Fix non-Linux builds

Various tools are Linuxish and should thus only attempted to build on
Linux only. Some features are also Linux-only.

Also, libresolv is used on all GNU platforms, notably GNU/Hurd and
GNU/kfreeBSD.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/util-linux/switch_root.c b/util-linux/switch_root.c
index 901c0b8db..f61002236 100644
--- a/util-linux/switch_root.c
+++ b/util-linux/switch_root.c
@@ -9,6 +9,7 @@
 //config:config SWITCH_ROOT
 //config:       bool "switch_root (5.5 kb)"
 //config:       default y
+//config:       select PLATFORM_LINUX
 //config:       help
 //config:       The switch_root utility is used from initramfs to select a new
 //config:       root device. Under initramfs, you have to use this instead of