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ngircd/configure.in
Alexander Barton ebf2f991b5 configure.in: use AC_SEARCH_LIBS (not AC_CHECK_LIB) 
Use the AC_SEARCH_LIBS macro to test for "sometimes but not always"
required libraries, not AC_CHECK_LIB.
2012-09-13 16:40:04 +02:00

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#
# ngIRCd -- The Next Generation IRC Daemon
# Copyright (c)2001-2012 Alexander Barton (alex@barton.de) and Contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# Please read the file COPYING, README and AUTHORS for more information.
#
define(VERSION_ID,esyscmd(git describe|sed -e 's/rel-//g'|sed -e 's/-/~/'|tr -d \\n))
# -- Initialisation --
AC_PREREQ([2.67])
AC_INIT([ngIRCd], VERSION_ID,
[ngircd-ml@ngircd.barton.de], [ngircd], [http://ngircd.barton.de/])
AC_CONFIG_SRCDIR([src/ngircd/ngircd.c])
AC_CONFIG_HEADER([src/config.h])
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE([1.11])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
# -- Templates for config.h --
AH_TEMPLATE([DEBUG], [Define if debug-mode should be enabled])
AH_TEMPLATE([HAVE_sockaddr_in_len], [Define if sockaddr_in.sin_len exists])
AH_TEMPLATE([HAVE_socklen_t], [Define if socklen_t exists])
AH_TEMPLATE([IDENTAUTH], [Define if the server should do IDENT requests])
AH_TEMPLATE([IRCPLUS], [Define if IRC+ protocol should be used])
AH_TEMPLATE([PAM], [Define if PAM should be used])
AH_TEMPLATE([SNIFFER], [Define if IRC sniffer should be enabled])
AH_TEMPLATE([STRICT_RFC], [Define if ngIRCd should behave strict RFC compliant])
AH_TEMPLATE([SYSLOG], [Define if syslog should be used for logging])
AH_TEMPLATE([TCPWRAP], [Define if TCP wrappers should be used])
AH_TEMPLATE([WANT_IPV6], [Define if IPV6 protocol should be enabled])
AH_TEMPLATE([ZLIB], [Define if zlib compression should be enabled])
AH_TEMPLATE([HOST_OS], [Target operating system name])
AH_TEMPLATE([HOST_VENDOR], [Target system vendor])
AH_TEMPLATE([HOST_CPU], [Target CPU name])
# -- C Compiler --
AC_PROG_CC
AC_PROG_CC_STDC
# -- Helper programs --
AC_PROG_AWK
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_RANLIB
# -- Compiler Features --
AC_C_CONST
AC_C_INLINE
AM_C_PROTOTYPES
# -- Hard coded system and compiler dependencies/features/options ... --
AC_DEFUN([GCC_STACK_PROTECT_CC],[
ssp_cc=yes
# we use -fstack-protector-all for the test to enfoce the use of the guard variable
AC_MSG_CHECKING([whether ${CC} accepts -fstack-protector])
ssp_old_cflags="$CFLAGS"
CFLAGS="$CFLAGS -fstack-protector-all"
AC_TRY_LINK(,,, ssp_cc=no)
echo $ssp_cc
CFLAGS="$ssp_old_cflags"
if test "X$ssp_cc" = "Xyes"; then
CFLAGS="$CFLAGS -fstack-protector"
AC_DEFINE([ENABLE_SSP_CC], 1, [Define if SSP C support is enabled.])
fi
])
if test "$GCC" = "yes"; then
# We are using the GNU C compiler. Good!
CFLAGS="$CFLAGS -pipe -W -Wall -Wpointer-arith -Wstrict-prototypes"
GCC_STACK_PROTECT_CC
fi
case "$host_os" in
hpux*)
# This is HP/UX, we need to define _XOPEN_SOURCE_EXTENDED
# (tested with HP/UX 11.11)
CFLAGS="$CFLAGS -D_XOPEN_SOURCE_EXTENDED"
;;
esac
# Add additional CFLAGS, eventually specified on the command line:
test -n "$CFLAGS_ADD" && CFLAGS="$CFLAGS $CFLAGS_ADD"
CFLAGS="$CFLAGS -DSYSCONFDIR='\"\$(sysconfdir)\"'"
# -- Headers --
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME
# Required header files
AC_CHECK_HEADERS([ \
fcntl.h netdb.h netinet/in.h netinet/in_systm.h stdlib.h string.h \
strings.h sys/socket.h sys/time.h unistd.h \
],,AC_MSG_ERROR([required C header missing!]))
