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Fri Jan 12 22:05:49 CET 2007 · https://ffmpeg.org/pipermail/ffmpeg-devel/2007-January/027318.html

Luca Barbato wrote:
> Cool_Zer0 wrote:
>> I don't have any libm inside that folder... But I have the libm of my 
>> standard GCC...
>> I'm using the cross-compiler available on VLC: 
>> http://download.videolan.org/pub/testing/wince/
>
> build one yourself it shouldn't _that_ hard.
>
>>
>> I've been searching on google but I can't find other cross compiler 
>> for Windows CE... Do you know of any useful link?
>
> gcc is perfectly fine, just find the instructions on how to deploy it 
> or use a distribution providing it...
>
>>
>> By the way.. Do you think that with cross-compiling I can compile 
>> FFMpeg and use the .lib on Visual C++ projects?
>
> as usual, if you use an ide that can understand msvc project files and 
> uses gcc to compile and link you'll be fine, otherwise you may have to 
> experience any sort of pain because of the nonstandard C compiler 
> provided by microsoft.
>
> lu
>

Looks like I've been able to compile FFMpeg with the correct 
"arm-wince-cegcc". My configure looks like this:
# ./configure --cross-compile 
--cross-prefix=/usr/ppc/arm-wince-cegcc/bin/ --arch=armv4l 
--enable-memalign-hack --disable-ipv6 --prefix=/usr/local/wince 
--log=yes --disable-encoders --disable-decoders --disable-parsers 
--disable-muxers --disable-demuxers --enable-parser=h263 
--enable-encoder=h263 --enable-decoder=h263 --enable-muxer=h263 
--enable-demuxer=h263 --disable-ffserver --disable-ffplay 
--disable-ffmpeg --disable-network

Not I want to have the libavformat.lib and libavcodec.lib and to do that 
I add this tags "--enable-shared --disable-static".

Result:
(...)
make[1]: Entering directory `/root/ffmpeg/libavformat'
/usr/ppc/arm-wince-cegcc/bin/gcc -shared -Wl,-soname,libavformat.so.51 
-Wl,--warn-common  -Wl,--as-needed 
-Wl,-rpath-link,"/root/ffmpeg"/libavcodec 
-Wl,-rpath-link,"/root/ffmpeg"/libavformat 
-Wl,-rpath-link,"/root/ffmpeg"/libavutil -o libavformat.so.51 utils.o 
cutils.o os_support.o allformats.o framehook.o avio.o aviobuf.o file.o 
raw.o -L"/root/ffmpeg"/libavutil -lavutil -lavcodec 
-L"/root/ffmpeg"/libavcodec -lm
Info: resolving __ctype_ptr by linking to __imp___ctype_ptr (auto-import)
/root/ffmpeg/libavcodec/libavcodec.a(utils.o): In function `init_crcs':
/root/ffmpeg/libavcodec/utils.c:1187: undefined reference to `av_crc_init'
/root/ffmpeg/libavcodec/utils.c:1188: undefined reference to `av_crc_init'
/root/ffmpeg/libavcodec/utils.c:1189: undefined reference to `av_crc_init'
/root/ffmpeg/libavcodec/libavcodec.a(utils.o): In function 
`av_fast_realloc':
/root/ffmpeg/libavcodec/utils.c:72: undefined reference to `av_crc04C11DB7'
/root/ffmpeg/libavcodec/utils.c:72: undefined reference to `av_crc8005'
/root/ffmpeg/libavcodec/utils.c:72: undefined reference to `av_crc07'
collect2: ld returned 1 exit status
make[1]: *** [libavformat.so.51] Error 1
make[1]: Leaving directory `/root/ffmpeg/libavformat'
make: *** [lib] Error 2

Any expert knows why I'm getting this error?

Thanks

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[Ffmpeg-devel] Cross Compiling to Windows CE