zlib now linked dinamicaly

git-svn-id: http://svn.miranda-ng.org/main/trunk@3766 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

9 files changed, 104 insertions, 68 deletions

diff --git a/plugins/FTPFileYM/ftpfile_10.vcxproj b/plugins/FTPFileYM/ftpfile_10.vcxproj
index c484202358..987491f67f 100644
--- a/plugins/FTPFileYM/ftpfile_10.vcxproj
+++ b/plugins/FTPFileYM/ftpfile_10.vcxproj
@@ -82,8 +82,8 @@
       <FavorSizeOrSpeed>Size</FavorSizeOrSpeed>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl32.lib;comctl32.lib;zlib.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl32.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <OptimizeReferences>true</OptimizeReferences>

@@ -110,8 +110,8 @@
       <FavorSizeOrSpeed>Size</FavorSizeOrSpeed>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl64.lib;comctl32.lib;zlib64.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl64.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <OptimizeReferences>true</OptimizeReferences>

@@ -139,8 +139,8 @@
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld32.lib;comctl32.lib;zlib.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld32.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <RandomizedBaseAddress>false</RandomizedBaseAddress>

@@ -164,8 +164,8 @@
       <WarningLevel>Level3</WarningLevel>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld64.lib;comctl32.lib;zlib64.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld64.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin10\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <ImportLibrary>$(IntDir)$(TargetName).lib</ImportLibrary>

@@ -224,6 +224,9 @@
     <ResourceCompile Include="res\version.rc" />

   </ItemGroup>

   <ItemGroup>

+    <ProjectReference Include="..\Zlib\zlib_10.vcxproj">

+      <Project>{e2a369cd-eda3-414f-8ad0-e732cd7ee68c}</Project>

+    </ProjectReference>

     <ProjectReference Include="curl-7.29.0\lib\vc6libcurl_10.vcxproj">

       <Project>{01f9e227-06f5-4bed-907f-402ca7dfafe6}</Project>

     </ProjectReference>

diff --git a/plugins/FTPFileYM/ftpfile_11.vcxproj b/plugins/FTPFileYM/ftpfile_11.vcxproj
index ba6bfbec89..d5499ffdac 100644
--- a/plugins/FTPFileYM/ftpfile_11.vcxproj
+++ b/plugins/FTPFileYM/ftpfile_11.vcxproj
@@ -86,8 +86,8 @@
       <FavorSizeOrSpeed>Size</FavorSizeOrSpeed>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl32.lib;comctl32.lib;zlib.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl32.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <OptimizeReferences>true</OptimizeReferences>

@@ -114,8 +114,8 @@
       <FavorSizeOrSpeed>Size</FavorSizeOrSpeed>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl64.lib;comctl32.lib;zlib64.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurl64.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <OptimizeReferences>true</OptimizeReferences>

@@ -143,8 +143,8 @@
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld32.lib;comctl32.lib;zlib.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld32.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <RandomizedBaseAddress>false</RandomizedBaseAddress>

@@ -168,8 +168,8 @@
       <WarningLevel>Level3</WarningLevel>

     </ClCompile>

     <Link>

-      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld64.lib;comctl32.lib;zlib64.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>lib;$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

+      <AdditionalDependencies>wldap32.lib;ws2_32.lib;winmm.lib;libcurld64.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+      <AdditionalLibraryDirectories>$(ProfileDir)..\..\bin11\lib</AdditionalLibraryDirectories>

