepends an underscore to symbols])
fi

MODULEFLAGS=$ac_cv_pic
dnl DYNAMIC_LINKING is not meant to be defined in include/setup.h, it's 
dnl defined in the Makefiles using -D. Having it defined globally will
dnl only cause braindamage and symbol collisions :-D.
dnl AC_DEFINE([DYNAMIC_LINKING], [], [Link dynamically as opposed to statically. (Dynamic linking is the only supported method of linking atm)])
])
AC_DEFUN([AC_ENABLE_INET6],[
	AC_CACHE_CHECK([if your system has IPv6 support], [ac_cv_ip6], [
		save_libs="$LIBS"
		LIBS="$LIBS $SOCKLIB"
		AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>
int main() {
if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
exit(1);
exit(0);
}
			],
			[ac_cv_ip6=yes],
			[ac_cv_ip6=no])
		])
	if test "$ac_cv_ip6" = "no"; then
		AC_MSG_ERROR([Your system does not support IPv6 so it will not be enabled])
	else
		AC_DEFINE([INET6], [], [Define if you want IPv6 enabled])
		dnl in6addr_any detection code taken from ratbox
		AC_MSG_CHECKING([for struct in6addr_any])
		AC_COMPILE_IFELSE(
			[AC_LANG_PROGRAM(
				[[#define IN_AUTOCONF
				#include <sys/types.h>
				#include <sys/socket.h>
				#include <netinet/in.h>]],
				[[struct in6_addr a = in6addr_any;]]
			)],
			[AC_MSG_RESULT(yes)],
				[
				AC_MSG_RESULT([no])
				AC_DEFINE([NO_IN6ADDR_ANY], [1], [Define to 1 if your system has no in6addr_any.])
				]
			)
	fi
	LIBS="$save_libs"
])

AC_CHECK_HEADER(sys/param.h,
	AC_DEFINE([PARAMH], [], [Define if you have the <sys/param.h> header file.]))
AC_CHECK_HEADER(stdlib.h,
	AC_DEFINE([STDLIBH], [], [Define if you have the <stdlib.h> header file.]))
AC_CHECK_HEADER(stddef.h,
	AC_DEFINE([STDDEFH], [], [Define if you have the <stddef.h> header file.]))
AC_CHECK_HEADER(sys/syslog.h,
	AC_DEFINE([SYSSYSLOGH], [], [Define if you have the <sys/syslog.h> header file.]))
AC_CHECK_HEADER(unistd.h,
	AC_DEFINE([UNISTDH], [], [Define if you have the <unistd.h> header file.]))
AC_CHECK_HEADER(string.h,
	AC_DEFINE([STRINGH], [], [Define if you have the <string.h> header file.]))
AC_CHECK_HEADER(strings.h,
	AC_DEFINE([STRINGSH], [], [Define if you have the <strings.h> header file.]))
AC_CHECK_HEADER(malloc.h,
	AC_DEFINE([MALLOCH], [<malloc.h>], [Define to <malloc.h> you need malloc.h.]))
AC_CHECK_HEADER(sys/rusage.h,
	AC_DEFINE([RUSAGEH], [], [Define if you have the <sys/rusage.h> header file.]))
AC_CHECK_HEADER(glob.h,
	AC_DEFINE([GLOBH], [], [Define if you have the <glob.h> header file.]))
AC_CHECK_HEADERS([stdint.h inttypes.h])
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE

AC_TYPE_MODE_T
AC_TYPE_SIZE_T
AC_TYPE_INTPTR_T

AC_HEADER_TIME
AC_STRUCT_TM
AC_TYPE_UID_T
unreal_CHECK_TYPE_SIZES

dnl in the future, it would be nice to avoid AC_TRY_RUN to allow
dnl better support for crosscompiling.
AC_CACHE_CHECK([what kind of nonblocking sockets you have], [ac_cv_nonblocking],[
save_libs="$LIBS"
LIBS="$LIBS $SOCKLIB"
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <signal.h>
alarmed() {
exit(1);
}
int main() {
#ifdef O_NONBLOCK
char b[12], x[32];
int f, l = sizeof(x);
f = socket(AF_INET, SOCK_DGRAM, 0);
if (f >= 0 && !(fcntl(f, F_SETFL, O_NONBLOCK))) {
signal(SIGALRM, alarmed);
alarm(3);
recvfrom(f, b, 12, 0, (struct sockaddr *)x, &l);
alarm(0);
exit(0);
}
#endif
exit(1);
}
],ac_cv_nonblocking=O_NONBLOCK,[
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <signal.h>
alarmed() {
exit(0);
}
int main() {
#ifdef O_NDELAY
char b[12], x[32];
int f, l = sizeof(x);
f = socket(AF_INET, SOCK_DGRAM, 0);
if (f >= 0 && !(fcntl(f, F_SETFL, O_NDELAY))) {
signal(SIGALRM, alarmed);
alarm(3);
recvfrom(f, b, 12, 0, (struct sockaddr *)x, &l);
alarm(0);
exit(0);
}
#endif
exit(1);
}],ac_cv_nonblocking=O_NDELAY,[
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <signal.h>
alarmed() {
exit(1);
}
int main() {
#ifdef FIONBIO
char b[12], x[32];
int f, l = sizeof(x);
f = socket(AF_INET, SOCK_DGRAM, 0);
if (f >= 0 && !(fcntl(f, F_SETFL, FIONBIO))) {
signal(SIGALRM, alarmed);
alarm(3);
recvfrom(f, b, 12, 0, (struct sockaddr *)x, &l);
alarm(0);
exit(0);
}
#endif
exit(1);
], ac_cv_nonblocking=FIONBIO,ac_cv_nonblocking=none)])])])
if test "$ac_cv_nonblocking" = "O_NONBLOCK"; then
	AC_DEFINE([NBLOCK_POSIX], [], [Define if you have O_NONBLOCK])
elif test "$ac_cv_nonblocking" = "O_NDELAY"; then
	AC_DEFINE([NBLOCK_BSD], [], [Define if you have O_NDELAY])
elif test "$ac_cv_nonblocking" = "FIONBIO"; then
	AC_DEFINE([NBLOCK_SYSV], [], [Define if you have FIONBIO])
fi
LIBS="$save_libs"
dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_FUNC_SETPGRP
AC_FUNC_SETVBUF_REVERSED
AC_FUNC_ALLOCA
AC_CHECK_FUNCS(snprintf,
	AC_DEFINE([HAVE_SNPRINTF], [], [Define if you have snprintf]))
AC_CHECK_FUNCS(vsnprintf,
	AC_DEFINE([HAVE_VSNPRINTF], [], [Define if you have vsnprintf]))
AC_CHECK_FUNCS(strlcpy,
	AC_DEFINE([HAVE_STRLCPY], [], [Define if you have strlcpy. Otherwise, an internal implementation will be used!]))
AC_CHECK_FUNCS(strlcat,
	AC_DEFINE([HAVE_STRLCAT], [], [Define if you have strlcat]))
AC_CHECK_FUNCS(strlncat,
	AC_DEFINE([HAVE_STRLNCAT], [], [Define if you have strlncat]))
AC_CHECK_FUNCS(inet_pton,
	AC_DEFINE([HAVE_INET_PTON], [], [Define if you have inet_pton]))
AC_CHECK_FUNCS(inet_ntop,
	AC_DEFINE([HAVE_INET_NTOP], [], [Define if you have inet_ntop]))
dnl Check if it supports C99 style variable length arrays
AC_CACHE_CHECK([if C99 variable length arrays are supported], [ac_cv_varlen_arrays], [
AC_TRY_COMPILE(,[
int main() {
int i = 5;
int a[i];
a[0] = 1;
return 0;
}], ac_cv_varlen_arrays=yes, ac_cv_varlen_arrays=no)
])
if test "$ac_cv_varlen_arrays" = "yes" ; then
	AC_DEFINE([HAVE_C99_VARLEN_ARRAY], [], [Define if you have a compiler with C99 variable length array support])
fi

