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diff -ruN orig/ChangeLog src/ChangeLog
--- orig/ChangeLog
+++ src/ChangeLog
@@ -1,6 +1,10 @@
ChangeLog file for zlib
+Changes in 1.2.13 (Qt) (14 Nov 2022)
+- This is a stripped down copy of zlib that contains patches to
+ make it compile as part of Qt. See also "qtpatches.diff".
+
Changes in 1.2.13 (13 Oct 2022)
- Fix configure issue that discarded provided CC definition
- Correct incorrect inputs provided to the CRC functions
diff -ruN orig/gzguts.h src/gzguts.h
--- orig/gzguts.h
+++ src/gzguts.h
@@ -3,6 +3,12 @@
* For conditions of distribution and use, see copyright notice in zlib.h
*/
+#include <qconfig.h>
+
+#ifdef QT_VISIBILITY_AVAILABLE
+#define HAVE_HIDDEN
+#endif
+
#ifdef _LARGEFILE64_SOURCE
# ifndef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE 1
diff -ruN orig/README src/README
--- orig/README
+++ src/README
@@ -6,6 +6,9 @@
http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
rfc1952 (gzip format).
+This is a stripped down copy of zlib that contains patches to make it compile
+as part of Qt. See also "qtpatches.diff".
+
All functions of the compression library are documented in the file zlib.h
(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
of the library is given in the file test/example.c which also tests that
diff -ruN orig/zconf.h src/zconf.h
--- orig/zconf.h
+++ src/zconf.h
@@ -8,6 +8,9 @@
#ifndef ZCONF_H
#define ZCONF_H
+/* Since Qt Core must export these symbols, define Z_PREFIX to avoid clashes system zlib */
+#define Z_PREFIX
+
/*
* If you *really* need a unique prefix for all types and library functions,
* compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
@@ -38,6 +41,9 @@
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
+# define crc32_combine_gen z_crc32_combine_gen
+# define crc32_combine_gen64 z_crc32_combine_gen64
+# define crc32_combine_op z_crc32_combine_op
# define crc32_z z_crc32_z
# define deflate z_deflate
# define deflateBound z_deflateBound
@@ -136,6 +142,7 @@
# endif
# define zlibCompileFlags z_zlibCompileFlags
# define zlibVersion z_zlibVersion
+# define z_errmsg z_z_errmsg
/* all zlib typedefs in zlib.h and zconf.h */
# define Byte z_Byte
@@ -431,7 +438,7 @@
typedef unsigned long z_crc_t;
#endif
-#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
+#if defined(HAVE_UNISTD_H) || !defined(WIN32)
# define Z_HAVE_UNISTD_H
#endif
diff -ruN orig/zlib.h src/zlib.h
--- orig/zlib.h
+++ src/zlib.h
@@ -33,11 +33,15 @@
#include "zconf.h"
+#include <qglobal.h>
+#undef ZEXTERN
+#define ZEXTERN Q_CORE_EXPORT
+
#ifdef __cplusplus
extern "C" {
#endif
-#define ZLIB_VERSION "1.2.13"
+#define ZLIB_VERSION "1.2.13 (Qt)"
#define ZLIB_VERNUM 0x12c0
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 2
diff -ruN orig/zutil.h src/zutil.h
--- orig/zutil.h
+++ src/zutil.h
@@ -13,6 +13,12 @@
#ifndef ZUTIL_H
#define ZUTIL_H
+#include <qconfig.h>
+
+#ifdef QT_VISIBILITY_AVAILABLE
+#define HAVE_HIDDEN
+#endif
+
#ifdef HAVE_HIDDEN
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
@@ -143,6 +149,11 @@
# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
# include <unix.h> /* for fdopen */
# else
+// We need to include stdio.h here because zlib.h will include TargetConditionals.h
+// This will define TARGET_OS_MAC that leads to this check.
+// Since zutil.h will include gzguts.h and gzguts.h includes stdio.h
+// AFTER check for fdopen we need to include stdio.h directly
+# include <stdio.h>
# ifndef fdopen
# define fdopen(fd,mode) NULL /* No fdopen() */
# endif
@@ -166,7 +177,7 @@
# define OS_CODE 18
#endif
-#ifdef __APPLE__
+#if defined(__APPLE__) && !defined(OS_CODE)
# define OS_CODE 19
#endif
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