[FFmpeg-devel] ffmpeg cygwin error assert_func fpclassifyd

chetan mathad mathad.chetan
Wed Dec 8 16:24:07 CET 2010


Hi, Team ;


I am a new entry to this field.
I am using ffmpeg for encoding and decoding video streams,

When i build using cygwin i am successful in building so but i got a ton of
linking errors.
I went through all the forum support by ffmpeg mplayer and was able to
reduce the value of ton to 11 linking errors,.
Later i failed to reduce these. Kindly help me.

The errors are as follows


libavcodec.a(utils.o) : error LNK2001: unresolved external symbol
__imp____ctype_ptr__
libavutil.a(eval.o) : error LNK2001: unresolved external symbol
__imp____ctype_ptr__
libavcodec.a(ratecontrol.o) : error LNK2001: unresolved external symbol
___fpclassifyd
libavutil.a(rational.o) : error LNK2001: unresolved external symbol
___fpclassifyd
libavutil.a(eval.o) : error LNK2001: unresolved external symbol
___fpclassifyd
libavcodec.a(ratecontrol.o) : error LNK2001: unresolved external symbol
___assert_func
libavcodec.a(motion_est.o) : error LNK2001: unresolved external symbol
___assert_func
libavutil.a(mathematics.o) : error LNK2001: unresolved external symbol
___assert_func
libavutil.a(log.o) : error LNK2001: unresolved external symbol ___getreent


Interesting thing is these are not defined or used by ffmpeg nor my code. I
think its cygwin related errors.
The command line args is

./configure --disable-asm --enable-static --disable-shared
--disable-everything --enable-decoder=h263 --enable-decoder=mpeg4
--enable-decoder=h264 --enable-parsers --enable-aandct --enable-encoder=h263
--enable-encoder=mpeg4 --enable-gpl --enable-libx264


-- 
Thanks & Regards
Chetan.M



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