Rename more symbols

externals/patches/SDL2_ttf-2.20.1.patch

@@ -456,3 +456,87 @@ index 14f0f1a..c7c4bf9 100644
  #endif
  
  #endif  /* !Z_FREETYPE */
+diff --git a/external/freetype/src/gzip/ftzconf.h b/external/freetype/src/gzip/ftzconf.h
+index 5e1d68a..43d2fed 100644
+--- a/external/freetype/src/gzip/ftzconf.h
++++ b/external/freetype/src/gzip/ftzconf.h
+@@ -129,13 +129,13 @@
+ #    define uncompress            z_uncompress
+ #    define uncompress2           z_uncompress2
+ #  endif
+-#  define zError                z_zError
++#  define zError                _z_zError
+ #  ifndef Z_SOLO
+-#    define zcalloc               z_zcalloc
+-#    define zcfree                z_zcfree
++#    define zcalloc               _z_zcalloc
++#    define zcfree                _z_zcfree
+ #  endif
+-#  define zlibCompileFlags      z_zlibCompileFlags
+-#  define zlibVersion           z_zlibVersion
++#  define zlibCompileFlags      _z_zlibCompileFlags
++#  define zlibVersion           _z_zlibVersion
+ 
+ /* all zlib typedefs in zlib.h and zconf.h */
+ #  define Byte                  z_Byte
+diff --git a/external/freetype/src/gzip/patches/freetype-zlib.diff b/external/freetype/src/gzip/patches/freetype-zlib.diff
+index 20d8429..1be478c 100644
+--- a/external/freetype/src/gzip/patches/freetype-zlib.diff
++++ b/external/freetype/src/gzip/patches/freetype-zlib.diff
+@@ -339,7 +339,7 @@ diff --git a/src/gzip/zutil.h b/src/gzip/zutil.h
+ index d9a20ae1b..14f0f1a85 100644
+ --- a/src/gzip/zutil.h
+ +++ b/src/gzip/zutil.h
+-@@ -188,6 +188,8 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
++@@ -188,6 +188,8 @@ extern z_const char * const _z_errmsg[10]; /* indexed by 2-zlib_error */
+    #pragma warn -8066
+  #endif
+  
+@@ -348,7 +348,7 @@ index d9a20ae1b..14f0f1a85 100644
+  /* provide prototypes for these when building zlib without LFS */
+  #if !defined(_WIN32) && \
+      (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
+-@@ -195,6 +197,8 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
++@@ -195,6 +197,8 @@ extern z_const char * const _z_errmsg[10]; /* indexed by 2-zlib_error */
+      ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
+  #endif
+  
+@@ -357,7 +357,7 @@ index d9a20ae1b..14f0f1a85 100644
+          /* common defaults */
+  
+  #ifndef OS_CODE
+-@@ -226,9 +230,9 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
++@@ -226,9 +230,9 @@ extern z_const char * const _z_errmsg[10]; /* indexed by 2-zlib_error */
+  #    define zmemcmp _fmemcmp
+  #    define zmemzero(dest, len) _fmemset(dest, 0, len)
+  #  else
+diff --git a/external/freetype/src/gzip/zutil.c b/external/freetype/src/gzip/zutil.c
+index a19ac2b..3d5004b 100644
+--- a/external/freetype/src/gzip/zutil.c
++++ b/external/freetype/src/gzip/zutil.c
+@@ -10,7 +10,7 @@
+ #  include "gzguts.h"
+ #endif
+ 
+-z_const char * const z_errmsg[10] = {
++z_const char * const _z_errmsg[10] = {
+     (z_const char *)"need dictionary",     /* Z_NEED_DICT       2  */
+     (z_const char *)"stream end",          /* Z_STREAM_END      1  */
+     (z_const char *)"",                    /* Z_OK              0  */
+diff --git a/external/freetype/src/gzip/zutil.h b/external/freetype/src/gzip/zutil.h
+index 14f0f1a..6a354c4 100644
+--- a/external/freetype/src/gzip/zutil.h
++++ b/external/freetype/src/gzip/zutil.h
+@@ -53,10 +53,10 @@ typedef unsigned long  ulg;
+ #  endif
+ #endif
+ 
+-extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
++extern z_const char * const _z_errmsg[10]; /* indexed by 2-zlib_error */
+ /* (size given to avoid silly warnings with Visual C++) */
+ 
+-#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
++#define ERR_MSG(err) _z_errmsg[Z_NEED_DICT-(err)]
+ 
+ #define ERR_RETURN(strm,err) \
+   return (strm->msg = ERR_MSG(err), (err))