$NetBSD: patch-af,v 1.3 2012/07/18 22:10:21 marino Exp $

- don't declare own errno
- fix build failure where gzgetc() is a macro (seen in a recent Linux
  bulk build)

XXX: what this code is doing (mixing gzFile* and FILE* indiscriminately
XXX: without even casting) is vile and will probably stop compiling at
XXX: some point.

JRM: That point arrived.  The garbage spewed when compiled with
JRM: zlib >= 1.2.6.  Cast gzFile everywhere to fix it.
JRM: David's gzgetc fix was changed; it broke too.

--- misc/archive.c.orig	2004-12-12 01:16:54.000000000 +0000
+++ misc/archive.c
@@ -48,9 +48,6 @@ Foundation, Inc., 675 Mass Ave, Cambridg
 #define MAXBUFSIZE 32768
 
 
-extern int errno;
-
-
 int
 fsizeof (const char *filename)
 // If USE_ZLIB is defined this function is very slow. Please avoid to use
@@ -84,15 +81,15 @@ fsizeof (const char *filename)
         }
 #if 1
       // This is not much faster than the other method
-      while (!gzeof (file))
-        gzseek (file, 1024 * 1024, SEEK_CUR);
-      size = gztell (file);
+      while (!gzeof ((gzFile)file))
+        gzseek ((gzFile)file, 1024 * 1024, SEEK_CUR);
+      size = gztell ((gzFile)file);
 #else
       // Is there a more efficient way to determine the uncompressed size?
       while ((bytesread = gzread (file, buf, MAXBUFSIZE)) > 0)
         size += bytesread;
 #endif
-      gzclose (file);
+      gzclose ((gzFile)file);
       return size;
     }
   else if (magic[0] == 'P' && magic[1] == 'K' && magic[2] == 0x03 && magic[3] == 0x04)
@@ -384,7 +381,7 @@ fclose2 (FILE *file)
   if (fmode == FM_NORMAL)
     return fclose (file);
   else if (fmode == FM_GZIP)
-    return gzclose (file);
+    return gzclose ((gzFile)file);
   else if (fmode == FM_ZIP)
     {
       unzCloseCurrentFile (file);
@@ -416,12 +413,12 @@ fseek2 (FILE *file, long offset, int mod
       if (mode == SEEK_END)                     // zlib doesn't support SEEK_END
         {
           // Note that this is _slow_...
-          while (!gzeof (file))
+          while (!gzeof ((gzFile)file))
             {
-              gzgetc (file); // necessary for _uncompressed_ files in order to set EOF
-              gzseek (file, 1024 * 1024, SEEK_CUR);
+              gzgetc ((gzFile)file); // necessary for _uncompressed_ files in order to set EOF
+              gzseek ((gzFile)file, 1024 * 1024, SEEK_CUR);
             }
-          offset += gztell (file);
+          offset += gztell ((gzFile)file);
           mode = SEEK_SET;
         }
       /*
@@ -433,8 +430,8 @@ fseek2 (FILE *file, long offset, int mod
         DJGPP, Cygwin & GNU/Linux). It clears the EOF indicator.
       */
       if (!finfo->compressed)
-        gzrewind (file);
-      return gzseek (file, offset, mode) == -1 ? -1 : 0;
+        gzrewind ((gzFile)file);
+      return gzseek ((gzFile)file, offset, mode) == -1 ? -1 : 0;
     }
   else if (finfo->fmode == FM_ZIP)
     {
@@ -476,7 +473,7 @@ fread2 (void *buffer, size_t size, size_
     return fread (buffer, size, number, file);
   else if (fmode == FM_GZIP)
     {
-      int n = gzread (file, buffer, number * size);
+      int n = gzread ((gzFile)file, buffer, number * size);
       return n / size;
     }
   else if (fmode == FM_ZIP)
@@ -498,7 +495,7 @@ fgetc2 (FILE *file)
   if (fmode == FM_NORMAL)
     return fgetc (file);
   else if (fmode == FM_GZIP)
-    return gzgetc (file);
+    return gzgetc ((gzFile)file);
   else if (fmode == FM_ZIP)
     {
       char c;
@@ -521,7 +518,7 @@ fgets2 (char *buffer, int maxlength, FIL
     return fgets (buffer, maxlength, file);
   else if (fmode == FM_GZIP)
     {
-      char *retval = gzgets (file, buffer, maxlength);
+      char *retval = gzgets ((gzFile)file, buffer, maxlength);
       return retval == Z_NULL ? NULL : retval;
     }
   else if (fmode == FM_ZIP)
@@ -556,7 +553,7 @@ feof2 (FILE *file)
   if (fmode == FM_NORMAL)
     return feof (file);
   else if (fmode == FM_GZIP)
-    return gzeof (file);
+    return gzeof ((gzFile)file);
   else if (fmode == FM_ZIP)
     return unzeof (file);                       // returns feof() of the "current file"
   else
@@ -578,7 +575,7 @@ fwrite2 (const void *buffer, size_t size
     return fwrite (buffer, size, number, file);
   else if (fmode == FM_GZIP)
     {
-      int n = gzwrite (file, (void *) buffer, number * size);
+      int n = gzwrite ((gzFile)file, (void *) buffer, number * size);
       return n / size;
     }
   else
@@ -596,7 +593,7 @@ fputc2 (int character, FILE *file)
   if (fmode == FM_NORMAL)
     return fputc (character, file);
   else if (fmode == FM_GZIP)
-    return gzputc (file, character);
+    return gzputc ((gzFile)file, character);
   else
     return EOF;                                 // writing to zip files is not supported
 #define fputc   fputc2
@@ -612,7 +609,7 @@ ftell2 (FILE *file)
   if (fmode == FM_NORMAL)
     return ftell (file);
   else if (fmode == FM_GZIP)
-    return gztell (file);
+    return gztell ((gzFile)file);
   else if (fmode == FM_ZIP)
     return unztell (file);                      // returns ftell() of the "current file"
   else