[libpng15] Fixed Windows build issues, enabled ARM compilation. Various warnings

issued by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old GCCs.)
ARM support is enabled by default in zlib.props (unsupported by Microsoft) and
ARM compilation is made possible by deleting the check for x86. The test programs
cannot be run because they are not signed.

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.5.14beta05 - December 19, 2012
+Libpng 1.5.14beta05 - December 21, 2012
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -53,7 +53,12 @@ Version 1.5.14beta04 [December 19, 2012]
   Disassembled the version number in scripts/options.awk (necessary for
     building on SunOs).
 
-Version 1.5.14beta05 [December 19, 2012]
+Version 1.5.14beta05 [December 21, 2012]
+  Fixed Windows build issues, enabled ARM compilation. Various warnings issued by
+    earlier versions of GCC fixed for Cygwin and Min/GW (which both use old GCCs.)
+    ARM support is enabled by default in zlib.props (unsupported by Microsoft) and
+    ARM compilation is made possible by deleting the check for x86. The test programs
+    cannot be run because they are not signed.
 
   ===========================================================================
                        NOTICE November 17, 2012:

CHANGES

@@ -3946,7 +3946,12 @@ Version 1.5.14beta04 [December 19, 2012]
   Disassembled the version number in scripts/options.awk (necessary for
     building on SunOs).
 
-Version 1.5.14beta05 [December 19, 2012]
+Version 1.5.14beta05 [December 21, 2012]
+  Fixed Windows build issues, enabled ARM compilation. Various warnings issued by
+    earlier versions of GCC fixed for Cygwin and Min/GW (which both use old GCCs.)
+    ARM support is enabled by default in zlib.props (unsupported by Microsoft) and
+    ARM compilation is made possible by deleting the check for x86. The test programs
+    cannot be run because they are not signed.
 
   ===========================================================================
                        NOTICE November 17, 2012:

pngconf.h

@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.14beta05 - December 19, 2012
+ * libpng version 1.5.14beta05 - December 21, 2012
  *
  * Copyright (c) 1998-2012 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -177,18 +177,16 @@
  * ==========================
  * This code is used at build time to find PNG_IMPEXP, the API settings
  * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
- * import processing is possible.  On Windows/x86 systems it also sets
+ * import processing is possible.  On Windows systems it also sets
  * compiler-specific macros to the values required to change the calling
  * conventions of the various functions.
  */
-#if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
+#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
-      defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) ) &&\
+    defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
-    ( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
+  /* Windows system (DOS doesn't support DLLs).  Includes builds under Cygwin or
-      defined(_M_X64) || defined(_M_IA64) )
+   * MinGW on any architecture currently supported by Windows.  Also includes
-  /* Windows system (DOS doesn't support DLLs) running on x86/x64.  Includes
+   * Watcom builds but these need special treatment because they are not
-   * builds under Cygwin or MinGW.  Also includes Watcom builds but these need
+   * compatible with GCC or Visual C because of different calling conventions.
-   * special treatment because they are not compatible with GCC or Visual C
-   * because of different calling conventions.
    */
 #  if PNG_API_RULE == 2
     /* If this line results in an error, either because __watcall is not
@@ -202,6 +200,9 @@
 #  if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
 #    define PNGCAPI __cdecl
 #    if PNG_API_RULE == 1
+       /* If this line results in an error __stdcall is not understood and
+        * PNG_API_RULE should not have been set to '1'.
+        */
 #      define PNGAPI __stdcall
 #    endif
 #  else
@@ -239,7 +240,7 @@
 #    endif
 #  endif /* compiler */
 
-#else /* !Windows/x86 */
+#else /* !Windows */
 #  if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
 #    define PNGAPI _System
 #  else /* !Windows/x86 && !OS/2 */

pngwrite.c

@@ -420,7 +420,6 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
 }
 
 #ifdef PNG_CONVERT_tIME_SUPPORTED
-/* "tm" structure is not supported on WindowsCE */
 void PNGAPI
 png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm FAR * ttime)
 {

projects/vstudio/libpng/libpng.vcxproj

@@ -23,8 +23,8 @@
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>libpng</RootNamespace>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>

projects/vstudio/pnglibconf/pnglibconf.vcxproj

@@ -17,6 +17,7 @@
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
   </PropertyGroup>
+  <Import Project="$(SolutionDir)\zlib.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>

projects/vstudio/pngtest/pngtest.vcxproj

@@ -23,8 +23,8 @@
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>pngtest</RootNamespace>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>

projects/vstudio/pngvalid/pngvalid.vcxproj

@@ -23,8 +23,8 @@
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>pngvalid</RootNamespace>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>

projects/vstudio/readme.txt

@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.14beta05 - December 19, 2012
+libpng version 1.5.14beta05 - December 21, 2012
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 

projects/vstudio/zlib.props

@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.14beta05 - December 19, 2012
+ * libpng version 1.5.14beta05 - December 21, 2012
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
@@ -33,5 +33,13 @@
 	 below:
      -->
     <ZLibSrcDir>..\..\..\..\zlib-1.2.5</ZLibSrcDir>
+
+    <!-- The following line allows compilation for an ARM target with Visual
+         Studio 2012.  Notice that this is not supported by the Visual Studio
+         2012 IDE and that the programs that result cannot be run unless they
+         signed by Microsoft.  This is therefore untested; only Microsoft can
+         test it:
+     -->
+    <WindowsSDKDesktopARMSupport>true</WindowsSDKDesktopARMSupport>
   </PropertyGroup>
 </Project>

projects/vstudio/zlib/zlib.vcxproj

@@ -34,8 +34,8 @@
   <PropertyGroup Label="Globals">
     <Keyword>Win32Proj</Keyword>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
   </PropertyGroup>