[Buildroot] [git commit branch/2018.02.x] package/pkg-generic.mk: fix show-build-order stdout pollution

Peter Korsgaard peter at korsgaard.com
Mon Nov 26 16:19:02 UTC 2018

commit: https://git.buildroot.net/buildroot/commit/?id=a039dd082dd40aecfbfd3562727508748ceab68d
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2018.02.x

The commands like "make show-build-order" or "make
<package>-show-build-order" show the build order and then print
"make[1]: Nothing to be done for 'show-build-order'" to stdout. It
pollutes output. Technically this message is true but it's not true
for user because he gets an information.

The <package>-show-build-order targets use $(info) for package name
printing.  The make utility doesn't consider the internal directive as
a command so it think that it's "Nothing to be done". The patch adds
the empty command to <package>-show-build-order to inform make utility
that taget makes some real actions.

Signed-off-by: Serj Kalichev <serj.kalichev at gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
[Thomas: invert $(info) and @:, as suggested by Yann.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>

(cherry picked from commit 75c81a12f68f943af2966e737f882b3f4fc7a909)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
 package/pkg-generic.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/pkg-generic.mk b/package/pkg-generic.mk
index a689dde4d2..d25f0f9afe 100644
--- a/package/pkg-generic.mk
+++ b/package/pkg-generic.mk
@@ -736,6 +736,7 @@ $(1)-show-rdepends:
 			@echo $$($(2)_RDEPENDENCIES)
 $(1)-show-build-order: $$(patsubst %,%-show-build-order,$$($(2)_FINAL_ALL_DEPENDENCIES))
+	@:
 	$$(info $(1))
 $(1)-graph-depends: graph-depends-requirements

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