AC_INIT([libisoburn], [0.5.7], [http://libburnia-project.org])
AC_PREREQ([2.50])
dnl AC_CONFIG_HEADER([config.h])	

AC_CANONICAL_HOST
AC_CANONICAL_TARGET

LIBBURNIA_SET_FLAGS

AM_INIT_AUTOMAKE([subdir-objects])

dnl Hint: Search list for version code aspects:
dnl       /AC_INIT(
dnl       /ISOBURN_.*_VERSION
dnl       /LT_.*
dnl       /LIB.*_REQUIRED

dnl The API version codes are defined in libisoburn/libisoburn.h
dnl #define  isoburn_header_version_*
dnl configure.ac only rules the libtool revision numbering about
dnl LT_CURREN, LT_AGE, LT_REVISION where SONAME becomes LT_CURRENT - LT_AGE
dnl 
dnl These three are only copies to provide libtool with unused LT_RELEASE
ISOBURN_MAJOR_VERSION=0
ISOBURN_MINOR_VERSION=5
ISOBURN_MICRO_VERSION=7

dnl ISOBURN_VERSION=$ISOBURN_MAJOR_VERSION.$ISOBURN_MINOR_VERSION.$ISOBURN_MICRO_VERSION
 
AC_SUBST(ISOBURN_MAJOR_VERSION)
AC_SUBST(ISOBURN_MINOR_VERSION)
AC_SUBST(ISOBURN_MICRO_VERSION)
dnl AC_SUBST(ISOBURN_VERSION)

dnl Libtool versioning
dnl Generate libisoburn.so.1.x.y
dnl SONAME will become LT_CURRENT - LT_AGE
dnl 
dnl ts B00504
dnl ### This is the release version 0.5.6 = libisoburn.so.1.45.0
dnl This is the development version after above stable release
dnl LT_CURRENT++, LT_AGE++ have not happened yet.
dnl ### LT_CURRENT++, LT_AGE++ has happened meanwhile.
dnl
dnl SONAME = 46 - 45 = 1 . Library name = libisoburn.so.1.45.0
LT_RELEASE=$ISOBURN_MAJOR_VERSION.$ISOBURN_MINOR_VERSION
LT_CURRENT=46
LT_AGE=45
LT_REVISION=0
LT_CURRENT_MINUS_AGE=`expr $LT_CURRENT - $LT_AGE`

AC_SUBST(LT_RELEASE)
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)
AC_SUBST(LT_CURRENT_MINUS_AGE)

AC_PREFIX_DEFAULT([/usr/local])
test "$prefix" = "NONE" && prefix=$ac_default_prefix

AM_MAINTAINER_MODE

AM_PROG_CC_C_O
AC_C_CONST
AC_C_INLINE
AC_C_BIGENDIAN

dnl Large file support
AC_SYS_LARGEFILE
AC_FUNC_FSEEKO
AC_CHECK_FUNC([fseeko])
if test ! $ac_cv_func_fseeko; then
   AC_ERROR([Libburn requires largefile support.])
fi

if test x$LIBISOBURN_OLD_ICONV_CONFIGURE = x
then

dnl ts B00410 : To detect the need for -liconv and const argument of iconv()
    LIBBURNIA_CHECK_ICONV

else

dnl Outdated: produces double -liconv and warnings about parameter mismatch
dnl If iconv(3) is in an extra lib, then it gets added to variable LIBS.
dnl If not, then no -liconv will be added.
    AC_CHECK_LIB(iconv, iconv, , )
dnl GNU iconv has no function iconv() but libiconv() and a macro iconv()
    AC_CHECK_LIB(iconv, libiconv, , )

fi

AC_PROG_LIBTOOL
AC_SUBST(LIBTOOL_DEPS)
LIBTOOL="$LIBTOOL --silent"

AC_PROG_INSTALL

AC_CHECK_HEADERS()

THREAD_LIBS=-lpthread
AC_SUBST(THREAD_LIBS)

TARGET_SHIZZLE
AC_SUBST(ARCH)
AC_SUBST(LIBBURNIA_PKGCONFDIR)
AC_SUBST(LIBBURN_ARCH_LIBS)


dnl Determine target directory for libisoburn-*.pc
dnl Important: Must be performed _after_ TARGET_SHIZZLE
dnl
LIBBURNIA_SET_PKGCONFIG


AC_ARG_ENABLE(libreadline,
[  --enable-libreadline    Enable use of libreadline by xorriso, default=yes],
               , enable_libreadline=yes)
if test x$enable_libreadline = xyes; then
dnl Check whether there is readline-devel and readline-runtime.
dnl If not, erase this macro which would enable use of readline(),add_history()
    READLINE_DEF="-DXorriso_with_readlinE"

    if test x$XORRISO_OLD_READLINE_CONFIGURE = x
    then

dnl ts B00411 : To disable readline if not all needed functions are present
        LIBBURNIA_ASSERT_READLINE

    else
dnl The empty yes case obviously causes -lreadline to be linked
        AC_CHECK_HEADER(readline/readline.h, AC_CHECK_LIB(readline, readline, , READLINE_DEF= ), READLINE_DEF= )
dnl The X= in the yes case prevents that -lreadline gets linked twice
        AC_CHECK_HEADER(readline/history.h, AC_CHECK_LIB(readline, add_history, X= , READLINE_DEF= ), READLINE_DEF= )
    fi
else
    READLINE_DEF=
fi
AC_SUBST(READLINE_DEF)

dnl ts A90329
dnl ACL and xattr do not need to be enabled in libisoburn or xorriso source
dnl but without AC_CHECK_LIB() xorriso will not be linked with -lacl .
dnl On my Linux this does work with an ACL enabled libisofs but in general
dnl it seems not be right.
dnl So for now it seems to be best to do the same configuration for libisoburn
dnl and xorriso as for libisofs.
 
AC_ARG_ENABLE(libacl,
[  --enable-libacl         Enable use of libacl by libisofs, default=yes],
               , enable_libacl=yes)
if test x$enable_libacl = xyes; then
dnl Check whether there is libacl-devel and libacl-runtime.
dnl If not, erase this macro which would enable use of acl_to_text and others
    LIBACL_DEF="-DLibisofs_with_aaip_acL"
dnl The empty yes case obviously causes -lacl to be linked
    AC_CHECK_HEADER(sys/acl.h, AC_CHECK_LIB(acl, acl_to_text, , LIBACL_DEF= ), LIBACL_DEF= )
else
    LIBACL_DEF=
fi
AC_SUBST(LIBACL_DEF)


AC_ARG_ENABLE(xattr,
[  --enable-xattr          Enable use of xattr by libisofs, default=yes],
               , enable_xattr=yes)
if test x$enable_xattr = xyes; then
dnl Check whether there is the header for Linux xattr. 
dnl If not, erase this macro which would enable use of listxattr and others
    XATTR_DEF="-DLibisofs_with_aaip_xattR"
    AC_CHECK_HEADER(attr/xattr.h, AC_CHECK_LIB(c, listxattr, X= , XATTR_DEF= ), XATTR_DEF= )
else
    XATTR_DEF=
fi
AC_SUBST(XATTR_DEF)


dnl ts A90409
dnl Same situation as with xattr and ACL: libisoburn does not depend directly
dnl on zlib. But if it is enabled in libisofs then it seems wise to link it
dnl with libisoburn apps.
AC_ARG_ENABLE(zlib,
[  --enable-zlib           Enable use of zlib by libisofs, default=yes],
               , enable_zlib=yes)
if test x$enable_zlib = xyes; then
dnl Check whether there is the header for zlib. 
dnl If not, erase this macro which would enable use of compress2() and others.
dnl Linking fails on SuSE 9.0 because zlib has compress2() but lacks  
dnl compressBound(). So compressBound is the more modern thing to test.
dnl The empty parameter after "compressBound" causes -lz.
    ZLIB_DEF="-DLibisofs_with_zliB"
    AC_CHECK_HEADER(zlib.h, AC_CHECK_LIB(z, compressBound, , ZLIB_DEF= ), ZLIB_DEF= )
else
    ZLIB_DEF=
fi
AC_SUBST(ZLIB_DEF)


dnl ts B00107
dnl Just for the case that it is necessary to give link option -lcdio not only
dnl with libburn but also with libburn apps like xorriso.
dnl On SuSE 10.2 this is not needed. libburn finds libcdio on its own.
AC_ARG_ENABLE(libcdio,
[  --enable-libcdio         Enable EXPERIMENTAL use of libcdio as system adapter, default=no],
               , enable_libcdio=no)
if test x$enable_libcdio = xyes; then
dnl Check whether there is libcdio-devel and libcdio-runtime.
dnl If not, erase this macro
    LIBCDIO_DEF="-DLibburn_use_libcdiO"
dnl The empty yes case obviously causes -lcdio to be linked
    AC_CHECK_HEADER(cdio/cdio.h, AC_CHECK_LIB(cdio, mmc_last_cmd_sense, , LIBCDIO_DEF= ), LIBCDIO_DEF= )
else
    LIBCDIO_DEF=
fi
AC_SUBST(LIBCDIO_DEF)


