[FFmpeg-user] ffmpeg4android and missing math functions
Carl Eugen Hoyos
cehoyos at ag.or.at
Thu Oct 30 00:49:47 CET 2014
C E Macfarlane <c.e.macfarlane <at> macfh.co.uk> writes:
> ./configure --prefix=/opt/share --disable-mipsdspr1
> --disable-mipsdspr2 --enable-cross-compile --arch=mipsel
> --target-os=linux --cross-prefix=mipsel-
> --cc=mipsel-gcc --cxx=mipsel-g++
(cxx should be unneded.)
> /home/Embedded/cross-compiler-mipsel/ffmpeg-2.4.2# make
> CC libavdevice/alldevices.o
> In file included from ./libavutil/internal.h:168,
> from ./libavutil/common.h:415,
> from ./libavutil/avutil.h:289,
> from ./libavutil/log.h:25,
> from libavdevice/avdevice.h:46,
> from libavdevice/alldevices.c:22:
> ./libavutil/libm.h:88: error: static declaration of 'fminf' follows
> non-static declaration
Too bad the compiler doesn't tell us where the non-static
> make: *** [libavdevice/alldevices.o] Error 1
> # grep HAVE_FMINF config.h
> #define HAVE_FMINF 0
It appears to me that fminf() is defined in one
of your cross-compilation system headers - probably
math.h - but not available in your C library.
Is that correct or do I miss something?
Or does the cross compiler use the wrong headers?
Or is a linker flag needed to tell the compiler
where to find fminf()?
Your compiler is eight years old, I don't know
if this is the problem but I don't think anybody
can rule it out.
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