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diff --git a/lzo/examples/precomp.c b/lzo/examples/precomp.c
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+/* precomp.c -- example program: how to generate pre-compressed data
+
+   This file is part of the LZO real-time data compression library.
+
+   Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
+   All Rights Reserved.
+
+   The LZO library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   The LZO library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the LZO library; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+   Markus F.X.J. Oberhumer
+   <markus@oberhumer.com>
+   http://www.oberhumer.com/opensource/lzo/
+ */
+
+
+/*************************************************************************
+// This program shows how to generate pre-compressed data.
+//
+// Please study LZO.FAQ and simple.c first.
+//
+// We will be trying both LZO1X-999 and LZO1Y-999 and choose
+// the algorithm that achieves the best compression ratio.
+**************************************************************************/
+
+#include "lzo/lzoconf.h"
+#include "lzo/lzo1x.h"
+#include "lzo/lzo1y.h"
+
+#define USE_LZO1X 1
+#define USE_LZO1Y 1
+
+#define PARANOID 1
+
+
+/* portability layer */
+#define WANT_LZO_MALLOC 1
+#define WANT_LZO_FREAD 1
+#define WANT_LZO_WILDARGV 1
+#include "examples/portab.h"
+
+
+/*************************************************************************
+//
+**************************************************************************/
+
+int __lzo_cdecl_main main(int argc, char *argv[])
+{
+    int r;
+
+    lzo_bytep in;
+    lzo_uint in_len;
+
+    lzo_bytep out;
+    lzo_uint out_bufsize;
+    lzo_uint out_len = 0;
+
+    lzo_bytep wrkmem;
+    lzo_uint wrk_len;
+
+    lzo_uint best_len;
+    int best_compress = -1;
+
+    lzo_uint orig_len;
+    lzo_uint32 uncompressed_checksum;
+    lzo_uint32 compressed_checksum;
+
+    FILE *f;
+    const char *progname = NULL;
+    const char *in_name = NULL;
+    const char *out_name = NULL;
+    long l;
+
+
+    lzo_wildargv(&argc, &argv);
+
+    printf("\nLZO real-time data compression library (v%s, %s).\n",
+           lzo_version_string(), lzo_version_date());
+    printf("Copyright (C) 1996-2008 Markus Franz Xaver Johannes Oberhumer\nAll Rights Reserved.\n\n");
+
+    progname = argv[0];
+    if (argc < 2 || argc > 3)
+    {
+        printf("usage: %s file [output-file]\n", progname);
+        exit(1);
+    }
+    in_name = argv[1];
+    if (argc > 2) out_name = argv[2];
+
+/*
+ * Step 1: initialize the LZO library
+ */
+    if (lzo_init() != LZO_E_OK)
+    {
+        printf("internal error - lzo_init() failed !!!\n");
+        printf("(this usually indicates a compiler bug - try recompiling\nwithout optimizations, and enable `-DLZO_DEBUG' for diagnostics)\n");
+        exit(1);
+    }
+
+/*
+ * Step 2: allocate the work-memory
+ */
+    wrk_len = 1;
+#ifdef USE_LZO1X
+    if (wrk_len < LZO1X_999_MEM_COMPRESS)
+        wrk_len = LZO1X_999_MEM_COMPRESS;
+#endif
+#ifdef USE_LZO1Y
+    if (wrk_len < LZO1Y_999_MEM_COMPRESS)
+        wrk_len = LZO1Y_999_MEM_COMPRESS;
+#endif
+    wrkmem = (lzo_bytep) lzo_malloc(wrk_len);
+    if (wrkmem == NULL)
+    {
+        printf("%s: out of memory\n", progname);
+        exit(1);
+    }
+
+/*
+ * Step 3: open the input file
+ */
+    f = fopen(in_name,"rb");
+    if (f == NULL)
+    {
+        printf("%s: cannot open file %s\n", progname, in_name);
+        exit(1);
+    }
+    fseek(f,0,SEEK_END);
+    l = ftell(f);
+    fseek(f,0,SEEK_SET);
+    if (l <= 0)
+    {
+        printf("%s: %s: empty file\n", progname, in_name);
+        fclose(f);
+        exit(1);
+    }
+    in_len = (lzo_uint) l;
+    out_bufsize = in_len + in_len / 16 + 64 + 3;
+    best_len = in_len;
+
+/*
+ * Step 4: allocate compression buffers and read the file
+ */
+    in = (lzo_bytep) lzo_malloc(in_len);
+    out = (lzo_bytep) lzo_malloc(out_bufsize);
+    if (in == NULL || out == NULL)
+    {
+        printf("%s: out of memory\n", progname);
+        exit(1);
+    }
+    in_len = (lzo_uint) lzo_fread(f,in,in_len);
+    printf("%s: loaded file %s: %ld bytes\n", progname, in_name, (long) in_len);
+    fclose(f);
+
+/*
+ * Step 5: compute a checksum of the uncompressed data
+ */
+    uncompressed_checksum = lzo_adler32(0,NULL,0);
+    uncompressed_checksum = lzo_adler32(uncompressed_checksum,in,in_len);
+
+/*
+ * Step 6a: compress from `in' to `out' with LZO1X-999
