fixup __getauxval 2

build.sh

@@ -69,6 +69,9 @@ case ${TARGET} in
 	export HOST_CFLAGS="-Wno-error-implicit-function-declaration"
 	EXTRA_AFLAGS="-mmacosx-version-min=10.7.0"
 	;;
+aarch64-*-linux*)
+	EXTRA_CFLAGS="-mno-outline-atomics"
+	;;
 *)
 	OS=unknown
 esac
@@ -640,10 +643,6 @@ else
 			      -e "s/--netbsd/-rumprun-${RUMP_KERNEL}/" -e "s/-eabihf//")
 	COMPILER_FLAGS="-fno-stack-protector ${EXTRA_CFLAGS}"
 	COMPILER_FLAGS="$(echo ${COMPILER_FLAGS} | sed 's/--sysroot=[^ ]*//g')"
-	MACHINE=$(${CC:-gcc} -dumpmachine)
-	if [ ${MACHINE} = "aarch64-linux-gnu" ] ; then
-	    appendvar COMPILER_FLAGS -mno-outline-atomics
-	fi
 	[ -f ${OUTDIR}/lib/crt0.o ] && appendvar STARTFILE "${OUTDIR}/lib/crt0.o"
 	[ -f ${OUTDIR}/lib/crt1.o ] && appendvar STARTFILE "${OUTDIR}/lib/crt1.o"
 	appendvar STARTFILE "${OUTDIR}/lib/crti.o"