       <GenerateDebugInformation>true</GenerateDebugInformation>

       <SubSystem>Windows</SubSystem>

       <ImportLibrary>$(IntDir)$(TargetName).lib</ImportLibrary>

@@ -228,6 +228,9 @@
     <ResourceCompile Include="res\version.rc" />

   </ItemGroup>

   <ItemGroup>

+    <ProjectReference Include="..\Zlib\zlib_11.vcxproj">

+      <Project>{e2a369cd-eda3-414f-8ad0-e732cd7ee68c}</Project>

+    </ProjectReference>

     <ProjectReference Include="curl-7.29.0\lib\vc6libcurl_11.vcxproj">

       <Project>{01f9e227-06f5-4bed-907f-402ca7dfafe6}</Project>

     </ProjectReference>

diff --git a/plugins/FTPFileYM/lib/zlib.lib b/plugins/FTPFileYM/lib/zlib.lib
deleted file mode 100644
index 33f583fb5f..0000000000
--- a/plugins/FTPFileYM/lib/zlib.lib
+++ /dev/null
diff --git a/plugins/FTPFileYM/lib/zlib64.lib b/plugins/FTPFileYM/lib/zlib64.lib
deleted file mode 100644
index 3bb413f686..0000000000
--- a/plugins/FTPFileYM/lib/zlib64.lib
+++ /dev/null
diff --git a/plugins/FTPFileYM/src/job_packer.cpp b/plugins/FTPFileYM/src/job_packer.cpp
index 2e81e57c89..51fa387860 100644
--- a/plugins/FTPFileYM/src/job_packer.cpp
+++ b/plugins/FTPFileYM/src/job_packer.cpp
@@ -141,9 +141,7 @@ int PackerJob::createZipFile()
 {

 	int result = ZIP_ERRNO;

 

-	char *filePath = mir_t2a(this->stzFilePath);

-	zipFile zf = zipOpen2(filePath, 0, NULL, NULL);

-	FREE(filePath);

+	zipFile zf = zipOpen2_64(this->stzFilePath, 0, NULL, NULL);

 

 	if (zf != NULL)

 	{

diff --git a/plugins/FTPFileYM/src/zip/ioapi.c b/plugins/FTPFileYM/src/zip/ioapi.c
index 49958f61ff..4219ed1f24 100644
--- a/plugins/FTPFileYM/src/zip/ioapi.c
+++ b/plugins/FTPFileYM/src/zip/ioapi.c
@@ -10,7 +10,7 @@
 
 */
 
-#if (defined(_WIN32))
+#if (defined(_WIN32) && !defined(_CRT_SECURE_NO_WARNINGS))
         #define _CRT_SECURE_NO_WARNINGS
 #endif
 
@@ -22,7 +22,7 @@ voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename
         return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
     else
     {
-        return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
+        return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const TCHAR*)filename,mode);
     }
 }
 
@@ -32,11 +32,22 @@ long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZP
         return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
     else
     {
-        uLong offsetTruncated = (uLong)offset;
-        if (offsetTruncated != offset)
-            return -1;
-        else
-            return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
+		if (origin == ZLIB_FILEFUNC_SEEK_SET)
+		{
+			uLong offsetTruncated = (uLong)offset;
+			if (offsetTruncated != offset)
+				return -1;
+			else
+				return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
+		}
+		else
+		{
+			long offsetTruncated = (long)(__int64)offset;
+			if (offsetTruncated != (__int64)offset)
+				return -1;
+			else
+				return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
+		}
     }
 }
 
@@ -72,7 +83,7 @@ void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filef
 
 
 
-static voidpf  ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
+static voidpf  ZCALLBACK fopen_file_func OF((voidpf opaque, const TCHAR* filename, int mode));
 static uLong   ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
 static uLong   ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));
 static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
@@ -80,39 +91,39 @@ static long    ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPO
 static int     ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
 static int     ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
 
-static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
+static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const TCHAR* filename, int mode)
 {
     FILE* file = NULL;
-    const char* mode_fopen = NULL;
+    const TCHAR* mode_fopen = NULL;
     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
-        mode_fopen = "rb";
+        mode_fopen = _T("rb");
     else
     if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
-        mode_fopen = "r+b";
+        mode_fopen = _T("r+b");
     else
     if (mode & ZLIB_FILEFUNC_MODE_CREATE)
-        mode_fopen = "wb";
+        mode_fopen = _T("wb");
 
     if ((filename!=NULL) && (mode_fopen != NULL))
-        file = fopen(filename, mode_fopen);
+        file = _tfopen(filename, mode_fopen);
     return file;
 }
 
