[source] tools/qemu: use default host configure rule ; set appropriate vars & args

[LEDE Commits]

stintel pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/4fa8f2a7a1493ebb918a687c4ef587f43084bbf1

commit 4fa8f2a7a1493ebb918a687c4ef587f43084bbf1
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Mon Jan 9 14:46:18 2017 +0200

    tools/qemu: use default host configure rule ; set appropriate vars & args
    
    Admittedly, this is my own OCD wanting to get rid of this.
    
    Because I tried (a while back to upgrade QEMU to a newer version),
    and (during that attempt) I tried to get rid of this.
    
    Tested on Linux & Mac.
    
    Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 tools/qemu/Makefile | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/tools/qemu/Makefile b/tools/qemu/Makefile
index 2d954e4..783d0f9 100644
--- a/tools/qemu/Makefile
+++ b/tools/qemu/Makefile
@@ -18,15 +18,13 @@ include $(INCLUDE_DIR)/host-build.mk
 
 HOST_CFLAGS += -I$(STAGING_DIR_HOST)/include/e2fsprogs
 
-define Host/Configure
-	(cd $(HOST_BUILD_DIR); \
-		CFLAGS="$(HOST_CFLAGS)" \
-		LDFLAGS="$(HOST_LDFLAGS)" \
-		$(HOST_CONFIGURE_CMD) \
-		--extra-cflags="$(HOST_CFLAGS)" \
-		--enable-uuid \
-	)
-endef
+HOST_CONFIGURE_VARS := \
+	CFLAGS="$(HOST_CFLAGS)" \
+	LDFLAGS="$(HOST_LDFLAGS)"
+
+HOST_CONFIGURE_ARGS := \
+	--extra-cflags="$(HOST_CFLAGS)" \
+	--enable-uuid
 
 define Host/Compile
 	$(MAKE) -C $(HOST_BUILD_DIR) qemu-img