unable to build libs for ios5.0 please help me(file was built for archive which is not the architecture being linked (armv7))

[3kanth]

file was built for archive which is not the architecture being linked (armv7) Ld /Users/arijasoftmac/Library/Developer/Xcode/DerivedData/iPlayer-bsiutkabquvufqbsyacpfddqlztf/Build/Products/Release-iphoneos/vMEye.app/vMEye normal armv7 cd /Volumes/arija2/ffmpeg4ios/samples/rtsp_player setenv IPHONEOS_DEPLOYMENT_TARGET 5.0 setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang++ -arch armv7 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk -L/Users/arijasoftmac/Library/Developer/Xcode/DerivedData/iPlayer-bsiutkabquvufqbsyacpfddqlztf/Build/Products/Release-iphoneos -L/Volumes/arija2/ffmpeg4ios/samples/rtsp_player/Classes/rtsp -L/Volumes/arija2/ffmpeg4ios/samples/rtsp_player/../../armv7 -F/Users/arijasoftmac/Library/Developer/Xcode/DerivedData/iPlayer-bsiutkabquvufqbsyacpfddqlztf/Build/Products/Release-iphoneos -filelist /Users/arijasoftmac/Library/Developer/Xcode/DerivedData/iPlayer-bsiutkabquvufqbsyacpfddqlztf/Build/Intermediates/iPlayer.build/Release-iphoneos/Demo.build/Objects-normal/armv7/vMEye.LinkFileList -dead_strip -miphoneos-version-min=5.0 -lstdc++ -lz -framework Foundation -framework UIKit -framework CoreGraphics -framework QuartzCore -lRtspParser -lavcodec -lavformat -lavdevice -lswscale -lavutil -o /Users/arijasoftmac/Library/Developer/Xcode/DerivedData/iPlayer-bsiutkabquvufqbsyacpfddqlztf/Build/Products/Release-iphoneos/vMEye.app/vMEye

ld: warning: ignoring file /Volumes/arija2/ffmpeg4ios/armv7/libavcodec.a, file was built for archive which is not the architecture being linked (armv7) ld: warning: ignoring file /Volumes/arija2/ffmpeg4ios/armv7/libavformat.a, file was built for archive which is not the architecture being linked (armv7) ld: warning: ignoring file /Volumes/arija2/ffmpeg4ios/armv7/libavdevice.a, file was built for archive which is not the architecture being linked (armv7) ld: warning: ignoring file /Volumes/arija2/ffmpeg4ios/armv7/libswscale.a, file was built for archive which is not the architecture being linked (armv7) ld: warning: ignoring file /Volumes/arija2/ffmpeg4ios/armv7/libavutil.a, file was built for archive which is not the architecture being linked (armv7) Undefined symbols for architecture armv7: "_avcodec_alloc_context", referenced from: _InitDecode in VideoDecode.o "_avcodec_init", referenced from: -[RtspTestViewController setupScaler] in RtspTestViewController.o _InitDecode in VideoDecode.o "_avcodec_open", referenced from: _InitDecode in VideoDecode.o "_avcodec_register_all", referenced from: _InitDecode in VideoDecode.o "_avpicture_free", referenced from: -[RtspTestViewController setupScaler] in RtspTestViewController.o "_avpicture_fill", referenced from: _InitDecode in VideoDecode.o "_sws_getContext", referenced from: -[RtspTestViewController setupScaler] in RtspTestViewController.o _AVDecode in VideoDecode.o "_avpicture_alloc", referenced from: -[RtspTestViewController setupScaler] in RtspTestViewController.o "_av_free", referenced from: __Z12UnInitDecodeP12CVideoDecodei in VideoDecode.o "_avcodec_find_decoder", referenced from: _InitDecode in VideoDecode.o "_sws_scale", referenced from: -[RtspTestViewController getFrames] in RtspTestViewController.o _AVDecode in VideoDecode.o "_sws_freeContext", referenced from: -[RtspTestViewController setupScaler] in RtspTestViewController.o __Z12UnInitDecodeP12CVideoDecodei in VideoDecode.o "_avcodec_alloc_frame", referenced from: _InitDecode in VideoDecode.o "_avcodec_decode_video2", referenced from: _AVDecode in VideoDecode.o ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation)