Re: [Libjpeg-turbo-devel] problem when using jmorecfg.h and windows.h

[DRC <dco...@us...>]

Oops.  Sorry.  I replied twice.  Ignore the previous reply.  I had not 
fully examined IJG's fix when I wrote that.

On 4/18/14 3:57 AM, DRC wrote:
> This was fixed a long time ago (in 1.2 beta.)  How are you building
> libjpeg-turbo, or where are you getting your build?
>
> I'm suspicious of the fact that your build of libjpeg-turbo resides in
> c:/MinGW/msys/1.0/opt/libjpeg-turbo.  /opt/libjpeg-turbo is generally
> used for Unix builds, not Windows builds.  Methinks someone may have
> gotten too creative with distributing or building our code.
>
> The Windows versions of libjpeg-turbo (except for Cygwin, which is
> treated as a Unix build) are built with CMake instead of autotools, and
> the CMake build system generates a special version of jconfig.h just for
> Windows.  That special version of jconfig.h includes code to work around
> the INT32 conflict.  Note that IJG also has their own fix for this
> issue, in jmorecfg.h.  Their fix, however, does not work if jpeglib.h is
> included before windows.h.  Ours does.  Also, it made more sense to me
> to include our fix in a header that was only distributed on Windows, but
> if a distributor included the wrong version of jconfig.h in the
> distribution, then the problem you're observing could occur.  I suspect
> you might just be using an old version.  Install our official package
> (libjpeg-turbo-gcc64.exe), which puts libjpeg-turbo in
> c:/libjpeg-turbo-gcc64/, and use that when building your code instead.
>
>
> On 4/18/14 2:30 AM, Vincent Torri wrote:
>> hello
>>
>> I'm compiling a library on Windows using libjpeg-turbo and mingw-w64
>> v3 (using 64 bits toolchain) and I get that error :
>>
>>    CC       eet_image.lo
>> In file included from
>> C:/MinGW/msys/1.0/opt/libjpeg-turbo/include/jpeglib.h:29:0,
>>                   from eet_image.c:38:
>> C:/MinGW/msys/1.0/opt/libjpeg-turbo/include/jmorecfg.h:163:14: error:
>> conflicting types for 'INT32'
>>   typedef long INT32;
>>                ^
>> In file included from
>> c:\mingw\msys\1.0\opt\windows_64\x86_64-w64-mingw32\include\winnt.h:134:0,
>>
>>                   from
>> c:\mingw\msys\1.0\opt\windows_64\x86_64-w64-mingw32\include\minwindef.h:146,
>>
>>                   from
>> c:\mingw\msys\1.0\opt\windows_64\x86_64-w64-mingw32\include\windef.h:8,
>>                   from
>> c:\mingw\msys\1.0\opt\windows_64\x86_64-w64-mingw32\include\windows.h:69,
>>                   from
>> c:\mingw\msys\1.0\opt\windows_64\x86_64-w64-mingw32\include\winsock2.h:23,
>>
>>                   from eet_image.c:30:
>> c:\mingw\msys\1.0\opt\windows_64\x86_64-w64-mingw32\include\basetsd.h:31:22:
>>
>> note: previous declaration of 'INT32' was h
>> ere
>>     typedef signed int INT32,*PINT32;
>>                        ^
>>
>> that library includes jpeglib.h after windows.h (if I include it
>> before, i get other similar errors)
>>
>> in addition, INT32 and al types already exists on Windows :
>> http://msdn.microsoft.com/en-us/library/windows/desktop/aa383751%28v=vs.85%29.aspx
>>
>>
>> Is there a solution to that problem ?
>>
>> thank you
>>
>> Vincent Torri