build system: drop PLATFORM_LINUX

PLATFORM_LINUX is a hidden configuration option which is disabled by
default and enabled at over a hundred locations for features that are
deemed to be Linux specific.

The only effect of PLATFORM_LINUX is to control compilation of
libbb/match_fstype.c.  This file is only needed by mount and umount.

Remove all references to PLATFORM_LINUX and compile match_fstype.c
if mount or umount is enabled.

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/miscutils/watchdog.c b/miscutils/watchdog.c
index 86600b72f..8c8d7217f 100644
--- a/miscutils/watchdog.c
+++ b/miscutils/watchdog.c
@@ -11,7 +11,6 @@
 //config:config WATCHDOG
 //config:       bool "watchdog (5.3 kb)"
 //config:       default y
-//config:       select PLATFORM_LINUX
 //config:       help
 //config:       The watchdog utility is used with hardware or software watchdog
 //config:       device drivers. It opens the specified watchdog device special file