configure.ac

   1 dnl Process this file with autoconf to produce a configure script.
   2
   3 AC_PREREQ(2.57)
   4 AC_INIT([Evince],[0.7.1],[http://bugzilla.gnome.org/enter_bug.cgi?product=evince],[evince])
   5 AM_INIT_AUTOMAKE([1.9 dist-bzip2 no-dist-gzip])
   6
   7 AM_CONFIG_HEADER(config.h)
   8
   9 AM_MAINTAINER_MODE
  10
  11 AM_PROG_LIBTOOL
  12
  13 AC_ISC_POSIX
  14 AC_PROG_CC
  15 AM_PROG_CC_STDC
  16 AC_PROG_CXX
  17 AC_STDC_HEADERS
  18 IT_PROG_INTLTOOL([0.35.0])
  19 AC_PATH_PROG([GLIB_GENMARSHAL], [glib-genmarshal])
  20 AC_PATH_PROG([GLIB_MKENUMS],[glib-mkenums])
  21
  22 GNOME_COMMON_INIT
  23 GNOME_DOC_INIT
  24 GNOME_MAINTAINER_MODE_DEFINES
  25 GNOME_COMPILE_WARNINGS
  26 GNOME_CXX_WARNINGS
  27 GNOME_DEBUG_CHECK
  28
  29 GETTEXT_PACKAGE=evince
  30 AC_SUBST(GETTEXT_PACKAGE)
  31 AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE],["$GETTEXT_PACKAGE"],[Gettext package])
  32 AM_GLIB_GNU_GETTEXT
  33
  34 dnl Check dependencies
  35
  36 # LIB_CFLAGS       for helpers and generic widgets. (lib, cut-and-paste)
  37 # BACKEND_CFLAGS   for backend implementations.
  38 # FRONTEND_CFLAGS  for frontend implementations. (properties, thumbnailer)
  39 # FRONTEND_LIBS
  40 # SHELL_CFLAGS     for shell implementation.
  41 # SHELL_LIBS
  42
  43 DBUS_GLIB_REQUIRED=0.71
  44 GTK_REQUIRED=2.8.15
  45 KEYRING_REQUIRED=0.4.0
  46
  47 LIBGNOMEUI_REQUIRED=2.14.0
  48 LIBGNOMEPRINTUI_REQUIRED=2.6.0
  49 GNOME_ICON_THEME_REQUIRED=2.17.1
  50 LIBXML_REQUIRED=2.5.0
  51
  52 GTK_PRINT_REQUIRED=2.10.0
  53
  54 PKG_CHECK_MODULES(LIB, gtk+-2.0 >= $GTK_REQUIRED libgnomeui-2.0 >= $LIBGNOMEUI_REQUIRED libxml-2.0 >= $LIBXML_REQUIRED)
  55 PKG_CHECK_MODULES(BACKEND, gtk+-2.0 >= $GTK_REQUIRED gnome-vfs-2.0)
  56 PKG_CHECK_MODULES(FRONTEND_CORE, gtk+-2.0 >= $GTK_REQUIRED libgnomeui-2.0 >= $LIBGNOMEUI_REQUIRED gnome-icon-theme >= $GNOME_ICON_THEME_REQUIRED libglade-2.0)
  57 PKG_CHECK_MODULES(SHELL_CORE, gtk+-2.0 >= $GTK_REQUIRED libgnomeui-2.0 >= $LIBGNOMEUI_REQUIRED gnome-vfs-2.0 libglade-2.0 gconf-2.0 gnome-keyring-1 >= $KEYRING_REQUIRED)
  58
  59 BACKEND_CFLAGS="$BACKEND_CFLAGS -DGDK_MULTIHEAD_SAFE -DGTK_MULTIHEAD_SAFE"
  60 AC_SUBST(BACKEND_CFLAGS)
  61
  62 GLIB_GENMARSHAL=`$PKG_CONFIG --variable=glib_genmarshal glib-2.0`
  63 AC_SUBST(GLIB_GENMARSHAL)
  64
  65 dnl ========= Print support
  66 AC_ARG_WITH(print,
  67             [AC_HELP_STRING([--with-print=no/gtk/gnome/auto], [Compile with print support [default=auto]])],
  68             PRINT=$withval,
  69             PRINT="auto")
  70
  71 PKG_CHECK_MODULES(GNOME_PRINT,
  72                   libgnomeprintui-2.2 >= $LIBGNOMEPRINTUI_REQUIRED,
  73                   enable_gnome_print=yes, enable_gnome_print=no)
  74 PKG_CHECK_MODULES(GTK_PRINT,
  75                   gtk+-unix-print-2.0 >= $GTK_PRINT_REQUIRED,
  76                   enable_gtk_print=yes, enable_gtk_print=no)
  77 enable_print=no
  78 if test x$PRINT = xgnome -a x$enable_gnome_print = xyes; then
  79    enable_print=gnome
  80 else
  81    if test x$PRINT = xgtk -a x$enable_gtk_print = xyes; then
