view configure.in @ 1000:0fbafade2d85 HEAD

If auth/login process died unexpectedly, the exit status or killing signal wasn't logged.
author Timo Sirainen <tss@iki.fi>
date Tue, 21 Jan 2003 09:58:49 +0200
parents 7e9b90bfe78c
children 40a327d356de
line wrap: on
line source

AC_INIT(src)

AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(dovecot, 0.99.7)

AM_MAINTAINER_MODE

AC_ISC_POSIX
AC_PROG_CC
AC_PROG_CPP
AC_STDC_HEADERS
AC_C_INLINE
AC_ARG_PROGRAM
AM_PROG_LIBTOOL

AC_CHECK_HEADERS(string.h stdlib.h stdint.h unistd.h dirent.h iconv.h)
AC_CHECK_HEADERS(sys/uio.h sys/sysmacros.h sys/resource.h linux/mman.h)
AC_CHECK_HEADERS(sys/select.h)

# check posix headers
AC_CHECK_HEADERS(sys/time.h)

AC_ARG_ENABLE(ipv6,
[  --enable-ipv6           Enable IPv6 support (default)],
	if test x$enableval = xno; then
		want_ipv6=no
	else
		want_ipv6=yes
	fi,
	want_ipv6=yes)

AC_ARG_ENABLE(debug,
[  --enable-debug          Enable some extra checks for debugging],
	if test x$enableval = xyes; then
		AC_DEFINE(DEBUG,, Build with extra debugging checks)
	fi)

AC_ARG_ENABLE(asserts,
[  --enable-asserts        Enable asserts (default)],
	if test x$enableval = xno; then
		AC_DEFINE(DISABLE_ASSERTS,, Disable asserts)
	fi)

AC_ARG_WITH(file-offset-size,
[  --with-file-offset-size=BITS  Set size of file offsets. Usually 32 or 64.
                          (default: 64 if available)],
	preferred_off_t_bits=$withval,
	preferred_off_t_bits=64)

AC_ARG_WITH(mem-align,
[  --with-mem-align=BYTES  Set the memory alignment (default: 8)],
	mem_align=$withval,
	mem_align=8)

AC_ARG_WITH(passwd,
[  --with-passwd           Build with /etc/passwd support (default)],
	if test x$withval = xno; then
		want_passwd=no
	else
		want_passwd=yes
	fi,
	want_passwd=yes)

AC_ARG_WITH(passwd-file,
[  --with-passwd-file      Build with passwd-like file support (default)],
	if test x$withval = xno; then
		want_passwd_file=no
	else
		want_passwd_file=yes
	fi,
	want_passwd_file=yes)

AC_ARG_WITH(shadow,
[  --with-shadow           Build with shadow password support (default)],
	if test x$withval = xno; then
		want_shadow=no
	else
		want_shadow=yes
	fi,
	want_shadow=yes)

AC_ARG_WITH(pam,
[  --with-pam              Build with PAM support (default)],
	if test x$withval = xno; then
		want_pam=no
	else
		want_pam=yes
	fi,
	want_pam=yes)

AC_ARG_WITH(vpopmail,
[  --with-vpopmail         Build with vpopmail support (default)],
	if test x$withval = xno; then
		want_vpopmail=no
	else
		want_vpopmail=yes
	fi,
	want_vpopmail=yes)

AC_ARG_WITH(cyrus-sasl2,
[  --with-cyrus-sasl2      Build with Cyrus SASL 2 library support],
	if test x$withval = xno; then
		want_cyrus_sasl2=no
	else
		want_cyrus_sasl2=yes
	fi,
	want_cyrus_sasl2=no)

AC_ARG_WITH(rawlog,
[  --with-rawlog           Build support for logging user traffic],
	if test x$withval = xyes; then
		AC_DEFINE(BUILD_RAWLOG,, Build with rawlogging feature)
	fi)

