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