  82       enable_print=gtk
  83    else
  84       if test x$PRINT = xauto; then
  85          if test x$enable_gtk_print = xyes; then
  86             enable_print=gtk
  87          else
  88             if test x$enable_gnome_print = xyes; then
  89                enable_print=gnome
  90             fi
  91          fi
  92       fi
  93    fi
  94 fi
  95
  96 if test x$enable_print = xgnome; then
  97    AC_SUBST(GNOME_PRINT_CFLAGS)
  98    AC_SUBST(GNOME_PRINT_LIBS)
  99    AC_DEFINE([WITH_GNOME_PRINT],[1],[Enable GNOME Print Support.])
 100    AC_DEFINE([WITH_PRINT],[1],[Enable Print Support.])
 101 fi
 102
 103 if test x$enable_print = xgtk; then
 104    AC_SUBST(GTK_PRINT_CFLAGS)
 105    AC_SUBST(GTK_PRINT_LIBS)
 106    AC_DEFINE([WITH_GTK_PRINT],[1],[Enable GTK Print Support.])
 107    AC_DEFINE([WITH_PRINT],[1],[Enable Print Support.])
 108 fi
 109
 110 AM_CONDITIONAL(WITH_GNOME_PRINT, test x$enable_print = xgnome)
 111 AM_CONDITIONAL(WITH_GTK_PRINT, test x$enable_print = xgtk)
 112
 113
 114 dnl ========= Check for DBUS
 115 PKG_CHECK_MODULES([DBUS], [dbus-glib-1 >= $DBUS_GLIB_REQUIRED],
 116         [enable_dbus=yes],[enable_dbus=no])
 117 AC_SUBST([DBUS_CFLAGS])
 118 AC_SUBST([DBUS_LIBS])
 119
 120 if test "x$enable_dbus" = "xno"; then
 121         AC_MSG_WARN([DBUS support is disabled since dbus $DBUS_GLIB_REQUIRED or higher was not found])
 122 fi
 123
 124 if test "x$enable_dbus" = "xyes" ; then
 125         AC_PATH_PROG([DBUS_BINDING_TOOL], [dbus-binding-tool], [no])
 126
 127         if test x$DBUS_BINDING_TOOL = "xno" ; then
 128                 AC_MSG_ERROR([dbus-binding-tool executable not found in your path - should be installed with dbus glib bindings])
 129         fi
 130
 131         AC_DEFINE([ENABLE_DBUS],[1],[Define if DBUS support is enabled])
 132 fi
 133
 134 SHELL_CFLAGS="$SHELL_CORE_CFLAGS $DBUS_CFLAGS -DGDK_MULTIHEAD_SAFE -DGTK_MULTIHEAD_SAFE"
 135 SHELL_LIBS="$SHELL_CORE_LIBS $DBUS_LIBS -lz"
 136 AC_SUBST(SHELL_CFLAGS)
 137 AC_SUBST(SHELL_LIBS)
 138
 139 FRONTEND_CFLAGS="$FRONTEND_CORE_CFLAGS"
 140 FRONTEND_LIBS="$FRONTEND_CORE_LIBS -lz"
 141 AC_SUBST(FRONTEND_CFLAGS)
 142 AC_SUBST(FRONTEND_LIBS)
 143
 144 AM_CONDITIONAL([ENABLE_DBUS], [test "x$enable_dbus" = "xyes"])
 145 AM_CONDITIONAL([DBUS_TOOL_NO_PREFIX], [test "x$DBUS_VERSION" = "x33"])
 146
 147 dnl Check for Nautilus property page build
 148 AC_ARG_ENABLE(nautilus,
 149         AC_HELP_STRING([--enable-nautilus],[compile the nautilus plugin]),
 150         [case "${enableval}" in
 151         yes) ENABLE_NAUTILUS=yes ;;
 152         no) ENABLE_NAUTILUS=no ;;
 153         *) AC_MSG_ERROR(bad value ${enableval} for --enable-nautilus) ;;
 154         esac],
 155         [ENABLE_NAUTILUS=yes]) dnl Default value
 156
 157 if test x$ENABLE_NAUTILUS = "xyes" ; then
 158         PKG_CHECK_MODULES(NAUTILUS, gtk+-x11-2.0 $MM gthread-2.0 libnautilus-extension,
 159                         [HAVE_NAUTILUS=yes], [HAVE_NAUTILUS=no])
 160 fi
 161
 162 AC_SUBST(NAUTILUS_CFLAGS)
 163 AC_SUBST(NAUTILUS_LIBS)
 164 if test x$HAVE_NAUTILUS = "xyes"; then
 165         AC_DEFINE(HAVE_NAUTILUS, 1, [defined if you build the nautilus plugin])
 166 fi
 167 AM_CONDITIONAL(HAVE_NAUTILUS, test x$HAVE_NAUTILUS = "xyes")
 168
 169 dnl Check for GtkRecent
 170 PKG_CHECK_MODULES(GTK_RECENT, gtk+-2.0 >= 2.10.0,
 171                   [HAVE_GTK_RECENT=yes], [HAVE_GTK_RECENT=no])
 172 if test x$HAVE_GTK_RECENT = xyes; then
 173    AC_DEFINE([HAVE_GTK_RECENT], [1], [defined if GtkRecent is available])
 174 fi
 175 AM_CONDITIONAL(HAVE_GTK_RECENT, test x$HAVE_GTK_RECENT = "xyes")
 176
 177 dnl GConf configuration
 178 AM_GCONF_SOURCE_2
 179
 180 AC_PATH_PROG([GCONFTOOL], [gconftool-2], [no])
 181 if test "x$GCONFTOOL" = "xno"; then
 182         AC_MSG_ERROR([gconftool-2 executable not found in your path - should be installed with GConf])
 183 fi
 184
 185 dnl ================== portability checks ===========================================
 186
 187 dnl for backtrace()
 188 AC_CHECK_HEADERS([execinfo.h])
 189
 190 AC_CHECK_DECL([_NL_MEASUREMENT_MEASUREMENT],[
 191   AC_DEFINE([HAVE__NL_MEASUREMENT_MEASUREMENT],[1],[Define if _NL_MEASUREMENT_MEASUREMENT is available])
 192   ],[],[#include <langinfo.h>])
 193
 194 dnl ================== pdf checks ===================================================
 195 AC_ARG_ENABLE(pdf,
 196               [AC_HELP_STRING([--enable-pdf], [Compile with pdf support])],enable_pdf="$enableval",enable_pdf=yes)
 197
 198 if test "x$enable_pdf" = "xyes"; then
 199     POPPLER_REQUIRED=0.5.4
 200     PKG_CHECK_MODULES(POPPLER, poppler-glib >= $POPPLER_REQUIRED,enable_pdf=yes,enable_pdf=no)
 201
 202     if test "x$enable_pdf" = "xyes"; then
 203             AC_DEFINE([ENABLE_PDF], [1], [Enable pdf support.])
 204             FRONTEND_LIBS="$FRONTEND_LIBS $POPPLER_LIBS"
 205             SHELL_LIBS="$SHELL_LIBS $POPPLER_LIBS"
 206             SHELL_CFLAGS="$SHELL_CFLAGS $POPPLER_CFLAGS"
 207
 208             evince_save_LIBS=$LIBS
 209             LIBS="$LIBS $FRONTEND_LIBS"
 210             AC_CHECK_FUNCS(poppler_page_render)
 211             AC_CHECK_FUNCS(poppler_page_get_duration)
 212             AC_CHECK_FUNCS(poppler_page_get_image_mapping)
 213             LIBS=$evince_save_LIBS
 214
 215             PKG_CHECK_MODULES(CAIRO_PDF, cairo-pdf, enable_cairo_pdf=yes, enable_cairo_pdf=no)
 216             if test x$enable_cairo_pdf == xyes; then
 217                     AC_DEFINE([HAVE_CAIRO_PDF], [1], [defined if cairo-pdf is available])
 218             fi
 219     else
 220             AC_MSG_WARN("PDF support is disabled since poppler-glib library version $POPPLER_REQUIRED or newer not found")
 221     fi
 222 fi
 223
 224 AM_CONDITIONAL(ENABLE_PDF, test x$enable_pdf = xyes)
 225 dnl ================== end of pdf checks ============================================
 226
 227 dnl ================== ggv checks ===================================================
 228 AC_ARG_ENABLE(ps,
 229         [AC_HELP_STRING([--disable-ps], [Compile without PostScript backend])],enable_ps=$enableval,enable_ps="yes")
