[Buildroot] [git commit branch/2022.05.x] support/dependencies/dependencies.sh: check for 'cmp'

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=d7a54191fbde92a6edefcb0c6306ab72604ee68f
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2022.05.x

cmp from diffutils is part of the host system requirements, so check
for it. It is used in package/pkg-generic.mk.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
(cherry picked from commit 1ca7348fd445c6842ba2d8c20e4e76e49aa54fdb)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 support/dependencies/dependencies.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
index c604a9efcc..d69d97afaa 100755
--- a/support/dependencies/dependencies.sh
+++ b/support/dependencies/dependencies.sh
@@ -163,7 +163,7 @@ fi
 
 # Check that a few mandatory programs are installed
 missing_progs="no"
-for prog in perl tar wget cpio unzip rsync bc ${DL_TOOLS} ; do
+for prog in perl tar wget cpio unzip rsync bc cmp ${DL_TOOLS} ; do
 	if ! which $prog > /dev/null ; then
 		echo "You must install '$prog' on your build machine";
 		missing_progs="yes"
@@ -175,6 +175,8 @@ for prog in perl tar wget cpio unzip rsync bc ${DL_TOOLS} ; do
 			echo "  zcat is usually part of the gzip package in your distribution"
 		elif test $prog = "bzcat" ; then
 			echo "  bzcat is usually part of the bzip2 package in your distribution"
+		elif test $prog = "cmp" ; then
+			echo "  cmp is usually part of the diffutils package in your distribution"
 		fi
 	fi
 done