AC_INIT([libisoburn], [0.4.3], [http://libburnia-project.org])
AC_PREREQ([2.50])
dnl AC_CONFIG_HEADER([config.h])	

AC_CANONICAL_HOST
AC_CANONICAL_TARGET

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=4
ISOBURN_MICRO_VERSION=3

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 A90829
dnl ### This is the release version 0.4.2 = libisoburn.so.1.31.0
dnl This is the development version after above stable release
dnl LT_CURRENT++, LT_AGE++ have not happened happened yet.
dnl ### LT_CURRENT++, LT_AGE++ has happened meanwhile.
dnl
dnl SONAME = 32 - 31 = 1 . Library name = libisoburn.so.1.31.0
LT_RELEASE=$ISOBURN_MAJOR_VERSION.$ISOBURN_MINOR_VERSION
LT_CURRENT=32
LT_AGE=31
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

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, , )

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"
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= )
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 The empty parameter after "compress2" causes -lz.
    ZLIB_DEF="-DLibisofs_with_zliB"
    AC_CHECK_HEADER(zlib.h, AC_CHECK_LIB(z, compress2, , ZLIB_DEF= ), ZLIB_DEF= )
else
    ZLIB_DEF=
fi
AC_SUBST(ZLIB_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_CHECK_HEADER(libburn/libburn.h)
AC_CHECK_HEADER(libisofs/libisofs.h)

dnl Check for proper library versions
LIBBURN_REQUIRED=0.7.2
LIBISOFS_REQUIRED=0.6.24
PKG_CHECK_MODULES(LIBBURN, libburn-1 >= $LIBBURN_REQUIRED)
PKG_CHECK_MODULES(LIBISOFS, libisofs-1 >= $LIBISOFS_REQUIRED)

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

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