#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_INIT(eAthena)
AC_REVISION($Revision$)
AC_PREREQ([2.61])
AC_CONFIG_SRCDIR([src/common/cbasetypes.h])
AC_CONFIG_FILES([Makefile src/common/Makefile])
AC_CONFIG_FILES([src/char/Makefile src/login/Makefile src/ladmin/Makefile])
AC_CONFIG_FILES([src/char_sql/Makefile src/login_sql/Makefile src/txt-converter/Makefile])
AC_CONFIG_FILES([src/map/Makefile src/plugins/Makefile src/tool/Makefile])


#
# Enable/disable MySql and optionally specify the path (optional library)
#
AC_ARG_WITH(
	[mysql],
	AC_HELP_STRING(
		[--with-mysql=@<:@ARG@:>@],
		[use MySQL client library @<:@default=yes@:>@, optionally specify path to the mysql_config executable]
	),
	[
		if test "$withval" = "no" ; then
			want_mysql="no"
		elif test "$withval" = "yes" ; then
			want_mysql="yes"
		else
			want_mysql="yes"
			MYSQL_CONFIG_HOME="$withval"
		fi
	],
	[want_mysql="yes"]
)


#
# Enable/disable PCRE and optionally specify the path (optional library)
#
AC_ARG_WITH(
	[pcre],
	AC_HELP_STRING(
		[--with-pcre=@<:@ARG@:>@],
		[use PCRE library @<:@default=yes@:>@, optionally specify the root directory path of pcre installation]
	),
	[
		if test "$withval" = "no" ; then
			want_pcre="no"
		elif test "$withval" = "yes" ; then
			want_pcre="yes"
		else
			want_pcre="yes"
			PCRE_HOME="$withval"
		fi
	],
	[want_pcre="yes"]
)


#
# Specify the path of the zlib library (required library)
#
AC_ARG_WITH(
	[zlib],
	AC_HELP_STRING(
		[--with-zlib=DIR],
		[root directory path of zlib installation (defaults to /usr/local or /usr if not found in /usr/local)]
	),
	[
		test -n "$withval" && ZLIB_HOME="$withval"
	],
	[
		ZLIB_HOME=/usr/local
		test ! -f "${ZLIB_HOME}/include/zlib.h" && ZLIB_HOME=/usr
	]
)



###############################################################################
# Checks for programs and types.

AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_CPP
AC_LANG([C])


CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wno-sign-compare"
CPPFLAGS="$CPPFLAGS -I../common"


AC_C_BIGENDIAN(
	[AC_MSG_ERROR([[bigendian is not supported... stopping]])],
	,
	[AC_MSG_WARN([[unable to determine endianess, only little endian is supported]])]
)


AC_MSG_CHECKING([whether pointers can be stored in ints (old code)])
pointers_fit_in_ints="no"
AC_COMPILE_IFELSE(
	[AC_LANG_PROGRAM([[int hw[(sizeof(int) == sizeof(void *))];]])],
	[pointers_fit_in_ints="yes"],
	[]
)
if test "$pointers_fit_in_ints" = "no" ; then
	CFLAGS="$CFLAGS -m32"
	AC_COMPILE_IFELSE(
		[AC_LANG_PROGRAM([[int hw[(sizeof(int) == sizeof(void *))];]])],
		[pointers_fit_in_ints="yes (with -m32)"],
		[]
	)
fi
AC_MSG_RESULT($pointers_fit_in_ints)
if test "$pointers_fit_in_ints" = "no" ; then
	AC_MSG_ERROR([pointers cannot be stored in ints, required for old code... stopping])
fi


AC_MSG_CHECKING([whether $CC supports -Wno-unused-parameter])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wno-unused-parameter"
AC_COMPILE_IFELSE(
	[int foo;],
	[AC_MSG_RESULT([yes])],
	[
		AC_MSG_RESULT([no])
		CFLAGS="$OLD_CFLAGS"
	]
)


AC_MSG_CHECKING([whether $CC supports -Wno-pointer-sign])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wno-pointer-sign"
AC_COMPILE_IFELSE(
	[int foo;],
	[AC_MSG_RESULT([yes])],
	[
		AC_MSG_RESULT([no])
		CFLAGS="$OLD_CFLAGS"
	]
)


###############################################################################
# Checks for libraries and header files.



dnl
dnl Check MySQL library (optional)
dnl

MYSQL_VERSION=""
MYSQL_CFLAGS=""
MYSQL_LIBS=""

if test "$want_mysql" = "no" ; then
	AC_MSG_NOTICE([ignoring MySQL (optional)])
else
	if test -z "$MYSQL_CONFIG_HOME"; then
		AC_PATH_PROG([MYSQL_CONFIG_HOME], [mysql_config], [no])
	fi

