[FFmpeg-user] Errors Compiling FFMPEG on MIPS
C E Macfarlane
c.e.macfarlane at macfh.co.uk
Thu Aug 28 02:43:19 CEST 2014
Many thanks for the much needed reply, please see below ...
BTW, you or may or may not be interested to know that since subscribing to
this and the libav-user list, I've been receiving phishing spam.
> C E Macfarlane <c.e.macfarlane <at> macfh.co.uk> writes:
>
> > I've tried:
> > ffmpeg-2.2.tar.gz, downloaded 28-03-2014
> > ffmpeg-2.2.7.tar.gz, downloaded within the last
> couple of days
> > ffmpeg-2.3.3.tar.gz, downloaded within the last
> couple of days
>
> Why didn't you try current git head which is the
> only version supported on this mailing list?
> (It won't make a difference but since a fix will
> only reach current git head, you will have to
> test in any case.)
I've never got involved with git, as I'm not interested in bleeding edge. I
just want to get ffmpeg working on this particular device.
> > Various configuration options have been tried,
> > based around:
>
> Various?
>
> > ./configure --prefix=/opt/share --enable-gpl
>
> > --enable-nonfree
>
> Please remove it, it has no effect except changing
> the license of your binaries (you may not pass
> them on.)
Will do
> > --enable-shared
>
> This is ok, but it may make sense to test without
> it first.
AFAICR I did, and it made no difference to the end result. Will try again,
though.
>
> > --arch=mips
>
> This is definitely wrong:
> Either you are cross-compiling, then this is
> needed but many options are missing, or you
> are not cross-compiling, then --arch should
> not be used.
Will remove
> > --disable-mips32r2 --disable-mipsdspr1
> > --disable-mipsdspr2 --disable-mipsfpu
>
> Are they really all necessary?
At least the --disable-mipsdspr1 and --disable-mipsdspr2 are nesessary,
otherwise further compile errors occur.
> I ask because some effort was put into
> optimisations for arm
I think you mean MIPS? (But, BTW, the only way I could get FFMPEG to
compile on another device, a Zyxel NAS221 running on Ox810, ARM926EJ-S rev 5
(v5l) 183 BogoMIPS, was to disable many ARM
optimisations, --cpu=armv5te --disable-armv6 --disable-armv6t2 --disable-neo
n --disable-vfp --disable-vfpv3; however that is history, FFMpeg is working
well on that device now.)
> and you disable
> them all afaict...
>
> > CC libavdevice/alldevices.o
> > In file included from ./libavutil/internal.h:167,
> > 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
>
> Please provide the following:
> Output of: $ grep HAVE_FMINF config.h
> The content of config.log starting with
> "check_mathfunc fminf" until "check_mathfunc"
> And the output of "make V=1 libavdevice/alldevices.o"
Ok, here's the output from a rerun with the configuration changes you have
suggested:
First for finds of fminf (I'd already got that far, so I'll include them
anyway, before following your advice):
Searching for: fminf in *.*
config.log(3269): fminf
config.log(3539): fminf
config.log(8567): check_mathfunc fminf 2
config.log(8572): 2 float foo(float f, float g) { return fminf(f, g); }
config.log(8578): ffconf.8kYhEsYK.c:(.text+0x20): undefined reference to
`fminf'
libavutil\libm.h(86): #undef fminf
libavutil\libm.h(87): static av_always_inline av_const float fminf(float x,
float y)
doc\config.texi(198): @c @set have-fminf no
Found 8 occurrence(s) in 3 file(s)
Next you wanted a section of config.log as follows (the entire file is
appended):
check_mathfunc fminf 2
check_ld cc
check_cc
BEGIN /share/external/USB_DRIVE_A1/.tmp/ffconf.8kYhEsYK.c
1 #include <math.h>
2 float foo(float f, float g) { return fminf(f, g); }
3 int main(void){ return (int) foo; }
END /share/external/USB_DRIVE_A1/.tmp/ffconf.8kYhEsYK.c
gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_S
OURCE=200112 -D_XOPEN_SOURCE=600 -DPIC -std=c99 -fomit-frame-pointer -fPIC -
mips32r2 -mhard-float -pthread -c -o
/share/external/USB_DRIVE_A1/.tmp/ffconf.EfcsfFPa.o
/share/external/USB_DRIVE_A1/.tmp/ffconf.8kYhEsYK.c
gcc -Wl,--as-needed -o /share/external/USB_DRIVE_A1/.tmp/ffconf.wAa1LEmp
/share/external/USB_DRIVE_A1/.tmp/ffconf.EfcsfFPa.o -lm -lbz2 -lz -pthread
/share/external/USB_DRIVE_A1/.tmp/ffconf.EfcsfFPa.o: In function `foo':
ffconf.8kYhEsYK.c:(.text+0x20): undefined reference to `fminf'
collect2: ld returned 1 exit status
Finally, here's the the results of a new attempt including your suggested
configuration changes:
[build]$ cd ffmpeg-2.3.3
[ffmpeg-2.3.3]$ cp -a /mnt/nfs/FFMpeg-Configure-QNAP.sh .
[ffmpeg-2.3.3]$ cat ./FFMpeg-Configure-QNAP.sh
./configure --prefix=/opt/share --enable-gpl --disable-mipsdspr1 --disable-m
ipsdspr2 --disable-doc $*
[ffmpeg-2.3.3]$ ./FFMpeg-Configure-QNAP.sh > FFMpeg-Configure-QNAP.log
cmp: config.h: No such file or directory
cmp: libavutil/avconfig.h: No such file or directory
[ffmpeg-2.3.3]$ make
CC libavdevice/alldevices.o
In file included from ./libavutil/libm.h:33,
from ./libavutil/internal.h:167,
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/mips/libm_mips.h:72:1: warning: "HAVE_LRINTF" redefined
In file included from libavdevice/alldevices.c:21:
./config.h:223:1: warning: this is the location of the previous definition
In file included from ./libavutil/internal.h:167,
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
./libavutil/libm.h:159: error: static declaration of 'lrint' follows
non-static declaration
./libavutil/libm.h:173: error: static declaration of 'round' follows
non-static declaration
./libavutil/libm.h:180: error: static declaration of 'roundf' follows
non-static declaration
./libavutil/libm.h:187: error: static declaration of 'trunc' follows
non-static declaration
./libavutil/libm.h:194: error: static declaration of 'truncf' follows
non-static declaration
make: *** [libavdevice/alldevices.o] Error 1
Additionally, I've just discovered this. Unfortunately, the rather arcane
posting restrictions means that I can't send the whole file, but here is a
section that looks relevant to the problem, and there is a link below to
download the package if that should be required ...
/opt/info/gcc.info:
=== Begin Quote ===
5.44 Other built-in functions provided by GCC
=============================================
GCC provides a large number of built-in functions other than the ones
mentioned above. Some of these are for internal use in the processing
of exceptions or variable-length argument lists and will not be
documented here because they may change from time to time; we do not
recommend general use of these functions.
The remaining functions are provided for optimization purposes.
GCC includes built-in versions of many of the functions in the standard
C library. The versions prefixed with `__builtin_' will always be
treated as having the same meaning as the C library function even if you
specify the `-fno-builtin' option. (*note C Dialect Options::) Many of
these functions are only optimized in certain cases; if they are not
optimized in a particular case, a call to the library function will be
emitted.
Outside strict ISO C mode (`-ansi', `-std=c89' or `-std=c99'), the
functions `_exit', `alloca', `bcmp', `bzero', `dcgettext', `dgettext',
`dremf', `dreml', `drem', `exp10f', `exp10l', `exp10', `ffsll', `ffsl',
`ffs', `fprintf_unlocked', `fputs_unlocked', `gammaf', `gammal',
`gamma', `gettext', `index', `isascii', `j0f', `j0l', `j0', `j1f',
`j1l', `j1', `jnf', `jnl', `jn', `mempcpy', `pow10f', `pow10l', `pow10',
`printf_unlocked', `rindex', `scalbf', `scalbl', `scalb', `signbit',
`signbitf', `signbitl', `significandf', `significandl', `significand',
`sincosf', `sincosl', `sincos', `stpcpy', `strdup', `strfmon',
`toascii', `y0f', `y0l', `y0', `y1f', `y1l', `y1', `ynf', `ynl' and `yn'
may be handled as built-in functions. All these functions have
corresponding versions prefixed with `__builtin_', which may be used
even in strict C89 mode.
