# get rid of that stupid cache mechanism
rm -f config.cache

AC_INIT(configure.in)
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
AC_ISC_POSIX
AM_INIT_AUTOMAKE(imlib2, 1.2.0.002)
AM_CONFIG_HEADER(config.h)

AC_C_BIGENDIAN
AC_PROG_CC
AM_PROG_CC_STDC
AC_HEADER_STDC
AC_C_CONST
AM_ENABLE_SHARED
AM_PROG_LIBTOOL

if test "x${bindir}" = 'x${exec_prefix}/bin'; then
  if test "x${exec_prefix}" = "xNONE"; then
    if test "x${prefix}" = "xNONE"; then
      bindir="${ac_default_prefix}/bin";
    else
      bindir="${prefix}/bin";
    fi
  else
    if test "x${prefix}" = "xNONE"; then
      bindir="${ac_default_prefix}/bin";
    else
      bindir="${prefix}/bin";
    fi
  fi
fi

if test "x${libdir}" = 'x${exec_prefix}/lib'; then
  if test "x${exec_prefix}" = "xNONE"; then
    if test "x${prefix}" = "xNONE"; then
      libdir="${ac_default_prefix}/lib";
    else
      libdir="${prefix}/lib";
    fi
  else
    if test "x${prefix}" = "xNONE"; then
      libdir="${ac_default_prefix}/lib";
    else
      libdir="${prefix}/lib";
    fi
  fi
fi

dnl Set PACKAGE_BIN_DIR in config.h.
if test "x${bindir}" = 'xNONE'; then
  if test "x${prefix}" = "xNONE"; then
    AC_DEFINE_UNQUOTED(PACKAGE_BIN_DIR, "${ac_default_prefix}/bin", [Installation directory for user executables])
  else
    AC_DEFINE_UNQUOTED(PACKAGE_BIN_DIR, "${prefix}/bin", [Installation directory for user executables])
  fi
else
  AC_DEFINE_UNQUOTED(PACKAGE_BIN_DIR, "${bindir}", [Installation directory for user executables])
fi

dnl Set PACKAGE_LIB_DIR in config.h.
if test "x${libdir}" = 'xNONE'; then
  if test "x${prefix}" = "xNONE"; then
    AC_DEFINE_UNQUOTED(PACKAGE_LIB_DIR, "${ac_default_prefix}/lib", [Installation directory for libraries])
  else
    AC_DEFINE_UNQUOTED(PACKAGE_LIB_DIR, "${prefix}/lib", [Installation directory for libraries])
  fi
else
  AC_DEFINE_UNQUOTED(PACKAGE_LIB_DIR, "${libdir}", [Installation directory for libraries])
fi

dnl Set PACKAGE_DATA_DIR in config.h.
if test "x${datadir}" = 'x${prefix}/share'; then
  if test "x${prefix}" = "xNONE"; then
    AC_DEFINE_UNQUOTED(PACKAGE_DATA_DIR, "${ac_default_prefix}/share/${PACKAGE}", "Package installed data destination")
  else
    AC_DEFINE_UNQUOTED(PACKAGE_DATA_DIR, "${prefix}/share/${PACKAGE}", "Package installed data destination")
  fi
else
  AC_DEFINE_UNQUOTED(PACKAGE_DATA_DIR, "${datadir}/${PACKAGE}", "Package installed data destination")
fi

dnl Set PACKAGE_SOURCE_DIR in config.h.
packagesrcdir=`cd $srcdir && pwd`
AC_DEFINE_UNQUOTED(PACKAGE_SOURCE_DIR, "${packagesrcdir}", [Source code directory])

# FIXME: fill in requirements for pc.in - but only ft2 has a pc file!
requirements="freetype2"

mmx=no
AC_ARG_ENABLE(mmx,[  --disable-mmx           attempt compiling using mmx assembly [default=yes]],
[
  if test x$enableval = xyes; then
    mmx=yes
    AC_MSG_RESULT(enabling mmx support)
  else
    mmx=no
    AC_MSG_RESULT(disabling mmx support)
  fi
],
[
if test x$target_os = xlinux-gnu -o x$target_os = xlinux; then
  if test x$target_cpu = x$host_cpu; then
    mmx=`cat /proc/cpuinfo | grep mmx`
    if test -n "$mmx"; then
      mmx=yes
      echo "You appear to be compiling on a "$target_cpu/$target_os" system; using MMX."
    fi
  else
    echo ""
    echo "You are cross-compiling on a "$host_cpu" machine for a "$target_cpu/$target_os" machine."
    echo "If this target supports mmx, please enable mmx with --enable-mmx as a"
    echo "configure option."
    echo ""
  fi
else
  echo ""
  echo "You are not running Linux - This script cannot auto-detect mmx assembly."
  echo "(You appear to be running $target_os.)"
  echo "You will have to enable the mmx assembly (which gives anywhere from 10%"
  echo "to 300% speedups) by adding --enable-mmx on the configure command-line."
  echo ""
fi
]
)
if test x$mmx = xyes; then
  AC_DEFINE(DO_MMX_ASM, 1, [enabling MMX Assembly])
  AC_MSG_RESULT(enabled mmx support)
else
  AC_MSG_RESULT(disabled mmx support)
fi
AM_CONDITIONAL(BUILD_MMX, test x$mmx = xyes)

