Today, I succeeded to cross compile freeRDP for arm platform and could run it
on an arm terminal. But when I wanted to test video redirection, I just
couldn't play a video and freerdp returned an warning: "in tsmf_ffmpeg.so:
undefined symbol : sinh, failed to load tsmf_ffmpeg.so." Then I analysed the
tsmf_ffmpeg.so using nm command. The result is confusing: there were so many
undefined symbols about math functions,such as sin, sinh, ceil, and so on. I
also checked the tsmf_ffmpeg.so in my pc, and the differences are huge! I just
don't understand what's going on.
Some undefined symbols which I get using command: nm -u tsmf_ffmpeg.so in
tsmf_ffmpeg.so under arm terminal are below:
U __strcpy_chk@@GLIBC_2.4
U __vsnprintf_chk@@GLIBC_2.4
U abort@@GLIBC_2.4
U acos
U asin
U atan
U cbrtf
U ceil
U compress
U compress2
U cos
Some undefined symbols under my pc are below:
U avcodec_open@@LIBAVCODEC_52
U avcodec_register_all@@LIBAVCODEC_52
U avpicture_fill@@LIBAVCODEC_52
U avpicture_get_size@@LIBAVCODEC_52
U memcpy@@GLIBC_2.2.5
U memmove@@GLIBC_2.2.5
U memset@@GLIBC_2.2.5
U printf@@GLIBC_2.2.5
The differences are huge! It's just like arm did not compile tsmf_ffmpeg.c!
Thanks for any help!
Guangchao Yao
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