Bug 713808

Summary:	media-video/ffmpeg fails to compile on arm
Product:	Gentoo Linux	Reporter:	Agostino Sarubbo <ago>
Component:	Current packages	Assignee:	Gentoo Media-video project <media-video>
Status:	RESOLVED INVALID
Severity:	normal	CC:	sam
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	ffmpeg-4.1.3:20200319-080900.log emerge --info

Description Agostino Sarubbo gentoo-dev

2020-03-21 15:43:09 UTC

This is an auto-filled bug because media-video/ffmpeg fails to compile on arm. Feel free to adjust the summary to clarify the exact issue. Attached build log and emerge --info

Comment 1 Agostino Sarubbo gentoo-dev

2020-03-21 15:43:16 UTC

Created attachment 623880 [details]
ffmpeg-4.1.3:20200319-080900.log

build log

Comment 2 Agostino Sarubbo gentoo-dev

2020-03-21 15:43:21 UTC

Created attachment 623882 [details]
emerge --info

emerge --info

Comment 3 Andreas Sturmlechner gentoo-dev

2020-03-21 16:38:50 UTC

If 4.1.3 fails to build, how was it marked stable on arm then?

Comment 4 Andreas Sturmlechner gentoo-dev

2020-03-21 16:46:16 UTC

Does media-video/ffmpeg-4.2.2 build?

Comment 5 Agostino Sarubbo gentoo-dev

2020-03-21 16:58:54 UTC

(In reply to Andreas Sturmlechner from comment #3)
> If 4.1.3 fails to build, how was it marked stable on arm then?

I didn't mark it stable. I suppose that:
1) it builds for who marked it stable
2) it was marked stable by mistake

(In reply to Andreas Sturmlechner from comment #4)
> Does media-video/ffmpeg-4.2.2 build?

I'll test it

Comment 6 Agostino Sarubbo gentoo-dev

2020-03-21 17:00:41 UTC

(In reply to Andreas Sturmlechner from comment #4)
> Does media-video/ffmpeg-4.2.2 build?

It doesn't, but I suppose there is something wrong when you run an arm chroot on an arm64 host, infact I see something like:
src/libavutil/aarch64/bswap.h:38:5: error: invalid 'asm': invalid operand for code 'w'

aarch64 should not be involved.

Comment 7 Sam James archtester

2020-03-21 17:09:46 UTC

(In reply to Agostino Sarubbo from comment #6)
> (In reply to Andreas Sturmlechner from comment #4)
> > Does media-video/ffmpeg-4.2.2 build?
> 
> It doesn't, but I suppose there is something wrong when you run an arm
> chroot on an arm64 host, infact I see something like:
> src/libavutil/aarch64/bswap.h:38:5: error: invalid 'asm': invalid operand
> for code 'w'
> 
> aarch64 should not be involved.

Looks like --arch=arm may be a workaround for now but this may happen on other arches if you're in a chroot too. Will test when my box updates.

Comment 8 Agostino Sarubbo gentoo-dev

2020-03-21 17:14:53 UTC

it was my fault. I didn't call linux32 when chrooting from aarch64 hw.