Add the help text for 'position independent executable' code build

Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/Config.in b/Config.in
index b49181732..3361e7381 100644
--- a/Config.in
+++ b/Config.in
@@ -466,7 +466,10 @@ config PIE
         default n
         depends on !STATIC
         help
-          (TODO: what is it and why/when is it useful?)
+          Hardened code option. PIE binaries are loaded at a different
+          address at each invocation. This has some overhead,
+          particularly on x86-32 which is short on registers.
+
           Most people will leave this set to 'N'.
 
 config NOMMU