ffmpeg-0.9 build fails on 10.5

[alekq]

https://gist.github.com/1528236 "brew install -v ffmpeg" output.

https://gist.github.com/1528246 "brew doctor" output.

Ffmpeg build failed on upgrade to 0.9 and clean install, also.

Found out that this is known problem when using gcc >= 4.2 and PIC on 32-bit x86. Adding "--extra-cflags=-mdynamic-no-pic" to ffmpeg formula finally made build possible.

This is my first bug report, so be gentle. :P

Alex

[mistydemeo]

It looks like that workaround was being applied, but only on Snow Leopard for some reason. Leopard was clearly broken too. Fixed in 09d5b0e. Thanks for the report!

[alekq]

Actually, build fails again with the same error. I'm absolute beginner with programming in Ruby, so can't provide you with more concrete information. However, I noticed this:

1. when build fails it reports this at the end:

Hardware: dual-core 64-bit penryn
OS X: 10.5.8
Kernel Architecture: i386

I'm not sure how "Hardware" (class?) in ffmpeg.rb works, however Homebrew reports hardware as 64-bit and arch as 32-bit. I don't know is there any way to modify FFmpeg formula to test for arch, not hardware. ** Sorry in advance if I'm writing nonsense. **

1. I modified my local ffmpeg.rb like this and now it works again:

if MacOS.leopard? and Hardware.is_64_bit?
ENV.append_to_cflags "-mdynamic-no-pic"
end

[alekq]

Any progress in solving this issue? Problem is still present.

Thank you.

Alex

[mistydemeo]

Sorry about that.

I don't have a Leopard computer to test with, but it sounds like the problem is that ffmpeg is detecting your processor as 32-bit. On older OS X's, kernel arch and processor arch are separate, and you may have a 32-bit kernel but be able to run 64-bit programs. In this case Homebrew's detecting your processor differently from how ffmpeg does, so Hardware.is_32_bit? isn't helping.

Can you tell me what happens if you replace that bit of code with the following?

if `uname -m`.chomp == 'i386'
  ENV.append_to_cflags "-mdynamic-no-pic"
end

[adamv]

Also note that Homebrew defaults to building everything 32-bit on Leopard, regardless of hardware.

[mistydemeo]

Interesting, didn't realize that. In that case, if MacOS.leopard? or Hardware.is_32_bit? would probably be more appropriate.

[alekq]

if MacOS.leopard? or Hardware.is_32_bit?

Worked like a charm. :) FFmpeg now builds without any problems.

Thank you.

Alex

[adamv]

Reopening until the formula is patched.

[mistydemeo]

Fixed - thanks!