dnl This check doesn't need to be in ./configure, we can
dnl write the sourcecode to actually handle the return value
dnl of setrlimit if necessary... -- ohnobinki
AC_CACHE_CHECK([if we can set the core size to unlimited], [ac_cv_force_core], [
AC_TRY_RUN([
#include <sys/time.h>
#include <sys/resource.h>
#include <unistd.h>
int main() {
struct rlimit corelim;
corelim.rlim_cur = corelim.rlim_max = RLIM_INFINITY;
if (setrlimit(RLIMIT_CORE, &corelim))
exit(1);
exit(0);
}
],ac_cv_force_core=yes,ac_cv_force_core=no)
])
if test "$ac_cv_force_core" = "yes"; then
	AC_DEFINE([FORCE_CORE], [], [Define if you can set the core size to unlimited])
fi
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([gettimeofday],
	[AC_DEFINE([GETTIMEOFDAY], [], [Define if you have gettimeofday])],
	[AC_CHECK_FUNCS([lrand48],
		[AC_DEFINE([LRADN48], [], [Define if you have lrand48])])])
AC_CHECK_FUNCS([getrusage],
	[AC_DEFINE([GETRUSAGE_2], [], [Define if you have getrusage])],
	[AC_CHECK_FUNCS([times],
		[AC_DEFINE([TIMES_2], [], [Define if you have times])])])
AC_CHECK_FUNCS([setproctitle],
	[AC_DEFINE([HAVE_SETPROCTITLE], [], [Define if you have setproctitle])],
	[AC_CHECK_LIB([util],
		[setproctitle],
		[AC_DEFINE([HAVE_SETPROCTITLE], [], [Define if you have setproctitle])
		IRCDLIBS="$IRCDLIBS-lutil"],
		[
		AC_EGREP_HEADER([#define.*PS_STRINGS.*],[sys/exec.h],
			[AC_DEFINE([HAVE_PSSTRINGS],[], [Define if you have PS_STRINGS])],
			[AC_CHECK_FUNCS([pstat],
				[AC_DEFINE([HAVE_PSTAT], [], [Define if you have pstat])])])
		])
	]
)


AC_CACHE_CHECK([what type of signals you have], [ac_cv_sigtype], [
AC_TRY_RUN([
#include <signal.h>
int main() {
sigaction(SIGTERM, (struct sigaction *)0L, (struct sigaction *)0L);
}
], ac_cv_sigtype=POSIX, [
AC_TRY_RUN([
#include <signal.h>
int	calls = 0;
void	handler()
{
if (calls)
return;
calls++;
kill(getpid(), SIGTERM);
sleep(1);
}

int main() {
signal(SIGTERM, handler);
kill(getpid(), SIGTERM);
exit(0);
}
], ac_cv_sigtype=BSD,ac_cv_sigtype=SYSV)])])

