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! The
whole undefined symbols about this two files are in the attachment. Thanks for
any help!
Guangchao Yao w _Jv_RegisterClasses
U __aeabi_unwind_cpp_pr0@@GCC_3.5
U __assert_fail@@GLIBC_2.4
U __ctype_b_loc@@GLIBC_2.4
U __ctype_toupper_loc@@GLIBC_2.4
w __cxa_finalize@@GLIBC_2.4
U __fprintf_chk@@GLIBC_2.4
w __gmon_start__
U __isinff@@GLIBC_2.4
U __isnan@@GLIBC_2.4
U __isoc99_sscanf@@GLIBC_2.7
U __memcpy_chk@@GLIBC_2.4
U __memmove_chk@@GLIBC_2.4
U __memset_chk@@GLIBC_2.4
U __snprintf_chk@@GLIBC_2.4
U __stack_chk_fail@@GLIBC_2.4
U __stack_chk_guard@@GLIBC_2.4
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
U cosh
U crc32
U deflate
U deflateEnd
U deflateInit2_
U deflateInit_
U deflateReset
U exp
U fabs
U floor
U floorf
U fputs@@GLIBC_2.4
U free@@GLIBC_2.4
U frexp@@GLIBC_2.4
U frexpf@@GLIBC_2.4
U inflate
U inflateEnd
U inflateInit_
U inflateReset
U inflateSync
U ldexp@@GLIBC_2.4
U ldexpf@@GLIBC_2.4
U llrint
U log
U log10
U lrint
U lrintf
U lroundf
U memcmp@@GLIBC_2.4
U memcpy@@GLIBC_2.4
U memmove@@GLIBC_2.4
U memset@@GLIBC_2.4
U mkstemp64@@GLIBC_2.4
U posix_memalign@@GLIBC_2.4
U pow
U powf
U printf@@GLIBC_2.4
U qsort@@GLIBC_2.4
U raise@@GLIBC_2.4
U realloc@@GLIBC_2.4
U rint
U rintf
U roundf
U sin
U sincos
U sincosf
U sinf
U sinh
U stderr@@GLIBC_2.4
U strchr@@GLIBC_2.4
U strcmp@@GLIBC_2.4
U strlen@@GLIBC_2.4
U strtod@@GLIBC_2.4
U strtol@@GLIBC_2.4
U tan
U tanh
U truncf
U uncompress
U xfree
U xrealloc
U xzalloc
w _Jv_RegisterClasses
w __cxa_finalize@@GLIBC_2.2.5
w __gmon_start__
U av_free@@LIBAVUTIL_50
U av_init_packet@@LIBAVCODEC_52
U av_picture_copy@@LIBAVCODEC_52
U avcodec_alloc_context@@LIBAVCODEC_52
U avcodec_alloc_frame@@LIBAVCODEC_52
U avcodec_close@@LIBAVCODEC_52
U avcodec_decode_audio3@@LIBAVCODEC_52
U avcodec_decode_video2@@LIBAVCODEC_52
U avcodec_find_decoder@@LIBAVCODEC_52
U avcodec_init@@LIBAVCODEC_52
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
U xfree
U xrealloc
U xzalloc
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