On Nov 20, 2020, at 7:08 AM, Juraj Linkeš [off-list ref] wrote:

Some Arm SoCs are not NUMA systems. Add the capability to disable NUMA
for cross build and disable NUMA in Arm cross files.

Signed-off-by: Juraj Linkeš <redacted>
Reviewed-by: Honnappa Nagarahalli <redacted>
---
config/arm/arm64_armada_linux_gcc             |  1 +
config/arm/arm64_bluefield_linux_gcc          |  1 +
config/arm/arm64_dpaa_linux_gcc               |  1 +
config/arm/arm64_graviton2_linux_gcc          |  1 +
config/arm/arm64_n1sdp_linux_gcc              |  1 +
config/arm/arm64_octeontx2_linux_gcc          |  1 +
config/arm/arm64_stingray_linux_gcc           |  1 +
config/arm/meson.build                        |  2 --
config/meson.build                            | 19 +++++++++++++------
.../linux_gsg/cross_build_dpdk_for_arm64.rst  |  4 ++++
10 files changed, 24 insertions(+), 8 deletions(-)

...

diff --git a/config/meson.build b/config/meson.build
index 2bff6137f..9583be4ab 100644
--- a/config/meson.build
+++ b/config/meson.build

@@ -142,12 +142,19 @@ endif

# check for libraries used in multiple places in DPDK
has_libnuma = 0
-numa_dep = cc.find_library('numa', required: false)
-if numa_dep.found() and cc.has_header('numaif.h')
-	dpdk_conf.set10('RTE_HAS_LIBNUMA', true)
-	has_libnuma = 1
-	add_project_link_arguments('-lnuma', language: 'c')
-	dpdk_extra_ldflags += '-lnuma'
+find_libnuma = true
+if meson.is_cross_build() and not meson.get_cross_property('numa', true)
+	# don't look for libnuma if explicitly disabled in cross build
+	check_libnuma = false
+endif