	AC_MSG_CHECKING([MySQL library (optional)])
	if test "$MYSQL_CONFIG_HOME" != "no" ; then
		HAVE_MYSQL="yes"
		MYSQL_VERSION="`$MYSQL_CONFIG_HOME --version`"
		MYSQL_CFLAGS="`$MYSQL_CONFIG_HOME --cflags`"
		MYSQL_LIBS="`$MYSQL_CONFIG_HOME --libs`"
		AC_MSG_RESULT([yes ($MYSQL_VERSION)])
		if test -n "`$MYSQL_CONFIG_HOME --libs | grep -i '\-m64'`"; then
			AC_MSG_ERROR([$MYSQL_CONFIG_HOME reported that MySQL was compiled in 64bit mode, please specify a 32bit distribution of MySQL with --with-mysql=<path>... stopping])
		fi
	else
		AC_MSG_RESULT([no])
		AC_MSG_NOTICE([disabling MySQL (optional)])
	fi
fi

AC_SUBST([HAVE_MYSQL])
AC_SUBST([MYSQL_VERSION])
AC_SUBST([MYSQL_CFLAGS])
AC_SUBST([MYSQL_LIBS])



dnl
dnl Check PCRE libraries (optional)
dnl

##TODO PCRE version
PCRE_LIBS=""
PCRE_CFLAGS=""

if test "$want_pcre" = "no" ; then
	AC_MSG_NOTICE([ignoring PCRE (optional)])
else
	if test -z "$PCRE_HOME" ; then
		AC_CHECK_LIB([pcre], [pcre_study], [HAVE_PCRE="yes"], [])
		if test "$HAVE_PCRE" = "yes" ; then
			PCRE_LIBS="-lpcre"
		fi
	else
		PCRE_OLD_LDFLAGS="$LDFLAGS" ; LDFLAGS="$LDFLAGS -L$PCRE_HOME/lib"
		PCRE_OLD_CPPFLAGS="$CPPFLAGS" ; CPPFLAGS="$CPPFLAGS -I$PCRE_HOME/include"
		AC_CHECK_LIB(pcre, pcre_compile, [HAVE_PCRE="yes"], [])
		CPPFLAGS="$PCRE_OLD_CPPFLAGS"
		LDFLAGS="$PCRE_OLD_LDFLAGS"
		if test "$HAVE_PCRE" = "yes" ; then
			PCRE_LIBS="-L$PCRE_HOME/lib -lpcre"
			test -d "$PCRE_HOME/include" && PCRE_CFLAGS="-I$PCRE_HOME/include"
		fi
	fi
	AC_MSG_CHECKING([PCRE library (optional)])
	if test "$HAVE_PCRE" = "yes" ; then
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
		AC_MSG_NOTICE([disabling PCRE (optional)])
	fi
fi

AC_SUBST([HAVE_PCRE])
AC_SUBST([PCRE_LIBS])
AC_SUBST([PCRE_CFLAGS])



dnl
dnl zlib library (required)
dnl

if test -n "${ZLIB_HOME}" ; then
	LDFLAGS="$LDFLAGS -L${ZLIB_HOME}/lib"
	CPPFLAGS="$CPPFLAGS -I${ZLIB_HOME}/include"
fi
AC_CHECK_LIB([z], [inflateEnd], ,[AC_MSG_ERROR([zlib library not found, please specify the correct path with --with-zlib=DIR... stopping])])
AC_CHECK_HEADER([zlib.h], , [AC_MSG_ERROR([zlib header not found, please specify the correct path with --with-zlib=DIR... stopping])])



dnl
dnl math library (required)
dnl

AC_CHECK_LIB([m], [sqrt], [], [AC_MSG_ERROR([math library not found... stopping])])



dnl
dnl Host specific stuff
dnl

AC_MSG_CHECKING([host OS])
host_os="`uname`"
AC_MSG_RESULT([$host_os])
fd_setsize=""
DLLEXT=".so"
case $host_os in
Solaris* )
	LIBS="$LIBS -lsocket -lnsl -ldl"
	;;
Linux* )
	LIBS="$LIBS -ldl"
	;;
FreeBSD*)
	CPPFLAGS="$CPPFLAGS -D__FREEBSD__"
	;;
NetBSD*)
	CPPFLAGS="$CPPFLAGS -D__NETBSD__"
	;;
CYGWIN*)
	CPPFLAGS="$CPPFLAGS -DFD_SETSIZE=4096 -DCYGWIN"
	fd_setsize="done"
	DLLEXT=".dll"
	;;
esac
AC_SUBST([DLLEXT])

AC_MSG_CHECKING([for MinGW])
if test -n "`$CC --version | grep -i mingw`" ; then
	AC_MSG_RESULT([yes])
	CPPFLAGS="$CPPFLAGS -DMINGW"
	if test -z "$fd_setsize" ; then
		CPPFLAGS="$CPPFLAGS -DFD_SETSIZE=4096"
	fi
	LIBS="$LIBS -lws2_32"
else
	AC_MSG_RESULT([no])
fi



###############################################################################
AC_OUTPUT