The ISO C99 functions `_Exit', `acoshf', `acoshl', `acosh', `asinhf',
`asinhl', `asinh', `atanhf', `atanhl', `atanh', `cabsf', `cabsl',
`cabs', `cacosf', `cacoshf', `cacoshl', `cacosh', `cacosl', `cacos',
`cargf', `cargl', `carg', `casinf', `casinhf', `casinhl', `casinh',
`casinl', `casin', `catanf', `catanhf', `catanhl', `catanh', `catanl',
`catan', `cbrtf', `cbrtl', `cbrt', `ccosf', `ccoshf', `ccoshl',
`ccosh', `ccosl', `ccos', `cexpf', `cexpl', `cexp', `cimagf', `cimagl',
`cimag', `conjf', `conjl', `conj', `copysignf', `copysignl',
`copysign', `cpowf', `cpowl', `cpow', `cprojf', `cprojl', `cproj',
`crealf', `creall', `creal', `csinf', `csinhf', `csinhl', `csinh',
`csinl', `csin', `csqrtf', `csqrtl', `csqrt', `ctanf', `ctanhf',
`ctanhl', `ctanh', `ctanl', `ctan', `erfcf', `erfcl', `erfc', `erff',
`erfl', `erf', `exp2f', `exp2l', `exp2', `expm1f', `expm1l', `expm1',
`fdimf', `fdiml', `fdim', `fmaf', `fmal', `fmaxf', `fmaxl', `fmax',
`fma', `fminf', `fminl', `fmin', `hypotf', `hypotl', `hypot', `ilogbf',
`ilogbl', `ilogb', `imaxabs', `isblank', `iswblank', `lgammaf',
`lgammal', `lgamma', `llabs', `llrintf', `llrintl', `llrint',
`llroundf', `llroundl', `llround', `log1pf', `log1pl', `log1p',
`log2f', `log2l', `log2', `logbf', `logbl', `logb', `lrintf', `lrintl',
`lrint', `lroundf', `lroundl', `lround', `nearbyintf', `nearbyintl',
`nearbyint', `nextafterf', `nextafterl', `nextafter', `nexttowardf',
`nexttowardl', `nexttoward', `remainderf', `remainderl', `remainder',
`remquof', `remquol', `remquo', `rintf', `rintl', `rint', `roundf',
`roundl', `round', `scalblnf', `scalblnl', `scalbln', `scalbnf',
`scalbnl', `scalbn', `snprintf', `tgammaf', `tgammal', `tgamma',
`truncf', `truncl', `trunc', `vfscanf', `vscanf', `vsnprintf' and
`vsscanf' are handled as built-in functions except in strict ISO C90
mode (`-ansi' or `-std=c89').
=== End Quote ===
The ipkg details for gcc are:
Package: gcc
Version: 4.0.4-1
Depends: binutils, libc-dev
Section: base
Architecture: mipsel
Maintainer: NSLU2 Linux <nslu2-linux at yahoogroups.com>
MD5Sum: 1a3a1a372c1a6234740fc73b548f6a2f
Size: 14679987
Filename: gcc_4.0.4-1_mipsel.ipk
Source: http://ftp.gnu.org/gnu/gcc/gcc-4.0.4/gcc-4.0.4.tar.bz2
Description: The GNU Compiler Collection.
The ipkg source download was:
http://ipkg.nslu2-linux.org/feeds/optware/wdtv/cross/stable/gcc_4.0.4-1_mips
el.ipk
Thanks again for any further advice you can give.
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