# check for freetype
AC_ARG_WITH(freetype-config, [  --with-freetype-config=FREETYPE_CONFIG    use freetype-config specified ],
[ FREETYPE_CONFIG=$withval;
  echo "using "$FREETYPE_CONFIG" for freetype-config"; ],
[ if test -z "$FREETYPE_CONFIG"; then
    AC_PATH_PROG(FREETYPE_CONFIG, "freetype-config", "", $PATH)
  fi
])
freetype_cflags=`$FREETYPE_CONFIG --cflags`
freetype_libs=`$FREETYPE_CONFIG --libs`

AC_PATH_X([X], [X11/Xlib.h], [XOpenDisplay(NULL)])

if test "x$have_x" = "xno"; then
   # If --without-x was passed, this will be "disabled" instead of "no" --
   # so always treat "no" as an error
   AC_MSG_ERROR(
[no X support found.  Use --x-includes and --x-libraries to specify the X
path on your system, or --without-x to disable X support.])
fi

if test "x$have_x" = "xyes"; then
  if test "x$x_includes" != "x"; then
    x_cflags="-I$x_includes"
  fi
  if test "x$x_libraries" != "x"; then
    x_libs="-L$x_libraries -lX11 -lXext"
  else
    x_libs="-lX11 -lXext"
  fi
  AM_CONDITIONAL(BUILD_X11, true)
  AC_DEFINE(BUILD_X11, 1, [enabling X11 support])
else
  x_cflags=""
  x_libs=""
  AM_CONDITIONAL(BUILD_X11, false)
fi

dlopen_libs=""
AC_CHECK_LIB(dl, dlopen, dlopen_libs=-ldl)

my_includes=$freetype_cflags" "$x_cflags" "
my_libs=$freetype_libs" "$x_libs" "$dlopen_libs" -lm"
AC_SUBST(my_includes)
AC_SUBST(my_libs)

AC_CHECK_LIB(jpeg, jpeg_destroy_decompress,
  jpeg_ok=yes,
  jpeg_ok=no
  AC_MSG_WARN(*** Native JPEG support will not be built (JPEG library not found) ***),
  )
if test "$jpeg_ok" = yes; then
  AC_MSG_CHECKING([for jpeglib.h])
  AC_TRY_CPP(
  [#include <stdio.h>
   #undef PACKAGE
   #undef VERSION
   #include <jpeglib.h>],
  jpeg_ok=yes,
  jpeg_ok=no)
  AC_MSG_RESULT($jpeg_ok)
  if test "$jpeg_ok" = yes; then
    JPEGLIBS="-ljpeg"
  else
    AC_MSG_WARN(*** Native JPEG support will not be built (JPEG header file not found) ***)
  fi
fi
AM_CONDITIONAL(BUILD_JPEG_LOADER, test "$jpeg_ok" = yes)
AC_SUBST(JPEGLIBS)

AC_CHECK_LIB(png, png_read_info,
  png_ok=yes,
  png_ok=no
  AC_MSG_WARN(*** Native PNG support will not be built (PNG library not found) ***),
  -lz -lm)
if test "$png_ok" = yes; then
  AC_MSG_CHECKING([for png.h])
  AC_TRY_CPP(
  [#include <stdio.h>
   #undef PACKAGE
   #undef VERSION
   #include <png.h>],
  png_ok=yes,
  png_ok=no)
  AC_MSG_RESULT($png_ok)
  if test "$png_ok" = yes; then
    PNGLIBS="-lpng -lz -lm"
  else
    AC_MSG_WARN(*** Native PNG support will not be built (PNG header file not found) ***)
  fi
fi
AM_CONDITIONAL(BUILD_PNG_LOADER, test "$png_ok" = yes)
AC_SUBST(PNGLIBS)

AC_CHECK_LIB(tiff, TIFFReadScanline,
  tiff_libs="-ltiff"
  tiff_ok=yes,
AC_CHECK_LIB(tiff, TIFFReadScanline,
  tiff_libs="-ltiff -ljpeg -lz -lm"
  tiff_ok=yes,
AC_CHECK_LIB(tiff34, TIFFReadScanline,
  tiff_libs="-ltiff34 -ljpeg -lz -lm"
  tiff_ok=yes,
  tiff_ok=no
  AC_MSG_WARN(*** Native TIFF support will not be built (TIFF library not found) ***), 
  -ljpeg -lz -lm),
  -ljpeg -lz -lm),
  )
if test "$tiff_ok" = yes; then
  AC_MSG_CHECKING([for tiffio.h])
  AC_TRY_CPP(
  [#include <stdio.h>
   #undef PACKAGE
   #undef VERSION
   #include <tiffio.h>],
  tiff_ok=yes,
  tiff_ok=no)
  AC_MSG_RESULT($tiff_ok)
  if test "$tiff_ok" = yes; then
    TIFFLIBS=$tiff_libs
  else
    AC_MSG_WARN(*** Native TIFF support will not be built (TIFF header file not found) ***)
  fi
fi
AM_CONDITIONAL(BUILD_TIFF_LOADER, test "$tiff_ok" = yes)
AC_SUBST(TIFFLIBS)

