[Buildroot] [PATCH] Makefile: fix out-of-tree builds with multiple targets with 'all'

[Yann E. MORIN]

From: "Yann E. MORIN" <yann.morin.1998 at free.fr>

For out-of-tree builds, this use-case fails to build:
    $ make clean all

This is because 'all' is filtered-out in the Makefile wrapper, since
the wrapper itself has a 'all' target.

The 'all' target is just the usual naming for the default target in a
Makefile. In fact, the first target is the default one, so we can name
it whatever we want.

Rename the Makefile wrapper 'all' target to avoid name-clashing.

Reported-by: Ryan Barnett <rjbarnet at rockwellcollins.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Cc: Ryan Barnett <rjbarnet at rockwellcollins.com>
---
 support/scripts/mkmakefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/support/scripts/mkmakefile b/support/scripts/mkmakefile
index cef2ec7..89dc649 100755
--- a/support/scripts/mkmakefile
+++ b/support/scripts/mkmakefile
@@ -32,14 +32,14 @@ MAKEFLAGS += --no-print-directory
 
 .PHONY: all \$(MAKECMDGOALS)
 
-all	:= \$(filter-out all Makefile,\$(MAKECMDGOALS))
+all	:= \$(filter-out Makefile,\$(MAKECMDGOALS))
 
-all:
+_all:
 	\$(MAKE) \$(MAKEARGS) \$(all)
 
 Makefile:;
 
-\$(all): all
+\$(all): _all
 	@:
 
 %/: all
-- 
1.8.1.2