Disable USE=sanitize on bare metal targets

USE=sanitize needs explicit support from OS to implement sanitizers.
Currently those are implemented for Linux and *BSDs.

Noticed by |Jeroen| on #gentoo-arm when building:
    crossdev -t arm-none-eabi

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/crossdev b/crossdev
index 9d614a2..1cd59fb 100755
--- a/crossdev
+++ b/crossdev
@@ -323,6 +323,8 @@ parse_target() {
 			KPKG="[none]"
 			STAGE_DEFAULT=${STAGE_LIBC}
 			GUSE+=" cxx -openmp" #489798
+			# asan needs OS support to implement sanitizers
+			GUSE+=" -sanitize"
 			MULTILIB_USE="yes" #407275
 			WITH_DEF_HEADERS="no"
 			;;