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-rw-r--r--libjpegtwrp/rdgif.c38
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diff --git a/libjpegtwrp/rdgif.c b/libjpegtwrp/rdgif.c
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+/*
+ * rdgif.c
+ *
+ * Copyright (C) 1991-1997, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains routines to read input images in GIF format.
+ *
+ *****************************************************************************
+ * NOTE: to avoid entanglements with Unisys' patent on LZW compression, *
+ * the ability to read GIF files has been removed from the IJG distribution. *
+ * Sorry about that. *
+ *****************************************************************************
+ *
+ * We are required to state that
+ * "The Graphics Interchange Format(c) is the Copyright property of
+ * CompuServe Incorporated. GIF(sm) is a Service Mark property of
+ * CompuServe Incorporated."
+ */
+
+#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
+
+#ifdef GIF_SUPPORTED
+
+/*
+ * The module selection routine for GIF format input.
+ */
+
+GLOBAL(cjpeg_source_ptr)
+jinit_read_gif (j_compress_ptr cinfo)
+{
+ fprintf(stderr, "GIF input is unsupported for legal reasons. Sorry.\n");
+ exit(EXIT_FAILURE);
+ return NULL; /* keep compiler happy */
+}
+
+#endif /* GIF_SUPPORTED */