examples/l2fwd-keepalive: skip meson build if no librt

When librt is not present on a system, processing the meson.build file
for this example application causes an error. Make the library
non-mandatory and just mark the example as unbuildable if it is
not present.

Fixes: 89f0711f9ddf ("examples: build some samples with meson")
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

diff --git a/examples/l2fwd-keepalive/meson.build b/examples/l2fwd-keepalive/meson.build
index d678a8d..a56d679 100644 (file)
--- a/examples/l2fwd-keepalive/meson.build
+++ b/examples/l2fwd-keepalive/meson.build
@@ -7,7 +7,13 @@
 # DPDK instance, use 'make'
 
 allow_experimental_apis = true
-ext_deps += cc.find_library('rt')
+librt = cc.find_library('rt', required: false)
+if not librt.found()
+       build = false
+       subdir_done()
+endif
+
+ext_deps += librt
 deps += 'timer'
 sources = files(
        'main.c', 'shm.c'