config, build: Fix broken dependencies

Commit 39f565a introduced a bug in which targets like configure-native
would be updated on every run, because they didn't generate stamps.
This bug was hidden until commit 5fb31a3.

This commit partially reverts and amends the aforementioned commits.

1 files changed, 12 insertions, 2 deletions

diff --git a/config b/config
index 42d441a..91c84ae 100755
--- a/config
+++ b/config
@@ -19,11 +19,21 @@ main()
 			for arch in ${PKG_TARGETS}; do
 				PKG_TARGET_ARCH="${arch}" configure_build
 			done
-			>targets.mk
-			printf 'targets =' >>targets.mk
+			printf 'targets =' >targets.mk
 			for arch in ${PKG_TARGETS}; do
 				printf ' \\\n\t%s' "${arch}" >>targets.mk
 			done
+			for step in configure build install; do
+				for type in native cross; do
+					printf '\n%s_%s_stamps =' \
+						"${step}" "${type}" >>targets.mk
+					for arch in ${PKG_TARGETS}; do
+						printf ' \\\n\t%s-%s_%s' \
+							"${step}" "${type}" \
+							"${arch}" >>targets.mk
+					done
+				done
+			done
 			printf '\n' >>targets.mk
 			;;
 	esac