AC_ARG_WITH(ssl,
[  --with-ssl=[gnutls|openssl] Build with GNUTLS (default) or OpenSSL],
	if test x$withval = xno; then
		want_gnutls=no
		want_openssl=no
	elif test x$withval = xgnutls; then
		want_gnutls=yes
		want_openssl=no
	elif test x$withval = xopenssl; then
		want_gnutls=no
		want_openssl=yes
	else
		want_gnutls=yes
		want_openssl=yes
	fi, [
		want_gnutls=yes
		want_openssl=yes
	])

AC_ARG_WITH(ssldir,
[  --with-ssldir=DIR       SSL base directory for certificates (/etc/ssl)],
	ssldir="$withval",
	ssldir=/etc/ssl
)
AC_SUBST(ssldir)

dnl * gcc specific options
if test "x$ac_cv_prog_gcc" = "xyes"; then
	# -Wcast-qual -Wcast-align -Wconversion # too many warnings
	# -Wstrict-prototypes -Wredundant-decls # may give warnings in some systems
	# -Wmissing-format-attribute -Wmissing-noreturn # a couple of warnings
	CFLAGS="$CFLAGS -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast"
fi

dnl **
dnl ** just some generic stuff...
dnl **

AC_CHECK_FUNC(socket, [], [
	AC_CHECK_LIB(socket, socket, [
		LIBS="$LIBS -lsocket"
	])
])

AC_CHECK_FUNC(inet_addr, [], [
	AC_CHECK_LIB(nsl, inet_addr, [
		LIBS="$LIBS -lnsl"
	])
])

AC_CHECK_FUNC(fdatasync, [
	have_fdatasync=yes
], [
	AC_CHECK_LIB(rt, fdatasync, [
		have_fdatasync=yes
		LIBS="$LIBS -lrt"
	])
])

if test "$have_fdatasync" = "yes"; then
	AC_DEFINE(HAVE_FDATASYNC,, Define if you have fdatasync())
fi

dnl * after -lsocket and -lnsl tests, inet_aton() may be in them
AC_CHECK_FUNCS(fcntl flock inet_aton sigaction getpagesize madvise \
               strcasecmp stricmp vsnprintf vsyslog writev setrlimit \
	       setproctitle)

dnl * poll/select?

AC_CHECK_FUNC(poll, [
	AC_DEFINE(IOLOOP_POLL,, Implement I/O loop with poll())
], [
	AC_DEFINE(IOLOOP_SELECT,, Implement I/O loop with select())
])

dnl * memory alignment
AC_DEFINE_UNQUOTED(MEM_ALIGN_SIZE, $mem_align, Required memory alignment)

dnl * OS specific options
case "$host_os" in
	hpux*)
		CFLAGS="$CFLAGS -D_XOPEN_SOURCE_EXTENDED"
		;;
	*)
		;;
esac

AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long long)

AC_DEFUN(AC_TYPEOF, [
  dnl * first check if we can get the size with redefining typedefs

  order="$2"
  if test "$2" = ""; then
    order="int long long-long"
  fi

  result=""
  visible="unknown"
  AC_MSG_CHECKING([type of $1])

  if test "x$ac_cv_prog_gcc" = "xyes"; then
    dnl * try with printf() + -Werror
    old_CFLAGS="$CFLAGS"
    CFLAGS="$CFLAGS -Werror"

    for type in $order; do
      case "$type" in
        int)
	  fmt="%d"
	  ;;
        long)
	  fmt="%ld"
	  ;;
        long-long)
	  fmt="%lld"
	  ;;
	*)
	  fmt=""
	  ;;
      esac

      if test "$fmt" != ""; then
	AC_TRY_COMPILE([
	  #include <sys/types.h>
	  #include <stdio.h>
	], [
	  printf("$fmt", ($1)0);
	], [
	  if test "$result" != ""; then
	    dnl * warning check isn't working
	    result=""
	    visible="unknown"
	    break
	  fi
	  result="`echo $type|sed 's/-/ /g'`"
	  visible="$result"
	])
      fi
    done
    CFLAGS="$old_CFLAGS"
  fi