if test "$ac_cv_sigtype" = "POSIX"; then
	AC_DEFINE([POSIX_SIGNALS], [], [Define if you have POSIX signals])
elif test "$ac_cv_sigtype" = "BSD"; then
	AC_DEFINE([BSD_RELIABLE_SIGNALS], [], [Define if you have BSD signals])
else
	AC_DEFINE([SYSV_UNRELIABLE_SIGNALS], [], [Define if you have SYSV signals])
fi 
AC_CHECK_FUNCS(strtoken,,AC_DEFINE([NEED_STRTOKEN], [], [Define if you need the strtoken function.]))
AC_CHECK_FUNCS(strtok,,AC_DEFINE([NEED_STRTOK], [], [Define if you need the strtok function.]))
AC_CHECK_FUNCS(strerror,,AC_DEFINE([NEED_STRERROR], [], [Define if you need the strerror function.]))
AC_CHECK_FUNCS(index,,AC_DEFINE([NOINDEX], [], [Define if you do not have the index function.]))
AC_CHECK_FUNCS(strtoul,,STRTOUL="strtoul.o")
AC_CHECK_FUNCS(bcopy,,AC_DEFINE([NEED_BCOPY], [], [Define if you don't have bcopy]))
AC_CHECK_FUNCS(bcmp,,AC_DEFINE([NEED_BCMP], [], [Define if you don't have bcmp]))
AC_CHECK_FUNCS(bzero,,AC_DEFINE([NEED_BZERO], [], [Define if you need bzero]))
AC_CHECK_FUNCS(strcasecmp,AC_DEFINE([GOT_STRCASECMP], [], [Define if you have strcasecmp]))
save_libs="$LIBS"
LIBS="$LIBS $SOCKLIB $INETLIB"
AC_CHECK_FUNCS(inet_addr,,AC_DEFINE([NEED_INET_ADDR], [], [Define if you need inet_addr]))
AC_CHECK_FUNCS(inet_ntoa,,AC_DEFINE([NEED_INET_NTOA], [], [Define if you need inet_ntoa]))
AC_CHECK_FUNCS(inet_netof,,AC_DEFINE([NEED_INET_NETOF], [], [Define if you need inet_netof]))
LIBS="$save_libs"
AC_CHECK_FUNCS(syslog,AC_DEFINE([HAVE_SYSLOG], [], [Define if you have syslog]))
AC_SUBST(STRTOUL)
AC_SUBST(CRYPTOLIB)
AC_SUBST(MODULEFLAGS)
AC_ARG_WITH(nick-history, [AS_HELP_STRING([--with-nick-history=length],[Specify the length of the nickname history])],
	[AC_DEFINE_UNQUOTED([NICKNAMEHISTORYLENGTH], [$withval], [Set to the nickname history length you want])],
	[AC_DEFINE([NICKNAMEHISTORYLENGTH], [2000], [Set to the nickname history length you want])])
AC_ARG_WITH([sendq], [AS_HELP_STRING([--with-sendq=maxsendq],[Specify the max sendq for the server])],
	[AC_DEFINE_UNQUOTED([MAXSENDQLENGTH], [$withval], [Set to the max sendq you want])],
	[AC_DEFINE([MAXSENDQLENGTH], [3000000], [Set to the max sendq you want])])
AC_ARG_WITH(permissions, [AS_HELP_STRING([--with-permissions=permissions], [Specify the default permissions for
configuration files])],
	dnl We have an apparently out-of-place 0 here because of a MacOSX bug and because
	dnl we assume that a user thinks that `chmod 0600 blah' is the same as `chmod 600 blah'
	dnl (#3189)
	[AC_DEFINE_UNQUOTED([DEFAULT_PERMISSIONS], [0$withval], [The default permissions for configuration files. Set to 0 to prevent unrealircd from calling chmod() on the files.])],
	[AC_DEFINE([DEFAULT_PERMISSIONS], [0600], [The default permissions for configuration files. Set to 0 to prevent unrealircd from calling chmod() on the files.])]) 
AC_ARG_WITH(dpath, [AS_HELP_STRING([--with-dpath=path],[Specify the path where configuration files are stored])],
	[AC_DEFINE_UNQUOTED([DPATH], ["$withval"], [Define the location of the configuration files])
		IRCDDIR="$withval"],
	[AC_DEFINE_UNQUOTED([DPATH], ["`pwd`"], [Define the location of the configuration files])
		IRCDDIR="`pwd`"])

AC_ARG_WITH(fd-setsize, [AS_HELP_STRING([--with-fd-setsize=size], [Specify the max file descriptors to use])],
	[ac_fd=$withval],
	[ac_fd=1024])
AC_DEFINE_UNQUOTED([MAXCONNECTIONS], [$ac_fd], [Set to the max connections you want])

dnl It would be nice if this could just respect --bindir like every other
dnl program does someday... -- ohnobinki
AC_ARG_WITH(spath, [AS_HELP_STRING([--with-spath],[Specify the location of the executable])],
	[AC_DEFINE_UNQUOTED([SPATH], ["$withval"], [Define the location of the executable])
		BINDIR="$withval"],
	[AC_DEFINE_UNQUOTED([SPATH], ["`pwd`/src/ircd"], [Define the location of the executable])
		BINDIR="`pwd`/src/ircd"])

