build: add global libatomic dependency for 32-bit clang

[dpdk.git] / config / meson.build

diff --git a/config/meson.build b/config/meson.build
index 5842134..224d29e 100644 (file)
--- a/config/meson.build
+++ b/config/meson.build
@@ -173,6 +173,13 @@ if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep)
        dpdk_extra_ldflags += '-lpcap'
 endif
 
+# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
+if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
+       atomic_dep = cc.find_library('atomic', required: true)
+       add_project_link_arguments('-latomic', language: 'c')
+       dpdk_extra_ldflags += '-latomic'
+endif
+
 # add -include rte_config to cflags
 add_project_arguments('-include', 'rte_config.h', language: 'c')