From bac567a53be1995cc24b6de0c175839f4f57afeb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michal=20Koutn=C3=BD?= <mkoutny@suse.com>
Date: Tue, 21 Apr 2020 18:08:23 +0200
Subject: [PATCH] mkosi: Use distro-invariant rootprefix

Distributions may be build with various configs, e.g. customized
rootprefix. It'd be unmaintanable to have specific mkosi.build for each
supported distro. Hence, make the build script flexible yet distro
oblivious.
---
 mkosi.build | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/mkosi.build b/mkosi.build
index 16ac2e9d0d..fc09baeadd 100755
--- a/mkosi.build
+++ b/mkosi.build
@@ -42,6 +42,14 @@ fi
 if [ ! -f "$BUILDDIR"/build.ninja ] ; then
         sysvinit_path=`realpath /etc/init.d`
 
+        init_path=`realpath /sbin/init 2>/dev/null`
+        if [ -z "$init_path" ] ; then
+            rootprefix=""
+        else
+            rootprefix=${init_path%/lib/systemd/systemd}
+            rootprefix=/${rootprefix#/}
+        fi
+
         nobody_user=`id -u -n 65534 2> /dev/null`
         if [ "$nobody_user" != "" ] ; then
                 # Validate that we can translate forth and back
@@ -76,7 +84,7 @@ if [ ! -f "$BUILDDIR"/build.ninja ] ; then
                 fi
         fi
 
-        meson "$BUILDDIR" -D "sysvinit-path=$sysvinit_path" -D default-hierarchy=unified -D man=false -D "nobody-user=$nobody_user" -D "nobody-group=$nobody_group"
+        meson "$BUILDDIR" -D "sysvinit-path=$sysvinit_path" -D "rootprefix=$rootprefix" -D default-hierarchy=unified -D man=false -D "nobody-user=$nobody_user" -D "nobody-group=$nobody_group"
 fi
 
 ninja -C "$BUILDDIR" all