config-scripts/cups-image.m4

   1 dnl
   2 dnl "$Id: cups-image.m4 1794 2001-06-27 19:06:46Z mike $"
   3 dnl
   4 dnl   Image library stuff for the Common UNIX Printing System (CUPS).
   5 dnl
   6 dnl   Copyright 1997-2001 by Easy Software Products, all rights reserved.
   7 dnl
   8 dnl   These coded instructions, statements, and computer programs are the
   9 dnl   property of Easy Software Products and are protected by Federal
  10 dnl   copyright law.  Distribution and use rights are outlined in the file
  11 dnl   "LICENSE.txt" which should have been included with this file.  If this
  12 dnl   file is missing or damaged please contact Easy Software Products
  13 dnl   at:
  14 dnl
  15 dnl       Attn: CUPS Licensing Information
  16 dnl       Easy Software Products
  17 dnl       44141 Airport View Drive, Suite 204
  18 dnl       Hollywood, Maryland 20636-3111 USA
  19 dnl
  20 dnl       Voice: (301) 373-9603
  21 dnl       EMail: cups-info@cups.org
  22 dnl         WWW: http://www.cups.org
  23 dnl
  24
  25 dnl Save the current libraries since we don't want the image libraries
  26 dnl included with every program...
  27 SAVELIBS="$LIBS"
  28
  29 dnl Check for image libraries...
  30 LIBJPEG=""
  31 LIBPNG=""
  32 LIBTIFF=""
  33 LIBZ=""
  34
  35 AC_SUBST(LIBJPEG)
  36 AC_SUBST(LIBPNG)
  37 AC_SUBST(LIBTIFF)
  38 AC_SUBST(LIBZ)
  39
  40 AC_CHECK_HEADER(jpeglib.h,
  41     AC_CHECK_LIB(jpeg, jpeg_destroy_decompress,
  42         AC_DEFINE(HAVE_LIBJPEG)
  43         LIBJPEG="-ljpeg"
  44         LIBS="$LIBS -ljpeg"))
  45
  46 AC_CHECK_HEADER(zlib.h,
  47     AC_CHECK_LIB(z, gzgets,
  48         AC_DEFINE(HAVE_LIBZ)
  49         LIBZ="-lz"
  50         LIBS="$LIBS -lz"))
  51
  52 dnl PNG library uses math library functions...
  53 AC_CHECK_LIB(m, pow)
  54
  55 AC_CHECK_HEADER(png.h,
  56     AC_CHECK_LIB(png, png_set_tRNS_to_alpha,
  57         AC_DEFINE(HAVE_LIBPNG)
  58         LIBPNG="-lpng -lm"))
  59
  60 AC_CHECK_HEADER(tiff.h,
  61     AC_CHECK_LIB(tiff, TIFFReadScanline,
  62         AC_DEFINE(HAVE_LIBTIFF)
  63         LIBTIFF="-ltiff"))
  64
  65 dnl Restore original LIBS settings...
  66 LIBS="$SAVELIBS"
  67
  68 dnl
  69 dnl End of "$Id: cups-image.m4 1794 2001-06-27 19:06:46Z mike $".
  70 dnl