AC_ARG_ENABLE(external-filters,
[  --enable-external-filters   Enable use of external filter programs by xorriso, default=yes],
               , enable_external_filters=yes)
if test x"$enable_external_filters" = xyes; then
    EXTF_DEF="-DXorriso_allow_external_filterS"
    echo "enabled  xorriso external filter programs"
else
    EXTF_DEF=
    echo "disabled xorriso external filter programs"
fi
AC_SUBST(EXTF_DEF)

AC_ARG_ENABLE(external-filters-setuid,
[  --enable-external-filters-setuid   Enable xorriso external filter programs under setuid, default=no],
               , enable_external_filters_setuid=no)
if test x$enable_external_filters_setuid = xyes; then
    EXTF_SUID_DEF="-DXorriso_allow_extf_suiD"
    echo "enabled  xorriso external filter programs under setuid"
else
    EXTF_SUID_DEF=
    echo "disabled xorriso external filter programs under setuid"
fi
AC_SUBST(EXTF_SUID_DEF)

AC_ARG_ENABLE(dvd-obs-64k,
[  --enable-dvd-obs-64k            64 KB default size for xorriso DVD/BD writing, default=no],
               , enable_fifo_odirect=no)
if test x$enable_dvd_obs_64k = xyes; then
    XORRISO_DVD_OBS_64K="-DXorriso_dvd_obs_default_64K"
    echo "enabled  xorriso write size default 64 KB on DVD and BD"
else
    XORRISO_DVD_OBS_64K=
    echo "disabled xorriso write size default 64 KB on DVD and BD"
fi
AC_SUBST(XORRISO_DVD_OBS_64K)


AC_CHECK_HEADER(libburn/libburn.h)
AC_CHECK_HEADER(libisofs/libisofs.h)

dnl Check for proper library versions
LIBBURN_REQUIRED=0.7.8
LIBISOFS_REQUIRED=0.6.32
PKG_CHECK_MODULES(LIBBURN, libburn-1 >= $LIBBURN_REQUIRED)
PKG_CHECK_MODULES(LIBISOFS, libisofs-1 >= $LIBISOFS_REQUIRED)

if test x$LIBCDIO_DEF = x
then
    if test x$enable_libcdio = xyes
    then
      echo "WARNING: could not enable use of libcdio as system adapter"
    fi
else
    echo "enabled  EXPERIMENTAL use of libcdio as system adapter"

dnl For some reason this check may not be done earlier or else pkg-config
dnl is not found.
    LIBCDIO_REQUIRED=0.83
    PKG_CHECK_MODULES(LIBCDIO, libcdio >= $LIBCDIO_REQUIRED)
fi

dnl Add compiler-specific flags

dnl See if the user wants aggressive optimizations of the code
AC_ARG_ENABLE(debug,
[  --enable-debug          Disable aggressive optimizations [default=yes]],
              , enable_debug=yes)
if test x$enable_debug != xyes; then
    if test x$GCC = xyes; then
        CFLAGS="$CFLAGS -O3"
        CFLAGS="$CFLAGS -fexpensive-optimizations"
    fi
    CFLAGS="$CFLAGS -DNDEBUG"
else
    if test x$GCC = xyes; then
        CFLAGS="$CFLAGS -g -pedantic -Wall"
    fi
    CFLAGS="$CFLAGS -DDEBUG"
fi

CFLAGS="$CFLAGS $READLINE_DEF $LIBACL_DEF $XATTR_DEF $EXTF_DEF $EXTF_SUID_DEF $ZLIB_DEF $XORRISO_DVD_OBS_64K"

AC_CONFIG_FILES([
	Makefile
	doc/doxygen.conf
	version.h
	libisoburn-1.pc
	])
AC_OUTPUT