# Optional header files
AC_CHECK_HEADERS([ \
arpa/inet.h inttypes.h malloc.h netinet/ip.h stdbool.h stddef.h \
stdint.h varargs.h \
])
# -- Datatypes --
AC_MSG_CHECKING(whether socklen_t exists)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
socklen_t a, b;
a = 2; b = 4; a += b;
],[
AC_DEFINE(HAVE_socklen_t) AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
])
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UID_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT8_T
AC_CHECK_MEMBER([struct sockaddr_in.sin_len], AC_DEFINE(HAVE_sockaddr_in_len),,
[#include <arpa/inet.h>])
# -- Libraries --
# memmove: A/UX libUTIL
AC_SEARCH_LIBS([memmove], [UTIL], [], [
AC_MSG_ERROR([unable to find the memmove() function])
])
# gethostbyname: Solaris libnsl
AC_SEARCH_LIBS([gethostbyname], [nsl], [], [
AC_MSG_ERROR([unable to find the gethostbyname() function])
])
# bind: SVR4 libsocket
AC_SEARCH_LIBS([bind], [socket], [], [
AC_MSG_ERROR([unable to find the bind() function])
])
# -- Functions --
AC_FUNC_FORK
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_FUNC_STRFTIME
# Required functions
AC_CHECK_FUNCS([ \
alarm dup2 endpwent gethostbyaddr gethostbyname gethostname \
gettimeofday inet_ntoa memmove memset setsid socket strcasecmp \
strchr strcspn strerror strncasecmp strrchr strspn strstr \
],,
AC_MSG_ERROR([required function missing!]))
# Optional functions
AC_CHECK_FUNCS([ \
gai_strerror getaddrinfo getnameinfo inet_aton sigaction sigprocmask \
snprintf vsnprintf strdup strlcpy strlcat strtok_r waitpid])
# -- Configuration options --
# use syslog?
x_syslog_on=no
AC_ARG_WITH(syslog,
AS_HELP_STRING([--without-syslog],
[disable syslog (autodetected by default)]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_SEARCH_LIBS([syslog], [be], [x_syslog_on=yes], [
AC_MSG_ERROR([Can't enable syslog!])
])
fi
],
[ AC_SEARCH_LIBS([syslog], [be], [x_syslog_on=yes])
]
)
if test "$x_syslog_on" = "yes"; then
AC_DEFINE(SYSLOG, 1)
AC_CHECK_HEADERS(syslog.h,,AC_MSG_ERROR([required C header missing!]))
fi
# use zlib compression?
x_zlib_on=no
AC_ARG_WITH(zlib,
AS_HELP_STRING([--without-zlib],
[disable zlib compression (autodetected by default)]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_LIB(z, deflate)
AC_CHECK_FUNCS(deflate, x_zlib_on=yes,
AC_MSG_ERROR([Can't enable zlib!])
)
fi
],
[ AC_CHECK_LIB(z, deflate)
AC_CHECK_FUNCS(deflate, x_zlib_on=yes)
]
)
if test "$x_zlib_on" = "yes"; then
AC_DEFINE(ZLIB, 1)
AC_CHECK_HEADERS(zlib.h,,AC_MSG_ERROR([required C header missing!]))
fi
# detect which IO API to use:
x_io_backend=none
AC_ARG_WITH(select,
AS_HELP_STRING([--without-select],
[disable select IO support (autodetected by default)]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_FUNCS(select, x_io_select=yes,
AC_MSG_ERROR([Can't enable select IO support!])
)
fi
],
[
AC_CHECK_FUNCS(select, x_io_select=yes)
]
)
AC_ARG_WITH(poll,
AS_HELP_STRING([--without-poll],
[disable poll support (autodetected by default)]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_FUNCS(poll, [
AC_CHECK_HEADERS(poll.h,
x_io_backend=poll\(\),
AC_MSG_ERROR(
[Can't enable poll IO support!])