 230
 231 if test x$enable_ps = xyes; then
 232         AC_DEFINE([ENABLE_PS], [1], [Enable support for PostScript files.])
 233 fi
 234
 235 AM_CONDITIONAL(ENABLE_PS, test x$enable_ps = xyes)
 236
 237 if test x$enable_ps = xyes; then
 238
 239 dnl check for GS version
 240 AC_MSG_CHECKING(for Ghostscript version...)
 241 GS_VERSION=`gs --version | head -n 1 | sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
 242 AC_MSG_RESULT(found $GS_VERSION)
 243 if test "$GS_VERSION" -lt "7"; then
 244         AC_MSG_ERROR([You need Ghostscript version >= 7 in order to run evince])
 245 fi
 246
 247 AC_ARG_WITH(gs-aa-params,
 248             [AC_HELP_STRING([--with-gs-aa-params], [Define antialiasing params for ghostscript])],AA_PARAMS=$withval,
 249             AA_PARMS="-sDEVICE=x11alpha -dNOPLATFONTS -dGraphicsAlphaBits=4 -dTextAlphaBits=4 -dDOINTERPOLATE"
 250             )
 251 AC_DEFINE_UNQUOTED(ALPHA_PARAMS, "$AA_PARMS", [Anti-aliasing parameters for Ghostscript.])
 252 AC_MSG_RESULT(Antialiasing parameters for Ghostscript: $AA_PARMS)
 253
 254 fi
 255 dnl ======================== End of ggv checks =================================
 256
 257 dnl ================== tiff checks ===================================================
 258 AC_ARG_ENABLE(tiff,
 259             [AC_HELP_STRING([--enable-tiff], [Compile with support of multipage tiff])],enable_tiff="$enableval",enable_tiff=yes)
 260
 261 if test "x$enable_tiff" = "xyes"; then
 262     AC_CHECK_HEADERS([tiff.h],enable_tiff=yes,enable_tiff=no,)
 263     if test "x$enable_tiff" = "xyes"; then
 264         AC_CHECK_LIB([tiff],TIFFOpen,enable_tiff=yes,enable_tiff=no,"-lz")
 265         AC_CHECK_LIB([tiff],TIFFReadRGBAImageOriented,enable_tiff=yes,enable_tiff=no,"-lz")
 266     fi
 267     if test "x$enable_tiff" = "xyes"; then
 268             AC_DEFINE([ENABLE_TIFF], [1], [Enable multipage tiff support.])
 269             FRONTEND_LIBS="$FRONTEND_LIBS -ltiff"
 270             SHELL_LIBS="$SHELL_LIBS -ltiff"
 271     else
 272             AC_MSG_WARN("Tiff support is disabled since tiff library version 3.6 or newer not found")
 273     fi
 274 fi
 275
 276 AM_CONDITIONAL(ENABLE_TIFF, test x$enable_tiff = xyes)
 277 dnl ================== end of tiff checks ============================================
 278
 279 dnl ================== djvu checks ===================================================
 280
 281 AC_ARG_ENABLE(djvu,
 282             [AC_HELP_STRING([--enable-djvu], [Compile with support of djvu viewer])],enable_djvu="$enableval",enable_djvu=no)