AC_ARG_ENABLE([prefixaq],
	[AS_HELP_STRING([--disable-prefixaq],[Enable chanadmin (+a) and chanowner (+q) prefixes])],
	[],
	[enable_prefixaq=yes])
AS_IF([test $enable_prefixaq = "yes"],
	[AC_DEFINE([PREFIX_AQ], [], [Define if you want +a/+q prefixes])])

AC_ARG_WITH(showlistmodes,
	[AS_HELP_STRING([--with-showlistmodes], [Specify whether modes are shown in /list])],
	[AS_IF([test $withval = "yes"],
		[AC_DEFINE([LIST_SHOW_MODES], [], [Define if you want modes shown in /list])])])
AC_ARG_WITH(topicisnuhost, [AS_HELP_STRING([--with-topicisnuhost], [Display nick!user@host as the topic setter])],
	[AS_IF([test $withval = "yes"],
		[AC_DEFINE([TOPIC_NICK_IS_NUHOST], [], [Define if you want nick!user@host shown for the topic setter])])])
AC_ARG_WITH(shunnotices, [AS_HELP_STRING([--with-shunnotices], [Notify a user when he/she is no longer shunned])],
	[AS_IF([test $withval = "yes"],
		[AC_DEFINE([SHUN_NOTICES], [], [Define if you want users to be notified when their shun is removed])])])
AC_ARG_WITH(no-operoverride, [AS_HELP_STRING([--with-no-operoverride], [Disable OperOverride])],
	[AS_IF([test $withval = "yes"],
		[AC_DEFINE([NO_OPEROVERRIDE], [], [Define if you want OperOverride disabled])])])
AC_ARG_WITH(disableusermod, [AS_HELP_STRING([--with-disableusermod], [Disable /set* and /chg*])],
	[AS_IF([test $withval = "yes"],
		[AC_DEFINE([DISABLE_USERMOD], [], [Define if you want to disable /set* and /chg*])])])
AC_ARG_WITH(operoverride-verify, [AS_HELP_STRING([--with-operoverride-verify], [Require opers to invite themselves to +s/+p channels])],
	[AS_IF([test $withval = "yes"],
		[AC_DEFINE([OPEROVERRIDE_VERIFY], [], [Define if you want opers to have to use /invite to join +s/+p channels])])])
AC_ARG_WITH(disable-extendedban-stacking, [AS_HELP_STRING([--with-disable-extendedban-stacking], [Disable extended ban stacking])],
       [AS_IF([test $withval = "yes"],
       		[AC_DEFINE([DISABLE_STACKED_EXTBANS], [], [Define to disable extended ban stacking (~q:~c:\#chan, etc)])])])
AC_ARG_WITH(system-tre, [AS_HELP_STRING([--with-system-tre], [Use the system tre package instead of bundled, discovered using pkg-config])], [], [with_system_tre=no])
AC_ARG_WITH(system-cares, [AS_HELP_STRING([--with-system-cares], [Use the system c-ares (at least version 1.6.0) package instead of bundled c-ares, discovered using pkg-config])], [], [with_system_cares=no])
CHECK_SSL
AC_ARG_ENABLE(dynamic-linking, [AS_HELP_STRING([--disable-dynamic-linking], [Make the IRCd statically link with shared objects rather than dynamically (noone knows if disabling dynamic linking actually does anything or not)])],
	[enable_dynamic_linking=$enableval], [enable_dynamic_linking="yes"])
AS_IF([test $enable_dynamic_linking = "yes"],
	[AC_ENABLE_DYN],
	[AC_DEFINE([STATIC_LINKING], [], [Link... statically(?) (defining this macro will probably cause the build tofail)])])

