check nobody user/group validity only when not cross compiling

Using `getent' and `id' command in case of cross compiling does not
make much sense. This is because it is the host files that are checked.

Besides, in some restricted cross compilation environment, these two
command may not even be available. This is to avoid host comtamination.

So we should only check the validity using getent and id when not
cross compiling.

(cherry picked from commit 2484bff32bc5af4af811381393df1090d6e4586f)

1 files changed, 33 insertions, 31 deletions

diff --git a/meson.build b/meson.build
index ed32e5bd9..cbe536538 100644
--- a/meson.build
+++ b/meson.build
@@ -827,41 +827,43 @@ message('maximum system GID is @0@'.format(system_gid_max))
 nobody_user = get_option('nobody-user')
 nobody_group = get_option('nobody-group')
 
-getent_result = run_command('getent', 'passwd', '65534')
-if getent_result.returncode() == 0
-        name = getent_result.stdout().split(':')[0]
-        if name != nobody_user
-                warning('\n' +
-                        'The local user with the UID 65534 does not match the configured user name "@0@" of the nobody user (its name is @1@).\n'.format(nobody_user, name) +
-                        'Your build will result in an user table setup that is incompatible with the local system.')
+if not meson.is_cross_build()
+        getent_result = run_command('getent', 'passwd', '65534')
+        if getent_result.returncode() == 0
+                name = getent_result.stdout().split(':')[0]
+                if name != nobody_user
+                        warning('\n' +
+                                'The local user with the UID 65534 does not match the configured user name "@0@" of the nobody user (its name is @1@).\n'.format(nobody_user, name) +
+                                'Your build will result in an user table setup that is incompatible with the local system.')
+                endif
         endif
-endif
-id_result = run_command('id', '-u', nobody_user)
-if id_result.returncode() == 0
-        id = id_result.stdout().to_int()
-        if id != 65534
-                warning('\n' +
-                        'The local user with the configured user name "@0@" of the nobody user does not have UID 65534 (it has @1@).\n'.format(nobody_user, id) +
-                        'Your build will result in an user table setup that is incompatible with the local system.')
+        id_result = run_command('id', '-u', nobody_user)
+        if id_result.returncode() == 0
+                id = id_result.stdout().to_int()
+                if id != 65534
+                        warning('\n' +
+                                'The local user with the configured user name "@0@" of the nobody user does not have UID 65534 (it has @1@).\n'.format(nobody_user, id) +
+                                'Your build will result in an user table setup that is incompatible with the local system.')
+                endif
         endif
-endif
 
-getent_result = run_command('getent', 'group', '65534')
-if getent_result.returncode() == 0
-        name = getent_result.stdout().split(':')[0]
-        if name != nobody_group
-                warning('\n' +
-                        'The local group with the GID 65534 does not match the configured group name "@0@" of the nobody group (its name is @1@).\n'.format(nobody_group, name) +
-                        'Your build will result in an group table setup that is incompatible with the local system.')
+        getent_result = run_command('getent', 'group', '65534')
+        if getent_result.returncode() == 0
+                name = getent_result.stdout().split(':')[0]
+                if name != nobody_group
+                        warning('\n' +
+                                'The local group with the GID 65534 does not match the configured group name "@0@" of the nobody group (its name is @1@).\n'.format(nobody_group, name) +
+                                'Your build will result in an group table setup that is incompatible with the local system.')
+                endif
         endif
-endif
-id_result = run_command('id', '-g', nobody_group)
-if id_result.returncode() == 0
-        id = id_result.stdout().to_int()
-        if id != 65534
-                warning('\n' +
-                        'The local group with the configured group name "@0@" of the nobody group does not have UID 65534 (it has @1@).\n'.format(nobody_group, id) +
-                        'Your build will result in an group table setup that is incompatible with the local system.')
+        id_result = run_command('id', '-g', nobody_group)
+        if id_result.returncode() == 0
+                id = id_result.stdout().to_int()
+                if id != 65534
+                        warning('\n' +
+                                'The local group with the configured group name "@0@" of the nobody group does not have UID 65534 (it has @1@).\n'.format(nobody_group, id) +
+                                'Your build will result in an group table setup that is incompatible with the local system.')
+                endif
         endif
 endif
 if nobody_user != nobody_group and not (nobody_user == 'nobody' and nobody_group == 'nogroup')