 283
 284 if test "x$enable_djvu" = "xyes"; then
 285
 286 DJVULIBRE_REQUIRED=3.5.17
 287
 288 PKG_CHECK_MODULES(DJVU, ddjvuapi >= $DJVULIBRE_REQUIRED, enable_djvu=yes, enable_djvu=no)
 289
 290     if test "x$enable_djvu" = "xyes"; then
 291         AC_DEFINE([ENABLE_DJVU], [1], [Enable djvu viewer support.])
 292     else
 293         AC_MSG_WARN([
 294 ** Djvu support is disabled since a recent version of the djvulibre
 295 ** library was not found. You need at least djvulibre-3.5.17 which
 296 ** can be found on http://djvulibre.djvuzone.org
 297 ])
 298     fi
 299 fi
 300
 301 AM_CONDITIONAL(ENABLE_DJVU, test x$enable_djvu = xyes)
 302
 303 dnl ================== End of djvu checks ===================================================
 304
 305 dnl ================== dvi checks ===================================================
 306
 307 AC_ARG_ENABLE(dvi,
 308             [AC_HELP_STRING([--enable-dvi], [Compile with support of dvi viewer])],enable_dvi="$enableval",enable_dvi=no)
 309
 310 AC_ARG_ENABLE(t1lib,
 311             [AC_HELP_STRING([--enable-t1lib], [Compile with support of t1lib for type1 fonts in dvi])],enable_type1_fonts="$enableval",enable_type1_fonts=no)
 312
 313 if test "x$enable_dvi" = "xyes"; then
 314     AC_C_CONST
 315     AC_C_INLINE
 316     AC_TYPE_SIZE_T
 317     AC_CHECK_SIZEOF(long, 4)
 318     AC_CHECK_SIZEOF(int, 4)
 319     AC_CHECK_SIZEOF(short, 2)
 320     AC_CHECK_SIZEOF(void *, 4)
 321     AC_CHECK_LIB([kpathsea],[kpse_init_prog],[enable_dvi=yes],[enable_dvi=no])
 322
 323     if test "x$enable_dvi" = "xyes"; then
 324         AC_DEFINE([ENABLE_DVI], [1], [Enable dvi viewer support.])
 325     else
 326         AC_MSG_WARN("Dvi support is disabled since kpathsea library is not found. Check your TeX installation.")
 327     fi
 328 fi
 329 AM_CONDITIONAL(ENABLE_DVI, test x$enable_dvi = xyes)
 330
 331 if test "x$enable_dvi" = "xyes"; then
 332     if test "x$enable_type1_fonts" = "xyes"; then
 333         AC_CHECK_LIB([t1],T1_InitLib,enable_type1_fonts=yes,enable_type1_fonts=no,[-lm])
 334     fi
 335
 336     if test "x$enable_type1_fonts" = xyes; then
 337         AC_DEFINE([WITH_TYPE1_FONTS], [1], [Enable t1lib support in dvi.])
 338     fi
 339 else
 340     enable_type1_fonts=no
 341 fi
 342 AM_CONDITIONAL(WITH_TYPE1_FONTS, test x$enable_type1_fonts = xyes)
 343
 344 dnl ================== End of dvi checks ===================================================
 345
 346 dnl ================== pixbuf checks ===================================================
 347
 348 AC_ARG_ENABLE(pixbuf,
 349             [AC_HELP_STRING([--enable-pixbuf], [Compile with support of pixbuf])],enable_pixbuf="$enableval",enable_pixbuf=no)
 350 if test "x$enable_pixbuf" = "xyes"; then
 351         AC_DEFINE([ENABLE_PIXBUF], [1], [Enable pixbuf support.])
 352 fi
 353 AM_CONDITIONAL(ENABLE_PIXBUF, test x$enable_pixbuf = xyes)
 354
 355 dnl ================== End of pixbuf checks ===================================================
 356
 357 dnl ================== comic book checks ===================================================
 358
 359 AC_ARG_ENABLE(comics,
 360         [AC_HELP_STRING([--enable-comics], [Compile with support for comic book archives])],enable_comics="$enableval",enable_comics=no)
 361 if test "x$enable_comics" = "xyes"; then
 362         AC_DEFINE([ENABLE_COMICS], [1], [Enable support for comics.])
 363 fi
 364 AM_CONDITIONAL(ENABLE_COMICS, test x$enable_comics = xyes)
 365
 366 dnl ================== End of comic book checks ============================================
 367
 368 dnl ================== impress book checks ===================================================
 369
 370 AC_ARG_ENABLE(impress,
 371         [AC_HELP_STRING([--enable-impress], [Compile with support for impress presentations])],enable_impress="$enableval",enable_impress=no)