 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
 {
     FILE* file = NULL;
-    const char* mode_fopen = NULL;
+    const TCHAR* mode_fopen = NULL;
     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
-        mode_fopen = "rb";
+        mode_fopen = _T("rb");
     else
     if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
-        mode_fopen = "r+b";
+        mode_fopen = _T("r+b");
     else
     if (mode & ZLIB_FILEFUNC_MODE_CREATE)
-        mode_fopen = "wb";
+        mode_fopen = _T("wb");
 
     if ((filename!=NULL) && (mode_fopen != NULL))
-        file = fopen64((const char*)filename, mode_fopen);
+        file = _tfopen((const TCHAR*)filename, mode_fopen);
     return file;
 }
 
@@ -188,7 +199,7 @@ static long ZCALLBACK fseek64_file_func (voidpf  opaque, voidpf stream, ZPOS64_T
     }
     ret = 0;
 
-    if(fseeko64((FILE *)stream, offset, fseek_origin) != 0)
+    if (fseeko64((FILE *)stream, offset, fseek_origin) != 0)
                         ret = -1;
 
     return ret;
diff --git a/plugins/FTPFileYM/src/zip/ioapi.h b/plugins/FTPFileYM/src/zip/ioapi.h
index 8309c4cf8f..3fc4d0324b 100644
--- a/plugins/FTPFileYM/src/zip/ioapi.h
+++ b/plugins/FTPFileYM/src/zip/ioapi.h
@@ -40,6 +40,7 @@
         #endif
 #endif
 
+#include <tchar.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "zlib.h"
@@ -56,7 +57,7 @@
   #define fseeko64 _fseeki64
  #else // old MSC
   #define ftello64 ftell
-  #define fseeko64 fseek
+  #define fseeko64(a, b, c) fseek(a, (long)b, c)
  #endif
 #endif
 #endif
@@ -124,7 +125,7 @@ extern "C" {
 
 
 
-typedef voidpf   (ZCALLBACK *open_file_func)      OF((voidpf opaque, const char* filename, int mode));
+typedef voidpf   (ZCALLBACK *open_file_func)      OF((voidpf opaque, const TCHAR* filename, int mode));
 typedef uLong    (ZCALLBACK *read_file_func)      OF((voidpf opaque, voidpf stream, void* buf, uLong size));
 typedef uLong    (ZCALLBACK *write_file_func)     OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
 typedef int      (ZCALLBACK *close_file_func)     OF((voidpf opaque, voidpf stream));
diff --git a/plugins/FTPFileYM/src/zip/zconf.h b/plugins/FTPFileYM/src/zip/zconf.h
index 58880245c1..02ce56c431 100644
--- a/plugins/FTPFileYM/src/zip/zconf.h
+++ b/plugins/FTPFileYM/src/zip/zconf.h
@@ -315,10 +315,6 @@
 #  endif
 #endif
 
-#ifdef HAVE_VISIBILITY_PRAGMA
-#  define ZEXTERN __attribute__((visibility ("default"))) extern
-#endif
-
 #ifndef ZEXTERN
 #  define ZEXTERN extern
 #endif
@@ -364,8 +360,21 @@ typedef uLong FAR uLongf;
 #  define Z_HAVE_UNISTD_H
 #endif
 
-#ifdef Z_HAVE_UNISTD_H
+#ifdef STDC
 #  include <sys/types.h>    /* for off_t */
+#endif
+
+/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
+ * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
+ * though the former does not conform to the LFS document), but considering
+ * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
+ * equivalently requesting no 64-bit operations
+ */
+#if -_LARGEFILE64_SOURCE - -1 == 1
+#  undef _LARGEFILE64_SOURCE
+#endif
+
+#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
 #  include <unistd.h>       /* for SEEK_* and off_t */
 #  ifdef VMS
 #    include <unixio.h>     /* for off_t */
@@ -375,19 +384,22 @@ typedef uLong FAR uLongf;
 #  endif
 #endif
 
