[Buildroot] [PATCH v3] vlc: fix compile error with uClibc-ng Linuxthreads

[Buildroot] [PATCH v3] vlc: fix compile error with uClibc-ng Linuxthreads

[Waldemar Brodkorb]

The fallback code path didn't work correctly, so fix it.

Fixes:
  http://autobuild.buildroot.net/results/3122287ddea1e316a64ccf0d0dc9415bfefebb49/

Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
---
v2 -> v3:
 - use git format patch, requested by Thomas Petazzoni
 - remove unneeded -lpthread, requested by Thomas Petazzoni
v1 -> v2:
 - rework autobuild failure, there is fallback code for non-NPTL,
   so fix it up. Suggested by Thomas Petazzoni
---
 ...ck-code-and-add-required-realtime-library.patch | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 package/vlc/0008-fix-fallback-code-and-add-required-realtime-library.patch

diff --git a/package/vlc/0008-fix-fallback-code-and-add-required-realtime-library.patch b/package/vlc/0008-fix-fallback-code-and-add-required-realtime-library.patch
new file mode 100644
index 0000000..4d5c581
--- /dev/null
+++ b/package/vlc/0008-fix-fallback-code-and-add-required-realtime-library.patch
@@ -0,0 +1,40 @@
+From 381bcb7cb03bb602351a323daf3b69b2d4f45e77 Mon Sep 17 00:00:00 2001
+From: Waldemar Brodkorb <wbx@openadk.org>
+Date: Fri, 26 Aug 2016 15:11:25 +0200
+Subject: [PATCH] fix fallback code and add required realtime library to link
+ command
+
+Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
+---
+ configure.ac       | 1 +
+ src/posix/thread.c | 2 +-
+ 2 files changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index cb1de25..018c11c 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -121,6 +121,7 @@ case "${host_os}" in
+     ;;
+   linux*)
+     SYS=linux
++    AC_CHECK_LIB([rt], [posix_spawnp], [VLC_ADD_LIBS([libvlccore],[-lrt])], [], [])
+     ;;
+   bsdi*)
+     SYS=bsdi
+diff --git a/src/posix/thread.c b/src/posix/thread.c
+index 07fa71e..8b8595f 100644
+--- a/src/posix/thread.c
++++ b/src/posix/thread.c
+@@ -85,7 +85,7 @@ static clockid_t vlc_clock_id;
+ 
+ static void vlc_clock_setup_once (void)
+ {
+-# if (_POSIX_MONOTONIC_CLOCK == 0)
++# if (_POSIX_MONOTONIC_CLOCK == 0) && (_POSIX_CLOCK_SELECTION > 0)
+     long val = sysconf (_SC_MONOTONIC_CLOCK);
+     assert (val != 0);
+     vlc_clock_id = (val < 0) ? CLOCK_REALTIME : CLOCK_MONOTONIC;
+-- 
+2.1.4
+
-- 
2.1.4

[Buildroot] [PATCH v3] vlc: fix compile error with uClibc-ng Linuxthreads

[Thomas Petazzoni]

Hello,

On Fri, 26 Aug 2016 23:27:27 +0200, Waldemar Brodkorb wrote:
> The fallback code path didn't work correctly, so fix it.
> 
> Fixes:
>   http://autobuild.buildroot.net/results/3122287ddea1e316a64ccf0d0dc9415bfefebb49/
> 
> Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
> ---
> v2 -> v3:
>  - use git format patch, requested by Thomas Petazzoni
>  - remove unneeded -lpthread, requested by Thomas Petazzoni
> v1 -> v2:
>  - rework autobuild failure, there is fallback code for non-NPTL,
>    so fix it up. Suggested by Thomas Petazzoni
> ---
>  ...ck-code-and-add-required-realtime-library.patch | 40 ++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
>  create mode 100644 package/vlc/0008-fix-fallback-code-and-add-required-realtime-library.patch

I've applied to master. But in fact, the change in VLC should have made
using two separate patches, as they are not directly related.

Could you please split them in two patches, and submit them upstream?
Once it gets accepted upstream, we can backport the final version.

Thanks a lot!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com