config-scripts/cups-image.m4

   1 dnl
   2 dnl "$Id: cups-image.m4 6649 2007-07-11 21:46:42Z mike $"
   3 dnl
   4 dnl   Image library/filter stuff for the Common UNIX Printing System (CUPS).
   5 dnl
   6 dnl   Copyright 2007 by Apple Inc.
   7 dnl   Copyright 1997-2006 by Easy Software Products, all rights reserved.
   8 dnl
   9 dnl   These coded instructions, statements, and computer programs are the
  10 dnl   property of Apple Inc. and are protected by Federal copyright
  11 dnl   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  12 dnl   which should have been included with this file.  If this file is
  13 dnl   file is missing or damaged, see the license at "http://www.cups.org/".
  14 dnl
  15
  16 dnl See if we want the image filters included at all...
  17 AC_ARG_ENABLE(image, [  --enable-image          turn on image filters, default=auto])
  18
  19 IMGFILTERS=""
  20 if test "x$enable_image" != xno; then
  21         AC_MSG_CHECKING(whether to build image filters)
  22         if test "x$enable_image" = xyes -o $uname != Darwin; then
  23                 IMGFILTERS="imagetops imagetoraster"
  24                 AC_MSG_RESULT(yes)
  25         else
  26                 AC_MSG_RESULT(no)
  27         fi
  28 fi
  29
  30 AC_SUBST(IMGFILTERS)
  31
  32 dnl Check for image libraries...
  33 AC_ARG_ENABLE(jpeg, [  --enable-jpeg           turn on JPEG support, default=yes])
  34 AC_ARG_ENABLE(png, [  --enable-png            turn on PNG support, default=yes])
  35 AC_ARG_ENABLE(tiff, [  --enable-tiff           turn on TIFF support, default=yes])
  36
  37 LIBJPEG=""
  38 LIBPNG=""
  39 LIBTIFF=""
  40 LIBZ=""
  41
  42 AC_SUBST(LIBJPEG)
  43 AC_SUBST(LIBPNG)
  44 AC_SUBST(LIBTIFF)
  45 AC_SUBST(LIBZ)
  46
  47 dnl Image libraries use math library functions...
  48 AC_SEARCH_LIBS(pow, m)
  49
  50 dnl Save the current libraries since we don't want the image libraries
  51 dnl included with every program...
  52 SAVELIBS="$LIBS"
  53
  54 dnl JPEG library...
  55 if test x$enable_jpeg != xno; then
  56     AC_CHECK_HEADER(jpeglib.h,
  57         AC_CHECK_LIB(jpeg, jpeg_destroy_decompress,
  58             AC_DEFINE(HAVE_LIBJPEG)
  59             LIBJPEG="-ljpeg"
  60             LIBS="$LIBS -ljpeg"))
  61 else
  62     AC_MSG_NOTICE([JPEG support disabled with --disable-jpeg.])
  63 fi
  64
  65 dnl ZLIB library...
  66 AC_CHECK_HEADER(zlib.h,
  67     AC_CHECK_LIB(z, gzgets,
  68         AC_DEFINE(HAVE_LIBZ)
  69         LIBZ="-lz"
  70         LIBS="$LIBS -lz"))
  71
  72 dnl PNG library...
  73 if test x$enable_png != xno; then
  74     AC_CHECK_HEADER(png.h,
  75         AC_CHECK_LIB(png, png_create_read_struct,
  76             AC_DEFINE(HAVE_LIBPNG)
  77             LIBPNG="-lpng"))
  78 else
  79     AC_MSG_NOTICE([PNG support disabled with --disable-png.])
  80 fi
  81
  82 dnl TIFF library...
  83 if test x$enable_tiff != xno; then
  84     AC_CHECK_HEADER(tiff.h,
  85         AC_CHECK_LIB(tiff, TIFFReadScanline,
  86         AC_DEFINE(HAVE_LIBTIFF)
  87         LIBTIFF="-ltiff"))
  88 else
  89     AC_MSG_NOTICE([TIFF support disabled with --disable-tiff.])
  90 fi
  91
  92 dnl Restore original LIBS settings...
  93 LIBS="$SAVELIBS"
  94
  95 EXPORT_LIBJPEG="$LIBJPEG"
  96 EXPORT_LIBPNG="$LIBPNG"
  97 EXPORT_LIBTIFF="$LIBTIFF"
  98 EXPORT_LIBZ="$LIBZ"
  99
 100 AC_SUBST(EXPORT_LIBJPEG)
 101 AC_SUBST(EXPORT_LIBPNG)
 102 AC_SUBST(EXPORT_LIBTIFF)
 103 AC_SUBST(EXPORT_LIBZ)
 104
 105 AC_CHECK_HEADER(stdlib.h,AC_DEFINE(HAVE_STDLIB_H))
 106
 107 dnl
 108 dnl End of "$Id: cups-image.m4 6649 2007-07-11 21:46:42Z mike $".
 109 dnl