AC_ARG_ENABLE([inet6], [AS_HELP_STRING([--enable-inet6], [Make the IRCd support IPv6])],
	[AS_IF([test $enableval = "yes"],
		[AC_ENABLE_INET6])])
AC_SUBST(IRCDDIR)
AC_SUBST(BINDIR)
AC_MSG_CHECKING([if FD_SETSIZE is large enough to allow $ac_fd file descriptors])
AC_COMPILE_IFELSE([
#include <sys/types.h>
#include <sys/time.h>
int main() {
#if FD_SETSIZE < $ac_fd
#error FD_SETSIZE is smaller than $ac_fd
#endif
exit(0);
}
], AC_MSG_RESULT([yes]), [
# must be passed on the commandline to avoid a ``warning, you redefined something''
FD_SETSIZE="-DFD_SETSIZE=$ac_fd"
AC_MSG_RESULT(no)
])
AC_SUBST([FD_SETSIZE])

case `uname -s` in
	*SunOS*|*solaris*)
		AC_DEFINE([_SOLARIS], [], [Define if you are compiling unrealircd on Sun's (or Oracle's?) Solaris])
		IRCDLIBS="$IRCDLIBS -lresolv "
		;;
esac

AC_CHECK_FUNCS([poll],
	AC_DEFINE([HAVE_POLL], [], [Define if you have poll]))
AC_CHECK_FUNCS([epoll_create epoll_ctl epoll_wait],
	AC_DEFINE([HAVE_EPOLL], [], [Define if you have epoll]))
AC_CHECK_FUNCS([kqueue kevent],
	AC_DEFINE([HAVE_KQUEUE], [], [Define if you have kqueue]))

dnl c-ares needs PATH_SEPARATOR set or it will
dnl fail on certain solaris boxes. We might as
dnl well set it here.
export PATH_SEPARATOR

AS_IF([test "x$with_system_tre" = "xno"],[
dnl REMEMBER TO CHANGE WITH A NEW TRE RELEASE!
tre_version="0.8.0"
AC_MSG_RESULT(extracting TRE regex library)
cur_dir=`pwd`
cd extras
dnl remove old tre directory to force a recompile...
dnl and remove its installation prefix just to clean things up.
rm -rf tre-$tre_version rege[]xp
if test "x$ac_cv_path_GUNZIP" = "x" ; then
	tar xfz tre.tar.gz
else
	cp tre.tar.gz tre.tar.gz.bak
	gunzip -f tre.tar.gz
	cp tre.tar.gz.bak tre.tar.gz
	tar xf tre.tar
fi
AC_MSG_RESULT(configuring TRE regex library)
cd tre-$tre_version
./configure --disable-agrep --disable-shared --disable-system-abi --disable-wchar --disable-multibyte --prefix=$cur_dir/extras/regexp || exit 1
AC_MSG_RESULT(compiling TRE regex library)
$ac_cv_prog_MAKER || exit 1
AC_MSG_RESULT(installing TRE regex library)
$ac_cv_prog_MAKER install || exit 1
TRE_CFLAGS="-I$cur_dir/extras/regexp/include"
AC_SUBST(TRE_CFLAGS)

TRE_LIBS=
dnl See c-ares's compilation section for more info on this hack.
dnl ensure that we're linking against the bundled version of tre
dnl (we only reach this code if linking against the bundled version is desired).
AS_IF([test -n "$ac_cv_path_PKGCONFIG"],
       [TRE_LIBS="`$ac_cv_path_PKGCONFIG --static --libs tre.pc | sed -e ['s,-L\([^ ]*regex[^ ]*lib\)\( .*\)-ltre,\1/libtre.a \2,']`"])
dnl For when pkg-config isn't available -- or for when pkg-config
dnl doesn't see the tre.pc file somehow... (#3982)
AS_IF([test -z "$TRE_LIBS"],
       [TRE_LIBS="../extras/regexp/lib/libtre.a"])
AC_SUBST(TRE_LIBS)
cd $cur_dir
],[
dnl use pkgconfig for tre:
PKG_CHECK_MODULES([TRE], tre >= 0.7.5)
])

