extra/pipewire: fix

extra/pipewire/0001-atomic.patch

@@ -0,0 +1,51 @@
+From 412858de9094de06047a33237ebf12753324636e Mon Sep 17 00:00:00 2001
+From: Kevin Mihelich <kevin@archlinuxarm.org>
+Date: Wed, 11 Mar 2020 07:28:28 -0600
+Subject: [PATCH] atomic
+
+---
+ pipewire-jack/src/meson.build | 23 ++++++++++++++++++++++-
+ 1 file changed, 22 insertions(+), 1 deletion(-)
+
+diff --git a/pipewire-jack/src/meson.build b/pipewire-jack/src/meson.build
+index 68821a1b..70bdd21b 100644
+--- a/pipewire-jack/src/meson.build
++++ b/pipewire-jack/src/meson.build
+@@ -13,12 +13,33 @@ pipewire_jack_c_args = [
+ #optional dependencies
+ jack_dep = dependency('jack', version : '>= 1.9.10', required : false)
+ 
++# Check for GCC style atomics
++dep_atomic = declare_dependency()
++
++if cc.compiles('int main() { int n; return __atomic_load_n(&n, __ATOMIC_ACQUIRE); }',
++               name : 'GCC atomic builtins')
++  # Not all atomic calls can be turned into lock-free instructions, in which
++  # GCC will make calls into the libatomic library. Check whether we need to
++  # link with -latomic.
++  #
++  # This can happen for 64-bit atomic operations on 32-bit architectures such
++  # as ARM.
++  if not cc.links('''#include <stdint.h>
++                     int main() {
++                       uint64_t n;
++                       return (int)__atomic_load_n(&n, __ATOMIC_ACQUIRE);
++                     }''',
++                  name : 'GCC atomic builtins required -latomic')
++    dep_atomic = cc.find_library('atomic')
++  endif
++endif
++
+ pipewire_jack = shared_library('jack-pw',
+     pipewire_jack_sources,
+     soversion : pipewire_version,
+     c_args : pipewire_jack_c_args,
+     include_directories : [configinc],
+-    dependencies : [pipewire_dep, jack_dep, mathlib],
++    dependencies : [pipewire_dep, jack_dep, mathlib, dep_atomic],
+     install : true,
+ )
+ 
+-- 
+2.24.1
+

extra/pipewire/PKGBUILD

@@ -3,6 +3,7 @@
 
 # ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
 #  - remove makedepend on valgrind
+#  - patch to check for and link with libatomic
 
 pkgbase=pipewire
 pkgname=(pipewire pipewire-docs pipewire-jack pipewire-pulse)
@@ -16,8 +17,10 @@ makedepends=(git meson doxygen graphviz xmltoman jack2 libpulse
              alsa-lib gstreamer gst-plugins-base sbc rtkit vulkan-icd-loader
              dbus libsndfile bluez-libs vulkan-headers)
 _commit=74a1632f0720886d5b3b6c23ee8fcd6c03ca7aac  # tags/0.3.1
-source=("git+https://github.com/PipeWire/pipewire#commit=$_commit")
-sha256sums=('SKIP')
+source=("git+https://github.com/PipeWire/pipewire#commit=$_commit"
+        0001-atomic.patch)
+sha256sums=('SKIP'
+            '2e22f850618fcd77cab357ce8d8c2382ccf37a4fd0f782d999a81202bfabc503')
 
 pkgver() {
   cd $pkgbase
@@ -26,6 +29,7 @@ pkgver() {
 
 prepare() {
   cd $pkgbase
+  patch -p1 -i ../0001-atomic.patch
 }
 
 build() {