)
], [
AC_MSG_ERROR([Can't enable poll IO support!])
])
fi
],
[
AC_CHECK_FUNCS(poll, [
AC_CHECK_HEADERS(poll.h, x_io_backend=poll\(\))
])
]
)
AC_ARG_WITH(devpoll,
AS_HELP_STRING([--without-devpoll],
[disable /dev/poll IO support (autodetected by default)]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_HEADERS(sys/devpoll.h,,AC_MSG_ERROR([required C header missing!]))
fi
],
[
AC_CHECK_HEADERS(sys/devpoll.h, x_io_backend=/dev/poll)
]
)
AC_ARG_WITH(epoll,
AS_HELP_STRING([--without-epoll],
[disable epoll IO support (autodetected by default)]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_FUNCS(epoll_create, x_io_epoll=yes,
AC_MSG_ERROR([Can't enable epoll IO support!])
)
fi
],
[
AC_CHECK_FUNCS(epoll_create, x_io_epoll=yes)
]
)
AC_ARG_WITH(kqueue,
AS_HELP_STRING([--without-kqueue],
[disable kqueue IO support (autodetected by default)]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_FUNCS(kqueue, x_io_backend=kqueue\(\),
AC_MSG_ERROR([Can't enable kqueue IO support!])
)
fi
],
[
AC_CHECK_FUNCS(kqueue, x_io_backend=kqueue\(\))
]
)
if test "$x_io_epoll" = "yes" -a "$x_io_select" = "yes"; then
# when epoll() and select() are available, we'll use both!
x_io_backend="epoll(), select()"
else
if test "$x_io_epoll" = "yes"; then
# we prefere epoll() if it is available
x_io_backend="epoll()"
else
if test "$x_io_select" = "yes" -a "$x_io_backend" = "none"; then
# we'll use select, when available and no "better"
# interface has been detected ...
x_io_backend="select()"
fi
fi
fi
if test "$x_io_backend" = "none"; then
AC_MSG_ERROR([No useable IO API activated/found!?])
fi
# use SSL?
AC_ARG_WITH(openssl,
AS_HELP_STRING([--with-openssl],
[enable SSL support using OpenSSL]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_LIB(crypto, BIO_s_mem)
AC_CHECK_LIB(ssl, SSL_library_init)
AC_CHECK_FUNCS(SSL_library_init, x_ssl_openssl=yes,
AC_MSG_ERROR([Can't enable openssl])
)
fi
]
)
AC_ARG_WITH(gnutls,
AS_HELP_STRING([--with-gnutls],
[enable SSL support using gnutls]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_LIB(gnutls, gnutls_global_init)
AC_CHECK_FUNCS(gnutls_global_init, x_ssl_gnutls=yes,
AC_MSG_ERROR([Can't enable gnutls])
)
fi
]
)
x_ssl_lib="no"
if test "$x_ssl_gnutls" = "yes"; then
if test "$x_ssl_openssl" = "yes";then
AC_MSG_ERROR([Cannot enable both gnutls and openssl])
fi
x_ssl_lib=gnutls
fi
if test "$x_ssl_openssl" = "yes"; then
x_ssl_lib=openssl
fi
# use TCP wrappers?
x_tcpwrap_on=no
AC_ARG_WITH(tcp-wrappers,
AS_HELP_STRING([--with-tcp-wrappers],
[enable TCP wrappers support]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_MSG_CHECKING(for hosts_access)
LIBS="-lwrap $LIBS"
AC_TRY_LINK([
#include <tcpd.h>
int allow_severity = 0;
int deny_severity = 0;
],[
tcpd_warn("link test");
],[
AC_MSG_RESULT(yes)
AC_DEFINE(TCPWRAP, 1)
x_tcpwrap_on=yes
],[
AC_MSG_RESULT(no)
AC_MSG_ERROR([Can't enable TCP wrappers!])
])
fi
]
)
# do IDENT requests using libident?
x_identauth_on=no
AC_ARG_WITH(ident,
AS_HELP_STRING([--with-ident],
[enable "IDENT" ("AUTH") protocol support]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_LIB(ident, ident_id)
AC_CHECK_FUNCS(ident_id, x_identauth_on=yes,
AC_MSG_ERROR([Can't enable IDENT support!])