AS_IF([test "x$with_system_cares" = "xno"],[
dnl REMEMBER TO CHANGE WITH A NEW C-ARES RELEASE!
dnl NOTE: when changing this here, ALSO change it in ./curlinstall
dnl       and in the comment in this file around line 400!
cares_version="1.10.0"
AC_MSG_RESULT(extracting c-ares resolver library)
cur_dir=`pwd`
cd extras
dnl remove old c-ares directory to force a recompile...
rm -rf c-ares-$cares_version c-ares
if test "x$ac_cv_path_GUNZIP" = "x" ; then
	tar xfz c-ares.tar.gz
else
	cp c-ares.tar.gz c-ares.tar.gz.bak
	gunzip -f c-ares.tar.gz
	cp c-ares.tar.gz.bak c-ares.tar.gz
	tar xf c-ares.tar
fi
AC_MSG_RESULT(configuring c-ares library)
cd c-ares-$cares_version
./configure --prefix=$cur_dir/extras/c-ares --disable-shared || exit 1
AC_MSG_RESULT(compiling c-ares resolver library)
$ac_cv_prog_MAKER || exit 1
AC_MSG_RESULT(installing c-ares resolver library)
$ac_cv_prog_MAKER install || exit 1
CARES_CFLAGS="-I$cur_dir/extras/c-ares/include"
AC_SUBST(CARES_CFLAGS)
CARES_LIBS="-L../extras/c-ares/lib"

dnl Set default library parameters for when pkg-config is not available
dnl Ugly cd'ing out of extras/c-ares-xxx ;)
dnl Note: must be a full path, not relative path.
cd ../..
CARESLIBSALT="`pwd`/extras/c-ares/lib/libcares.a"
cd -
case `uname -s` in
	*FreeBSD*)
		CARESLIBSALT="$CARESLIBSALT"
		;;
	*Linux*)
		CARESLIBSALT="$CARESLIBSALT -lrt"
		;;
	*SunOS*)
		CARESLIBSALT="$CARESLIBSALT -lrt"
		;;
esac

dnl Use pkg-config for c-ares libraries, and if not available use defaults
dnl from above. Also, if pkg-config returns an empty result (ex: on fbsd
dnl or older versions it might be missing --static) then also use defaults.
if test "x$ac_cv_path_PKGCONFIG" = "x" ; then
	CARES_LIBS="$CARES_LIBS $CARESLIBSALT"
else
	CARES_LIBSPRE="$CARES_LIBS"
	dnl the sed expression forces an absolute path to the .a file to be generated
	dnl because this is what libtool would do. If this wasn't done and /usr/lib*/libcares.so
	dnl exists, then unrealircd would still try to link against the system c-ares.
	dnl The [] quotation is needed because the sed expression has [] in it.
	[CARES_LIBS="$CARES_LIBS `$ac_cv_path_PKGCONFIG --static --libs libcares.pc | sed -e 's,-L\([^ ]\+lib\) -lcares,\1/libcares.a,'`"]
	if test "$CARES_LIBS" = "$CARES_LIBSPRE " ; then
		CARES_LIBS="$CARES_LIBS $CARESLIBSALT"
	fi
fi
AC_SUBST(CARES_LIBS)
cd $cur_dir
],[
dnl use pkg-config for system c-ares:
PKG_CHECK_MODULES([CARES], libcares >= 1.6.0)
])

CHECK_LIBCURL

UNRLINCDIR="`pwd`/include"
AC_SUBST(UNRLINCDIR)

AC_CONFIG_FILES([Makefile
	src/modules/Makefile
	src/modules/chanmodes/Makefile
	src/modules/usermodes/Makefile
	unreal
	ircdcron/ircdchk
	ircdcron/ircd.cron])
AC_OUTPUT
chmod 0700 unreal
chmod 0700 ircdcron/ircdchk