[FFmpeg-user] ffmpeg mingw compilation 8192 char limits windows 10

[Carl Eugen Hoyos]

> Am 24.12.2018 um 08:29 schrieb Erwan Douaille <douailleerwan at gmail.com>:
> 
> Le mer. 19 déc. 2018 à 15:43, Carl Eugen Hoyos <ceffmpeg at gmail.com> a
> écrit :
> 
>> 2018-12-19 14:39 GMT+01:00, Erwan Douaille <douailleerwan at gmail.com>:
>> 
>>> I´m trying to compile ffmpeg shared with mingw64 on Windows 10.
>>> Here is the configure command:
>>> 
>>>    ./configure --arch=x86_64 --enable-shared --disable-static
>>> --prefix=/e/Downloads/ffmpeg-dyn/
>> 
>> Unrelated: "--arch=x86_64" does not do what you expect it to do,
>> please remove it.
>> 
>>> Everything looks ok.
>>> Then I make:
>>> 
>>>    mingw32-make.exe -j16
>>> 
>>> But I encounter this error:
>>> 
>>>    LD      libswresample/swresample-3.dll
>>>    LD      libswscale/swscale-5.dll
>>>    dlltool -m i386:x86-64 -d libswresample/swresample-3.def -l
>>> libswresample/swresample.lib -D swresample-3.dll
>>>    dlltool -m i386:x86-64 -d libswscale/swscale-5.def -l
>>> libswscale/swscale.lib -D swscale-5.dll
>>>    STRIP   libavcodec/x86/vp9itxfm.o
>>>    GEN     libavcodec/libavcodec.ver
>>>    EXTERN_PREFIX="" AR="ar" NM="nm -g" ./compat/windows/makedef
>>> libavcodec/libavcodec.ver libavcodec/012v.o libavcodec/4xm.o
>>> libavcodec/8bps.o libavcodec/8svx.o libavcodec/a64multienc.o
>>>    ... // SKIP all .o files for stackoverflow
>>>    libavcodec/y41pdec.o libavcodec/y41penc.o libavcodec/ylc.o
>>> libavcodec/yop.o libavcodec/yuv4dec.o libavcodec/yuv4enc.o
>>> libavcodec/zerocodec.o libavcodec/zmbv.o libavcodec/zmbvenc.o >
>>> libavcodec/avcodec-58.def
>>>    Object does not exist: lib
>> 
>> Try:
>> $ make V=1 libavcodec/libavcodec-58.dll
>> 
>> Copy the first part of what is shown (something like "dlltool...")
>> but remove everything beginning with "libavcodec/012v.o" and
>> use "libavcodec/*.o" instead.

> What does --arch=x86_64 do ?

It is needed for cross-compilation but you are not cross-compiling.

> $ mingw32-make.exe V=1 libavcodec/libavcodec-58.dll

I guess this should be:
libavcodec/avcodec-58.dll

Merry Christmas, Carl Eugen