)
fi
]
)
if test "$x_identauth_on" = "yes"; then
AC_DEFINE(IDENTAUTH, 1)
AC_CHECK_HEADERS(ident.h,,AC_MSG_ERROR([required C header missing!]))
fi
# compile in PAM support?
x_pam_on=no
AC_ARG_WITH(pam,
AS_HELP_STRING([--with-pam],
[enable user authentication using PAM]),
[ if test "$withval" != "no"; then
if test "$withval" != "yes"; then
CFLAGS="-I$withval/include $CFLAGS"
CPPFLAGS="-I$withval/include $CPPFLAGS"
LDFLAGS="-L$withval/lib $LDFLAGS"
fi
AC_CHECK_LIB(pam, pam_authenticate)
AC_CHECK_FUNCS(pam_authenticate, x_pam_on=yes,
AC_MSG_ERROR([Can't enable PAM support!])
)
fi
]
)
if test "$x_pam_on" = "yes"; then
AC_DEFINE(PAM, 1)
AC_CHECK_HEADERS(security/pam_appl.h,pam_ok=yes)
if test "$pam_ok" != "yes"; then
AC_CHECK_HEADERS(pam/pam_appl.h,pam_ok=yes,
AC_MSG_ERROR([required C header missing!]))
fi
fi
# compile in IRC+ protocol support?
x_ircplus_on=yes
AC_ARG_ENABLE(ircplus,
AS_HELP_STRING([--disable-ircplus],
[disable IRC+ protocol]),
if test "$enableval" = "no"; then x_ircplus_on=no; fi
)
if test "$x_ircplus_on" = "yes"; then
AC_DEFINE(IRCPLUS, 1)
fi
# enable support for IPv6?
x_ipv6_on=no
AC_ARG_ENABLE(ipv6,
AS_HELP_STRING([--enable-ipv6],
[enable IPv6 protocol support]),
if test "$enableval" = "yes"; then x_ipv6_on=yes; fi
)
if test "$x_ipv6_on" = "yes"; then
# getaddrinfo() and getnameinfo() are optional when not compiling
# with IPv6 support, but are required for IPv6 to work!
AC_CHECK_FUNCS([ \
getaddrinfo getnameinfo \
],,AC_MSG_ERROR([required function missing for IPv6 support!]))
AC_DEFINE(WANT_IPV6, 1)
fi
# compile in IRC "sniffer"?
x_sniffer_on=no; x_debug_on=no
AC_ARG_ENABLE(sniffer,
AS_HELP_STRING([--enable-sniffer],
[enable IRC traffic sniffer (enables debug mode)]),
if test "$enableval" = "yes"; then
AC_DEFINE(SNIFFER, 1)
x_sniffer_on=yes; x_debug_on=yes
fi
)
# enable additional debugging code?
AC_ARG_ENABLE(debug,
AS_HELP_STRING([--enable-debug],
[show additional debug output]),
if test "$enableval" = "yes"; then x_debug_on=yes; fi
)
if test "$x_debug_on" = "yes"; then
AC_DEFINE(DEBUG, 1)
test "$GCC" = "yes" && CFLAGS="-pedantic $CFLAGS"
AC_CHECK_FUNCS(mtrace)
fi
# enable "strict RFC rules"?
x_strict_rfc_on=no
AC_ARG_ENABLE(strict-rfc,
AS_HELP_STRING([--enable-strict-rfc],
[strict RFC conformance -- may break clients!]),
if test "$enableval" = "yes"; then
AC_DEFINE(STRICT_RFC, 1)
x_strict_rfc_on=yes
fi
)
# -- Definitions --
AC_DEFINE_UNQUOTED(HOST_CPU, "$host_cpu" )
AC_DEFINE_UNQUOTED(HOST_VENDOR, "$host_vendor" )
AC_DEFINE_UNQUOTED(HOST_OS, "$host_os" )
