[Libav-user] Trying to compile ffmpeg for iOS

Gavin Kinsey gkinsey at ad-holdings.co.uk
Tue Mar 27 14:23:00 CEST 2012

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 

> 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 --
--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 

Gavin Kinsey
AD Holdings Plc

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