AC_CHECK_LIB(ungif, DGifOpenFileName,
  gif_libs="-lungif"
  gif_ok=yes,
  gif_ok=no,
  )
if test "$gif_ok" = yes; then
  AC_MSG_CHECKING([for gif_lib.h])
  AC_TRY_CPP(
  [#include <stdio.h>
   #undef PACKAGE
   #undef VERSION
   #include <gif_lib.h>],
  gif_ok=yes,
  gif_ok=no)
  AC_MSG_RESULT($gif_ok)
  if test "$gif_ok" = yes; then
    GIFLIBS=$gif_libs
  fi
fi

if test "$gif_ok" = no; then
  AC_CHECK_LIB(gif, DGifOpenFileName,
    gif_libs="-lgif"
    gif_ok=yes,
    gif_ok=no
    AC_MSG_WARN(*** Native GIF support will not be built (GIF library not found) ***),
    )
  if test "$gif_ok" = yes; then
    AC_MSG_CHECKING([for gif_lib.h])
    AC_TRY_CPP(
    [#include <stdio.h>
     #undef PACKAGE
     #undef VERSION
     #include <gif_lib.h>],
    gif_ok=yes,
    gif_ok=no)
    AC_MSG_RESULT($gif_ok)
    if test "$gif_ok" = yes; then
      GIFLIBS=$gif_libs
    else
      AC_MSG_WARN(*** Native GIF support will not be built (GIF header file not found) ***)
    fi
  fi
fi
AM_CONDITIONAL(BUILD_GIF_LOADER, test "$gif_ok" = yes)
AC_SUBST(GIFLIBS)

AC_CHECK_LIB(z, uncompress,
  zlib_ok=yes,
  zlib_ok=no
  AC_MSG_WARN(*** Native zlib support will not be built (zlib not found) ***), 
  )
if test "$zlib_ok" = yes; then
  AC_MSG_CHECKING([for zlib.h])
  AC_TRY_CPP(
  [#include <stdio.h>
   #undef PACKAGE
   #undef VERSION
   #include <zlib.h>],
  zlib_ok=yes,
  zlib_ok=no)
  AC_MSG_RESULT($zlib_ok)
  if test "$zlib_ok" = yes; then
    ZLIBLIBS="-lz"
  else
    AC_MSG_WARN(*** Native zlib support will not be built (zlib header file not found) ***)
  fi
fi
AM_CONDITIONAL(BUILD_ZLIB_LOADER, test "$zlib_ok" = yes)
AC_SUBST(ZLIBLIBS)

AC_CHECK_LIB(bz2, BZ2_bzRead,
  bz2_ok=yes,
  bz2_ok=no
  AC_MSG_WARN(*** Native bz2 support will not be built (bzip2 library not found) ***),
  )
if test "$bz2_ok" = yes; then
  AC_MSG_CHECKING([for bzlib.h])
  AC_TRY_CPP(
  [#include <stdio.h>
   #undef PACKAGE
   #undef VERSION
   #include <bzlib.h>],
  bz2_ok=yes,
  bz2_ok=no)
  AC_MSG_RESULT($bz2_ok)
  if test "$bz2_ok" = yes; then
    BZ2LIBS="-lbz2"
  else
    AC_MSG_WARN(*** Native bz2 support will not be built (bzip2 header file not found) ***)
  fi
fi
AM_CONDITIONAL(BUILD_BZ2_LOADER, test "$bz2_ok" = yes)
AC_SUBST(BZ2LIBS)

AC_SUBST(requirements)

AC_OUTPUT([
Makefile
imlib2.pc
src/Makefile
src/lib/Makefile
src/bin/Makefile
src/modules/Makefile
src/modules/filters/Makefile
src/modules/loaders/Makefile
data/Makefile
data/fonts/Makefile
data/images/Makefile
doc/Makefile
imlib2-config
README
imlib2.spec
imlib2.oe
imlib2-native.oe
imlib2.bb
imlib2Xnative.bb
debian/changelog
],[
chmod +x imlib2-config
])

#####################################################################
## Info

echo
echo
echo
echo "------------------------------------------------------------------------"
echo "$PACKAGE $VERSION"
echo "------------------------------------------------------------------------"
echo
echo "Configuration Options Summary:"
echo
echo
echo "Image Loaders:"
echo "  JPEG....................: $jpeg_ok"
echo "  PNG.....................: $png_ok"
echo "  TIFF....................: $tiff_ok"
echo "  GIF.....................: $gif_ok"
echo "  ZLIB....................: $zlib_ok"
echo "  BZIP2...................: $bz2_ok"
echo
echo
echo "Use MMX for extra speed...: $mmx"
echo
echo
echo "Installation Path.........: $prefix"
echo
echo "Compilation...............: make"
echo "Installation..............: make install"
echo