2007-11-22 10:09:25 building FFMPEG fails (bf548-EZKit) ==> SOLVED

Piggebu Piggebu (ANDORRA)

Message: 47402

=========================== UPDATE: problem solved==========================

Sorry for the hasty post... I saw on

https://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?action=ForumBrowse&forum_id=39&_forum_action=ForumMessageBrowse&thread_id=23999

the solution for the problem.

Solution: in the vendor dialog of "make menuconfig" enter into "Blackfin Build options" and chose there in the first option "FDPIC" as format (not FLAT or so)... that's it

==========================================================================

============================ old post =======================================

Hi all

Still working on my camera via USB project, I think I need ffmpeg to grab and manipulate the frames from the camera. (or is there another, better way?)

I tried to compile FFMPEG into the Image but this fails with the messages:

-------------------------------------------snip from building messages---------------------------------------------------

make[1]: Leaving directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/linux-2.6.x'

if [ -f linux-2.6.x/vmlinux ]; then \

ln -f linux-2.6.x/vmlinux linux-2.6.x/linux ; \

. linux-2.6.x/.config; if [ "$CONFIG_MODULES" = "y" ]; then \

[ -d linux-2.6.x/modules ] || mkdir linux-2.6.x/modules; \

make ARCH=blackfin CROSS_COMPILE=bfin-uclinux- -C linux-2.6.x modules; \

make[1]: Entering directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/linux-2.6.x'

CHK include/linux/version.h

CHK include/linux/utsrelease.h

CALL scripts/checksyscalls.sh

Building modules, stage 2.

MODPOST 57 modules

make[1]: Leaving directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/linux-2.6.x'

for dir in lib user ; do [ ! -d $dir ] || make ARCH=blackfin -C $dir || exit 1 ; done

make[1]: Entering directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/lib'

[ -z "" ] || make -j1 || exit $?

[ -z "libssl libg zlib libjpeg ffmpeg libusb libusb" ] || make -j1 ffmpeg libg libjpeg libssl libusb zlib || exit $?

make[2]: Entering directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/lib'

make -C ffmpeg

make[3]: Entering directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/lib/ffmpeg'

find ffmpeg-svn-9768 -type f -print0 | xargs -0 touch -r ffmpeg-svn-9768/configure

set -e ; \

rm -rf build ; \

mkdir build ; \

cd build ; \

../ffmpeg-svn-9768/configure \

--prefix=/usr \

--source-path=$PWD/../ffmpeg-svn-9768 \

--target-os=Linux \

--cpu=bfin \

--arch=bfin \

--extra-ldflags=" -Wl,-elf2flt -mcpu=bf549-0.0" \

--enable-static \

--enable-shared \

--enable-gpl \

--enable-pp \

--disable-strip \

--disable-v4l2 \

--cross-prefix=bfin-uclinux-

bfin-uclinux-gcc is unable to create an executable file.

C compiler test failed.

If you think configure made a mistake, make sure you are using the latest

version from SVN. If the latest version fails, report the problem to the

ffmpeg-devel@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.

Include the log file "config.err" produced by configure as this will help

solving the problem.

make[3]: *** [build/Makefile] Error 1

make[3]: Leaving directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/lib/ffmpeg'

make[2]: *** [ffmpeg] Error 2

make[2]: Leaving directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/lib'

make[1]: *** [all] Error 2

make[1]: Leaving directory `/home/devel/Weiss/uCLinux/BF548/uclinux-dist/lib'

make: *** [subdirs] Error 1

-------------------------------------------------------------------------end----------------------------------------------------

Background infos:

- this comes from enabling the menu "FFMPEG and FFServer" (or similar) in the "make menuconfig" vendor dialog

- using the bf548 EZKit-Board

- using latest SVN trunk

Any help and suggestions are very welcome!

Kind regards

Piggebu

PS: as it is suggested in the error message I tried the latest svn trunk of ffmpeg, without any success. it complains about the --disable-v4l2 option (unknown option). When I remove this option it complains to add --cross-compile, adding this does not change the error message (still saying I should add --cross-compile). I made the changes in the uclinux-dist/lib/ffmpeg/Makefile

PPS: "Kernel support for FDPIC ELF binaries" menu option is enabled

QuoteReplyEditDelete

2007-11-22 13:30:48 Re: building FFMPEG fails (bf548-EZKit) ==> SOLVED

Robin Getz (UNITED STATES)

Message: 47411 Piggebu:

You can not build ffmpeg with the bfin-uclinux compiler - it requires to be built with the bfin-linux-uclibc compiler.

Just change things in the blackfin build options to use FDPIC build option.

-Robin

QuoteReplyEditDelete

2008-07-17 10:22:03 Re: building FFMPEG fails (bf548-EZKit) ==> SOLVED

Christopher Harrsen (UNITED STATES)

Message: 59018

Robin,

I am seeing the same errors building FFMPEG. I would like to enable the FDPIC build option but I only have the following choices under Blackfin build options:

(FLAT) Binary format │ │

│ │ [*] Install ELF shared libraries │ │

│ │ [ ] Install FLAT shared libraries │ │

│ │ User/Lib CFLAGS =: "-g -O2" │ │

│ │ [ ] build with stack overflow checking │ │

│ │ [ ] build with mudflap pointer checking │ │

│ │ [*] install uClinux-dist .config into /root

Where can I enable this selection?

Thanks,

Chris

QuoteReplyEditDelete

2008-07-17 21:40:15 Re: building FFMPEG fails (bf548-EZKit) ==> SOLVED