+ */
+#ifdef USE_LZO1X
+        out_len = out_bufsize;
+        r = lzo1x_999_compress(in,in_len,out,&out_len,wrkmem);
+        if (r != LZO_E_OK)
+        {
+            /* this should NEVER happen */
+            printf("internal error - compression failed: %d\n", r);
+            exit(1);
+        }
+        printf("LZO1X-999: %8lu -> %8lu\n", (unsigned long) in_len, (unsigned long) out_len);
+        if (out_len < best_len)
+        {
+            best_len = out_len;
+            best_compress = 1;      /* LZO1X-999 */
+        }
+#endif /* USE_LZO1X */
+
+/*
+ * Step 6b: compress from `in' to `out' with LZO1Y-999
+ */
+#ifdef USE_LZO1Y
+        out_len = out_bufsize;
+        r = lzo1y_999_compress(in,in_len,out,&out_len,wrkmem);
+        if (r != LZO_E_OK)
+        {
+            /* this should NEVER happen */
+            printf("internal error - compression failed: %d\n", r);
+            exit(1);
+        }
+        printf("LZO1Y-999: %8lu -> %8lu\n", (unsigned long) in_len, (unsigned long) out_len);
+        if (out_len < best_len)
+        {
+            best_len = out_len;
+            best_compress = 2;      /* LZO1Y-999 */
+        }
+#endif /* USE_LZO1Y */
+
+/*
+ * Step 7: check if compressible
+ */
+    if (best_len >= in_len)
+    {
+        printf("This file contains incompressible data.\n");
+        return 0;
+    }
+
+/*
+ * Step 8: compress data again using the best compressor found
+ */
+    out_len = out_bufsize;
+    if (best_compress == 1)
+        r = lzo1x_999_compress(in,in_len,out,&out_len,wrkmem);
+    else if (best_compress == 2)
+        r = lzo1y_999_compress(in,in_len,out,&out_len,wrkmem);
+    else
+        r = -100;
+    assert(r == LZO_E_OK);
+    assert(out_len == best_len);
+
+/*
+ * Step 9: optimize compressed data (compressed data is in `out' buffer)
+ */
+#if 1
+    /* Optimization does not require any data in the buffer that will
+     * hold the uncompressed data. To prove this, we clear the buffer.
+     */
+    lzo_memset(in,0,in_len);
+#endif
+
+    orig_len = in_len;
+    r = -100;
+#ifdef USE_LZO1X
+    if (best_compress == 1)
+        r = lzo1x_optimize(out,out_len,in,&orig_len,NULL);
+#endif
+#ifdef USE_LZO1Y
+    if (best_compress == 2)
+        r = lzo1y_optimize(out,out_len,in,&orig_len,NULL);
+#endif
+    if (r != LZO_E_OK || orig_len != in_len)
+    {
+        /* this should NEVER happen */
+        printf("internal error - optimization failed: %d\n", r);
+        exit(1);
+    }
+
+/*
+ * Step 10: compute a checksum of the compressed data
+ */
+    compressed_checksum = lzo_adler32(0,NULL,0);
+    compressed_checksum = lzo_adler32(compressed_checksum,out,out_len);
+
+/*
+ * Step 11: write compressed data to a file
+ */
+    printf("%s: %s: %ld -> %ld, checksum 0x%08lx 0x%08lx\n",
+            progname, in_name, (long) in_len, (long) out_len,
+            (long) uncompressed_checksum, (long) compressed_checksum);
+
+    if (out_name && out_name[0])
+    {
+        printf("%s: writing to file %s\n", progname, out_name);
+        f = fopen(out_name,"wb");
+        if (f == NULL)
+        {
+            printf("%s: cannot open output file %s\n", progname, out_name);
+            exit(1);
+        }
+        if (lzo_fwrite(f,out,out_len) != out_len || fclose(f) != 0)
+        {
+            printf("%s: write error !!\n", progname);
+            exit(1);
+        }
+    }
+
+/*
+ * Step 12: verify decompression
+ */
+#ifdef PARANOID
+    lzo_memset(in,0,in_len);    /* paranoia - clear output buffer */
+    orig_len = in_len;
+    r = -100;
+#ifdef USE_LZO1X
+    if (best_compress == 1)
+        r = lzo1x_decompress_safe(out,out_len,in,&orig_len,NULL);
+#endif
+#ifdef USE_LZO1Y
+    if (best_compress == 2)
+        r = lzo1y_decompress_safe(out,out_len,in,&orig_len,NULL);
+#endif
+    if (r != LZO_E_OK || orig_len != in_len)
+    {
+        /* this should NEVER happen */
+        printf("internal error - decompression failed: %d\n", r);
+        exit(1);
+    }
+    if (uncompressed_checksum != lzo_adler32(lzo_adler32(0,NULL,0),in,in_len))
+    {
+        /* this should NEVER happen */
+        printf("internal error - decompression data error\n");
+        exit(1);
+    }
+    /* Now you could also verify decompression under similar conditions as in
+     * your application, e.g. overlapping assembler decompression etc.
+     */
+#endif
+
+    lzo_free(in);
+    lzo_free(out);
+    lzo_free(wrkmem);
+
+    return 0;
+}
+
+/*
+vi:ts=4:et
+*/
+