dnl $Id: configure.ac 21635 2006-01-11 21:52:17Z leeh $
dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.57)
AC_COPYRIGHT([$Id: configure.ac 21635 2006-01-11 21:52:17Z leeh $])
AC_INIT([ratbox-respond],[stable])

AC_CONFIG_HEADER(setup.h)
AC_PREFIX_DEFAULT(.)
AC_GNU_SOURCE

AC_PROG_CC
AC_PROG_INSTALL

AC_PATH_PROG(RM, rm)
AC_PATH_PROG(CP, cp)
AC_PATH_PROG(MV, mv)
AC_PATH_PROG(TOUCH, touch)

AC_LANG(C)

AC_HEADER_STDC

CPPFLAGS="-I /usr/include"
LIBS="-L /usr/lib"

dnl OpenSSL support
AC_MSG_CHECKING(for OpenSSL)
AC_ARG_ENABLE(openssl,
[AC_HELP_STRING([--enable-openssl[=DIR]],[Enable OpenSSL support (DIR optional).])],
[cf_enable_openssl=$enableval],
[cf_enable_openssl="auto"])

if test "$cf_enable_openssl" != "no" ; then
	cf_openssl_basedir=""
	if test "$cf_enable_openssl" != "auto" &&
	test "$cf_enable_openssl" != "yes" ; then
		dnl Support for --enable-openssl=/some/place
		cf_openssl_basedir="`echo ${cf_enable_openssl} | sed 's/\/$//'`"
	else
	dnl Do the auto-probe here.  Check some common directory paths.
		for dirs in /usr/local/ssl /usr/pkg /usr/local \
		/usr/local/openssl ; do
			if test -f "${dirs}/include/openssl/opensslv.h" ; then
				cf_openssl_basedir="${dirs}"
			break
			fi
		done
		unset dirs
	fi
	dnl Now check cf_openssl_found to see if we found anything.
	if test ! -z "$cf_openssl_basedir"; then
		if test -f "${cf_openssl_basedir}/include/openssl/opensslv.h" ; then
			SSL_INCLUDES="-I${cf_openssl_basedir}/include"
			SSL_LIBS="-L${cf_openssl_basedir}/lib"
		else
		dnl OpenSSL wasn't found in the directory specified.  Naughty
		dnl administrator...
		cf_openssl_basedir=""
		fi
	else
	dnl Check for stock FreeBSD 4.x and 5.x systems, since their files
	dnl are in /usr/include and /usr/lib.  In this case, we don't want to
	dnl change INCLUDES or LIBS, but still want to enable OpenSSL.
	dnl We can't do this check above, because some people want two versions
	dnl of OpenSSL installed (stock FreeBSD 4.x/5.x and /usr/local/ssl)
	dnl and they want /usr/local/ssl to have preference.
		if test -f "/usr/include/openssl/opensslv.h" ; then
			cf_openssl_basedir="/usr"
		fi
	fi

	dnl If we have a basedir defined, then everything is okay.  Otherwise,
	dnl we have a problem.
	if test ! -z "$cf_openssl_basedir"; then
		AC_MSG_RESULT($cf_openssl_basedir)
		cf_enable_openssl="yes"
	else
		AC_MSG_RESULT([not found. Specify a correct path?])
		cf_enable_openssl="no"
	fi
	unset cf_openssl_basedir
else
	dnl If --disable-openssl was specified
	AC_MSG_RESULT(disabled)
	AC_MSG_ERROR([Need openssl to compile ratbox-respond])
fi

save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $SSL_INCLUDES"
save_LIBS="$LIBS"
LIBS="$LIBS $SSL_LIBS"
if test "$cf_enable_openssl" != no; then
	dnl Check OpenSSL version (must be 0.9.6 or above!)
	AC_MSG_CHECKING(for OpenSSL 0.9.6 or above)
	AC_RUN_IFELSE(
		AC_LANG_PROGRAM(
	    	[#include <openssl/opensslv.h>
		#include <stdlib.h>],
		[[if (OPENSSL_VERSION_NUMBER >= 0x00906000)
		exit(0); else exit(1);]]),
	cf_openssl_version_ok=yes,
	cf_openssl_version_ok=no,
	cf_openssl_version_ok=no)

	if test "$cf_openssl_version_ok" = yes; then
		AC_MSG_RESULT(found)

		dnl Do all the HAVE_LIBCRYPTO magic -- and check for ciphers
		CPPFLAGS="$CPPFLAGS $SSL_LIBS"
		AC_CHECK_LIB(crypto, RSA_free)
		SSL_LIBS="$SSL_LIBS -lcrypto"
		SSL_SRCS_ENABLE='$(SSL_SRCS)'
	else
	        AC_MSG_RESULT(no - OpenSSL support disabled)
		AC_MSG_ERROR([Need openssl to compile ratbox-respond])
	fi
else
	AC_MSG_ERROR([Need openssl development files to compile ratbox-respond])
fi

CPPFLAGS="$save_CPPFLAGS"
LIBS="$save_LIBS"

dnl End OpenSSL detection

AC_SUBST(CFLAGS)
AC_SUBST(CPPFLAGS)
AC_SUBST(LIBS)

AC_SUBST(SSL_SRCS_ENABLE)
AC_SUBST(SSL_INCLUDES)
AC_SUBST(SSL_LIBS)

AC_CONFIG_FILES(Makefile)

AC_OUTPUT