!4 Added the gcc dependency.

From: @lijingyuan007
Reviewed-by: @wangxp006
Signed-off-by: @wangxp006

arpwatch.spec

@@ -4,7 +4,7 @@
 Name:             arpwatch
 Epoch:            14
 Version:          2.1a15
-Release:          46
+Release:          47
 Summary:          Network monitoring tools for tracking IP addresses on a network
 License:          BSD with advertising
 URL:              http://ee.lbl.gov/
@@ -12,6 +12,7 @@ Source0:          https://ee.lbl.gov/downloads/arpwatch/arpwatch-%{version}.tar.
 Source1:          arpwatch.service
 Source2:          ethercodes-20110707.dat.bz2
 BuildRequires:    libpcap-devel perl-interpreter systemd sendmail
+BuildRequires:    gcc
 Requires(pre):    shadow-utils
 Requires(post):   systemd
 Requires(preun):  systemd
@@ -127,6 +128,12 @@ fi
 %{_mandir}/man8/*.8*
 
 %changelog
+* Wed Jun 25 2021 lijingyuan <lijingyuan3@huawei.com> - 14:2.1a15-47
+- Type:bugfix
+- Id:NA
+- SUG:NA
+- DESC:Added the gcc dependency
+
 * Thu Mar 25 2021 liulong <liulong20@huawei.com> - 14:2.1a15-46
 - Type:bugfix
 - Id:NA