dnl  configure.in for linux strongSwan
dnl  Copyright (C) 2006 Martin Willi
dnl  Hochschule fuer Technik Rapperswil
dnl 
dnl  This program is free software; you can redistribute it and/or modify it
dnl  under the terms of the GNU General Public License as published by the
dnl  Free Software Foundation; either version 2 of the License, or (at your
dnl  option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
dnl 
dnl  This program is distributed in the hope that it will be useful, but
dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
dnl  for more details.

dnl ===========================
dnl  initialize & set some vars
dnl ===========================

AC_INIT(strongSwan,4.0.1)
AM_INIT_AUTOMAKE
AC_C_BIGENDIAN
AC_SUBST(ipsecdir, '${libexecdir}/ipsec')
AC_SUBST(confdir, '${sysconfdir}')
AC_SUBST(piddir, '/var/run')

dnl =================================
dnl  check --enable-xxx & --with-xxx
dnl =================================


AC_ARG_WITH(
    [default-pkcs11],
    AS_HELP_STRING([--with-default-pkcs11=lib],[set the default PKCS11 library other than /usr/lib/opensc-pkcs11.so]),
    [AC_DEFINE_UNQUOTED(PKCS11_DEFAULT_LIB, "$withval")],
    [AC_DEFINE_UNQUOTED(PKCS11_DEFAULT_LIB, "/usr/lib/opensc-pkcs11.so")]
)

AC_ARG_WITH(
    [random-device],
    AS_HELP_STRING([--with-random-device=dev],[set the device for real random data other than /dev/random]),
    [AC_DEFINE_UNQUOTED(DEV_RANDOM, "$withval")],
    [AC_DEFINE_UNQUOTED(DEV_RANDOM, "/dev/random")]
)

AC_ARG_WITH(
    [urandom-device],
    AS_HELP_STRING([--with-urandom-device=dev],[set the device for pseudo random data other than /dev/urandom]),
    [AC_DEFINE_UNQUOTED(DEV_URANDOM, "$withval")],
    [AC_DEFINE_UNQUOTED(DEV_URANDOM, "/dev/urandom")]
)

AC_ARG_ENABLE(
    [http],
    AS_HELP_STRING([--enable-http],[enable OCSP and fetching of Certificates and CRLs over HTTP (default is NO). Requires libcurl.]),
    http=true
    AC_DEFINE(LIBCURL)
)
AM_CONDITIONAL(USE_LIBCURL, test x$http = xtrue)

AC_ARG_ENABLE(
    [ldap],
    AS_HELP_STRING([--enable-ldap],[enable fetching of CRLs from LDAP (default is NO). Requires openLDAP.]),
    ldap=true
    AC_DEFINE(LDAP_VER, 3)
)
AM_CONDITIONAL(USE_LDAP, test x$ldap = xtrue)

AC_ARG_ENABLE(
    [smartcard],
    AS_HELP_STRING([--enable-smartcard],[enable smartcard support (default is NO).]),
    smartcard=true
    AC_DEFINE(SMARTCARD)
)
AM_CONDITIONAL(USE_SMARTCARD, test x$smartcard = xtrue)

AC_ARG_ENABLE(
    [leak-detective],
    AS_HELP_STRING([--enable-leak-detective],[enable malloc hooks to find memory leaks (default is NO).]),
    leak_detective=true
)
AM_CONDITIONAL(USE_LEAK_DETECTIVE, test x$leak_detective = xtrue)

dnl =========================
dnl  check required programs
dnl =========================

AC_PROG_INSTALL
AC_PROG_LIBTOOL
AC_PROG_LEX
AC_PROG_YACC
AC_PROG_CC(intel)
AC_PATH_PROG([GPERF], [gperf], [], [$PATH:/bin:/usr/bin:/usr/local/bin])
AC_PATH_PROG([PERL], [perl], [], [$PATH:/bin:/usr/bin:/usr/local/bin])

dnl ==========================
dnl  check required libraries
dnl ==========================

AC_HAVE_LIBRARY([gmp],,[AC_MSG_ERROR([GNU Multi Precision library gmp not found])])	
if test "$ldap" = "true"; then
    AC_HAVE_LIBRARY([ldap],,[AC_MSG_ERROR([LDAP enabled, but library ldap not found])])
    AC_HAVE_LIBRARY([lber],,[AC_MSG_ERROR([LDAP enabled, but library lber not found])])
fi
if test "$http" = "true"; then
    AC_HAVE_LIBRARY([curl],,[AC_MSG_ERROR([HTTP enabled, but library curl not found])])
fi


dnl =============================
dnl  check required header files
dnl =============================


AC_MSG_CHECKING([gmp.h version >= 4.1.4])
AC_TRY_COMPILE(
    [#include "gmp.h"],
    [
        #if (__GNU_MP_VERSION*100 +  __GNU_MP_VERSION_MINOR*10 + __GNU_MP_VERSION_PATCHLEVEL) < 414
            #error bad gmp
        #endif
    ], 
    [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); AC_MSG_ERROR([No usable gmp.h found!])]
)
if test "$ldap" = "true"; then
    AC_CHECK_HEADER([ldap.h],,[AC_MSG_ERROR([LDAP enabled, but ldap.h not found!])])
fi
if test "$http" = "true"; then
    AC_CHECK_HEADER([curl/curl.h],,[AC_MSG_ERROR([HTTP enabled, but curl.h not found!])])
fi

dnl ==============================
dnl  build Makefiles
dnl ==============================

AC_OUTPUT(
	Makefile
	src/Makefile
	src/libstrongswan/Makefile
	src/libcrypto/Makefile
	src/libfreeswan/Makefile
	src/pluto/Makefile
	src/whack/Makefile
	src/charon/Makefile
	src/stroke/Makefile
	src/ipsec/Makefile
	src/starter/Makefile
	src/_updown/Makefile
	src/_updown_espmark/Makefile
	src/_copyright/Makefile
	src/openac/Makefile
	src/scepclient/Makefile
)