+dnl ======================== End of ggv checks =================================
+
+dnl ================== tiff checks ===================================================
+AC_ARG_WITH(libtiff,
+ [AC_HELP_STRING([--without-libtiff],
+ [disable TIFF loader for gdk-pixbuf])])
+
+dnl Test for libtiff
+ if test x$with_libtiff != xno && test -z "$LIBTIFF"; then
+ AC_CHECK_LIB(tiff, TIFFReadScanline,
+ [AC_CHECK_HEADER(tiffio.h,
+ TIFF='tiff'; LIBTIFF='-ltiff',
+ AC_MSG_WARN(*** TIFF loader will not be built (TIFF header files not found) ***))],
+ [AC_CHECK_LIB(tiff, TIFFWriteScanline,
+ [AC_CHECK_HEADER(tiffio.h,
+ TIFF='tiff'; LIBTIFF='-ltiff -ljpeg -lz',
+ AC_MSG_WARN(*** TIFF loader will not be built (TIFF header files not found) ***))],
+ [AC_CHECK_LIB(tiff34, TIFFFlushData,
+ [AC_CHECK_HEADER(tiffio.h,
+ TIFF='tiff'; LIBTIFF='-ltiff34 -ljpeg -lz',
+ AC_MSG_WARN(*** TIFF loader will not be built (TIFF header files not found) ***))],
+ AC_MSG_WARN(*** TIFF loader will not be built (TIFF library not found) ***), -ljpeg -lz -lm)], -ljpeg -lz -lm)], -lm)
+ fi
+
+ if test x$with_libtiff != xno && test -z "$LIBTIFF"; then
+ AC_MSG_ERROR([
+*** Checks for TIFF loader failed. You can build without it by passing
+*** --without-libtiff to configure ])
+ fi
+AC_SUBST(LIBTIFF)
+dnl ================== end of tiff checks ============================================
+
+dnl ================== djvu checks ===================================================
+
+AC_ARG_ENABLE(djvu,
+ [AC_HELP_STRING([--enable-djvu], [Compile with support of djvu viewer])],enable_djvu="$enableval",enable_djvu=no)
+
+if test "x$enable_djvu" = "xyes"; then
+ AC_CHECK_HEADERS([libdjvu/ddjvuapi.h],enable_djvu=yes,enable_djvu=no,)
+fi
+
+if test "x$enable_djvu" = "xyes"; then
+ AC_CHECK_LIB([djvulibre],ddjvu_context_create,enable_djvu=yes,enable_djvu=no,"-lpthread")
+fi
+
+if test "x$enable_djvu" = "xyes"; then
+ AC_DEFINE([ENABLE_DJVU], [1], [Enable djvu viewer support.])
+fi
+AM_CONDITIONAL(ENABLE_DJVU, test x$enable_djvu = xyes)
+
+dnl ================== End of djvu checks ===================================================
+
+dnl ================== dvi checks ===================================================
+
+AC_ARG_ENABLE(dvi,
+ [AC_HELP_STRING([--enable-dvi], [Compile with support of dvi viewer])],enable_dvi="$enableval",enable_dvi=no)