linux-capability: Add Note for pkg-config installation

Signed-off-by: Hiroshi Hatake <[email protected]>
fluent · Nov 11, 2020 · 814873d · 814873d
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commit 814873d
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diff --git a/configuration/linux-capability.md b/configuration/linux-capability.md
@@ -40,6 +40,8 @@ Or install it yourself as for td-agent:
 
     $ td-agent-gem install capng_c
 
+**Note:** capng_c uses `pkg-config` to link libcap-ng library. If you couldn't handle Linux capability with capng_c installation, please confirm `pgk-config` package is installed on your box.
+
 ## Capability handling on in_tail
 
 Currently, `in_tail` which is the one of the Fluentd core plugin handles the following Linux capabilities: