meson: support both separate and merged sbin-bin directories

Follow-up for ba7f4ae6178309dc937e10cf7dce0eca9dafb8de.

By default, we detect if the real root has a separate /usr/sbin directory, but
this can be overrides with -Dsplit-bin=true|false. The check assumes that
/usr/sbin is split if it is not a symlink, so it'll return a false negative
with some more complicated setups. But that's OK, in those cases this should be
configured explicitly.

This will copy the structure of the directories in the root file system to
$DESTDIR. If a directory is a directory in $DESTDIR but a symlink in the root
file system, this script will fail. This means that it's not possible to reuse
a $DESTDIR from between ba7f4ae61 and this patch.

diff --git a/meson.build b/meson.build
index 5f30bd3854e44ed9f0aa664a99329e8d1e2c173a..607502c937a9bc9eb70627cde1b908d7bef26b65 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -61,6 +61,12 @@ else
 endif
 conf.set10('HAVE_SPLIT_USR', split_usr)
 
+if get_option('split-bin') == 'auto'
+        split_bin = run_command('test', '-L', '/usr/sbin').returncode() != 0
+else
+        split_bin = get_option('split-bin') == 'true'
+endif
+
 rootprefixdir = get_option('rootprefix')
 # Unusual rootprefixdir values are used by some distros
 # (see https://github.com/systemd/systemd/pull/7461).
@@ -91,7 +97,7 @@ datadir = join_paths(prefixdir, get_option('datadir'))
 localstatedir = join_paths('/', get_option('localstatedir'))
 
 rootbindir = join_paths(rootprefixdir, 'bin')
-rootsbindir = join_paths(rootprefixdir, 'sbin')
+rootsbindir = join_paths(rootprefixdir, split_bin ? 'sbin' : 'bin')
 rootlibexecdir = join_paths(rootprefixdir, 'lib/systemd')
 
 rootlibdir = get_option('rootlibdir')
@@ -2743,6 +2749,7 @@ status = [
         '@0@ @1@'.format(meson.project_name(), meson.project_version()),
 
         'split /usr:                        @0@'.format(split_usr),
+        'split bin-sbin:                    @0@'.format(split_bin),
         'prefix directory:                  @0@'.format(prefixdir),
         'rootprefix directory:              @0@'.format(rootprefixdir),
         'sysconf directory:                 @0@'.format(sysconfdir),

diff --git a/meson_options.txt b/meson_options.txt
index 4dbbb5190acec99149ccf3905fde3b32ae94c123..2d27981849632af1c483bc968ddd8ad54a4e384c 100644 (file)
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -18,6 +18,8 @@
 
 option('split-usr', type : 'combo', choices : ['auto', 'true', 'false'],
        description : '''/bin, /sbin aren't symlinks into /usr''')
+option('split-bin', type : 'combo', choices : ['auto', 'true', 'false'],
+       description : '''sbin is not a symlink to bin''')
 option('rootlibdir', type : 'string',
        description : '''[/usr]/lib/x86_64-linux-gnu or such''')
 option('rootprefix', type : 'string',