* [Buildroot] [PATCH v2] mpv: needs atomics or 8-byte sync
@ 2016-11-20 14:54 Arnout Vandecappelle
2016-11-21 21:43 ` Thomas Petazzoni
0 siblings, 1 reply; 2+ messages in thread
From: Arnout Vandecappelle @ 2016-11-20 14:54 UTC (permalink / raw)
To: buildroot
The wscript checks the following.
'func': check_libs(['atomic'],
check_statement('stdint.h',
'int64_t test = 0;'
'test = __atomic_add_fetch(&test, 1, __ATOMIC_SEQ_CST)')),
and
'func': check_statement('stdint.h',
'int64_t test = 0;'
'__typeof__(test) x = ({int a = 1; a;});'
'test = __sync_add_and_fetch(&test, 1)'),
It fails if neither of these are available.
Fixes
http://autobuild.buildroot.net/results/8c20f719f784af1312294600e39004c1d382368a
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
---
I couldn't find a compiler without atomics and with 8-byte sync, so not
entirely sure if it's enough.
v2: improved commit message (in v1 it sounded as if both were needed)
---
package/mpv/Config.in | 2 ++
1 file changed, 2 insertions(+)
diff --git a/package/mpv/Config.in b/package/mpv/Config.in
index 25288a4..2719981 100644
--- a/package/mpv/Config.in
+++ b/package/mpv/Config.in
@@ -3,6 +3,7 @@ config BR2_PACKAGE_MPV
depends on BR2_TOOLCHAIN_HAS_THREADS
depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
+ depends on BR2_TOOLCHAIN_HAS_ATOMIC || BR2_TOOLCHAIN_HAS_SYNC_8
select BR2_PACKAGE_LIBICONV if !BR2_ENABLE_LOCALE
select BR2_PACKAGE_FFMPEG
select BR2_PACKAGE_FFMPEG_SWSCALE
@@ -17,5 +18,6 @@ config BR2_PACKAGE_MPV
comment "mpv needs a toolchain w/ threads, gcc >= 4.5"
depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
+ depends on BR2_TOOLCHAIN_HAS_ATOMIC || BR2_TOOLCHAIN_HAS_SYNC_8
depends on !BR2_TOOLCHAIN_HAS_THREADS || \
!BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
--
2.10.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [Buildroot] [PATCH v2] mpv: needs atomics or 8-byte sync
2016-11-20 14:54 [Buildroot] [PATCH v2] mpv: needs atomics or 8-byte sync Arnout Vandecappelle
@ 2016-11-21 21:43 ` Thomas Petazzoni
0 siblings, 0 replies; 2+ messages in thread
From: Thomas Petazzoni @ 2016-11-21 21:43 UTC (permalink / raw)
To: buildroot
Hello,
On Sun, 20 Nov 2016 15:54:34 +0100, Arnout Vandecappelle
(Essensium/Mind) wrote:
> The wscript checks the following.
> 'func': check_libs(['atomic'],
> check_statement('stdint.h',
> 'int64_t test = 0;'
> 'test = __atomic_add_fetch(&test, 1, __ATOMIC_SEQ_CST)')),
> and
> 'func': check_statement('stdint.h',
> 'int64_t test = 0;'
> '__typeof__(test) x = ({int a = 1; a;});'
> 'test = __sync_add_and_fetch(&test, 1)'),
> It fails if neither of these are available.
>
> Fixes
> http://autobuild.buildroot.net/results/8c20f719f784af1312294600e39004c1d382368a
>
> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
> ---
> I couldn't find a compiler without atomics and with 8-byte sync, so not
> entirely sure if it's enough.
Applied to master, thanks.
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2016-11-21 21:43 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-11-20 14:54 [Buildroot] [PATCH v2] mpv: needs atomics or 8-byte sync Arnout Vandecappelle
2016-11-21 21:43 ` Thomas Petazzoni
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.