[Buildroot] [PATCH next v6 01/10] Makefile: evaluate CCACHE and HOST{CC, CXX} at time of use

Thomas Petazzoni thomas.petazzoni at bootlin.com
Fri Nov 23 14:58:06 UTC 2018

As we are going to move to per-package SDK, the location of CCACHE and
therefore the definitions of HOSTCC and HOSTCXX need to be evaluated
at the time of use and not at the time of assignment. Indeed, the
value of HOST_DIR changes from one package to the other.

Therefore, we need to change from := to =.

In addition, while doing A := $(something) $(A) is possible, doing A =
$(something) $(A) is not legal. So, instead of defining HOSTCC in
terms of the current HOSTCC variable, we re-use HOSTCC_NOCCACHE

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
 Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 94adff3406..2819d44124 100644
--- a/Makefile
+++ b/Makefile
@@ -471,11 +471,11 @@ BR_PATH = "$(HOST_DIR)/bin:$(HOST_DIR)/sbin:$(PATH)"
 ifeq ($(BR2_CCACHE),y)
-CCACHE := $(HOST_DIR)/bin/ccache
+CCACHE = $(HOST_DIR)/bin/ccache
 BR_CACHE_DIR ?= $(call qstrip,$(BR2_CCACHE_DIR))
 export BR_CACHE_DIR
 export BR_NO_CCACHE

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