AWSのClamavとPCRE

AWSAmazon Web Services)のEC2に入れたClamavが以下のメッセージを吐いていた。pcreとpcre-develは導入済み。
yum update clamavで直ったので、どうやらfixされたらしい。(clamavのバージョンは0.99.2)

[LibClamAV] cli_loadldb: logical signature for Win.Trojan.ssid18332-1 uses PCREs but support is disabled, skipping
[LibClamAV] cli_loadldb: logical signature for Win.Ransomware.Locky-4 uses PCREs but support is disabled, skipping
[LibClamAV] cli_loadldb: logical signature for Html.Exploit.CVE_2016_0184-1 uses PCREs but support is disabled, skipping
[LibClamAV] cli_loadldb: logical signature for Pdf.Exploit.APSB16_26-1 uses PCREs but support is disabled, skipping
[LibClamAV] cli_loadldb: logical signature for Swf.Exploit.2016_4215-1 uses PCREs but support is disabled, skipping
[LibClamAV] cli_loadldb: logical signature for Xml.Exploit.CVE_2013_3860-3 uses PCREs but support is disabled, skipping
[LibClamAV] cli_loadldb: logical signature for Pdf.Exploit.CVE_2016_1079-2 uses PCREs but support is disabled, skipping
[LibClamAV] cli_loadldb: logical signature for Pdf.Exploit.CVE_2016_3370-1 uses PCREs but support is disabled, skipping