[Buildroot] [git commit] Makefile: use order-only dependency so symlinks are made only once

[Yann E. MORIN]

commit: https://git.buildroot.net/buildroot/commit/?id=7d38e58d4c6d62868b3973204c827b62bde4aa84
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

The rule to create the staging symlink has it depend on BASE_DIR, and
the symlink is created in BASE_DIR, which means that when the symlink
is created, BASE_DIR is updated, and thus made more recent than the
symlink itself.

As a consequence, every time one runs 'make', the symlink will be older
than BASE_DIR, and so will be re-created.

Ditto for the host symlink when the user has elected to have an
out-of-tree host dir.

Fix that by changing to using an order-only dependency.

Signed-off-by: Danomi Manchego <danomimanchego123 at gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 7bd8ada488..12812526c7 100644
--- a/Makefile
+++ b/Makefile
@@ -457,12 +457,12 @@ endif
 
 ifneq ($(HOST_DIR),$(BASE_DIR)/host)
 HOST_DIR_SYMLINK = $(BASE_DIR)/host
-$(HOST_DIR_SYMLINK): $(BASE_DIR)
+$(HOST_DIR_SYMLINK): | $(BASE_DIR)
 	ln -snf $(HOST_DIR) $(HOST_DIR_SYMLINK)
 endif
 
 STAGING_DIR_SYMLINK = $(BASE_DIR)/staging
-$(STAGING_DIR_SYMLINK): $(BASE_DIR)
+$(STAGING_DIR_SYMLINK): | $(BASE_DIR)
 	ln -snf $(STAGING_DIR) $(STAGING_DIR_SYMLINK)
 
 # Quotes are needed for spaces and all in the original PATH content.