  if test "$result" = ""; then
    for type in $order; do
      type="`echo $type|sed 's/-/ /g'`"
      AC_TRY_COMPILE([
	#include <sys/types.h>
	typedef $type $1;
      ],, [
	if test "$result" != ""; then
	  dnl * compiler allows redefining to anything
	  result=""
	  visible="unknown"
	  break
	fi
	result="$type"
	visible="$type"
      ])
    done
  fi

  if test "$result" = ""; then
    dnl * check with sizes

    dnl * older autoconfs don't include sys/types.h, so do it manually
    AC_TRY_RUN([
      #include <stdio.h>
      #include <sys/types.h>
      int main() {
	FILE *f=fopen("conftestval", "w");
	if (!f) exit(1);
	fprintf(f, "%d\n", sizeof($1));
	exit(0);
      }
    ], [
      size=`cat conftestval`
      rm -f conftestval

      for type in $order; do
        actype="ac_cv_sizeof_`echo $type|sed 's/-/_/g'`"
        if test "$size" = "`eval \"echo \\$$actype\"`"; then
	  result="`echo $type|sed 's/-/ /g'`"
	  visible="`expr $size \* 8`bit (using $result)"
	  break
	fi
      done
      if test "$result" = ""; then
        visible="`expr $size \* 8`bit (unknown type)"
      fi
    ])
  fi

  typeof_$1=$result
  AC_MSG_RESULT($visible)
])

dnl * off_t checks, try to make it 64bit
AC_DEFINE_UNQUOTED(_FILE_OFFSET_BITS, $preferred_off_t_bits,
  [If set to 64, enables 64bit off_t for some systems (eg. Linux, Solaris)])

AC_TYPEOF(off_t, long int long-long)
case "$typeof_off_t" in
  int)
    offt_max=INT_MAX
    uofft_fmt="u"
    AC_DEFINE(UOFF_T_INT,, Define if off_t is int)
    offt_bits=`expr 8 \* $ac_cv_sizeof_int`
    ;;
  long)
    offt_max=LONG_MAX
    uofft_fmt="lu"
    AC_DEFINE(UOFF_T_LONG,, Define if off_t is long)
    offt_bits=`expr 8 \* $ac_cv_sizeof_long`
    ;;
  "long long")
    offt_max=LLONG_MAX
    uofft_fmt="llu"
    AC_DEFINE(UOFF_T_LONG_LONG,, Define if off_t is long long)
    offt_bits=`expr 8 \* $ac_cv_sizeof_long_long`
    ;;
  *)
    AC_ERROR([Unsupported off_t type])
    ;;
esac

AC_DEFINE_UNQUOTED(OFF_T_MAX, $offt_max, Maximum value of off_t)
AC_DEFINE_UNQUOTED(PRIuUOFF_T, "$uofft_fmt", printf() format for uoff_t)

dnl * make sure size_t isn't signed. we'd probably work fine with it, but
dnl * it's more likely vulnerable to buffer overflows. Anyway, C99 specifies
dnl * that it's unsigned and only some old systems define it as signed.
AC_MSG_CHECKING([whether size_t is signed])
AC_TRY_RUN([
  #include <sys/types.h>
  int main() {
    /* return 0 if we're signed */
    exit((size_t)(int)-1 <= 0 ? 0 : 1);
  }
], [
  AC_MSG_RESULT(yes)

  echo
  echo "Your system's size_t is a signed integer, Dovecot isn't designed to"
  echo "support it. It probably works just fine, but it's less resistant to"
  echo "buffer overflows. If you're not worried about this and still want to"
  echo "compile Dovecot, set ignore_signed_size=1 environment."

  if test "$ignore_signed_size" = ""; then
    AC_ERROR([aborting])
  fi
  echo "..ignoring as requested.."
], [
  AC_MSG_RESULT(no)
])

AC_TYPEOF(ssize_t)
case "$typeof_ssize_t" in
  long)
    ssizet_max=LONG_MAX
    sizet_fmt="lu"
    ;;
  "long long")
    ssizet_max=LLONG_MAX
    sizet_fmt="llu"
    ;;
  *)
    dnl older systems didn't have ssize_t, default to int
    ssizet_max=INT_MAX
    sizet_fmt="u"

    if test "$typeof_ssize_t" = ""; then
      AC_DEFINE(size_t, unsigned int, Define to 'unsigned int' if you don't have it)
      AC_DEFINE(ssize_t, int, Define to 'int' if you don't have it)
    fi
    ;;
esac

AC_DEFINE_UNQUOTED(SSIZE_T_MAX, $ssizet_max, Maximum value of ssize_t)
AC_DEFINE_UNQUOTED(PRIuSIZE_T, "$sizet_fmt", printf() format for size_t)

AC_DEFUN(AC_CHECKTYPE2, [
  AC_MSG_CHECKING([for $1])
  AC_CACHE_VAL(i_cv_type_$1,
  [AC_TRY_COMPILE([
  #include <sys/types.h>
  $2],
  [$1 t;],
  i_cv_type_$1=yes,
  i_cv_type_$1=no,
  )])
  AC_MSG_RESULT($i_cv_type_$1)
])

AC_CHECKTYPE2(uintmax_t, [#include <inttypes.h>])
if test $i_cv_type_uintmax_t = yes; then
  AC_DEFINE(HAVE_UINTMAX_T,, Define if you have uintmax_t (C99 type))
fi

dnl use separate check, eg. Solaris 8 has uintmax_t but not uint_fast32_t
AC_CHECKTYPE2(uint_fast32_t, [#include <inttypes.h>])
if test $i_cv_type_uint_fast32_t = yes; then
  AC_DEFINE(HAVE_UINT_FAST32_T,, Define if you have uint_fast32_t (C99 type))
fi

AC_CHECKTYPE2(socklen_t, [#include <sys/socket.h>])
if test $i_cv_type_socklen_t = yes; then
  AC_DEFINE(HAVE_SOCKLEN_T,, Define to 'int' if you don't have socklen_t)
fi

dnl * do we have tm_gmtoff
AC_MSG_CHECKING([for tm_gmtoff])
AC_CACHE_VAL(i_cv_field_tm_gmtoff,
[AC_TRY_COMPILE([
#include <time.h>],
[struct tm *tm; return tm->tm_gmtoff;],
i_cv_field_tm_gmtoff=yes,
i_cv_field_tm_gmtoff=no,
)])
if test $i_cv_field_tm_gmtoff = yes; then
	AC_DEFINE(HAVE_TM_GMTOFF,, Define if you have struct tm->tm_gmtoff)
fi
AC_MSG_RESULT($i_cv_field_tm_gmtoff)

dnl * do we have struct iovec
AC_MSG_CHECKING([for struct iovec])
AC_CACHE_VAL(i_cv_struct_iovec,
[AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>],
[struct iovec *iovec;],
i_cv_struct_iovec=yes,
i_cv_struct_iovec=no)])

if test $i_cv_struct_iovec = yes; then
	AC_DEFINE(HAVE_STRUCT_IOVEC,, Define if you have struct iovec)
fi
AC_MSG_RESULT($i_cv_struct_iovec)

dnl * is dev_t an integer or something else?
AC_TRY_COMPILE([
  #include <sys/types.h>
  struct test { dev_t a; };
  static struct test t = { 0 };
],,, [
  AC_DEFINE(DEV_T_STRUCT,, Define if your dev_t is a structure instead of integer type)

  dnl we can't initialize structures, so don't warn about them either
  if test "x$ac_cv_prog_gcc" = "xyes"; then
    CFLAGS=`echo $CFLAGS|sed 's/ -W\b//'`
  fi
])

dnl * Do we have RLIMIT_AS?
AC_TRY_COMPILE([
  #include <sys/types.h>
  #include <sys/time.h>
  #include <sys/resource.h>
], [
  struct rlimit r;
  getrlimit(RLIMIT_AS, &r);
], [
  AC_DEFINE(HAVE_RLIMIT_AS,, Define if you have RLIMIT_AS for setrlimit())
])

dnl * Linux compatible mremap()
AC_MSG_CHECKING([Linux compatible mremap()])
AC_TRY_COMPILE([
  #include <unistd.h>
  #define __USE_GNU
  #include <sys/mman.h>
], [
  mremap(0, 0, 0, MREMAP_MAYMOVE);
], [
  AC_DEFINE(HAVE_LINUX_MREMAP,, Define if you have Linux-compatible mremap())
  AC_MSG_RESULT(yes)
], [
  AC_MSG_RESULT(no)
])

dnl * Solaris compatible sendfilev()
AC_MSG_CHECKING([Solaris compatible sendfilev()])
AC_CHECK_LIB(sendfile, sendfilev, [
  LIBS="$LIBS -lsendfile"
  AC_DEFINE(HAVE_SOLARIS_SENDFILEV,, Define if you have Solaris-compatible sendfilev())
  AC_MSG_RESULT(yes)
], [
  AC_MSG_RESULT(no)

  dnl * Linux compatible sendfile() - don't check if Solaris one was found.
  dnl * This seems to pass with Solaris for some reason..
  AC_MSG_CHECKING([Linux compatible sendfile()])
  AC_TRY_COMPILE([
    #undef _FILE_OFFSET_BITS
    #include <sys/types.h>
    #include <sys/socket.h>
    #include <sys/sendfile.h>
  ], [
    sendfile(0, 0, (void *) 0, 0);
  ], [
    AC_DEFINE(HAVE_LINUX_SENDFILE,, Define if you have Linux-compatible sendfile())
    AC_MSG_RESULT(yes)
  ], [
    AC_MSG_RESULT(no)
  ])

  dnl * FreeBSD compatible sendfile()
  AC_MSG_CHECKING([FreeBSD compatible sendfile()])
  AC_TRY_COMPILE([
    #include <sys/types.h>
    #include <sys/socket.h>
    #include <sys/uio.h>
  ], [
    struct sf_hdtr hdtr;
    sendfile(0, 0, 0, 0, &hdtr, (void *) 0, 0);
  ], [
    AC_DEFINE(HAVE_FREEBSD_SENDFILE,, Define if you have FreeBSD-compatible sendfile())
    AC_MSG_RESULT(yes)
  ], [
    AC_MSG_RESULT(no)
  ])
])

dnl ***
dnl *** va_copy checks (from GLIB)
dnl ***

AC_CACHE_CHECK([for an implementation of va_copy()],lib_cv_va_copy,[
	AC_TRY_RUN([
	#include <stdarg.h>
	void f (int i, ...) {
	va_list args1, args2;
	va_start (args1, i);
	va_copy (args2, args1);
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
	}],
	[lib_cv_va_copy=yes],
	[lib_cv_va_copy=no],
	[])
])
AC_CACHE_CHECK([for an implementation of __va_copy()],lib_cv___va_copy,[
	AC_TRY_RUN([
	#include <stdarg.h>
	void f (int i, ...) {
	va_list args1, args2;
	va_start (args1, i);
	__va_copy (args2, args1);
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
	}],
	[lib_cv___va_copy=yes],
	[lib_cv___va_copy=no],
	[])
])

if test "x$lib_cv_va_copy" = "xyes"; then
  va_copy_func=va_copy
else if test "x$lib_cv___va_copy" = "xyes"; then
  va_copy_func=__va_copy
fi
fi

if test -n "$va_copy_func"; then
  AC_DEFINE_UNQUOTED(VA_COPY,$va_copy_func,[A 'va_copy' style function])
fi

AC_CACHE_CHECK([whether va_lists can be copied by value],lib_cv_va_val_copy,[
	AC_TRY_RUN([
	#include <stdarg.h>
	void f (int i, ...) {
	va_list args1, args2;
	va_start (args1, i);
	args2 = args1;
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
	}],
	[lib_cv_va_val_copy=yes],
	[lib_cv_va_val_copy=no],
	[])
])

if test "x$lib_cv_va_val_copy" = "xno"; then
  AC_DEFINE(VA_COPY_AS_ARRAY,1, ['va_lists' cannot be copies as values])
fi

dnl **
dnl ** SSL
dnl **

have_ssl=no

if test $want_gnutls = yes; then
	AC_CHECK_LIB(gnutls, gnutls_global_init, [
		AC_CHECK_HEADERS(gnutls/gnutls.h, [
			AC_DEFINE(HAVE_GNUTLS,, Build with GNUTLS support)
			SSL_LIBS="-lgnutls -lgcrypt"
			AC_SUBST(SSL_LIBS)
			have_ssl="yes (GNUTLS)"
			have_gnutls=yes
		])
	],, -lgcrypt)
fi

if test "$want_openssl" = "yes" -a "$have_ssl" = "no"; then
	AC_CHECK_LIB(ssl, SSL_read, [
		AC_CHECK_HEADERS(openssl/ssl.h openssl/err.h, [
			AC_DEFINE(HAVE_OPENSSL,, Build with OpenSSL support)
			SSL_LIBS="-lssl -lcrypto"
			AC_SUBST(SSL_LIBS)
			have_ssl="yes (OpenSSL)"
			have_openssl=yes
		])
	],, -lcrypto)
fi

if test "$have_ssl" != "no"; then
	AC_DEFINE(HAVE_SSL,, Build with SSL/TLS support)
fi

dnl **
dnl ** shadow/pam support
dnl **

need_crypt=no
auths=""

if test $want_passwd = yes; then
	need_crypt=yes
        AC_DEFINE(USERINFO_PASSWD,, Build with passwd support)
	auths="$auths passwd"
fi

if test $want_passwd_file = yes; then
	need_crypt=yes
        AC_DEFINE(USERINFO_PASSWD_FILE,, Build with passwd-file support)
	auths="$auths passwd-file"
fi

if test $want_shadow = yes; then
	AC_CHECK_FUNC(getspnam, [
		need_crypt=yes
		AC_DEFINE(USERINFO_SHADOW,, Build with shadow support)
		auths="$auths shadow"
	])
fi

if test $want_pam = yes; then
	AC_CHECK_LIB(pam, pam_start, [
		have_pam=no
		AC_CHECK_HEADER(security/pam_appl.h, [
			AC_DEFINE(HAVE_SECURITY_PAM_APPL_H,,
				  Define if you have security/pam_appl.h)
			have_pam=yes
		])

		AC_CHECK_HEADER(pam/pam_appl.h, [
			AC_DEFINE(HAVE_PAM_PAM_APPL_H,,
				  Define if you have pam/pam_appl.h)
			have_pam=yes
		])

		if test "$have_pam" = "yes"; then
			USERINFO_LIBS="$USERINFO_LIBS -lpam"
			AC_DEFINE(USERINFO_PAM,, Build with PAM support)
			auths="$auths pam"

			AC_CHECK_LIB(pam, pam_setcred, [
				AC_DEFINE(HAVE_PAM_SETCRED,,
					  Define if you have pam_setcred())
			])
		fi
	])
fi

if test $want_vpopmail = yes; then
	vpopmail_home="`echo ~vpopmail`"
	vpop_libdeps="$vpopmail_home/etc/lib_deps"

	AC_MSG_CHECKING([for vpopmail configuration at $vpop_libdeps])
	if test -f $vpop_libdeps; then
		need_crypt=yes
		VPOPMAIL_CFLAGS="`cat $vpopmail_home/etc/inc_deps` $CFLAGS"
		VPOPMAIL_LIBS="`cat $vpop_libdeps`"
		AC_DEFINE(USERINFO_VPOPMAIL,, Build with vpopmail support)
		auths="$auths vpopmail"
		AC_MSG_RESULT(found)
	else
		want_vpopmail=no
		AC_MSG_RESULT(not found)
	fi
fi

AC_SUBST(VPOPMAIL_CFLAGS)
AC_SUBST(VPOPMAIL_LIBS)

if test $want_cyrus_sasl2 = yes; then
	AC_CHECK_LIB(sasl2, sasl_server_start, [
		AC_CHECK_HEADER(sasl/sasl.h, [
			AC_DEFINE(USE_CYRUS_SASL2,,
				  Define if you want to use Cyrus SASL library)
			SASL_LIBS="-lsasl2"
		])
	])
fi

AC_SUBST(SASL_LIBS)

if test $need_crypt = yes; then
	AC_CHECK_LIB(crypt, crypt, [
		USERINFO_LIBS="$USERINFO_LIBS -lcrypt"
	], [
		AC_CHECK_FUNC(crypt,, [
			AC_ERROR([crypt() wasn't found])
		])
	])
fi

AC_SUBST(USERINFO_LIBS)

dnl **
dnl ** Index file compatibility flags
dnl **

dnl * currently just checking for endianess

AC_C_BIGENDIAN

if test $ac_cv_c_bigendian = yes; then
	flags=0

else
	flags=1
fi

AC_DEFINE_UNQUOTED(MAIL_INDEX_COMPAT_FLAGS, $flags, Index file compatibility flags)

dnl **
dnl ** IPv6 support
dnl **

if test "x$want_ipv6" = "xyes"; then
	AC_MSG_CHECKING([for IPv6])
	AC_CACHE_VAL(i_cv_type_in6_addr,
	[AC_TRY_COMPILE([
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <netdb.h>
	#include <arpa/inet.h>],
	[struct in6_addr i;],
	i_cv_type_in6_addr=yes,
	i_cv_type_in6_addr=no,
	)])
	if test $i_cv_type_in6_addr = yes; then
		AC_DEFINE(HAVE_IPV6,, Build with IPv6 support)
	fi
	AC_MSG_RESULT($i_cv_type_in6_addr)
fi

dnl **
dnl ** capabilities
dnl **

capability="IMAP4rev1 SORT THREAD=REFERENCES"
AC_DEFINE_UNQUOTED(CAPABILITY_STRING, "$capability", IMAP capabilities)

dnl **
dnl ** register the storage classes
dnl **

STORAGE="maildir mbox"
file="src/lib-storage/register/mail-storage-register.c"

echo "/* this file is generated by configure */" > $file
echo '#include "lib.h"' >> $file
echo '#include "mail-storage.h"' >> $file
for storage in $STORAGE; do
	echo "extern struct mail_storage ${storage}_storage;" >> $file
done
echo "void mail_storage_register_all(void) {" >> $file
for storage in $STORAGE; do
	echo "mail_storage_class_register(&${storage}_storage);" >> $file
done
echo "}" >> $file

CFLAGS="$CFLAGS $EXTRA_CFLAGS"

AC_OUTPUT(
Makefile
doc/Makefile
src/Makefile
src/lib/Makefile
src/lib-charset/Makefile
src/lib-imap/Makefile
src/lib-index/Makefile
src/lib-index/maildir/Makefile
src/lib-index/mbox/Makefile
src/lib-mail/Makefile
src/lib-storage/Makefile
src/lib-storage/index/Makefile
src/lib-storage/index/maildir/Makefile
src/lib-storage/index/mbox/Makefile
src/lib-storage/subscription-file/Makefile
src/lib-storage/register/Makefile
src/auth/Makefile
src/imap/Makefile
src/login/Makefile
src/master/Makefile
stamp.h)

echo
echo "Install prefix ............. : $prefix"
echo "File offsets ............... : ${offt_bits}bit"
echo "Building with auth modules . :$auths"
echo "Building with SSL support .. : $have_ssl"
echo "Building with IPv6 support . : $want_ipv6"