# Add additional CFLAGS, eventually specified on the command line, but after
# running this configure script. Useful for "-Werror" for example.
test -n "$CFLAGS_END" && CFLAGS="$CFLAGS $CFLAGS_END"
# -- Generate files --
AC_CONFIG_FILES([ \
Makefile \
contrib/Anope/Makefile \
contrib/Debian/Makefile \
contrib/MacOSX/Makefile \
contrib/MacOSX/ngIRCd.pmdoc/Makefile \
contrib/MacOSX/ngIRCd.xcodeproj/Makefile \
contrib/Makefile \
doc/Makefile \
doc/src/Makefile \
man/Makefile \
src/ipaddr/Makefile \
src/Makefile \
src/ngircd/Makefile \
src/portab/Makefile \
src/testsuite/Makefile \
src/tool/Makefile \
])
AC_OUTPUT
type dpkg >/dev/null 2>&1
if test $? -eq 0; then
# Generate debian/ link if the dpkg command exists
# (read: if we are running on a debian compatible system)
echo "creating Debian-specific links ..."
test -f debian/rules || ln -s contrib/Debian debian
fi
# -- Result --
echo
echo "ngIRCd $PACKAGE_VERSION has been configured with the following options:"
echo
# Someone please show me a better way :) [borrowed by OpenSSH]
B=`eval echo ${bindir}` ; B=`eval echo ${B}`
S=`eval echo ${sbindir}` ; S=`eval echo ${S}`
C=`eval echo ${sysconfdir}` ; C=`eval echo ${C}`
M=`eval echo ${mandir}` ; M=`eval echo ${M}`
D=`eval echo ${docdir}` ; D=`eval echo ${D}`
echo " Host: ${host}"
echo " Compiler: ${CC}"
test -n "$CFLAGS" && echo " Compiler flags: ${CFLAGS}"
test -n "$CPPFLAGS" && echo " Preprocessor flags: ${CPPFLAGS}"
test -n "$LDFLAGS" && echo " Linker flags: ${LDFLAGS}"
test -n "$LIBS" && echo " Libraries: ${LIBS}"
echo
echo " 'ngircd' binary: $S"
echo " Configuration file: $C"
echo " Manual pages: $M"
echo " Documentation: $D"
echo
echo $ECHO_N " Syslog support: $ECHO_C"
test "$x_syslog_on" = "yes" \
&& echo $ECHO_N "yes $ECHO_C" \
|| echo $ECHO_N "no $ECHO_C"
echo $ECHO_N " Enable debug code: $ECHO_C"
test "$x_debug_on" = "yes" \
&& echo "yes" \
|| echo "no"
echo $ECHO_N " zlib compression: $ECHO_C"
test "$x_zlib_on" = "yes" \
&& echo $ECHO_N "yes $ECHO_C" \
|| echo $ECHO_N "no $ECHO_C"
echo $ECHO_N " IRC sniffer: $ECHO_C"
test "$x_sniffer_on" = "yes" \
&& echo "yes" \
|| echo "no"
echo $ECHO_N " Use TCP Wrappers: $ECHO_C"
test "$x_tcpwrap_on" = "yes" \
&& echo $ECHO_N "yes $ECHO_C" \
|| echo $ECHO_N "no $ECHO_C"
echo $ECHO_N " Strict RFC mode: $ECHO_C"
test "$x_strict_rfc_on" = "yes" \
&& echo "yes" \
|| echo "no"
echo $ECHO_N " IDENT support: $ECHO_C"
test "$x_identauth_on" = "yes" \
&& echo $ECHO_N "yes $ECHO_C" \
|| echo $ECHO_N "no $ECHO_C"
echo $ECHO_N " IRC+ protocol: $ECHO_C"
test "$x_ircplus_on" = "yes" \
&& echo "yes" \
|| echo "no"
echo $ECHO_N " IPv6 protocol: $ECHO_C"
test "$x_ipv6_on" = "yes" \
&& echo $ECHO_N "yes $ECHO_C" \
|| echo $ECHO_N "no $ECHO_C"
echo $ECHO_N " I/O backend: $ECHO_C"
echo "\"$x_io_backend\""
echo $ECHO_N " PAM support: $ECHO_C"
test "$x_pam_on" = "yes" \
&& echo $ECHO_N "yes $ECHO_C" \
|| echo $ECHO_N "no $ECHO_C"
echo $ECHO_N " SSL support: $ECHO_C"
echo "$x_ssl_lib"
echo
# -eof-
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