Hi,
On the trunk, we no longer need __USE_MINGW_OUTPUT_FORMAT_EMU nor
__mingw_set_output_format. We use linker tricks to do the work without
any user action:
http://repo.or.cz/w/mingw-w64/jacek.git/commitdiff/53e6165916a0cdc4d096bff13ce60cb825def2f2
Note that the change affected both headers and crt, so a mismatch in
their version could explain your problem.
Cheers,
Jacek
On 02/20/14 10:20, Sebastian Wolff wrote:
> Dear list,
>
> I finally found a solution.
>
> The dirty fix is to add an additional define in each compiler call. A
> better way is to modify the spec file of GCC. Therein you need to add
> the following define at an appropriate place:
>
> -D__USE_MINGW_OUTPUT_FORMAT_EMU=0
>
>
> By default, MinGW assumes __USE_MINGW_OUTPUT_FORMAT_EMU=1 It is this
> assumption which leads to the missing linker symbols and I suggest to
> change the default in later versions of MinGW/GCC. The define is used
> in stdio.h to change the ident of the MSVCRT function from
> _set_output_format to __mingw_set_output_format.
>
> Best regards
> Sebastian
>
> On 19 Feb 2014, at 17:05, Sebastian Wolff <sebastian.wo...@dynardo.at
> <mailto:sebastian.wo...@dynardo.at>> wrote:
>
>> Dear list,
>>
>> today I upgraded from a SVN revision from March 2013 of the MinGW-w64
>> runtime to version 3.1.0. I use the open build service provided by
>> the openSUSE community to install my cross compiler framework (based
>> on openSuse Linux 12.2). GCC version is 4.8.2. Target system is x64.
>>
>> Since the upgrade I face the following problem:
>>
>> The Linker command terminates with error message
>> Undefined symbol: __mingw_set_output_format
>>
>> There are no other errors. In my source code we use the MSVCRT
>> function _set_output_format. It seems that GCC is replacing this
>> symbol automatically by mingw_set_output_format. I believe, if that
>> would not be the case, the linker should go fine since
>> _set_output_format is actually provided by libmsvcrt.a
>>
>> Any ideas on what I could do about this ?
>>
>> Best regards
>> Sebastian
>
>
>
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