toybox: reworked build.

base/toybox/toybox.conf

@@ -23,7 +23,7 @@ var_remove_regex SYSGCC_WRAPPER_INSERT " " "-O.*"
 
 hook_add premake 1 'toybox_config'
 toybox_config() {
-	eval $MAKE defconfig CPUS=$CPUS
+	eval $MAKE defconfig
 	if pkginstalled time; then
 		sed -i -e "s,^CONFIG_TIME=y,CONFIG_TIME=n," .config
 	fi
@@ -36,8 +36,15 @@ toybox_config() {
 	# always disable what e2fsprogs includes
 		sed -i -e "s,^CONFIG_CHATTR=y,CONFIG_CHATTR=n," .config
 		sed -i -e "s,^CONFIG_LSATTR=y,CONFIG_LSATTR=n," .config
-	eval $MAKE oldconfig CPUS=$CPUS
+	eval $MAKE -j1 oldconfig
 }
 
-var_append makeopt ' ' 'CPUS=$CPUS toybox'
+hook_add premake 5 'toybox_build'
+toybox_build() {
+	export CC STRIP
+	export HOSTCC=$BUILD_CC
+	unset CROSS_COMPILE
+	eval $MAKE toybox V=1
+}
+makeopt=
 var_append makeinstopt ' ' "CPUS=$CPUS PREFIX=$root/"