config-scripts/cups-image.m4

   1 dnl
   2 dnl "$Id: cups-image.m4 4644 2005-09-15 18:43:06Z mike $"
   3 dnl
   4 dnl   Image library stuff for the Common UNIX Printing System (CUPS).
   5 dnl
   6 dnl   Copyright 1997-2005 by Easy Software Products, all rights reserved.
   7 dnl
   8 dnl   These coded instructions, statements, and computer programs are the
   9 dnl   property of Easy Software Products and are protected by Federal
  10 dnl   copyright law.  Distribution and use rights are outlined in the file
  11 dnl   "LICENSE.txt" which should have been included with this file.  If this
  12 dnl   file is missing or damaged please contact Easy Software Products
  13 dnl   at:
  14 dnl
  15 dnl       Attn: CUPS Licensing Information
  16 dnl       Easy Software Products
  17 dnl       44141 Airport View Drive, Suite 204
  18 dnl       Hollywood, Maryland 20636 USA
  19 dnl
  20 dnl       Voice: (301) 373-9600
  21 dnl       EMail: cups-info@cups.org
  22 dnl         WWW: http://www.cups.org
  23 dnl
  24
  25 dnl Save the current libraries since we don't want the image libraries
  26 dnl included with every program...
  27 SAVELIBS="$LIBS"
  28
  29 dnl Check for image libraries...
  30 AC_ARG_ENABLE(jpeg, [  --enable-jpeg           turn on JPEG support, default=yes])
  31 AC_ARG_ENABLE(png, [  --enable-png            turn on PNG support, default=yes])
  32 AC_ARG_ENABLE(tiff, [  --enable-tiff           turn on TIFF support, default=yes])
  33
  34 LIBJPEG=""
  35 LIBPNG=""
  36 LIBTIFF=""
  37 LIBZ=""
  38
  39 AC_SUBST(LIBJPEG)
  40 AC_SUBST(LIBPNG)
  41 AC_SUBST(LIBTIFF)
  42 AC_SUBST(LIBZ)
  43
  44 if test x$enable_jpeg != xno; then
  45     AC_CHECK_HEADER(jpeglib.h,
  46         AC_CHECK_LIB(jpeg, jpeg_destroy_decompress,
  47             AC_DEFINE(HAVE_LIBJPEG)
  48             LIBJPEG="-ljpeg"
  49             LIBS="$LIBS -ljpeg"))
  50 else
  51     AC_MSG_NOTICE([JPEG support disabled with --disable-jpeg.])
  52 fi
  53
  54 AC_CHECK_HEADER(zlib.h,
  55     AC_CHECK_LIB(z, gzgets,
  56         AC_DEFINE(HAVE_LIBZ)
  57         LIBZ="-lz"
  58         LIBS="$LIBS -lz"))
  59
  60 dnl PNG library uses math library functions...
  61 AC_CHECK_LIB(m, pow)
  62
  63 if test x$enable_png != xno; then
  64     AC_CHECK_HEADER(png.h,
  65         AC_CHECK_LIB(png, png_set_tRNS_to_alpha,
  66             AC_DEFINE(HAVE_LIBPNG)
  67             LIBPNG="-lpng -lm"))
  68 else
  69     AC_MSG_NOTICE([PNG support disabled with --disable-png.])
  70 fi
  71
  72 if test x$enable_tiff != xno; then
  73     AC_CHECK_HEADER(tiff.h,
  74         AC_CHECK_LIB(tiff, TIFFReadScanline,
  75         AC_DEFINE(HAVE_LIBTIFF)
  76         LIBTIFF="-ltiff"))
  77 else
  78     AC_MSG_NOTICE([TIFF support disabled with --disable-tiff.])
  79 fi
  80
  81 dnl Restore original LIBS settings...
  82 LIBS="$SAVELIBS"
  83
  84 EXPORT_LIBJPEG="$LIBJPEG"
  85 EXPORT_LIBPNG="$LIBPNG"
  86 EXPORT_LIBTIFF="$LIBTIFF"
  87 EXPORT_LIBZ="$LIBZ"
  88
  89 AC_SUBST(EXPORT_LIBJPEG)
  90 AC_SUBST(EXPORT_LIBPNG)
  91 AC_SUBST(EXPORT_LIBTIFF)
  92 AC_SUBST(EXPORT_LIBZ)
  93
  94 AC_CHECK_HEADER(stdlib.h,AC_DEFINE(HAVE_STDLIB_H))
  95
  96 dnl
  97 dnl End of "$Id: cups-image.m4 4644 2005-09-15 18:43:06Z mike $".
  98 dnl