Explicitly build-depend on pkg-config

Build-depending on it via libgtk-3-dev is insufficient, especially when
using the pkg.openssh.nognome build profile.

Thanks to Aurelien Jarno.

Closes: #894558

1 files changed, 1 insertions, 0 deletions

diff --git a/debian/control b/debian/control
index 541753a8e..4452e62b0 100644
--- a/debian/control
+++ b/debian/control
@@ -16,6 +16,7 @@ Build-Depends: autotools-dev,
                libssl1.0-dev | libssl-dev (<< 1.1.0~),
                libsystemd-dev [linux-any],
                libwrap0-dev | libwrap-dev,
+               pkg-config,
                zlib1g-dev (>= 1:1.2.3),
 Standards-Version: 4.1.0
 Uploaders: Colin Watson <cjwatson@debian.org>,