+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 ============================================
+