From 7385ed39a40ca09e66e107b5f47a25d5b0ccbaf7 Mon Sep 17 00:00:00 2001
From: Alessandro Iezzi <aiezzi@alessandroiezzi.it>
Date: Tue, 23 Jan 2024 11:50:29 +0100
Subject: Add check-deps target in Makefile

It's useful to configure the OS before building.
---
 Makefile              |  5 ++++-
 scripts/check-deps.sh | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 1 deletion(-)
 create mode 100755 scripts/check-deps.sh

diff --git a/Makefile b/Makefile
index ddf7c36..67628ad 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,10 @@ KERNEL_VERSION   = 5.11.6
 BUSYBOX_VERSION  = 1.33.0
 SYSLINUX_VERSION = 6.03
 
-all: busybox linux initrd
+all: check-deps busybox linux initrd
+
+check-deps:
+	scripts/check-deps.sh
 
 initrd:
 	@mkdir -p $@
diff --git a/scripts/check-deps.sh b/scripts/check-deps.sh
new file mode 100755
index 0000000..7568e47
--- /dev/null
+++ b/scripts/check-deps.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+
+check_app()
+{
+    which $1 2>/dev/null 1>/dev/null
+    local result=$?
+
+    echo -n "Checking $1..."
+
+    if [ $result -gt 0 ]; then
+	echo 'Not found'
+	exit 1
+    else
+	echo 'Found'
+    fi
+}
+
+check_pkg()
+{
+    $pkg | grep $1 2>/dev/null 1>/dev/null
+    local result=$?
+    echo -n "Checking $1..."
+
+    if [ $result -gt 0 ]; then
+	echo 'Not found'
+	exit 1
+    else
+	echo 'Found'
+    fi
+}
+
+fedora()
+{
+    check_app gcc
+    check_app make
+    check_pkg glibc-static
+}
+
+osname=`cat /etc/os-release | grep ^ID= | sed -E 's/.*=(.*)/\1/'`
+osver=`cat /etc/os-release | grep ^VERSION_ID= | sed -E 's/.*=(.*)/\1/g'`
+
+case $osname in
+    fedora)
+	pkg="dnf list installed"
+	fedora
+	;;
+    freebsd)
+    ;;
+esac
+
+echo
+echo 'You can proceed building Alex GNU/Linux'
-- 
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