mark Linux-specific configuration options

PLATFORM_LINUX is used as a dependency for applets or features
which require Linux-specific interfaces.

Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 3 insertions, 1 deletions

diff --git a/coreutils/Config.src b/coreutils/Config.src
index d4c9e0541..780b73fda 100644
--- a/coreutils/Config.src
+++ b/coreutils/Config.src
@@ -591,6 +591,7 @@ config FEATURE_SPLIT_FANCY
 config STAT
         bool "stat"
         default y
+        depends on PLATFORM_LINUX # statfs()
         help
           display file or filesystem status.
 
@@ -606,6 +607,7 @@ config FEATURE_STAT_FORMAT
 config STTY
         bool "stty"
         default y
+        depends on PLATFORM_LINUX
         help
           stty is used to change and print terminal line settings.
 
diff --git a/coreutils/date.c b/coreutils/date.c
index c737f09f3..cb41724af 100644
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -72,7 +72,7 @@
 //config:config FEATURE_DATE_NANO
 //config:       bool "Support %[num]N nanosecond format specifier"
 //config:       default n
-//config:       depends on DATE
+//config:       depends on DATE && PLATFORM_LINUX # syscall(__NR_clock_gettime)
 //config:       help
 //config:         Support %[num]N format specifier. Adds ~250 bytes of code.
 //config: