Thank you everybody... it worked! ;-) On Tue, Mar 27, 2012 at 2:05 PM, Alex Cohn <[email protected]>wrote:
> On Tue, Mar 27, 2012 at 18:00, Wagner Patriota > <[email protected]> wrote: > > Thanks Gavin, > > > > I am using the latest SDK and the latest FFMPEG.. > > > > I tried this: > > ./configure > > --enable-static > > --disable-shared > > --enable-pic > > > --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk" > > --extra-ldflags="-arch armv7 -isysroot > > > /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk > > -miphoneos-version-min=5.1" > > --enable-cross-compile > > --arch=arm > > --target-os=darwin > > > --cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" > > --cpu=cortex-a8 > > --extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-min=5.1" > > --disable-debug > > --enable-small > > --disable-asm > > > > based on your command, with some modifications in BOLD.... > > > > well.. it compiles... but when I try to link with my application I have: > > > > Undefined symbols for architecture armv7: > > > > "__Z13avcodec_open2P14AVCodecContextP7AVCodecPP12AVDictionary", > referenced > > from: > > > > __Z4doItv in Smooth.o > > > > "__Z21avformat_write_headerP15AVFormatContextPP12AVDictionary", > referenced > > from: > > > > __Z4doItv in Smooth.o > > > > "__Z26av_interleaved_write_frameP15AVFormatContextP8AVPacket", > referenced > > from: > > > > __Z4doItv in Smooth.o > > > > "__Z7av_freePv", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z10avio_flushP11AVIOContext", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z15av_guess_formatPKcS0_S0_", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z13av_dup_packetP8AVPacket", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z15av_register_allv", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z14av_dump_formatP15AVFormatContextiPKci", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z14av_free_packetP8AVPacket", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z20avcodec_find_decoder7CodecID", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z10avio_closeP11AVIOContext", referenced from: > > > > __Z4doItv in Smooth.o > > > > > > > "__Z19avformat_open_inputPP15AVFormatContextPKcP13AVInputFormatPP12AVDictionary", > > referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z16av_write_trailerP15AVFormatContext", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z9avio_openPP11AVIOContextPKci", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z13avcodec_closeP14AVCodecContext", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z19avformat_new_streamP15AVFormatContextP7AVCodec", referenced from: > > > > __ZL17add_output_streamP15AVFormatContextP8AVStream in Smooth.o > > > > "__Z25avformat_find_stream_infoP15AVFormatContextPP12AVDictionary", > > referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z8av_freepPv", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z22avformat_alloc_contextv", referenced from: > > > > __Z4doItv in Smooth.o > > > > "__Z13av_read_frameP15AVFormatContextP8AVPacket", referenced from: > > > > __Z4doItv in Smooth.o > > > > ld: symbol(s) not found for architecture armv7 > > > > clang: error: linker command failed with exit code 1 (use -v to see > > invocation) > > > > > > Any suggestion? > > > > Thanks... > > > > > > > > > > On Tue, Mar 27, 2012 at 9:23 AM, Gavin Kinsey <[email protected] > > > > wrote: > >> > >> On Friday 23 March 2012 21:22:33 Wagner Patriota wrote: > >> > Has anybody done it yet? > >> > >> Yes, haven't tested with the latest SDK yet but for 5.0 and below I have > >> it > >> working. > >> > >> > I am using the following commands: > >> > > >> <snip commands> > >> > > >> > But when I try to link my application with the libraries this above > >> > script generates, I get the following: > >> > > >> > "ld: warning: ignoring file > >> > /Users/Wagner/ffmpeg/ffmpeg/armv7/libavcodec.a, file was built for > >> > archive which is not the architecture being linked (armv7)" > >> > >> Configure flags that I use (minus the disable/enable decoders and stuff > I > >> have > >> which aren't relevant) > >> > >> configure --enable-static --disable-shared --enable-pic -- > >> > >> > sysroot="/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk" > >> --extra-ldflags="-arch armv7 -isysroot > >> /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk - > >> miphoneos-version-min=4.0" --enable-cross-compile --arch=arm --target- > >> os=darwin -- > >> cc="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" -- > >> cpu=cortex-a8 --extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version- > >> min=4.0" --disable-debug --enable-small > >> > >> I also have a small patch to work around Apple gcc brokenness, which > I've > >> attached. > >> > >> -- > >> Gavin Kinsey > >> AD Holdings Plc > > In your Smooth.cpp you should wrap #include "avformat.h" in extern "C" > { ... }, same for other ffmpeg include files. > > Hope this helps, > Alex Cohn > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user >
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