 372 if test "x$enable_impress" = "xyes"; then
 373         AC_DEFINE([ENABLE_IMPRESS], [1], [Enable support for impress.])
 374 fi
 375 AM_CONDITIONAL(ENABLE_IMPRESS, test x$enable_impress = xyes)
 376
 377 dnl ================== End of impress book checks ============================================
 378
 379 dnl =================== Mime types list ====================================================
 380
 381 if test "x$enable_pdf" = "xyes" ; then
 382         EVINCE_MIME_TYPES="application/pdf"
 383 fi
 384 if test "x$enable_ps" = "xyes" ; then
 385         EVINCE_MIME_TYPES="$EVINCE_MIME_TYPES;application/postscript;application/x-gzpostscript"
 386 fi
 387 if test "x$enable_dvi" = "xyes"; then
 388         EVINCE_MIME_TYPES="$EVINCE_MIME_TYPES;application/x-dvi"
 389 fi
 390 if test "x$enable_djvu" = "xyes"; then
 391         EVINCE_MIME_TYPES="$EVINCE_MIME_TYPES;image/vnd.djvu"
 392 fi
 393 if test "x$enable_tiff" = "xyes"; then
 394         EVINCE_MIME_TYPES="$EVINCE_MIME_TYPES;image/tiff"
 395 fi
 396 if test "x$enable_comics" = "xyes"; then
 397         EVINCE_MIME_TYPES="$EVINCE_MIME_TYPES;application/x-cbr;application/x-cbz"
 398 fi
 399 if test "x$enable_pixbuf" = "xyes"; then
 400         EVINCE_MIME_TYPES="$EVINCE_MIME_TYPES;image/*"
 401 fi
 402 if test "x$enable_impress" = "xyes"; then
 403         EVINCE_MIME_TYPES="$EVINCE_MIME_TYPES;application/vnd.sun.xml.impress;application/vnd.oasis.opendocument.presentation"
 404 fi
 405 AC_SUBST(EVINCE_MIME_TYPES)
 406
 407 AC_CONFIG_FILES([
 408 backend/Makefile
 409 backend/comics/Makefile
 410 backend/djvu/Makefile
 411 backend/dvi/Makefile
 412 backend/dvi/mdvi-lib/Makefile
 413 backend/impress/Makefile
 414 backend/pdf/Makefile
 415 backend/pixbuf/Makefile
 416 backend/ps/Makefile
 417 backend/tiff/Makefile
 418 cut-n-paste/Makefile
 419 cut-n-paste/recent-files/Makefile
 420 cut-n-paste/toolbar-editor/Makefile
 421 cut-n-paste/zoom-control/Makefile
 422 cut-n-paste/totem-screensaver/Makefile
 423 data/evince.desktop.in
 424 data/Makefile
 425 data/icons/Makefile
 426 data/icons/16x16/Makefile
 427 data/icons/16x16/apps/Makefile
 428 data/icons/16x16/actions/Makefile
 429 data/icons/22x22/Makefile
 430 data/icons/22x22/apps/Makefile
 431 data/icons/22x22/actions/Makefile
 432 data/icons/24x24/Makefile
 433 data/icons/24x24/apps/Makefile
 434 data/icons/24x24/action/Makefile
 435 data/icons/48x48/Makefile
 436 data/icons/48x48/apps/Makefile
 437 data/icons/scalable/Makefile
 438 data/icons/scalable/apps/Makefile
 439 help/Makefile
 440 libdocument/Makefile
 441 Makefile
 442 po/Makefile.in
 443 properties/Makefile
 444 shell/Makefile
 445 test/Makefile
 446 thumbnailer/Makefile
 447 ])
 448
 449 AC_OUTPUT
 450
 451 echo "
 452 Configure summary:
 453         Print Support......:  $enable_print
 454         DBUS Support.......:  $enable_dbus
 455         Nautilus Plugin....:  $HAVE_NAUTILUS
 456
 457         PDF Backend........:  $enable_pdf
 458         PostScript Backend.:  $enable_ps
 459         TIFF Backend.......:  $enable_tiff
 460         DJVU Backend.......:  $enable_djvu
 461         DVI Backend........:  $enable_dvi
 462         Pixbuf Backend.....:  $enable_pixbuf
 463         Comics Backend.....:  $enable_comics
 464         Impress Backend....:  $enable_impress
 465 "