-#ifdef _LARGEFILE64_SOURCE
-#  include <sys/types.h>
-#endif
-
 #ifndef SEEK_SET
 #  define SEEK_SET        0       /* Seek from beginning of file.  */
 #  define SEEK_CUR        1       /* Seek from current position.  */
 #  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
 #endif
+
 #ifndef z_off_t
 #  define z_off_t long
 #endif
 
+#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
+#  define z_off64_t off64_t
+#else
+#  define z_off64_t z_off_t
+#endif
+
 #if defined(__OS400__)
 #  define NO_vsnprintf
 #endif
diff --git a/plugins/FTPFileYM/src/zip/zlib.h b/plugins/FTPFileYM/src/zip/zlib.h
index f5785be7e0..bfbba83e8e 100644
--- a/plugins/FTPFileYM/src/zip/zlib.h
+++ b/plugins/FTPFileYM/src/zip/zlib.h
@@ -1,5 +1,5 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.4, Mar 14th, 2010
+  version 1.2.5, April 19th, 2010
 
   Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
 
@@ -37,11 +37,11 @@
 extern "C" {
 #endif
 
-#define ZLIB_VERSION "1.2.4"
-#define ZLIB_VERNUM 0x1240
+#define ZLIB_VERSION "1.2.5"
+#define ZLIB_VERNUM 0x1250
 #define ZLIB_VER_MAJOR 1
 #define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 4
+#define ZLIB_VER_REVISION 5
 #define ZLIB_VER_SUBREVISION 0
 
 /*
@@ -1556,29 +1556,35 @@ ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
         inflateBackInit_((strm), (windowBits), (window), \
                                             ZLIB_VERSION, sizeof(z_stream))
 
-#ifdef _LARGEFILE64_SOURCE
+/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
+ * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
+ * both are true, the application gets the *64 functions, and the regular
+ * functions are changed to 64 bits) -- in case these are set on systems
+ * without large file support, _LFS64_LARGEFILE must also be true
+ */
+#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
    ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
-   ZEXTERN off64_t ZEXPORT gzseek64 OF((gzFile, off64_t, int));
-   ZEXTERN off64_t ZEXPORT gztell64 OF((gzFile));
-   ZEXTERN off64_t ZEXPORT gzoffset64 OF((gzFile));
-   ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, off64_t));
-   ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, off64_t));
+   ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
+   ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
+   ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
+   ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
+   ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
 #endif
 
-#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS == 64
+#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0
 #  define gzopen gzopen64
 #  define gzseek gzseek64
 #  define gztell gztell64
 #  define gzoffset gzoffset64
 #  define adler32_combine adler32_combine64
 #  define crc32_combine crc32_combine64
-#  ifndef _LARGEFILE64_SOURCE
+#  ifdef _LARGEFILE64_SOURCE
      ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
-     ZEXTERN off_t ZEXPORT gzseek64 OF((gzFile, off_t, int));
-     ZEXTERN off_t ZEXPORT gztell64 OF((gzFile));
-     ZEXTERN off_t ZEXPORT gzoffset64 OF((gzFile));
-     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, off_t));
-     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, off_t));
+     ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
+     ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
+     ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
+     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
+     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
 #  endif
 #else
    ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
@@ -1589,10 +1595,12 @@ ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
    ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
 #endif
 
+/* hack for buggy compilers */
 #if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
-    struct internal_state {int dummy;}; /* hack for buggy compilers */
+    struct internal_state {int dummy;};
 #endif
 
+/* undocumented functions */
 ZEXTERN const char   * ZEXPORT zError           OF((int));
 ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp));
 ZEXTERN const uLongf * ZEXPORT get_crc_table    OF((void));