[Buildroot] [PATCH 2/3] docs/manual: document FOO_PERMISSIONS_FILE

[Yann E. MORIN]

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
---
 docs/manual/adding-packages-generic.txt | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/docs/manual/adding-packages-generic.txt b/docs/manual/adding-packages-generic.txt
index 0e111e1..f23b405 100644
--- a/docs/manual/adding-packages-generic.txt
+++ b/docs/manual/adding-packages-generic.txt
@@ -385,7 +385,13 @@ information is (assuming the package name is +libfoo+) :
 * +LIBFOO_PERMISSIONS+ lists the changes of permissions to be done at
   the end of the build process. The syntax is once again the makedevs one.
   You can find some documentation for this syntax in the xref:makedev-syntax[].
-  This variable is optional.
+  This variable is optional; and its value must be known when the .mk
+  file is parsed.
+
+* +LIBFOO_PERMISSIONS_FILE+, like +LIBFOO_PERMISSIONS+ but points to a
+  file that contains the list of permissions. Unless +LIBFOO_PERMISSIONS+,
+  its content need not be known when the .mk file is parsed, so it can be
+  generated. This variable is optional, and you should seldom need it.
 
 * +LIBFOO_USERS+ lists the users to create for this package, if it installs
   a program you want to run as a specific user (e.g. as a daemon, or as a
-- 
2.7.4